CITY OF BOULDER CITY, NEVADA
DEPARTMENT OF PUBLIC WORKS ENGINEERING DIVISION
BOULDER CITY TAP TRANSFORMER AND BREAKER REPLACEMENTS (69kV TRANSFORMER PURCHASE)
BOULDER CITY PROJECT NO. 15‐0931‐ED(1) BID DATE: THURSDAY, FEBRUARY 2, 2017 – 2:30PM
FORMAL BID #FB‐0694‐17
FUNDED BY: The City of Boulder City
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TABLE OF CONTENTS
Description Page TABLE OF CONTENTS...... 2 NOTICE INVITING BIDS ...... 3 INSTRUCTIONS TO BIDDERS ...... 5 OFFICIAL PROPOSAL ...... 7 BID SCHEDULE I ...... 9 INFORMATION REQUIRED OF BIDDER ...... 10 LIST OF SUBCONTRACTORS ...... 11 EQUIPMENT/MATERIAL SOURCE INFORMATION ...... 12 AGREEMENT ...... 14 CERTIFICATE OF OWNER’S ATTORNEY ...... 16 AGREEMENT FOR BINDING ARBITRATION ...... 17 DEFINITIONS AND ABBREVIATIONS ...... 21 GENERAL CONDITIONS ...... 22 TECHNICAL SPECIFICATION ...... 25
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NOTICE INVITING BIDS
RECEIPT OF PROPOSALS: Sealed proposals will be received at the office of the Finance Department, City of Boulder City, Nevada, Owner of the work located at City Hall, 401 California Avenue, Boulder City, Nevada 89005, until 2:30 PM, Thursday, February 2, 2017, for the BOULDER CITY TAP TRANSFORMER AND BREAKER REPLACEMENTS (69kV TRANSFORMER PURCHASE), PROJECT NO. 15‐0931‐ED(1).
DESCRIPTION OF WORK: This specification covers the furnishing of one new autotransformer, rated at 230‐69‐12kV, 60/80/100(112) MVA, 55°C/65°C, ONAN/ONAF/ONAF, 60 Hertz, three‐ phase (breakers are not a part of this bid). The autotransformer shall be connected to a system that has an effectively grounded neutral and is to be operated at an elevation of 3,000 feet, in ambient temperatures ranging from (‐7) °C to (49) °C. The new autotransformer shall meet all requirements of the Technical Specifications.
Vendor shall supply accessory devices, instruction books, equipment, field service, and spare parts as specified in the Technical Specifications.
EXCEPTIONS: Any exceptions to this specification shall be clearly set forth in the vendor’s initial bid and specifically identified as exceptions. Comments must be clearly separated from exceptions. It is the owner’s intent to purchase a unit bid with no exceptions taken to this specification. All such bids shall clearly indicate “no exceptions taken”.
COMPLETION OF WORK: All work must be completed by the Guaranteed Delivery Date provided by the successful bidder, but no later than February 28, 2018.
OPENING OF PROPOSALS: The proposals will be publicly opened and read at 2:30 PM Thursday, February 2, 2017, at City Hall.
OBTAINING CONTRACT DOCUMENTS: The plans, specifications, and all contract documents may be obtained on the City’s website at http://www.bcnv.org/bids.aspx. Bidders who download the contract documents are responsible to check the webpage for updates and addenda.
QUALIFICATION OF BIDDER: Bidder must obtain a State of Nevada business license and Boulder City business license. Both licenses must be obtained within 60 days of execution of the contract.
PROJECT ADMINISTRATION: All questions relative to this project prior to the opening of bids shall be directed to the Project Representative for the project in writing or via e‐mail.
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INSTRUCTIONS TO BIDDERS
FORM OF PROPOSAL: The proposal shall be made on the bidding schedule(s) herein and the proposal shall be submitted in the complete volume. The complete volume, including the completed Technical Specifications and any other information required in the Technical Specifications, shall be enclosed in a sealed envelope bearing the name of the bidder and name of project. In the event there is more than one bidding schedule, the bidder may bid on any individual schedule or on any combination of schedules.
DELIVERY OF PROPOSAL: The proposal shall be delivered by the time and to the place stipulated in the Notice Inviting Bids. It is the bidder's sole responsibility to see that his proposal is received in proper time. Any proposal received after the scheduled closing time for receipt of proposals will be returned to the bidder unopened.
WITHDRAWAL OF PROPOSAL: The proposal may be withdrawn by the bidder by means of a written request, signed by the bidder or his properly authorized representative. Such written request must be delivered to the place stipulated in the Notice Inviting Bids for receipt of proposals prior to the scheduled closing time for receipt of proposals.
MODIFICATIONS AND ALTERNATIVE PROPOSALS: Unauthorized conditions, limitations, or provisions attached to a proposal will render it informal and may cause its rejection. The completed proposal forms shall be without interlineations, alterations, or erasures. Alternative proposals will not be considered unless called for. Oral, telegraphic, or telephonic proposals or modifications will not be considered.
DISCREPANCIES IN PROPOSALS: In the event there is more than one bid item in a bidding schedule, the bidder shall furnish a price for all bid items in the schedule, and failure to do so will render the proposal informal and may cause its rejection. In the event there are unit price bid items in a bidding schedule and the "amount" indicated for a unit price bid item does not equal the product of the unit price and quantity, the unit price shall govern and the amount will be corrected accordingly. In the event there is more than one bid item in a bidding schedule and the total indicated for the schedule does not agree with the sum of the prices bid on the individual items, the prices bid on the individual items shall govern and the total for the schedule will be corrected accordingly.
BIDDER'S EXAMINATION OF SITE: Before submitting a proposal, the bidder shall carefully examine the specifications, and other contract documents. It will be assumed that the bidder has a clear understanding of the requirements of the contract regarding the furnishing of materials and performance of work.
COMPETENCY OF BIDDERS: In selecting the lowest responsible bidder, consideration will be given not only to the financial standing, but also to the general competency of the bidder for
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the performance of the work covered by the proposal. To this end, each proposal shall be supported by a statement of the bidder's experience as of recent date on the form entitled "INFORMATION REQUIRED OF BIDDER", bound herein.
DISQUALIFICATION OF BIDDERS: More than one proposal from an individual, firm, partnership, corporation, or association under the same or different names will not be considered. Reasonable grounds for believing that any bidder is interested in more than one proposal for the work contemplated will cause the rejection of all proposals in which such bidder is interested. If there is reason for believing that collusion exists among the bidders, all bids will be rejected and none of the participants in such collusion will be considered in future proposals.
AWARD OF CONTRACT: Award of a contract, if it be awarded, will be based primarily on the lowest overall cost to the Owner, and will be made to a responsible bidder whose proposal complies with all the requirements prescribed. Any such award will be made within 45 calendar days after opening of the proposals, unless a longer waiting period before award is expressly allowed in the Notice Inviting Bids. Unless otherwise indicated, a single award will not be made for less than all the bid items in an individual bidding schedule. In the event there is more than one bidding schedule, the Owner may award schedules individually or in combination.
EXECUTION OF CONTRACT: The bidder to whom award is made shall execute a written contract with the Owner on the form of agreement provided within 10 calendar days after receipt of the contract from the Owner. Failure or refusal to enter into a contract as herein provided or to conform to any of the stipulated requirements in connection therewith shall be just cause for annulment of the award. If the successful bidder refuses or fails to execute the contract, the Owner may award the contract to the second lowest responsible bidder. If the second lowest responsible bidder refuses or fails to execute the contract, the Owner may award the contract to the third lowest responsible bidder.
The bidder shall comply with the Copeland "Anti‐Kick Back" Act (18 U.S.C. 874) as supplemented in the Department of Labor Regulations (29 CFR Part 3). This act provides that each contractor or subcontractor shall be prohibited from inducing, by any means, any persons employed in the construction, completion or repair of public work, to give up any part of the compensation to which he is otherwise entitled.
The City of Boulder City, in accordance with Title VI of the Civil Rights Act of 1964, 78 Stat. 252, 42 U.S.C. 2000d at 2000d‐4 and Title 49, Code of Federal Regulations, Department of Transportation, Subtitle A, Office of the Secretary, Part 21, Non‐Discrimination in Federally Assisted Programs of the Department of Transportation issued pursuant to this advertisement, minority business enterprises, will be afforded full opportunity to submit bids in response to this invitation and will not be discriminated against on the grounds of race, color or national origin in consideration for any award.
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OFFICIAL PROPOSAL
BOULDER CITY TAP TRANSFORMER AND BREAKER REPLACEMENTS (69kV TRANSFORMER PURCHASE) BOULDER CITY PROJECT NO. 15‐0931‐ED(1) THURSDAY, FEBRUARY 2, 2017 – 2:30 PM
TOTAL BID AMOUNT IN WORDS *
THIS AMOUNT MUST MATCH THE “TOTAL BID AMOUNT” AT THE END OF BID SCHEDULE I.
______DOLLARS &
______CENTS NOTE: The lowest responsible proposal for each schedule or combination thereof shall be determined in part by the unit prices contained therein. The unit prices must be written legibly or typed. If the unit prices cannot be read, it may result in the bid being deemed non‐ responsive at the discretion of the City. In the case of a mathematical error in the bid schedule, the sum of the individual unit prices shall prevail, however at the discretion of the City a mathematical error may result in the bid being deemed non‐responsive.
The undersigned bidder hereby proposes to furnish all labor, materials, equipment, tools and services necessary to perform all work required under the bidding schedule(s) of the owner's specifications entitled BOULDER CITY TAP TRANSFORMER AND BREAKER REPLACEMENTS (69kV TRANSFORMER PURCHASE), PROJECT NO. 15‐0931‐ED(1) in accordance with the intent of said specifications, drawings and all addenda issued by said Owner prior to opening of proposals.
Said bidder agrees that, within ten (10) calendar days after receipt of the contract from said Owner, he will execute said contract in the required form, of which the Notice Inviting Bids, Instructions to Bidders, Proposal, Information Required of Bidder, Specifications, Drawings, Proposals, are a part; and that upon failure to do so within said time will result in a breach of contract.
The bidder does acknowledge receipt of any Addendum by attaching it to the contact documents and by signing this proposal sheet.
Said bidder further agrees to complete all work required under the contract within the time stipulated in said specifications, and to accept the full payment therefore, the price(s) named in the bidding schedule(s).
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NOTE: There is no bid bond required for this project.
Bidder: ______
Address: ______
City, State, Zip: ______
Telephone Number: ______
Email Address: ______
Printed Name of Bidder Representative: ______
Title of Representative: ______
Bidder Representative Authorized Signature: ______
Date: ______
NOTE: Submitted bid prices shall remain firm for forty‐five (45) calendar days.
NOTE: Boulder City is exempt from payment of Federal Excise Tax and Nevada State Sales Tax. Proper exemption forms will be furnished to the successful bidder.
AREA LEFT BLANK INTENTIONALLY
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BID SCHEDULE I
BOULDER CITY TAP TRANSFORMER AND BREAKER REPLACEMENTS (69kV TRANSFORMER PURCHASE) Boulder City Project No. 15‐0931‐ED(1) Thursday, February 2, 2017 – 2:30 PM
PROPOSAL ITEM DESCRIPTION QTY UNIT UNIT PRICE IN WORDS AMOUNT NO. (Unit Price x Qty) 1 Autotransformer, 230‐69‐ 12kV, 60/80/100 (112) MVA, 55°C/65°C, 1 EA ______$______ONAN/ONAF/ONAF, 60 Hz, 3‐Phase 2 Personnel to oversee assembly and testing of 1 LS ______$______transformer at BC Tap
3 Freight costs including rail and/or truck 1 LS ______$______transportation and loading /unloading 4 Transformer oil, delivered 1 LS ______$______to job site. 5 Accessory devices/tools, instruction books, 1 LS ______$______equipment and spare parts.
TOTAL BASE BID $______
6 (Optional) Weekly offsite 1 Week ______$______storage fee 7 (Optional) Extend 1 LS ______$______Warranty to 5 years Guaranteed Delivery Date (No Later Than February 28, 2018) Date ______
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INFORMATION REQUIRED OF BIDDER GENERAL INFORMATION
The bidder shall furnish the following information. Additional sheets shall be attached as required.
