CCGS Terry Fox 88m Heavy Icebreaker
Bottom Damage
OUTLINE SCOPE OF WORK - Revision 1
Doc. No. 13-106-001
2013-07-31
Prepared For:
Canadian Coast Guard Department of Fisheries and Oceans P.O. Box 5667 St. John's, NL A1C 5X1
Prepared By:
Poseidon Marine Consultants Ltd. 391 Stavanger Drive St. John's, NL A1A 0A1
CCGS TERRY FOX BOTTOM DAMAGE Rev 1 OUTLINE SCOPE OF WORK
REVISION INFORMATION
Rev Date Description Prepared Checked Approved
1 2013-07-31 Issued to Owner's rep. and DDD - TCMS. 0 2013-07-29 Issued to Owner's rep. and DDD RSR TCMS for review and comment.
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TABLE OF CONTENTS
1.0 PURPOSE 2.0 REFERENCE DOCUMENTS 3.0 VESSEL DETAILS 4.0 DEFINITIONS AND ABBREVIATIONS 5.0 PROJECT OVERVIEW 6.0 CONTRACTOR SCOPE OF WORK 7.0 GENERAL NOTES 8.0 QUOTATION 9.0 APPENDIX A - PHOTOGRAPHS 10.0 APPENDIX B - REFERENCE SKETCHES 11.0 APPENDIX C - VESSEL DRAWINGS
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1.0 PURPOSE
This document is intended to describe the general scope of work associated with steel renewals on the subject vessel, as described in Section 6.0 below.
2.0 REFERENCE DOCUMENTS
• See Appendix A for photographs • See Appendix B for reference sketches • See Appendix C for vessel drawings: - General Arrangement - Tank Capacity - Shell Expansion NOTE: supplied as separate documents due to file size
3.0 VESSEL DETAILS
Length: 88.0m Breadth: 17.5m Depth: 10.0m Gross Tonnage: 4233.71t Official #: 803579 Frame Spacing (in way of 500mm damage)
4.0 DEFINITIONS AND ABBREVIATIONS
PMC Poseidon Marine Consultants Ltd. Owner's consultant TCMS Transport Canada Marine Safety National certifying authority Contractor Repair facility bidding on job
5.0 PROJECT OVERVIEW
Subsequent to attendance onboard the subject vessel, the following areas have been identified for renewal based on visual inspection. The areas identified in Section 6 are to be cropped and renewed as original or as otherwise described.
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6.0 CONTRACTOR SCOPE OF WORK
In general, the Contractor shall carry out the steel renewals listed below to the satisfaction of the owner's representative and attending TCMS surveyor. Periodically throughout the renewal process, the contractor is to co-ordinate with the TCMS surveyor so that the repair areas can be viewed to ensure repair is proceeding to their satisfaction. More specifically, TCMS should be notified, after steel has been removed and prior to fit-up of new plate, after fit-up of new plate but before welding commences, and after welding is complete or as may be otherwise agreed.
WORK ITEMS
Double Bottom Fuel Oil Tank #1 Port
1. Longitudinal Girder - (Girder 4321 I.P. off CL - approximately Fr. 114 to 118 1/2)
a. Approximately 7' 6" section of longitudinal girder found set up and buckled in way of bottom damage. Crop and renew 7' 6" long x 1' 6" high, 1/2" thick longitudinal girder plate as per original in way of frames 114 - 118.5
See photograph #1 and sketch #1 attached.
2. Transverse Bulkhead Fr. 105 and Transverse Plate Floors Fr's 106-119
a. Transverse bulkhead plate at frame 105 and 14 transverse plate floors, frames 106-119 found set up and buckled in way of bottom damage. Crop and renew approximately 3' wide and 1' 6" high, 1/2" thick plate at each of the 15 locations.
See photograph #2 and sketch #2&3 attached.
3. Longitudinal Girder - (Girder 2660 I.P. off CL - Fr. 105 to 107)
a. Approximately 3' 4" section of longitudinal girder found set up and buckled in way of bottom damage. Girder extends from the aft outboard boundary of the sludge tank, aft to the bulkhead at frame 105. Crop and renew 3' 4" long x 1' 6" high, 1/2" thick longitudinal girder plate as per original.
See photograph #3 and sketch #4 attached.
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4. Bottom Plate - (Frame 119.5 - 105) a. Bottom plate found set-up approximately 1" to 3" over an area approximately 25' long and 3'6" to 4'0" wide within the #1 fuel oil tank, however, the bottom damage appears to extend aft of frame 105 into the seabay(s). Extent of damage in the seabays is unknown and is to be fully assessed and dealt with accordingly once the vessel is dry-docked.
Contractor to allow for crop and renewal of 25' x 4' section of bottom plate with the forward extent being the existing weld seam located at frame 119.5 and extending 3" aft of bulkhead at frame 105. Utilize existing weld seams where possible.
Original bottom plate thickness is 20mm (25/32") and 25mm (1") Lloyd's Grade E. See attached Shell Expansion drawing for more details.
See sketch #5 attached.