(1) Firm's name and address:
(2) Firm's telephone number:
(3) Number of years as a manufacturer of this type of equipment: (4) Names and titles of all officers of the firm:
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LIST OF SUBCONTRACTORS
The bidder shall list below the name and business address of each subcontractor who will perform work under this contract in excess of five percent of the total bid price and shall also list the portion of the work which will be done by such subcontractor. After the opening of proposals, no changes or substitutions will be allowed without the written approval of the Owner.
The bidder shall also list subcontractors who will perform work under this contract in excess of one percent (minimum of $50,000) of the total bid price.
Work to be Performed Subcontractor's Name & Address 1.
2.
3.
4.
5.
6.
7.
8.
9.
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EQUIPMENT/MATERIAL SOURCE INFORMATION FOR MANUFACTURER AND SUBCONTRACTORS
The bidder shall indicate opposite each item of equipment or material listed below, the name of the manufacturer or supplier of the equipment or material proposed to be furnished under the bid. Failure to comply with this requirement will render the proposal informal and may cause its rejection. Awarding of a contract under this bid will not imply approval by the Owner of the manufacturers or suppliers listed by the bidder. After the opening of proposals, no changes or substitutions will be allowed without written approval of the Owner.
Equipment/Material Manufacturer/Supplier
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NOTE: THE FOLLOWING INFORMATION SHALL NOT BE PROVIDED WITH THIS BID PROPOSAL BUT MAY BE REQUESTED PRIOR TO AWARD:
1) Individual experience resume of person who will be designated as the main contact with the Owner.
2) A notarized and verified financial statement, references, and other information, sufficiently comprehensive to permit an appraisal of the firm’s financial condition.
3) Information on the bidder's ability to staff the project and the bidder's ability to directly supply major equipment to the project.
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AGREEMENT
THIS AGREEMENT, made and entered into this _____ day of 2017, by and between City of Boulder City, Nevada, hereinafter called "Owner," and , hereinafter called "Manufacturer".
WITNESSETH, that the parties hereto do mutually agree as follows:
ARTICLE I: For and in consideration of the payments and agreements hereinafter mentioned to be made and performed by said Owner, said Manufacturer agrees with said Owner to perform and complete in a workmanlike manner all work required under the bidding schedule(s) of said Owner's specifications entitled, BOULDER CITY TAP TRANSFORMER AND BREAKER REPLACEMENTS (69kV TRANSFORMER PURCHASE), PROJECT NO. 15‐0931‐ED(1), in accordance with the specifications therefore, to furnish at his own expense all labor, materials, equipment, tools, and services necessary therefore, except such materials, equipment, and services as may be stipulated in said specifications to be furnished by said Owner, and to do everything required by this agreement and said specifications.
ARTICLE II: Manufacturer agrees with said Owner to furnish all said labor, materials, equipment, tools, and services and do everything required by this agreement and the said specifications; also for all loss and damage arising out of the nature of the work aforesaid, or from the action of the elements, or from any unforeseen difficulties which may arise during the prosecution of the work until its acceptance by said Owner, and for all risks of every description connected with the work; also for all expenses resulting from the suspension or discontinuance of work, except as in the said specifications are expressly stipulated to be borne by said Owner; and for completing the work in accordance with the requirements of said specifications, said Owner will pay and said Manufacturer shall receive, in full compensation therefore, the price(s) named in the above‐mentioned bidding schedule(s).
ARTICLE III: The Owner hereby employs said Manufacturer to perform the work according to the terms of this agreement for the above‐mentioned price(s), and agrees to pay the same at the time, in the manner, and upon the conditions stipulated in the said specifications; and the said parties for themselves, their heirs, executors, administrators, successors, and assigns, do hereby agree to the full performance of the covenants herein contained.
ARTICLE IV: The Notice Inviting Bids, instructions to bidders, proposal, information required of bidder, specifications, and all addenda issued by the Owner with respect to the foregoing prior to the opening of bids, are hereby incorporated in and made part of this Agreement.
ARTICLE V: This Agreement shall be construed under the Laws of the State of Nevada and the site of contract shall be Boulder City, Clark County, Nevada.
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IN WITNESS WHEREOF, the parties hereto have caused this contract to be executed the day and year first above written.
BY: (Contractor) J. David Fraser, City Manager
By: ATTEST:
By: Secretary Lorene Krumm, City Clerk
(SEAL)
APPROVED AS TO FORM:
Dave Olsen, City Attorney
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CERTIFICATE OF OWNER’S ATTORNEY
I, the undersigned, Dave Olsen, the duly authorized and acting legal representative of the City of Boulder City, Nevada, do hereby certify as follows:
I have examined the attached contract(s) and the manner of execution thereof, and I am of the opinion that the aforesaid agreement has been duly executed by the duly authorized representatives of the City of Boulder City; that said representatives have full power and authority to execute said agreement on behalf of the City of Boulder City; and that the foregoing agreement constitute valid and legally binding obligations upon the City of Boulder City executing the same in accordance with terms, conditions and provisions thereof.
Dave Olsen, City Attorney
Date
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AGREEMENT FOR BINDING ARBITRATION
This Agreement for Binding Arbitration (the "Agreement") is executed this ____ day of ______, 2017 between the City of Boulder City (“Owner”) and ______(“Manufacturer”).
In the interest of resolving the disputes between the Parties expeditiously, economically, and efficiently, the Owner and Manufacturer stipulate to submitting all disputes between them arising out of the Contract, as defined below, to final and binding arbitration in accordance with the terms of this Agreement.
I. PRELIMINARY STATEMENT AND DEFINITIONS
The following preliminary statement and definitions apply throughout this Agreement:
A. The term "Contract" shall mean that agreement between Manufacturer and Owner dated as of ______in the original amount of ______for the BOULDER CITY TAP TRANSFORMER AND BREAKER REPLACEMENTS (69kV TRANSFORMER PURCHASE), PROJECT NO. 15‐0931‐ED(1) located in Boulder City, Nevada.
B. The term "Parties" shall refer collectively to mean the Owner and Manufacturer, and the term "Party" shall refer individually to the Owner or Manufacturer.
C. This Agreement constitutes the sole agreement of the Parties with respect to the arbitration and resolution of all claims arising out of or related to the Contract, and sets forth the rights, duties, and obligations of the Parties in relation thereto. Any prior agreements, promises, negotiations, or representations concerning the Agreement's subject matter not expressly set forth in this Agreement are of no force and effect.
II. DISCOVERY
The Parties agree that no formal discovery will take place prior to the arbitration.
III. RULES GOVERNING ARBITRATION
A. Interpretation, Non‐Compliance, and Modification 1. Interpretation of the provisions of this Agreement, insofar as they relate to the Arbitrator’s power and duties, shall be left to the discretion of the Arbitrator. 2. Any Party who proceeds with the arbitration after knowledge that any provision or requirement of this Agreement has not been complied with and who fails to object thereto in writing, shall be deemed to have waived the right to object.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 17 of 68 3. The Parties may modify or abrogate any of the provisions of this Agreement without restriction, but only by a writing signed by both Parties. 4. This Agreement is not intended, nor shall it be construed, to address every issue that may arise during the arbitration process. The intent of this Agreement is to give considerable discretion to the Arbitrator. The arbitration hearing is intended to be informal, expeditious, and consistent with the purposes and intent of this Agreement. 5. This Agreement is intended to be in conformity with the requirements of Nevada law, which shall govern any disputes arising over the terms of this Agreement.
B. Selection of Arbitrator The Parties shall jointly select an Arbitrator. The Arbitrator shall govern all proceedings subject to the terms and conditions of this Agreement.
C. Compensation of the Arbitrator 1. The Arbitrator’s fees shall be paid equally by the Parties to the Arbitration. 2. The Arbitrator shall be reimbursed for reasonable costs associated with the arbitration, with the Parties sharing equally in those costs.
D. Communication with the Arbitrator 1. The Parties and their counsel are prohibited from communicating directly with the Arbitrator regarding the merits of the case, except in the presence of, or with the permission of, the other Party or the other Party's counsel. 2. The Parties shall provide each other with copies of any documents, including arbitration briefs, points and authorities, and exhibits, supplied to the Arbitrator in connection with this matter, as provided herein. 3. Unless otherwise agreed to in writing by the Parties, no settlement discussions made by any Party shall be disclosed to the Arbitrator prior to the rendering of the Arbitrator’s decision. 4. Should any disclosure occur in violation of this Agreement, the arbitrator shall recuse himself and a mutually agreed upon replacement arbitrator shall be appointed. The disclosing Party shall pay all costs for any arbitrator who recuses himself as a result of an unpermitted disclosure.
E. Location and Time of Arbitration Hearing The arbitration shall be conducted in Clark County, Nevada, and shall be scheduled at a time that is convenient to the Arbitrator and the Parties. The arbitration hearing date may be advanced or continued by the Arbitrator for good cause upon written request from either Party, or upon mutual agreement of the Parties. The Arbitration shall be limited to four (4) hours, with equal time being given to each party to present their claims and defenses.
F. Pre‐Hearing Procedures No later than five days prior to the arbitration hearing, the Parties shall exchange briefs setting forth the following: (a) the facts of the case; (b) a list of all persons expected to testify at the arbitration hearing; (c) a list and copies of all documentary evidence; and (d) Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 18 of 68 the points and authorities which support their claims or defenses. These briefs shall be limited to ten pages in length, exclusive of exhibits, and copies shall be served on the Arbitrator. A Party failing to comply with this provision may not present at the arbitration hearing a witness or exhibit not previously identified pursuant to this provision, except with the permission of the Arbitrator upon a showing of unforeseen and unusual circumstances.
G. Arbitration Hearing Attendance 1. The Hearing shall only be attended by up to two (2) representatives for each Party. The Parties agree that the hearing shall not be recorded. 2. The arbitration hearing may proceed in the absence of any party who, after due notice, fails to be present or represented at the arbitration hearing, or fails to obtain a postponement of the arbitration hearing.
H. Conduct of Arbitration Hearing 1. The Arbitrator shall have complete discretion over the conduct of the Arbitration hearing. The arbitration hearing shall be conducted by the Arbitrator in whatever manner deemed appropriate by the Arbitrator to allow presentation of the evidence and arguments by the Parties. 2. The Arbitrator shall be the sole judge of the relevance and materiality of the offered evidence, and conformity to legal rules of evidence shall not be necessary. Documentary evidence may be used without the necessity of an authenticating witness. 3. At the close of the arbitration hearing, the Arbitrator shall specifically inquire of all Parties or their designated representatives as to whether they have any further evidence to offer or witnesses to be heard. Upon receiving negative replies, or if satisfied the record is complete, the Arbitrator shall declare the arbitration hearing closed. 4. The Arbitrator’s award shall be based solely on the briefs and arguments of the Parties and the evidence presented at the arbitration hearing.
IV. THE ARBITRATION AWARD
A. Time Limit for Arbitrator’s Decision The Arbitrator shall render his decision within five business days after the conclusion of the arbitration hearing.
B. Form and Content of Decision 1. The Arbitrator’s decision shall be in writing and shall be signed by the Arbitrator. 2. The Arbitrator shall determine all issues raised by the Parties. The Arbitrator’s Decision shall clearly identify the amount owed, if any, by one party to the other as final fulfillment of the Contract. 3. Both parties shall be served with a copy of the Arbitrator’s decision. 4. Within two (2) weeks of the Arbitrator’s Decision, final payment shall be made in accordance with the Arbitrator’s decision. In the event that payment is not made Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 19 of 68 pursuant to these terms and conditions of this agreement the Parties hereto may confirm the Arbitrator’s decision in any court of competent jurisdiction and execute on the decision as provided by law.
V. EFFECT OF AGREEMENT AND ARBITRATION AWARD
A. This Agreement and the Arbitrator’s decision shall be binding upon the Parties hereto and upon each of their heirs, executors, administrators, representatives, successors and assigns. The Parties understand and agree that the Arbitrator’s determination extends to and includes any and all claims, demands, liabilities, losses, injuries, and damages claimed by the Parties and any of their employees, representatives, affiliated corporations, predecessors, successors, and assigns, resulting from or as a consequence of the conduct, actions, or events that are alleged, or that could have been alleged, by the Parties and/or any of their employees, representatives, affiliated corporations, predecessors, successors, and assigns.
B. The Arbitrator’s decision is final and binding upon the Parties to this Agreement, and in consideration of this Agreement, the Parties unequivocally waive all rights to litigate the issues of this Lawsuit against each other, and further waive all rights to appeal the Arbitrator’s decision, except for circumstances tantamount to fraud or collusion in the decision of the Arbitrator.
City of Boulder City ______(CONTRACTOR)
______SIGNATURE SIGNATURE
TITLE:______TITLE:______
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 20 of 68 DEFINITIONS AND ABBREVIATIONS
Wherever the following abbreviations are used they shall have the meanings indicated:
AASHTO ...... American Association of the State ...... Highway and Transportation Officials ACI ...... American Concrete Institute AGA ...... American Gas Association AI ...... The Asphalt Institute AIA ...... American Institute of Architects AISC ...... American Institute of Steel Construction AISI ...... American Iron & Steel Institute ANSI ...... American National Standards Institute API ...... American Petroleum Institute ASA ...... American Standards Association, Inc. ASCE ...... American Society of Civil Engineers ASHRAE ...... American Society of Heating, Refrigerating, ...... and Air Conditioning Engineers ASME ...... American Society of Mechanical Engineers ASTM ...... American Society for Testing and Materials International AWS ...... American Welding Society AWWA ...... American Water Works Association CRSI ...... Concrete Reinforcement and Steel Institute FHWA ...... Federal Highway Administration IEEE ...... Institute of Electrical & Electronics Engineers IPCEA ...... Insulated Power Cable Engineers' Association ISO ...... Insurance Services Office NDOT ...... Nevada Department of Transportation NEMA ...... National Electrical Manufacturers Assoc. OSHA ...... Occupational Safety and Health Act of 1970 PCA ...... Portland Cement Association SNWA ...... Southern Nevada Water Authority SSPC ...... The Society for Protective Coatings UBC ...... Uniform Building Code, International Conference of Building Officials UDACS ...... Uniform Design and Construction Standards U/L ...... Underwriters' Laboratories, Inc.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 21 of 68 GENERAL CONDITIONS
GENERAL
AWARD OF CONTRACT AND NOTICE TO PROCEED
Award of the contract, if the contract is awarded, will be made by the Owner within 45 days after the opening of the proposals. After an award of the contract, two copies of the contract documents will be transmitted to the Manufacturer for execution. The contract documents shall be returned to the Owner within ten (10) calendar days after notification of award. Following execution of the contract a "Notice to Proceed" will be transmitted to the Manufacturer along with a fully executed copy of the contract which formally notifies the Manufacturer to begin work on the contract.
COMMENCEMENT AND COMPLETION OF WORK
The Manufacturer shall be required to commence work under this contract within fifteen (15) calendar days after the date of the "Notice to Proceed" unless otherwise agreed to and stated in the "Notice to Proceed." All work must be completed by the Guaranteed Delivery Date provided by the successful bidder on the Official Proposal Form.
CONTROVERSY OR CLAIM
Any controversy or claim arising out of or relating to this contract, which cannot be resolved by mutual agreement, shall be settled by binding arbitration in accordance with the City of Boulder City Agreement for Arbitration included in these contract documents.
LIQUIDATED DAMAGES FOR DELAY
The Manufacturer shall, as provided for in the General Conditions pay to the City as fixed and agreed liquidated damages, the amount of $650 for each calendar day delay in delivery of the equipment beyond the Guaranteed Delivery Date specified in the Proposal and the "Notice to Proceed" for the completion of the contract.
SHOP DRAWINGS
The Manufacturer shall submit Shop Drawings or descriptive literature for all materials used on the project. The Owner shall have the authority to reject any product upon completion of his review of the Manufacturer’s submittals in regard to proof of acceptability of the product.
QUALITY CONTROL
The Manufacturer is responsible for quality control testing for all materials used. Costs for quality control testing shall be considered incidental to the work. Copies of all quality control test results shall Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 22 of 68 be provided to the City.
MEASUREMENT AND PAYMENT
PARTIAL PAYMENT
Partial payments shall be made as follows:
1. 10% of Bid Item 1 once drawings and data per Section 1‐6 and 3‐1 of the Technical Specifications have been delivered to the City of Boulder City for review. 2. 10% of Bid Item 1 once drawings and data per Section 1‐6 and 3‐1 of the Technical Specifications have been approved by the City of Boulder City and release of the transformer for manufacturing. 3. 50% of Bid Item 1 once the transformer has been delivered to the site. 4. 25% of Bid Item 1 once the transformer has passed all testing in accordance with the Technical Specifications. 5. 5% of Bid Item 1 once the Notice of Completion has been issued. 6. 95% of Bid Items 2, 3 and 4 once items are delivered to the site, inspected and approved. 7. 5% of Bid Items 2, 3 and 4 once the Notice of Completion has been issued. 8. 95% of Bid Item 5 once the transformer has passed all testing in accordance with the Technical Specifications. 9. 5% of Bid Item 5 once the Notice of Completion has been issued. 10. If Bid Item 6 is used it will be paid for monthly. 11. If Bid Item 7 is used it will be paid 100% once the Notice of Completion is issued.
No payment will be made for equipment not delivered to the City of Boulder City.
ACCEPTANCE AND FINAL PAYMENT
Final payment shall only be made after all equipment has been delivered to the City of Boulder City, all required information for each piece of equipment is received by the Owner, all equipment has passed testing per the Technical Specifications and the Notice of Completion has been issued.
MISCELLANEOUS PROVISIONS
FREIGHT
For bid purposes, all freight is to include delivery to the City of Boulder City, Department of Public Works, at the site of the Boulder City Tap, Boulder City, NV 89005. The Boulder City Tap is located 1.5 miles northeast of the intersection of Utah Street and Canyon Point Road (near 2500 Utah Street the Boulder City Landfill) in Boulder City, Nevada (35°58’46.41”N 114°47’46.33”W). From Utah Street to the Boulder City Tap access to the site is via an unpaved, dirt road. The manufacturer is responsible for reviewing access to the site for conditions of delivery. The manufacturer is responsible for any grading of the unpaved, dirt roadway necessary to deliver to the Boulder City Tap site. Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 23 of 68
TRANSFORMER SPECIFICATIONS
See the attached Technical Specifications for the new autotransformer. Bidders shall complete all requested information in the Technical Specifications and submit the completed Technical Specifications and all required information with their bid.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 24 of 68 TECHNICAL SPECIFICATION
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 25 of 68 GENERAL
SCOPE:
This specification covers the furnishing of a new autotransformer, rated at 230‐69‐12kV, 60/80/100(112) MVA, 55ºC/65ºC, ONAN/ONAF/ONAF, 60 Hertz, three‐phase. The autotransformer shall be connected to a system that has an effectively grounded neutral and is to be operated at an elevation of less than 3,000 feet, in ambient temperatures ranging from (‐7) ºC to (49) ºC.
Vendor shall supply accessory devices, instruction books, equipment, field service, and spare parts as specified herein. The Vendor at Boulder City’s discretion shall also provide moving, unloading, assembly, and processing as specified herein.
EXCEPTIONS:
Any exceptions to this specification shall be clearly set forth in the vendor’s initial bid and specifically identified as exceptions. Comments must be clearly separated from exceptions. It is the owner’s intent to purchase a unit bid with no exceptions taken to this specification. All such bids shall clearly indicate “No Exceptions Taken”.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 26 of 68 AUTOTRANSFORMER SPECIFICATION TABLE OF CONTENTS
PART 1. TECHNICAL SPECIFICATION SECTION 1‐1 BID SCHEDULES, PROPOSAL FORM AND ENGINEERING DATA SECTION 1‐2 GUARANTEED LOSSES AND LOSS EVALUATION SECTION 1‐3 MAILING ADDRESS AND TECHNICAL CONTACT SECTION 1‐4 AUTOTRANSFORMER SPECIFICATION SECTION 1‐5 SEISMIC REQUIREMENTS FOR THE AUTOTRANSFORMER SECTION 1‐6 DRAWINGS AND DATA TO BE FURNISHED BY VENDOR
PART 2. PICKUP, SHIPMENT AND UNLOADING OF EQUIPMENT SECTION 2‐1 SHIPMENT OF EQUIPMENT AND MATERIALS SECTION 2‐2 RECEIPT AND UNLOADING OF EQUIPMENT AND MATERIALS SECTION 2‐3 STORAGE OF EQUIPMENT AND MATERIALS
PART 3. MISCELLANEOUS REQUIREMENTS SECTION 3‐1 HOLDBACK FOR DRAWINGS AND DATA SECTION 3‐2 ERECTION SERVICES SECTION 3‐3 SAFETY AND HEALTH SECTION 3‐4 SPARE PARTS SECTION 3‐5 MATERIAL SAFETY DATA SHEETS SECTION 3‐6 SHIPPING PROVISION (IMPACT RECORDER) SECTION 3‐7 FIELD SERVICES SECTION 3‐8 STATEMENT OF READINESS SECTION 3‐9 WARRANTY SECTION 3‐10 DRAWINGS
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 27 of 68 PART 1 – TECHNICAL SPECIFICATION
1‐1 BID SCHEDULE
SEE OFFICIAL PROPOSAL AND BID SCHEDULE 1
The City of Boulder City reserves the right to conduct a post award meeting with the equipment vendor after contract award date. The vendor shall have in attendance qualified personnel to discuss contractual and technical questions.
A. ENGINEERING DATA
1) Informational and final drawings and descriptive material are required with the bid. The proposal may include additional data, if desirable.
2) The following information shall be furnished with Vendor’s bid:
a. Outline drawings, cross section drawings, and descriptive literature required illustrating and describing the proposed equipment, its operation and installation.
b. Provide information listed in section 8.6.b of ANSI C57.12 standard.
3) INFORMATION TO BE FURNISHED WITH PROPOSAL
a. Installation Information:
Total weight of assembled autotransformer lbs.
Shipping weight lbs.
Oil weight lbs.
Largest shipping section (L x W x H) x x inches
Manufacturer Location
b. Design Data:
No load losses at 110% rated voltage Kilowatts
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 28 of 68 No load losses at 105% rated voltage Kilowatts
No load losses at 100% rated voltage Kilowatts
Load losses (including fan losses) At 100% load (60 MVA) Kilowatts
Load losses (including fan losses) At 187% load (112 MVA) Kilowatts
Total number of fans
Power requirements for all Control and auxiliary apparatus Kilowatts
Exciting current at rated frequency in % of rated current at 110% rated voltage %
Exciting current at rated frequency in % of rated current at 105% rated voltage % %
Exciting current at rated frequency in % of rated current at 100% rated voltage % %
a. Impedance % at base MVA % 230 ‐ 69kV
% 230 ‐ 12k
% 69 – 12kV
Zero Sequence Impedance % at base MVA %
Guaranteed maximum audio level, dB dB
Bushings Manufacturer and 230kV catalog number 69kV 12kV
Lightning arresters Manufacturer and catalog number 230kV
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 29 of 68 69kV 12kV
Manufacturer and type of the sudden pressure relays
Manufacturer and type of gas detector
Manufacturer, type, and accuracy class for bushing current transformers 230 kV 69kV 12kV
1‐2 GUARANTEED LOSSES AND LOSS EVALUATION
A. Each Bidder warrants that the performance of the autotransformer will meet the guaranteed losses stated below, with rated voltage and frequency applied to each winding. Bidders shall submit losses in kilowatts, rounded to the nearest tenth of a kilowatt.
1) Guaranteed no‐load losses at rated frequency and 100% voltage.______(KW)
2) Guaranteed load losses at 65°C and rated 60 MVA output.______(KW)
3) Guaranteed cooling losses at top 112 MVA output.______(KW)
B. Guaranteed losses will be evaluated per the cost of loss values listed below. For evaluation purposes, the cost of guaranteed losses will be added to the bid prices for comparison of offers.
C. The cost evaluated losses will be determined by multiplying the guaranteed losses by the following rates:
1) $ 3,000.00 per kW of no‐load losses
2) $ 1,200.00 per kW of load losses
3) $ 750.00 per kW of auxiliary losses
D. The bids will be evaluated using the following formula:
Transformer Cost = Purchase Price ($) + Lc x ($3,000/kW) + Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 30 of 68 Lw x ($1,200/kW)+La x ($750/kW)
Lc= Core loss (kW) – No load losses
Lw = Winding loss (kW) = Full load losses
La = Fan Load and Control System loss, etc. (kW) = Auxiliary Losses
1) Evaluated prices within 5% of the lowest will be considered equal.