Sludge Tank Port (Located inside FO #1 port)
5. Bottom Plate - (Frame 107 - 110) a. Bottom plate found set-up approximately 1" to 2" over entire tank. Area is approximately 5'0" long and 8'3" wide. Crop and renew all bottom plate of tank with extent of renewal being minimum 3" beyond boundary of space. Utilize existing weld seams/butts where possible.
Original bottom plate thickness is 20mm (25/32") Lloyd's Grade E. See attached Shell Expansion drawing for more details.
See sketch #5 attached.
6. Transverse Plate Floors Fr's 108-109 a. Transverse plate floors, frames 108-109 found set up and buckled in way of bottom damage. Crop and renew approximately 4' wide and 1' 6" high, 1/2" thick plate at each of the 2 locations.
See photograph #4 and sketch #6 attached.
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7.0 GENERAL NOTES
1. Repairer to remove linings, equipment, deck coverings, etc. as required to complete repair and conduct hot work. All disturbed items to be reinstated.
2. Repairer to supply fire watch during hot work with appropriate class portable fire extinguisher and charged fire hose ready for use.
3. The repairer is to provide all services necessary to complete the subject repair. These include, but are not limited to strip out, craneage, staging, cleaning, debris removal, water, shore power, etc.
4. All work to be completed to the satisfaction of the Owner's representative and Transport Canada Marine Safety inspector.
5. All hot work to be carried out under vessel work permit system. Welding to be executed in accordance with CSA W59 and CSA W47.1. Welding procedures to be developed by the contractor and supplied to TCMS upon request. All welders to have proper CWB certification for work being completed.
6. All welding is to be 100% visually inspected. NDT is to be either 100% x-ray or UT on all full penetration welds on primary structure members (side/bottom shell and floors). The NDT personnel are to be CGSB, Level II or greater for the technique being used. NDT to be completed using Lloyd's evaluation standards.
7. All tanks in way of new and disturbed steel work to be hydrostatically or air tested under witness of TCMS inspector. Testing method to be as agreed between contractor and TCMS inspector.
8. All internal structure to be Lloyd's Grade A or equivalent, all shell/bottom plate to be as stated on the shell expansion drawing supplied, i.e. Lloyd's Grade E. Steel to be supplied by the contractor and is to have mill certs showing its grade details, this is to be submitted to TCMS for review prior to commencement of work. Steel to be shot blasted and weldable primer applied prior to fabrication. Welded seams to be cleaned and primer applied. Primer/paint to be as per Coast Guard paint scheme.
9. All plate sizes and scantlings to be confirmed by the repairer at time of renewal and replaced as original as a minimum. Contractor to utilize existing seams/butts when completing plate renewals in accordance with good shipbuilding practices. Where no butts/seams are present, corners to have a minimum of 100mm radius. All proposed bottom shell plate cut seams/butts are to be reviewed on site by the attending TCMS Inspector prior to cutting.
10. Contractor to provide permit to enter an enclosed space where required. Entry permit and certification for hot work to be issued by qualified personnel.
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11. After completion of repairs, all debris is to be removed ashore and disposed of by the repairer.
12. Repairer to supply any necessary expertise for completion of the above mentioned items.
8.0 QUOTATION
Contractor to quote the foregoing scope of work with standard tariffs to be included for additional work required.
Should you require additional information, please do not hesitate to contact the undersigned.
______Deon Dyke, PTech Poseidon Marine Consultant Ltd.
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9.0 APPENDIX A - PHOTOGRAPHS
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Photo 1 - Typical damage of longitudinal girder. View looking outboard at intersection of longitudinal girder and transverse floor plate at frame 117.
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Photo 2 - Typical damage of transverse floors. View looking aft at frame 111.
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Photo 3 - Typical damage of longitudinal girder. View looking aft.
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Photo 4 - Typical damage of transverse floors in sludge tank. View looking at frame 108.
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10.0 APPENDIX B - REFERENCE SKETCHES
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7' 6"
1' 6"
Reference Sketch #1 - Longitudinal Girder, typical view of area to be cropped and renewed
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1' 6"
3' 0"
Reference Sketch #2 - Transverse floor, typical view of area to be cropped and renewed
1' 6"
3' 0"
Reference Sketch #3 - Transverse floor, view of area to be cropped and renewed when transverse floor spans the longitudinal girder.
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1' 6"
3' 4"
Reference Sketch #4 - Longitudinal Girder, typical view of area to be cropped and renewed
~4' 0" Utilize Existing Weld Seam/Butts ~3' 6"
~25'
Utilize Existing Weld Seam 5'
8' 3"
Reference Sketch #5 - Sketch illustrates approximate area of bottom plate to be renewed.
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1' 6"
4' 0"
Reference Sketch #6 - Transverse floor, typical view of area to be cropped and renewed
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Reference Sketch #7 - Shell Expansion drawing in way of renewal area. Red arrows indicate boundary of #1 Fuel Oil Tank.
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11.0 APPENDIX C - VESSEL DRAWINGS
- General Arrangement - Tank Capacity - Shell Expansion
NOTE: supplied as separate documents due to file size
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