2) The actual losses shall not exceed the quoted losses by more than the tolerances specified by the ANSI Standard C57.12.00.
3) A cost penalty will be assessed where it is found that the actual losses exceed the quoted losses by more than the tolerances allowed by the ANSI Standard.
a. The penalty will be the cost using the actual losses in the auototransformer cost formula less the cost using the quoted losses in the autotransformer cost formula.
4) No credit will be allowed if actual losses are less than quoted losses.
5) The supplier shall provide certified test reports for no load, full load and auxiliary losses for all units shipped.
E. Manufacturer’s guaranteed design impedance at 75°C (IEEE C57.12.00 tolerances apply.) % on a 60 MVA base.
1‐3 MAILING ADDRESS AND TECHNICAL CONTACT
The mailing address for drawings and technical contact information is as follows:
Jim Keane P.E. City Engineer 401 California Avenue Boulder City, NV 89005 [email protected]
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 31 of 68
1‐4 AUTOTRANSFORMER SPECIFICATION
SUB‐SECTIONS: TABLE OF CONTENTS
A. General
B. Ratings and Features
C. Manual Tap Changer
D. Automatic Load Tap Changer
E. Bushings
F. Windings
G. Core
H. Oil Preservation Equipment
I. Tank
J. Tank Base
K. Earthquake and Wind Design Loads
L. Cooling Equipment
M. Accessories
N. Control Cabinet and Terminal Boxes
O. Terminal Blocks
P. Control Wiring
Q. Insulating Oil
R. Factory Assembly and Tests
S. Painting
T. Surge Arresters
U. Terminal Connectors
V. Bushing Current Transformers
W. List of Drawings Provided By CBC Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 32 of 68
A. GENERAL
The Vendor shall furnish the autotransformer complete with tank‐mounted surge arresters, insulating oil, features, and accessories as specified, and provide everything as necessary for operation of the equipment.
Unless otherwise specified herein, the autotransformer shall be designed and manufactured in accordance with American National Standards Institute (ANSI), Institute of Electrical and Electronics Engineers, Inc. (IEEE), National Electrical Manufacturers Association (NEMA), American Society for Testing and Material (ASTM), and specifically ANSI/IEEE C57.12.00, latest editions. Only equipment of current manufacture shall be furnished. The autotransformer, including bushings and all accessories, shall be capable of operating at all loadings 100 MVA and below, and temperature rise limitations as provided in the Guide for Loading Oil‐Immersed Power Transformer with 55ºC Average Winding Rise, ANSI/IEEE C57.92, latest edition. The autotransformer, including bushings and all accessories, shall be capable of operating at all loadings between 100 MVA and 112 MVA, and temperature rise limitations as provided in the Guide for Loading Oil‐Immersed Power Transformer with 65 ºC Average Winding Rise. The autotransformer minimum clearance from live parts shall be in accordance with Table 124‐1 of ANSI/IEEE C2‐2012. All DC control voltages shall be 48 VDC.
1) APPLICABLE CODES AND STANDARDS:
a. Already manufactured autotransformer and equipment shall have been designed, fabricated, assembled and tested so that upon installation and operation in accordance with manufacturer's recommended procedures for this application the equipment will conform with all applicable codes and standards including, but not limited to, the following:
b. American National Standards Institute (ANSI):
i. C39.1 ‐ Requirements for Electrical Analog Indicating Instruments.
ii. C57.12.10 ‐ Requirements for Transformers, 230kV and Below, 833/958 through 8333/10417 kVA, Single‐Phase, and 750/862 through 60,000/80,000/100,000 kVA, Three‐Phase.
iii. C119.4 ‐ Electric Connectors ‐ Connectors for Use Between Aluminum‐to‐Aluminum or Aluminum‐to‐Copper Bare Overhead Connectors.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 33 of 68
c. Institute of Electrical and Electronics Engineers (IEEE):
i. C2 ‐ National Electrical Safety Code.
ii. C57.12.00 ‐ General Requirements for Liquid‐Immersed Distribution, Power, and Regulating Transformers.
iii. C57.12.90 ‐ Test Code for Liquid‐Immersed Distribution, Power, and Regulating Transformers and Guide for Short‐Circuit Testing of Distribution and Power Transformers.
iv. C57.13 ‐ Requirements for Instrument Transformers.
v. C57.19.00 ‐ General Requirements and Test Procedure for Outdoor Power Apparatus Bushings.
vi. C57.19.01 ‐ Performance Characteristics and Dimensions for Outdoor Apparatus Bushings.
vii. C62.11 ‐ Metal‐Oxide Surge Arresters for AC Power Circuits.
viii. C62.22 ‐ Application of Metal‐Oxide Surge Arresters for Alternating‐Current Systems.
d. National Electrical Manufacturers Association (NEMA):
i. ICS 1 ‐ Industrial Control and Systems.
ii. LA 1 ‐ Surge Arresters.
iii. TR 1 ‐ Transformers, Regulators and Reactors.
iv. 107 ‐ Methods of Measurement of Radio Influence Voltage (RIV) of High‐Voltage Apparatus.
e. National Fire Protection Association (NFPA):
i. 70 ‐ National Electrical Code.
2) The acceptable manufacturers are as follows. (The location of origin shall be included with each bid and may be a determining factor in the customer’s Vendor selection. It is preferred that the transformer be manufactured in the Contential United States.)
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 34 of 68
a. ABB
b. SPX ‐ Waukesha Transformers
c. Prolec GE
d. Siemens
In the event of contradictory requirements between ANSI standards and these specifications, these specifications shall apply. The autotransformer shall have the full MVA rating at the specified switchyard elevation. All bolts, nuts, washers, and locknuts outside the autotransformer tank shall be stainless steel.
B. RATINGS AND FEATURES
The autotransformer shall be suitable for continuous operation at elevations up to 3300 feet above mean sea level. The autotransformer shall have the following ratings and features:
1) Ratings:
a. Rated Output 60/80/100 (112) MVA
b. Cooling Class: ONAN/ONAF/ONAF
c. Temperature Rating: 55°C average winding rise at 50°C maximum ambient at 112 MVA output, 65°C average winding rise at 50°C maximum ambient at 112 MVA output
d. HV Winding: 230 kV, wye‐grounded connected, 900 kV BIL
e. HV Taps (in kV): 241.5, 235.75, 230, 224.25, 218.5 (De‐energized off‐load)
f. HV Bushings: 900 kV BIL, with 230 inches, minimum creep distance
g. LV Taps (in kV): 69, (62.1 to 75.9 Range) with 5/8% taps: 16 up and 16 down plus nominal Automatic, on‐load)
h. LV Bushings: 350 kV BIL, with 48 inches minimum creep distance Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 35 of 68
i. TV Winding: 12 kV, delta connected, 150 kV BIL
j. TV Bushings: 150 kV BIL, with 11 inches minimum creep distance
k. Neutral Bushing: 350 kV BIL, with 48 inches minimum creep distance
l. Tertiary Displacement: 30° with tertiary voltage leading the high voltage
m. Frequency: 60 Hz
n. Impedance: 7% +/‐ 0.7% at 230 ‐ 69 kV
3.5% +/‐ 0.35% at 230 ‐ 12 kV
1.1% +/‐ 0.11% at 69 ‐ 12kV
o. Control Voltage: 48 VDC
p. Auxiliary Voltage: 120/240 VAC
2) Rating Conditions
a. Operating temperatures. The autotransformer shall be capable of operating at the specified loading and temperature rises and under no‐ load conditions when installed in the following worst‐case ambient temperatures:
i. Average ambient temperature for 24 hours is +45°C
ii. Maximum ambient temperature is +50°C
The autotransformer shall be designed for operation at the specified ratings and under the specified conditions with an average winding temperature rise by resistance that does not exceed 55°C, a hottest spot winding temperature rise that does not exceed 75°C, and temperature rise of the top oil that does not exceed 65°C.
b. Short‐Circuit Withstand Capability. The autotransformer shall be capable of withstanding the short‐circuit requirements and tests of ANSI/IEEE C57.12.00, Section 7. Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 36 of 68
The autotransformer shall be designed with adequate bracing and support of windings, to withstand the forces resulting from the maximum short‐circuit currents that can flow in any winding due to a fault on any winding when connected to fault current sources with impedances as given in ANSI/IEEE C57.12.00, paragraph 7.1.5.3, Table 16. The autotransformer shall be designed to withstand the winding temperature rise resulting from such short‐circuit currents.
c. Audible Sound Level. The sound level shall not exceed 79 dBA at the ONAN rating, 81 dBA at the first stage ONAF rating, and 82 dBA at the top forced cooled ONAF rating when measured in accordance with the procedures in ANSI/IEEE C57.12.90 ‐2010, Section 13.
C. MANUAL TAP CHANGER
1) An externally operated, manual, off‐load, de‐energized tap changer shall be furnished with the power autotransformer for the 230‐kV high‐voltage winding. All tap changers shall provide ± 2.5% and ± 5.0% voltage tap positions in addition to the nominal 230 kV tap position.
2) The tap changer shall be designed for convenient operation by a person standing on the same level as the autotransformer base. It shall include a manual hand wheel; tap position indicator, and a means for locking the tap changer in any tap position. The locking device shall be arranged to prevent locking the tap changer in an off tap position and shall be suitable for use with a standard size owner‐ furnished padlock.
D. AUTOMATIC LOAD TAP CHANGER
1) Automatic On‐Load‐Tap‐changer shall be designed to conform to IEEE Standard C57.131 and applicable portions of IEEE Standard C57.12.10.
2) The tap‐changer automatic primary and backup voltage regulators shall be Beckwith M‐2001‐C and M‐0329B units with all necessary accessories. Control and communications equipment and wiring shall be made capable of remote control and monitoring from supervisory station that is approximately 200 ft from the autotransformer. In addition, all output contacts from automatic voltage regulator for alarms, status and control shall be hardwired to terminal blocks in the autotransformer control cabinet.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 37 of 68
3) Tap‐changer equipment shall provide automatic regulation of the nominal 69‐kV voltage output over a range of plus or minus 10 percent automatic adjustment in steps of approximately 5/8 percent each with 16 steps above and 16 steps below rated low voltage and local and future remote electrical, manually actuated, and automatic control. This autotransformer shall be capable of delivering rated kVA at the rated low‐voltage position and on all positions above and below rated 69‐ kV voltage. Provisions shall be made on this autotransformer for manually moving the tap changer for adjustment and test. Facilities shall also be furnished for remote and local tap position indication.
4) The tap‐changer mechanism manufacturer shall be Reinhausen (MR). The design of the tap‐changer mechanism shall be such that the mechanism will not stop in an intermediate position. However, if the mechanism through misoperation does stop in an intermediate position, the design shall be such that full load can be carried by autotransformer continuously without injury to any component. The moving contact assembly shall be self‐aligning and, when in closed position, heavy contact pressure shall be applied. All current‐carrying parts shall be of sufficient area and cross section to ensure a temperature rise under full‐load conditions not to exceed 18°C. The tap‐changing device shall be designed to withstand the applied potential test of the winding to which it is connected. The tap‐changer mechanism shall be motor driven and shall be mechanically capable of performing 400,000 operations, and the tap changer contacts shall be capable of performing 200,000 operations at full load without the necessity of replacing or rebuilding any of the parts. The completely assembled tap changer shall be capable of withstanding, without damage, the maximum short‐circuit stresses which would be imposed upon it when the autotransformer itself is subjected to short‐circuit currents in accordance with the requirements as specified in this solicitation.
5) Those elements of the tap‐changing‐under‐load mechanism which may cause sparking during operation shall not be placed in the autotransformer main tank but must be located in a separate compartment to exclude the possibility of contamination of the oil in the main tank. Connections from the main tank to the tap‐changer compartment shall be made by means of entrance bushings with compression flanges or other equally effective method of preventing interchange of oil between the autotransformer main tank and the tap‐changer compartment.
6) The tap‐changer compartment shall be dehydrated via a maintenance free dehydrating breather (Messko preferred.) Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 38 of 68
7) Vacuum switching technology shall be used in lieu of arcing contacts.
8) An operation counter shall be furnished to record the number of tap changes.
9) Terminal and a control cabinet shall be furnished on the autotransformer. All cabinets shall be as described in Section 1.4, Subsection “O” (Control Cabinet and Terminal Boxes).
10) The tap‐changer shall have:
a. A tap position indicator
b. A device for manual operation with the control circuit disconnected from the power supply.
c. Means to remotely monitor tap position.
11) Transformer tap‐changer controls, in the autotransformer control cabinet, shall provide the functions described below:
Manual electrical "raise‐lower" operation from the local controls at the autotransformer control cubicle and from a remote location. Simultaneous local and remote operation shall be prevented by a control switch.
Enabling and disabling of automatic control from the local controls at the control cubicle and from a remote location. Manual electrical "raise‐lower" operation shall be allowed only when automatic control is disabled.
12) Nameplate(s) shall be provided in accordance with IEEE standards C57.12.10 and C57.131.
E. BUSHINGS
1) The bottom of each bushing‐mounting flange shall be a minimum of 8.5 feet above base of the autotransformer. The bushings are to be a porcelain type, and shall conform to ANSI/IEEE C57.19.00‐2004 and C57.19.01‐2000.
2) All porcelain used in bushings shall be wet process, homogeneous, and free from cavities or other flaws. The glazing shall be ANSI 70 light gray, uniform in color, and free from blisters, burns, and other defects.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 39 of 68
3) Each high‐voltage and low‐voltage bushing shall have a capacitance tap for use with a bushing potential device having a burden as shown in Table 3‐4 of NEMA Publication No. SG 4‐2009 with table A‐1 of NEMA publication No. SG4‐2009.
4) Porcelain parts of each bushing shall be of one piece.
5) If spare bushings are supplied as a part of this order, they shall be properly crated for long‐term, outdoor storage. This requirement includes making the crate suitable for storing the bushings at the manufacturer’s recommended angle of elevation.
6) The 230 and 69 kV bushings shall be draw‐lead connection type bushings.
7) Bushings manufactured by Trench Electric shall not be used.
F. WINDINGS
1) Winding conductors shall be copper free from scale, burrs, and splinters, and shall be insulated with paper. All insulation shall be of uniform high quality and void free. Permanent current‐carrying joints or splices shall be welded or brazed, properly formed, finished, and insulated, except that compression‐type fittings may be used outside of the core winding using compression fittings that have been proven suitable for the purpose.
2) The autotransformer shall utilize conductor and lead insulation of specially treated paper to increase the thermal stability of the insulation; to maintain the required tensile, bending, and bursting strengths; and to insure normal life expectancy.
3) If transposed conductor is utilized for the autotransformer windings, polyvinyl acetal or formal film insulation may be used to insulate the strands of the transposed conductor provided the specially treated paper is used as the main conductor insulation.
4) The completed winding assembly shall be securely held in place so that there will be no disarrangement or deformation by stresses incident to shipment. The autotransformer, windings, core, and accessories shall be protected from being damaged by vibration during operation, transportation, or short circuits.
5) The completed winding assembly shall be circular in shape.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 40 of 68
G. CORE
1) Nuts, bolts, and clamps of the core assembly shall be provided with positive locking devices to prevent loosening by vibration or change of shape or position during transportation or operation.
2) The core shall be securely grounded to the tank. An external core ground (through a bushing) shall be provided to allow testing the core ground without exposing the internal parts to possible contamination and connected to the tank with a detachable connector. The assembly shall be enclosed with a removable cover. If a threaded bushing is used, the enclosure formed by the removable cover shall be oil tight.
3) Demagnetize the core just prior to shipping the autotransformer.
H. OIL PRESERVATION EQUIPMENT
1) The oil preservation system provided shall operate with transformer temperature changes attained between de‐energized condition with all parts of ‐ 7°C ambient air temperature and up to 110 percent maximum rated load condition with ambient air temperature at 49°C.
2) The autotransformer shall be equipped with the following system of oil preservation as defined in ANSI/IEEE C57.12.80:
a. Constant Pressure System: The separation of oil from the atmosphere shall be accomplished by means of inflatable and deflatable cells or diaphragms. The cells or diaphragms shall be confined to auxiliary tanks. The cells or diaphragms shall vent air to the atmosphere by means of a watertight breather. If a cell or diaphragm is damaged, the unit shall fail safe, by acting as a conservator.
3) A sinking cell or broken diaphragm shall activate an alarm. The transformer shall have means of isolating the auxiliary tanks during installation and inspections. The auxiliary tanks shall be equipped with a sump chamber and drain valve. A pressure‐vacuum bleeder shall protect the system in the event of incorrect overfilling or under‐filling during installation.
Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 41 of 68
I. TANK
1) The shell, cover, and bottom of each tank, including auxiliary tanks, shall be of welded steel plate construction with all seams welded so as to remain oil tight and gastight.
2) No corner welds on the tank are allowed. The corners of the tank are to be formed steel plate with the first weld to be a minimum of 6” from the corner.
3) During welding of the autotransformer cover, an inorganic gasket shall be permanently located between the cover and the tank flange to prevent weld spatter from entering the tank. Flanged horizontal joints, which must be broken to untank the core and coil, shall be designed for breaking and remaking in the field.
4) The tank, except auxiliary tanks vented to the atmosphere, shall be capable of withstanding, without leakage or permanent distortion, an internal pressure of 15‐pounds per‐square‐inch gauge and of withstanding a vacuum which produces a differential pressure of 15 pounds per square inch across the tank wall.
5) Auxiliary tanks normally vented to the atmosphere shall be capable of withstanding a differential pressure of 5 pounds per square inch.
6) All flanged joints shall be provided with gaskets set in grooves or held in position by stops to prevent over‐compression of the gaskets. The gaskets shall be of resilient material that will not deteriorate under the action of hot oil and will remain oil tight.
7) Stiffeners required for the tank shall be selected and arranged in order to minimize the collection of dirt particles, rain, or snow.
8) Lug and jacking pads shall be provided for moving and lifting the autotransformer either by crane or by jacks. Jacking pads shall be suitable for jacking the complete autotransformer filled with oil. Jacking pad dimensions shall be shown on the manufacturer provided autotransformer outline drawing.
9) A manhole of sufficient size to permit the removal of the bushing current transformers shall be furnished in the tank cover.
10) The construction of the main tank, auxiliary tanks, and the oil‐preservation apparatus shall be such as to insure an adequate cushion of gas in applicable parts of the apparatus for the following conditions: Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 42 of 68
a. Internal Gas Pressure: For any of the systems of oil preservation, except the sealed tank system, the internal gas pressure shall be not less than 0 pounds per square inch nor more than 5 pounds per square inch, with autotransformer temperature changes attained between reenergized condition and up to 110 percent maximum rated load condition with ambient air temperature range as given in 1‐4 B.2.a above. For the sealed tank system, the internal gas pressure limits may be increased to those values given in ANSI C57.12.10.
b. Loss of Gas or Oil: If an inert gas‐pressure system or a constant pressure system is furnished, either system shall operate without loss of gas or oil and without loss of the seal between the autotransformer interiors and atmosphere over the entire temperature range and operating conditions.
J. TANK BASE
The autotransformer tanks shall be provided with a fabricated structural‐steel base. The base shall be designed and built so as to allow skidding or moving on rollers in either direction. Flat plate bases without internal or external reinforcing structural members are not acceptable.
K. EARTHQUAKE AND WIND DESIGN LOADS
The autotransformer shall be designed and built to withstand repeated earthquake forces in any direction, under severe wind velocity of 80 miles per hour (non‐ simultaneous) and dust condition without damage to component parts and without impairment of operation. The seismic forces to which the switches may be subjected are
defined by the following criteria. The soil site class is D. SS, the spectral acceleration for
short periods, is 0.5. S1, the spectral acceleration for a 1‐second period, is 0.16. Refer to Section 1‐5 for complete seismic requirements for the autotransformer.
L. COOLING EQUIPMENT
1) The autotransformer shall be designed with radiators or cooling units to provide for operation at the ratings and temperature rises indicated in these specifications.
2) The cooling units shall be connected to the tank by bolted, machined steel flanges, with the flanges welded to the cooling units and to the tank. Flanges shall be provided with gaskets and valves and shall be installed on each cooling
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unit connection, so that any individual cooling unit may be removed without taking the autotransformer out of service.
3) An oil tight, blank flange shall be provided for each connection, for use when cooling units are detached. Each cooling unit shall have a lifting eye, an oil drain, and a vent. If the cooler units furnished are of the finned‐tube type, the tubes, fins, and tube sheets shall be designed to permit replacement of individual cooler tube groups.
4) The autotransformer shall be capable of operating with the conditions outlined in ANSI/IEEE C57.91, paragraph 9.8.
5) Fan motors shall be of the totally enclosed design. Fan motors shall operate from a 240V, single‐phase, 60‐Hz power supply.
6) Cooling fans shall be electrically connected in two stages with thermal relays to start each stage at different autotransformer temperatures.
7) The leads for the fan motors shall be enclosed in liquid tight, flexible conduit. As an alternate, the connections to the supply circuits may be made by means of watertight plugs and receptacles provided the interconnecting cables are moisture and sunlight resistant mechanically protected by use of ducts or flexible conduits. Flexible conduit shall be sunlight resistant.
8) The control equipment for fans shall include a circuit breaker for the incoming circuit and for each stage group of fans; contactors with overload protection in each phase, selector switches for Stage 1 and Stage 2 MANUAL‐OFF‐AUTOMATIC and Stage 1 or Stage 2 First, and any other necessary devices. The Vendor shall furnish all control transformers, fuses, circuit breakers, indicating lamps, terminal blocks, magnetic‐type starters and un‐fused disconnect switches, test pushbuttons or switches, and auxiliary and timing relays for the control, protection, annunciations, and remote indication of the fans.
9) Control switches shall have at least one spare contact in each switch position. The switch identification shall be engraved on the escutcheon plate or, if necessary, on a separate adjacent nameplate furnished by the Vendor.
10) Fuse cartridges and their clips shall be mounted inside the cover of the fuse enclosure, and shall be disconnected from the circuit when the cover is removed for fuse replacement.
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M. ACCESSORIES
1) Winding Temperature Relays: A winding temperature relay, current transformer and a heater well shall be installed in the winding of at least one phase, and shall be responsive to the loading in such winding. Each relay shall be equipped with three electrically separate, adjustable sequence contacts set as recommended by the autotransformer manufacturer for the service temperatures specified. Typical settings are 75ºC, 95ºC, and 110ºC, for operation of fans, alarm, and trip, respectively. Each relay shall be furnished with a dial‐type thermometer on the tank for hotspot indication. Accessory equipment shall also be furnished for automatic control of the cooling equipment, if required, from the winding temperature relays.
2) Sudden Pressure Relay: A separate fault pressure relay shall be provided for the main compartment tank. The relay shall be actuated by sudden pressure rise inside the main tank and shall not operate on gradual pressure change within the normal operating range of the autotransformer. The sudden pressure relays, auxiliary relays, and control switches shall be mounted in such a way that mechanical vibration, such as that due to a close‐in fault, will not cause false operation of the relay scheme.
a. The relaying scheme shall provide two normally open; electrically separate contacts, one for tripping and one for alarm. The tripping circuit will operate a hand‐reset auxiliary tripping relay located in the service building.
b. Seal‐in Relay: The Sudden pressure relay shall have seal‐in features as required to insure proper tripping and to prevent false tripping. An operations indicator or target shall be furnished with the auxiliary relay to provide positive indication of the operation of the sudden pressure relay. If possible flashover of the sudden pressure relay contacts due to voltage transients is inherent in the scheme, a normally closed contact from the sudden pressure relay shall shunt the coil of the trip or seal‐in relay. Surge protectors shall be provided across the external tripping contact in order to prevent false operation of the auxiliary tripping relay in the service building. The scheme shall be self‐resetting at the sudden pressure relay on the autotransformer tank; the seal‐in relay shall maintain the trip output until the reset switch is depressed.
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3) Winding Hotspot Temperature Detector: On each winding of at least one phase of the autotransformer, a detector of the resistance type shall be furnished with the necessary accessories, arranged for remote indication for use with temperature indicators and future us with City of Boulder City‐furnished data logging equipment. Each detector shall be a standard 100 ohm copper unit (100‐ ohm at 0ºC), 3‐ or 4‐wire sensor having an accuracy of plus or minus 0.3ºC and a sensitivity of 0.04 ohms/ºC. The detector shall be calibrated to reflect the maximum hotspot temperature that can occur in any winding in any tap position. The detector leads shall be terminated on terminal blocks in the control cabinet on the autotransformer.
4) Pressure Relief Devices: On the Main Tank and on the Load‐Tap‐Changing Compartment Containing Oil. The devices shall be provided in the top cover of the main tank and in the top cover of the load tap changing compartment. The device shall be self‐resetting, without the use of expendable parts. The device, and all parts thereof, shall have a service life comparable to that of the autotransformers of which it is part. Semaphore and alarm contacts shall be provided on the device to give visual and electrical indication of operation.
5) Oil Fill and Drain Valves: Provide as per ANSI C57.12.10. Provide for main and LTC tanks. The drain valve is to be furnished with oil sampling device and shall be a globe type.
6) Liquid Thermometer: Provide dial‐type top liquid thermometer on the main tank with adjustable alarm and trip contacts set at 100ºC and 120 ºC respectively, or as recommended by the autotransformer manufacturer.
7) Oil Level Gauge: Provide two oil level gauges, one each for main and LTC tanks. Provide gauge with one low‐level contact for alarm and one additional lower‐ level (critical level) (main tank only) contact for tripping.
8) Loss of AC Relay: Provide a relay with at least one contact for alarm, for loss of AC supply to the autotransformer.
9) Fans Overload Relay: Provide a relay with at least one contact for alarm, for an overload of autotransformer fans.
10) Diagrammatic nameplate: Nameplate information shall be etched, stamped, or engraved into the metal of the nameplate using either cast bronze or stainless steel. It shall be sun and fade resistant. The nameplate is to include all the information as required by ANSI/IEEE C57.12.00, Table 10. The main nameplate Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 46 of 68
or an adjacent nameplate shall include the following information for each current transformer furnished: the accuracy class, the primary and secondary ampere ratings, secondary thermal rating factor, and identification of the terminals to which the current transformer installation and ratings applies. All nameplates shall be mounted to be easily accessible, viewable, and mounted at or below eye level.
11) Pressure‐Vacuum Gauge and Relay: Provide the gauge as per ANSI C57.12.10. The relay shall have at least one contact for alarm, for vacuum bottle failure (Not required if conservator system is supplied)
12) Grounding Pads and Cable: Two grounding pads (per ANSI standards) on and near the base of the autotransformer tank and grounding pad terminal connectors suitable for #4/0 AWG through 500 kcmil copper cable for each pad, shall be provided. In addition, one grounding pad and terminal connector shall be mounted on the autotransformer tank near the base of each set of arresters and the neutral bushings. The Vendor shall provide bare copper cable or equivalent copper bus bar, neatly and rigidly secured to the tank for support, from each of the grounding pads at the base of the autotransformer tank up to the surge arresters and neutral bushing pads, interconnected at the top of the tank to the required points to be grounded. The minimum size of the bare copper cable to be furnished for surge arrester grounding on the autotransformers is #4/0 AWG copper cable or equivalent copper bus bar may be furnished. The minimum size of neutral bushing grounding shall be 500 kcmil (100 mm²) bare copper ground cable or equivalent copper bus bar. The exposed copper cable or bus shall be painted gray to match the autotransformer to deter theft.
13) Pressure Vacuum Bleeder: Provide only when a sealed tank system is supplied.
N. CONTROL CABINETS AND TERMINAL BOXES
1) The Vendor shall furnish and install a control cabinet on the autotransformer, and provide as many terminal boxes for current transformer wiring near each bushing as required on the autotransformer, and shall complete the wiring from the terminal boxes to the control cabinet. All leads connecting the current transformers, the accessories and the control cabinet, shall be enclosed in conduit, and terminate within the control cabinet on the autotransformer.
2) All termination of current transformers leads shall be on conveniently located short‐circuiting type terminal blocks manufactured by GE or Marathon only, no Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 47 of 68
substitutions will be allowed. Acceptable short‐circuiting type terminal blocks are as follows:
a. Marathon Catalog No. 1506 SC
b. GE Catalog No. EB27B06S
3) The control cabinets shall be provided with a hinged, gasketed cover and a gasketed, removable plate in the bottom, which can be drilled in the field for conduits and large enough to accommodate four 4‐inch conduits. External circuits will enter the bottom of the cabinets through exposed, weather tight rigid conduit. All cabinets shall be NEMA Type 4, dust tight, rain tight, and sleet resistant. All cabinets shall also have an IP66 rating.
4) The height, width, and depth of the cabinets, and the bottom of the cabinets to the bases of the autotransformer dimensions, shall be shown on the outline drawing of the autotransformer. The cabinets shall be mounted with the bottom of the cabinets at least two feet above the ground. Location of conduit plate shall be clearly indicated on drawings.
5) Control cabinets shall contain the following:
a. Copper grounding bar, 1 inch wide and 1/4 inch thick and long enough to terminate all ground connections, but not less than 12 inches long for control cabinets. The bar shall be located in a convenient position near the terminal blocks for grounding of shielding and ground conductors of incoming control and power cables
b. Terminal blocks for terminating the wiring from all transformer accessories.
c. Short‐circuiting‐type terminal blocks for terminating each tap lead from each bushing‐type current transformer.
d. Heavy‐duty terminal blocks for incoming power circuit leads.
e. Receptacle Outlet: A weatherproof, separately fused, 15‐amp, 125‐V, 2‐ pole, 3‐wire, polarized, duplex, grounded receptacle outlet with a built‐in ground‐fault circuit interrupter connected to a 120‐V ac supply shall be furnished and mounted on the outside of the control cabinet so that it is available for use without opening the mechanism cabinet door. The interrupter shall automatically interrupt the circuit for ground fault Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 48 of 68
currents of 5 milliamps or greater and interrupt ground‐fault currents within 1/30 of a second. Each receptacle shall have a test button to check the operation of the interrupter and a reset button that moves to a trip‐indicating position upon operation of the interrupter. Receptacles shall have NEMA standard configuration 5‐15R, shall fit in a standard single‐gang box, and shall be furnished with a cast‐metal weatherproof cover plate having a spring‐loaded, gasketed lift cover. Receptacles shall be Pass and Seymour Catalog No. 1591, or equal.
f. Control Cabinet Lighting: A LED light equipped with a safety shield shall be provided to adequately illuminate the interior of the cabinet. An automatic pushbutton light switch actuated by opening the cabinet door shall be provided to control the light. The light shall be connected to the 120‐V ac supply circuit.
g. One or more space heaters shall be mounted in the control cabinet to prevent condensation. The heaters shall be located so as not to damage incoming cables or other equipment. The electric power for the heater circuit shall be thermostatically controlled with provisions for disconnecting the ac power source. The heaters will be connected to a 240VAC, single‐phase source.
O. TERMINAL BLOCKS
1) Terminal blocks for power wiring shall be of the heavy‐duty type for insulated copper cable. The size of this cable will be determined by the City of Boulder City after actual power requirements of the autotransformer are known.
2) Terminal blocks for control wiring shall be rated at least 600 V and 30 amps. They shall be suitable for use with #10 AWG wire; shall be molded‐block type to accommodate ring lugs 1/2‐inch wide (outer diameter) at the terminal screws; shall be furnished with binding‐head or washer‐head screws having serrated or grooved contact surfaces or having lock washers; and shall be furnished with molded insulating barriers between terminals. Each terminal block shall have a removable marking strip. Examples of terminal blocks meeting the above requirements are:
a. Marathon, Catalog No. 1512STD
b. General Electric Company, Type EB25B12
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3) The arrangement and location of the blocks shall be such that incoming and outgoing cables can be supported.
4) Approximately 15‐percent spare terminals shall be provided for terminating spare conductors in each control cable and for possible future use.
P. CONTROL WIRING
1) Control wiring shall be performed with switchboard‐type, #14 AWG, Class B stranded, copper conductor, rated for 600‐V service, with NEC Type SIS insulation. The current transformer secondary leads shall not be less than #10 AWG.
2) All terminations of wire shall be made with preinsulated, pressure‐crimp‐type terminal connectors with ring tongues equal to AMP "Plastic‐Grip" terminals manufactured by Aircraft‐Marine Products, Harrisburg, Pennsylvania. Exposed wiring shall be kept to a minimum and, where used, shall be formed into compact groups bound together and firmly supported and shall be run straight, horizontally, or vertically with short radius right angle bends. Hinge wiring shall be twisted around the longitudinal axis of the wire, wherever possible, instead of being bent laterally. Each wire shall be protected from abrasion where it leaves a channel or duct. There shall be no splices in the wiring, and all connections shall be made at device studs or terminal blocks. There shall be no more than two wires terminated at each terminal point. Wire sizes # 8 AWG, or smaller, shall be terminated at terminal blocks. Wire sizes larger than # 8 AWG shall be connected directly to terminal studs.
Q. INSULATING OIL
1) General: All electrical equipment shall be designed to operate with oil that conforms to the requirements of the latest revision of ASTM D 3487, "Mineral Insulating Oil Used in Electrical Apparatus", except that for oil‐filled bushings the manufacturer's standard insulating oil is acceptable. Electrical equipment with insulating liquids containing polychlorinated biphenyls (PCB) is not acceptable. Equipment including bushings requiring insulating oil shall be permanently marked and certified that there are no more than 2 parts per million PCB present when the equipment is manufactured. If the oil is shipped separately, the Vendor shall also furnish certification that the oil meets the EPA requirements or the State requirement (whichever is more stringent) for non‐PCB when the oil is delivered to Boulder City. The oil truck driver shall have in his possession and furnish this certification to Boulder City upon arrival at the delivery site. Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 50 of 68
2) Sampling and Testing: Certified results of tests which demonstrate compliance with ASTM D 3487 and these specifications shall be furnished.
3) Copies of certified report of the tests shall be furnished as required by Section A.7 (Drawings and Data to Be Furnished by the Vendor).
4) Delivery: The oil shall be delivered within the time frame as required by the delivery schedule for the autotransformer.
R. FACTORY ASSEMBLY AND TESTS
1) The autotransformer shall be completely assembled at the factory and shall be subjected to the tests described in this section. Test instrument requirements shall be in accordance with ANSI C39.1‐1999 for 0.25‐percent accuracy or shall be in accordance with National Bureau of Standards Technical Note 1204. Prior to testing, the transformer oil shall be circulated through the autotransformer and heat exchangers if required.
2) The Vendor shall furnish, as a part of the report on factory tests, sample calculations and the formulas used in determining the results of the tests. The reports furnished and submitted to Boulder City as proof of the impulse test withstand shall include all necessary oscillograms.
3) Impulse Test: These tests shall be performed in accordance with ANSI/IEEE C57.12.90, paragraphs 10.2 and 10.3, on each terminal of the autotransformer, including the neutral. Ungrounded terminals not being tested may be protected by a gap providing the gap does not flash over during the test. The Vendor may perform other impulse tests desired after the initial reduced‐wave and prior to the last two chopped‐wave and the final full‐wave tests.
4) No further impulse testing shall be performed after the test is accepted. Ground current measurements in accordance with paragraph 10.3.4.1 of ANSI/IEEE C57.12.90 also shall be made and the method used for detection of insulation failure shall be the comparison of waves. Simultaneous oscillograms shall be taken of the impulse voltage applied to the tested terminal and, except for the chopped‐wave tests, the voltage from a suitable shunt connected to measure neutral or ground current. The records for the reduced wave and final full wave shall have identical amplitudes to aid failure detection by superimposing the oscillograms of the test waves. The minimum height of each individual trace (at maximum deflection) shall be 30 mm. The criteria for failure detection shall be in accordance with ANSI/IEEE C57.12.90, paragraph 10.3.4. Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 51 of 68
5) Insulation Power Factor Test: Insulation power factor shall be measured and reported.
6) Applied Potential Test: At either 50 Hz for 72 seconds or 60 Hz for 60 seconds. The applied‐voltage test levels for the 230 kV terminals, the 69kV terminals, and the neutral terminals per Table 6 of IEEE C57.12.00.
7) No‐Load Loss: No‐load loss by the average‐voltage voltmeter method to be made after the impulse test.
8) Impedance Including Load Loss: Load loss tests shall be made for the loading condition as given under "Guaranteed Losses" in Section 1.2. Tests may be made at 50 Hz. Impedances measured at 50 Hz shall be converted to 60‐Hz values. Impedances shall be measured on all taps.
9) The Vendor shall also provide measured values for the zero sequence impedances and record the values in equivalent T‐form, if applicable (both R and X values).
10) Total Losses: Total loss data shall be furnished for the loading condition as given in Section 1.2. If tests performed under S.7 above were made at 50 Hz, the load loss shall be adjusted to 60 Hz by the following formula: adjusted load loss equals 1.05[I²R+(1.44) (stray loss at full load)]. The total losses to be used for actual loss evaluation will be the sum of the 60‐Hz load loss (by test or adjusted) and the no‐load loss, and the power required for the cooling equipment.
11) Temperature Rise: Certified test results will be acceptable if previously performed on a thermally duplicate transformer.
12) Optional Temperature Rise Test: At customer’s option, a standard heat run test per ANSI/IEEE C57.12.90 shall be performed. The average winding temperature rise and top oil temperature rise at the base ONAN rating, and at the top rating shall be measured. Bottom oil rise shall also be measured during the test. The maximum (hottest‐spot) winding temperature rise above ambient temperature shall be included in the test report with the other temperature rise data. These tests shall be made with the no‐load taps in the position that results in the highest total losses.
13) Resistance Measurements: Resistance measurements of all windings on the rated voltage connection and at the tap extremes.
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14) Ratio Tests: Ratio tests on the rated voltage connection and on all tap connections.
15) Polarity Tests: Polarity and phase‐relation tests on the rated voltage connection.
16) Induced Potential: Induced potential tests on each high and low‐voltage winding shall be made. The test voltage may be induced within the autotransformer under test rather than applied by a separate transformer. The 3‐phase autotransformer shall be excited from a 3‐phase source.
17) Bushing Design Tests: The Vendor shall furnish certification that each type, style, and model bushing furnished has passed the test requirements of IEEE C57.19.00. The Vendor shall supply the acceptable range of Doble Power Factor Test Data particular to each bushing furnished for the City of Boulder City's use in the future testing of the bushings.
18) Cooling Units and Tank Leak Test: Cooling units and tank leak test at the maximum operating tank pressure but not less than 5‐pounds‐per‐square‐inch gauge.
19) Current Transformer Tests: Each current transformer shall be tested in the factory of the Vendor in accordance with ANSI C57.13.
20) For Bushing‐Type (C Class) Current Transformers:
a. Thermal and mechanical short‐time current ratings. (Certified test data on a current transformer of the same type and design is acceptable.)
b. Excitation curves in accordance with ANSI C57.13, paragraph 6.10.2. (Curves obtained from actual tests on identical transformers will be acceptable.)
c. Winding resistance.
d. Continuous thermal current rating factor. (Certification)
e. Applied potential, for 3,600 cycles at either 50 or 60 Hz, of 2,500 V between the shorted secondary winding (including leads) and ground, on each current transformer after installation in the autotransformer.
21) Exciting Current: The Vendor shall provide a calculated exciting curve of percent voltage versus percent exciting current for a range of 90 to 140 percent of rated
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voltage. Test values shall be used, when available, for the range from 90 to 110 percent of rated voltage.
22) Audible Sound Test: A standard audible sound test per ANSI/IEEE C57.12.90 shall be performed. The test shall be performed at rated voltage and frequency shall be measured at the base ONAN rating, and at the top rating.
23) Witnessing of Factory Tests:
a. Notify Boulder City no less than three weeks prior to major factory tests and indicate times for witnessing of tests.
b. The vendor shall allow for sufficient funds in bid to accommodate all travel, lodging, and local transportation (at factory end) expenses for two (2) persons to travel from Phoenix, Arizona and/or Boulder City, Nevada to factory location to witness factory tests.
c. The vendor shall make all travel lodging and local transportation arrangements upon receipt of traveler names from Boulder City.
d. Economy air travel, standard business class lodging (2 rooms) and rental car are considered minimum travel requirements.
24) Test Floor Variances: Any and all test floor incidents that require the manufacturer to remove, replace, increase, or in general change the condition of the transformer under test must be reported to the Owner within 24 hours of the incident.
a. All repairs, modifications, or re‐tests must be discussed and agreed to with the Owner’s approval in advance of any repairs, modifications, or re‐ test being implemented.
b. The penalty for not following the above reporting requirements is the possibility of the transformer being cancelled, at the discretion of the Purchaser.
S. PAINTING
1) Vendor shall assure that the autotransformer surfaces are clean and painted. Coated surfaces shall be protected from abrasion or other damage at all times. Surfaces not to be painted shall be protected by appropriate masking during the
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cleaning and painting of adjacent metalwork. The color shall be ANSI No. 70 light gray.
2) Non‐skid paint shall be applied to top of the autotransformer tank cover. Non‐ skid paint shall not be applied to tank access covers, bolts, nuts, and other removable hardware.
T. SURGE ARRESTERS
1) Surge arresters shall meet all applicable requirements of ANSI/IEEE C62.11‐2012, shall be metal oxide, station class, polymer type, and meet the following requirements.
2) Surge arresters shall have sufficient mechanical strength to withstand, without damage, the mechanical forces that will be imposed on the equipment and meet the same seismic requirements as stated in Section 1.5 for the associated transformer that the surge arresters are mounted on.
3) One surge arrester is to be supplied for each external winding terminal, and mounted on brackets on the autotransformer.
4) Surge arresters provided on the autotransformer shall have the following ratings:
Duty Cycle Max.Continuous Operating Voltage (kV) BIL (kV) Rating (kV) Voltage MCOV Rating (kV)
230 900 192 152
69 350 60 48
12.47 110 10 8.4
5) Arresters shall be mounted on the autotransformer tank with the base at least 8.5 feet above the autotransformer base except as otherwise required.
6) Arrester mounting height shall be such that the terminals are at the same height as that of the bushing terminals.
U. TERMINAL CONNECTORS
1) Terminal connectors shall be furnished on each bushing.
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2) All bushings and surge arresters on top of the autotransformer tank shall be furnished with NEMA Standard CC1‐1993, 4‐hole terminal pads.
V. BUSHING CURRENT TRANSFORMERS
1) All current transformers shall be in accordance with ANSI/IEEE C57.13‐2008. All secondary leads shall be brought to short‐circuiting‐type terminal blocks. All current transformers specified are in addition to those that may be required for operation of temperature relays.
2) For bushing‐type current transformers, the turns between any two taps on the secondary winding shall be uniformly distributed along the entire core.
3) All bushing current transformers shall have standard NEMA/ANSI multi‐ratio taps with five (5) secondary taps and with nominal five (5) amp continuous secondary ratings.
4) Bushing current transformers shall be provided on each bushing as follows:
Overall Accuracy Thermal Bushing Position Function Ratio Class Rating Factor 230kV Line Side Relay 1200/5 MR C800 1.5 230kV Winding side Relay 1200/5 MR C800 1.5
69kV Line Side Relay 2000/5 MR C800 1.5 69kV Middle Relay 2000/5 MR C800 1.5 69kV Winding Side Metering 2000/5 MR C400 1.5 12.47kV Tertiary Relay 1200/5 MR C200 1.5
Neutral Relay 1200/5 MR C800 1.5
W. LIST OF DRAWINGS PROVIDED BY BOULDER CITY
The drawing at the end of the autotransformer specification is made a part of these specifications. This drawing is included with the specifications for illustrative purposes only. See Section 3‐10. Refer to Section 1‐6 for required drawings and data to be furnished by the Vendor.
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1‐5 SEISMIC REQUIREMENTS FOR THE AUTOTRANSFORMER
A. The Vendor shall furnish an autotransformer that meets the seismic requirements and qualification levels of IEEE Standard 693‐2005. All design, calculations, submittal of required data, and required testing shall be in accordance with IEEE 693.
B. Required Qualification Levels: The required qualification level for the autotransformer is as follows:
C. The soil site class is D. SS, the spectral acceleration for short periods, is 0.5. S1, the spectral acceleration for a 1‐second period, is 0.16.C.
D. Submittal of Reports: The Vendor shall submit three copies of reports which contain all required calculations as required by IEEE 693‐2005 for the moderate seismic qualification level.
1‐6 DRAWINGS AND DATA TO BE FURNISHED BY THE VENDOR
All final issued drawings shall be sealed by a Nevada licensed professional engineer.
A. All drawings and technical data furnished by the Vendor shall be in English. Units of measurement shall be in the United States Customary System of Units (feet, inches, pounds, cubic feet or cubic inches) but may also include the Metric International System of Units (SI).
B. The drawings and data shall be complete and accurate in their content. Originals and all copies shall be legible. Drawings shall be prepared and provided to Boulder City using Autodesk AutoCAD 2013 and shall be drawn to scale with scale note on each drawing. Any exceptions to this specification shall be clearly identified on the drawings.
C. All schematic and wiring diagrams shall have graphical symbols and devices function numbers conforming to the latest applicable standards of ANSI/IEEE C37.2, IEEE Standards 315, and 315A.
D. The design and coordination of the electrical equipment shall be the responsibility of the Vendor, and Boulder City assumes no responsibility to approve or review drawings and data that are submitted. Review by Boulder City of the Vendor’s drawings shall not relieve the Vendor of meeting all requirements of these specifications or for the correctness of the drawings. Revised drawings shall show revision dates and all changes and revisions circled on the drawing.
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E. The following Table summarizes the drawings and data required for electrical equipment being furnished under these specifications.
DRAWINGS AND DATA SCHEDULE FOR ELECTRICAL EQUIPMENT
Copies Copies Type of Drawing and Descriptive Delivery Type of to with Data Paragraph Time Document CBC Equipment Informational Drawings At time of Black Line 1‐6‐F 3 1 and Data * bid Prints Parts Identification Lists After bid 1‐6‐G Lists 1 4 or Bills of Material award After bid Spare Parts List 1‐6‐H Lists 1 4 award Manufacturer’s Operation Before and Maintenance 1‐6‐I Equipment Books 1 4 Instructions Shipped Before Certified Equipment Test Reports 1‐6‐J Equipment 1 4 Data Shipped Before Certified Oil PCB Certification 1‐6‐K Equipment 1 4 Data Shipment Before Certified Seismic Report 1‐6‐L Equipment 1 1 Data Shipped Before Digital Photographs 1‐6‐M Equipment Photos 1 1 Shipped
*Informational drawings and data shall be suitable for foundation design, and any costs from changes impacting design and construction will be passed on to the Vendor.
F. Information Drawings and Data: The Vendor shall submit the informational drawings and data for the purpose of enabling Boulder City to proceed with the design of the installation. The dimensions and data shall be firm and not subject to change (typical drawings are not acceptable). The drawings and data shall be suitable for foundation Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 58 of 68
design, and any costs from changes impacting design and construction will be passed on to the Vendor. The submittal shall be identified by switchyard name and contract number. The type of drawings and data to be furnished shall be as follows:
1) Equipment Outline and Layout Drawings: Bills of materials and descriptions giving complete information on each component shall accompany the outline drawings. All major components shall be shown, including the bushings, surge arresters, radiators, hand holes, and manholes. The outline drawings shall show the center of gravity for installation of the autotransformer filled with oil and completely assembled. Also, the center of gravity for shipment of the autotransformer shall be shown on the outline drawings. Also, the following information shall be included on the drawings:
a. Base type and details.
b. Oil preservation system.
c. Equipment weights, including total weight with oil, weight of oil, weight of core and coils, weight of case and fittings, and the weight of the heaviest part to be shipped in one piece.
d. Location of lifting lugs and jacking pads.
e. Overall dimensions.
f. Auxiliary power requirements in kVA at 120/240 V, single phase, 60 Hz.
g. Drawing and information showing the location and details of core grounding connections.
2) Schematic drawing of autotransformer winding connections.
3) Schematic and wiring diagrams for cooling systems, LTC, Trip/Alarm systems, etc. Schematic diagrams shall show point to point wiring.
4) Nameplate drawing(s).
5) Informational drawings and data for the control and protective devices.
6) Control cabinet physical layout drawing (showing layout of all components in the cabinet and conduit entrance).
7) Catalog literature, drawings, including schematics and wiring diagrams. Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 59 of 68
8) Miscellaneous documents: The data shall specifically verify compliance with the equipment requirements and be sufficiently complete to allow preparation of final installation wiring diagrams to be prepared by others.
G. Sets of parts identification lists or bills of materials for the equipment above. Each part shall be assigned an identifying number that can be used for ordering replacements and a reference number that locates the part on the appropriate outline drawing.
H. A listing of the manufacturer’s recommended spare parts shall be furnished. This listing shall include part description, part order number, catalog number, part price, and reference to equipment drawings.
I. Sets of manufacturer's instruction books or pamphlets covering installation, operation, and maintenance repair for the electrical equipment above and for each device appurtenant to the equipment. The instruction books shall include the oil‐filling procedures. A print of each final drawing as required above shall be included in each instruction book. Also include data, instruction manual, and drawings covering the operation, maintenance, and repair of equipment and accessories.
J. Equipment Test Reports: Prior to shipment of the equipment and after completion of those tests required on the electrical equipment, the Vendor shall furnish certified copies of all test reports, performance curves, data, etc. Any equipment which does not successfully pass the testing requirements will be rejected. The reports shall be sent to the destinations listed in Table under Section 1‐6‐E.
K. Insulating Liquid Certification: Certification shall be furnished showing that insulating liquids used in equipment do not contain any PCB’s.
L. Seismic Reports: The Vendor shall furnish seismic reports for the equipment in accordance with the requirements of Section 1‐5.
M. Digital Photographs: Digital photographs shall be supplied on a shipped CD ROM in Windows format. The contents and file format of each disk shall be documented. Included shall be the following views:
1) One view of each side, each end, and the top of the unit un‐tanked.
2) One view of each side, each end, and the top of the unit tanked.
N. Right To Use Vendor's Drawings: Boulder City expressly reserves the right to use, reproduce in whole or in part, to distribute, and to reuse any and all such drawings, whether copyrighted or not, in connection with the following: Boulder City Tap Transformer and Breaker Replacements 69kV Transformer Purchase B.C. Project No. 15-0931-ED(1) 60 of 68
1) Installation, maintenance, replacement, and repair of the articles to be furnished under these specifications
2) Making any and all such drawings and reproductions thereof available to subsequent bidders and Vendors, where necessary for fabricating and furnishing articles connected with or dependent upon information shown on the drawings and duplicating the drawings to be furnished hereunder.
3) The depositing of all such drawings with Boulder City shall constitute a license to Boulder City to use said drawings in the manner hereinabove stated.
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PART 2 – PICKUP, SHIPMENT AND UNLOADING OF MATERIALS
2‐1 SHIPMENT OF EQUIPMENT AND MATERIALS:
A. PACKAGING:
1) Preservation and packaging for shipment and mailing of all items deliverable hereunder shall be in accordance with good commercial practice and adequate to insure acceptance by common carrier and safe transportation at the most economical rates for delivery to the required destination. All applicable tools, appliances, and spare parts shall be shipped with the equipment for delivery to the required final destination and packaged for storage outside.
B. MARKING: Each package, report or other deliverable items shall be accompanied by a letter or other document transmittal which:
1) Identifies the contract by number under which the item is being delivered.
2) Identifies the deliverable Item Number or Report Requirement, which requires the delivered item(s).
3) Indicates whether the Vendor considers the delivered item to be a partial or full satisfaction of the requirement.
4) All crates shall be permanently marked (stenciled) with their weights (lbs) in a manner that allows easy identification before unloading.
C. PACKING LISTS: For each shipment made under this contract, the Vendor shall furnish itemized packing lists, enumerating the specific contents of each shipping container or crate, to the following:
1) One copy to accompany each individual shipment of goods.
2‐2 RECEIPT AND UNLOADING OF EQUIPMENT AND MATERIALS:
A. PLACE OF DELIVERY:
1) Items shall be delivered F.O.B. (Free On Board) to the destination. The Vendor shall unload equipment onto the permanent concrete foundation or to a specific temporary storage location in the switchyard as directed by Boulder City’s representative.
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2) Boulder City Tap Substation: 1.5 miles northeast of the intersection of Utah St. and Canyon Point Rd in Boulder City, Nevada (35°58'46.41"N 114°47'46.33"W). Beyond Utah St. up to the substation, access is via an unpaved dirt road.
3) Vendor shall supply an optional weekly fee for offsite storage of the autotransformer if delays in delivery are required by the City of Boulder City. If this item is used the Vendor will be responsible for determining the location and suitability of the offsite storage.
B. SHIPPING NOTIFICATION:
1) Notification of intended shipment shall be given prior to shipment. The truck driver shall notify the aforementioned contact person when the equipment leaves the factory or storage facility and again 48 hours prior to arrival at the delivery location. The Vendor shall plan to deliver the equipment Monday through Thursday (6 a.m. to 3 p.m.). Equipment placement will be in accordance with the terms and conditions as stated in Section 3‐2 “Erection Services”.
C. TIME OF DELIVERY:
1) Boulder City requires delivery to be made according to the following schedule:
NO SOONER THAN: NO LATER THAN:
OCTOBER 25, 2017 FEBRUARY 28, 2018
2) Boulder City will evaluate equally, as regards time of delivery, offers that propose delivery of each item within the applicable delivery period specified above. Offers that propose delivery that will not clearly fall within the applicable required delivery period specified above will be considered non‐responsive and rejected. Boulder City reserves the right to award under either the required delivery schedule or the proposed delivery schedule, when a Bidder offers an earlier delivery schedule than required above. If the Bidder proposes no other delivery schedule, the required delivery schedule above will apply.
D. LIQUIDATED DAMAGES:
1) If the Vendor fails to deliver the supplies within the specified time in this contract, or any extension granted to the Vendor by Boulder City, the Vendor shall pay to Boulder City, as fixed and agreed, liquidated damages, for each calendar day of delay and late delivery, the sum of $650.00 per day per
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transformer for late delivery of the equipment and for any missing material included with the autotransformer equipment.
2‐3 STORAGE OF EQUIPMENT AND MATERIALS:
A. Once the autotransformer is delivered it will be placed on a concrete pad inside the substation. The autotransformer will be stored at this location until it is energized and put in service.
B. PART 3 – MISCELLANDOUS REQUIREMENTS
3‐1 HOLDBACK FOR DRAWINGS AND DATA:
A. Payment will be made in accordance with the contract General Conditions, Measurements and Payment subsection.
3‐2 ERECTION SERVICES:
A. The Vendor shall unload all equipment promptly when delivered and pay all demurrage charges and claims from damage to vehicles resulting from unloading operations. The Vendor shall be responsible for the proper positioning of all trucks, cranes, equipment, materials, etc. during the unloading process.
B. The Vendor shall inspect all equipment and material for damage and check against shipping receipts for any missing parts.
C. The Vendor shall prepare “Material Reports” for each shipment received, on Vendor provided standard forms. Receipts shall be distributed to Boulder City as well as the Vendor’s file and shall list in detail all items received noting any items damaged or missing as listed on manufacturer's shipping list. "Material Receipts" shall be attached to Boulder City’s copy of the shipping list taken from the equipment received. Material receiving reports shall be filled out, signed, dated, and delivered to Boulder City within 24 hours of receiving the materials.
D. The Vendor shall be responsible for any damage or missing items of stored equipment and material while in his custody.
E. The Vendor shall pay all deposits for shipping containers such as gas bottles, cable reels, etc.; be responsible for the containers while on site; and arrange for their pickup when the contents of the containers have been expended.
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F. Heavy Equipment Hauling:
1) Provide the services of a heavy hauling Vendor experienced in handling equipment of this size, weight, and type (unless evidence can be shown that the manufacturer possesses the proper equipment and skilled personnel equal to that of such a Vendor).
2) Vendor shall secure all permits and make all other necessary arrangements with local street and highway authorities and police as required to obtain use of right‐of‐way, crossing rights, and traffic control for moving equipment from the points of unloading to points of installation. All stipulations for the issuance of permits shall be strictly followed.
3) Vendor shall be responsible for raising or having raised all power cables, telephone cables, service drops, etc., to provide sufficient overhead clearances for equipment. Replace or restore to original condition all items damaged because of heavy equipment hauling.
G. Medium‐Weight Equipment Receiving:
1) Use cranes or fork lifts of sufficient size.
2) Use lifting hooks, eyes, etc., if provided on the equipment for lifting.
3) Use rope or synthetic webbing for slinging materials subject to abrasion.
H. Unloading:
1) The Vendor will perform all on‐truck inspections, unload and haul autotransformer and all auxiliary equipment (bushings, surge arresters, radiators, etc.). Installation on foundation, as may be directed by Boulder City.
2) Level, shim, and prepare for anchoring to foundation, if required, with bolts or cinch anchors.
I. Assembly:
1) The Vendor shall provide, at no cost to Boulder City, personnel to oversee the installation or mounting of all unassembled items and performing other work by City of Boulder City, as required by the manufacturer’s instructions, to make the autotransformer ready for testing.
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3‐3 SAFETY AND HEALTH:
A. All delivery, unloading, and/or assembly operations shall comply with OSHA 1926, Safety and Health Regulations for Construction. Hard hats shall be worn on all construction sites and storage areas. A copy of the crane annual inspection record shall be furnished to Onsite Representative prior to unloading. The representative designated to receive the equipment has the authority to stop all work, or portions of the work, for noncompliance with the above safety and health requirements.
3‐4 SPARE PARTS:
A. The bidder shall include, separately, a list of spare parts recommended for stocking by the Owner for maintenance and repair. These items are to be listed and priced on a per unit basis. The Owner reserves the right to select any, all, or none of the equipment listed at the prices shown. The list shall not include spare bushings and gaskets which are specified and are to be furnished as a part of the base bid. Spare parts identified by Bidder will not be a factor in the bid evaluation performed by the Boulder City when selecting the successful bid.
3‐5 MATERIAL SAFETY DATA SHEETS:
A. The Vendor shall provide Material Safety Data Sheets (MSDS) for each paint, oil, epoxy, insulating medium, curing compound, herbicide, desiccant and other hazardous materials.
B. When shipping the above hazardous materials, the Vendor shall properly label each package with the following information:
1) Common name which matches the name on the MSDS, which should be supplied with the material.
2) Complete identification of any hazardous chemicals.
3) Appropriate hazardous warnings.
4) Name and address of the chemical manufacturer, importer, or other responsible party.
3‐6 SHIPPING PROVISION (IMPACT RECORDER):
A. An impact recorder shall be installed on the autotransformer and the cost for use of the recorder shall be included in the price of the autotransformer. The digital impact
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recorders shall be equipped with GPS technology for on line shipment tracking and reporting of the magnitude of axial, transverse and vertical forces experienced while in transit. The impact recorder shall have sufficient range to cover the time required for the equipment to reach the final delivery destination. Upon arrival at the final destination, the recorder will be returned by Boulder City, freight collect, to the Vendor. The Vendor shall analyze the results, prepare a certified report, and send it to Boulder City within thirty (30) days after receipt of the recorder. The report shall be addressed and sent to the aforementioned contact person providing a summary of findings for the impact recorder. Any impact including or in excess of 5gs shall warrant internal inspection by the vendor with any necessary repairs or adjustments to be made immediately by the manufacturer at no cost, including shipping, additional testing, etc. to the City of Boulder City.
3‐7 FIELD SERVICES:
A. Once the autotransformer is on its foundation the manufacturer shall provide qualified personnel to oversee all tests, inspections, adjustments, etc. as performed by the City of Boulder City construction contractor or as required by the manufacturer to verify proper commissioning and preparation of the autotransformer for operation.
3‐8 STATEMENT OF READINESS:
A. Following completion of the field inspections, adjustments, and tests, the manufacturer's service personnel shall submit 3 copies of a signed statement to the City of Boulder City stating that the autotransformer has been properly installed, adjusted, and tested, and is ready for energization.
3‐9 WARRANTY:
A. The autotransformer assembly shall be guaranteed against defects in materials and workmanship for a minimum period of two (2) years from the date the autotransformer has been delivered to the site. A written copy of the manufacturer’s bumper‐to‐bumper warranty shall be included with the bid.
B. The autotransformer manufacturer shall provide, as an option, the fee to extend the standard warranty to 5 years.
C. Any oil leaks found during the 5 year warranty period shall be fixed at no cost to the Purchaser.
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3‐10 DRAWINGS:
A. See following for drawings associated with this project:
1) Drawing 1: General Component Orientation Plan
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