Chennai Metro Rail Limited Tender ARE-03 Response to Bidders Pre-Bid Queries
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Chennai Metro Rail Limited Tender ARE-03 Response to Bidders Pre-Bid Queries Pre-bid queries for Tender No. CMRL/PHASE -II/SYS/ARE03/2020 Design, Manufacture, Supply, Testing, Commissioning of Standard Gauge Metro Rolling Stock (Electrical Multiple units) and Training of Personnel Name of the Bidder : ABB India Ltd. Clause Addendum Sl.No. Part/ Section No. Original Bid condition Bidder's Query CMRL Response No. (Y/N) PART- 2, SECTION VI - EMPLOYER’S Traction inverters shall be housed in a stainless container, which REQUIREMENTS is mounted under floor in each of the motorized cars. The Please clarify if bidder can use alternate mateiral , TECHNICAL container shall house the power electronics, the monitoring viz , Magnelis ( Arcelor Mittal) or PosMAC( Tender condition 1 10.11.8 N SPECIFICATION devices and the traction control unit. It is connected to the POSCO) type steel alloy material for enclosures. prevails. vehicle via high voltage power connections, control connections Other than Stainless steel / Aluminum usually used . Section 10 – HV and and 3-phase output to the traction motors. Propulsion System PART- 2, SECTION VI - Electrical low volatge switchgear components like EMPLOYER’S Power contactors, Auxiliary contactors/ relays, Fire properties of the materials used shall comply with EN REQUIREMENTS MPCB-Motor protection circuit breaker , Electronic 45545 part 1 to part 7 latest editions (Category 4-A, Hazard level TECHNICAL protection relays, MCB, RCCB,RCBO etc shall be Tender condition 2 2.2.30 HL3) as a minimum or better international standard applicable N SPECIFICATION in complaince with international railway rolling prevails. for similar Metro applications. Requirements of ERTS section stock standrads EN-45545-2 , Protection aginast 2.26 shall be met. Section 2.2 – General Fire & smoke with Category 4-A, Hazadous level Requirements HL-3. PART- 2, SECTION VI - Electrical low volatge switchgear components like EMPLOYER’S Power contactors, Auxiliary contactors/ relays, REQUIREMENTS Where acceptable results from prior testing are not available for MPCB-Motor protection circuit breaker , Electronic TECHNICAL Tender condition 3 2.13.1.8 any item of equipment, tests shall be performed in accordance protection relays, MCB, RCCB,RCBO etc shall be N SPECIFICATION prevails. with IEC 61373 or EN 12663. in complaince with international railway rolling stock standrads IEC -61373, Protection against Section 2.13 – Shock & Shock and Vibration Vibration Page 1 of 88 Chennai Metro Rail Limited Tender ARE-03 Response to Bidders Pre-Bid Queries Name of the Bidder : Alstom – Lot 1 Part/ Section Clause Addendum Sl.No. Original Bid condition Bidder's Query CMRL Response No. No. (Y/N) Ethernet-based Train Backbone with redundant Train Ethernet-based Train Backbone with redundant Backbone Nodes (TBNs) (at least two in each consist of Train Backbone Nodes (TBNs) is not applicable as Please refer to Addendum 1 Part 2 ERTS 14.2.2 network) shall be provided to achieve interoperability CMRL doesn’t intend to run the train in multiple Y for revised clause. between consists when coupled in the train as per IEC unit operation during normal revenue service 61375-2-5 Bidder request to delete this clause Ethernet-based Train Backbone with redundant Train Backbone Nodes (TBNs) is not applicable as CMRL doesn’t intend to run the train in multiple Ethernet Consist Network with dual-homing ladder-type unit operation during normal revenue service topology or latest better technology (compliant with IEC Bidder request to modify this clause as below Please refer to Addendum 2 Part 2 ERTS 14.2.3 Y 61375-3-4) shall be adopted. The ECN shall maintain Ethernet Consist Network with dual-homing ladder- for revised clause. redundant communication links to the ETB. type topology or latest better technology (compliant with IEC 61375-3-4) shall be adopted. The ECN shall maintain redundant communication links to the ETB. Bidder recommends TCMS with ring type topology network architecture to meet reliability targets and system availability. And all safety Dual-Homing End Devices (ED) critical digital and analog IOs interfacing with TCMS (directly or via an interface unit) shall also be fully redundant. Bidder requests to modify the clause: Please refer to Addendum 3 Part 2 ERTS 14.2.4 Y All the End Devices shall support dual-homing type for revised clause. All the End Devices shall support dual-homing type Ethernet connections to ECN via physically Ethernet connections to ECN via physically independent independent ports to increase system reliability and ports to increase system reliability and availability. All availability. digital and analog I/O’s interfacing with TCMS (directly or via an interface unit) shall also be fully redundant. All safety critical digital and analog IOs interfacing with TCMS (directly or via an interface unit) shall also be fully redundant.” TCMS shall be minimum of SIL2 compliant for all vital and safety related control and monitoring functions Bidder requests to modify the clause as below: “The including but not limited to the following hardware, contractor shall maximize the use of TCMS software software and control functions- at all levels including but for safety related functions up to SIL2 and justify not limited to hardware, software and control functionality whenever some SIL2 (or less) safety 4 Part 2 ERTS 14.1.5 etc. Any change in SIL level shall be subject to the hazard related functions cannot be implemented. SIL Tender condition prevails. N analysis and acceptance by CMRL, whose decision shall allocation to functions shall be the result of the be final and binding SIL compliance for the below hazard analyses of the Contractor, performed during functions shall be submitted for review and approval of the design stage.” CMRL [CDRL 14-3] Page 2 of 88 Chennai Metro Rail Limited Tender ARE-03 Response to Bidders Pre-Bid Queries Name of the Bidder : Alstom – Lot 1 Part/ Section Clause Addendum Sl.No. Original Bid condition Bidder's Query CMRL Response No. No. (Y/N) a) Vehicle Automatic Train Control operation mode (ATP, ATO, UTO etc.), b) Door Proving loop cut-out, c) PWM transmission (communication), d) PWM signal (Hardware) failure, e) Door Open Push Button, f) Direction control of train operation, g) Holding brake release, h) Speed transmission, i) Fire alarm transmission Part 2 ERTS j) ED (Electro Dynamic) brake cut-out signal transmission, k) Actual ED brake effort signal transmission l) Wheel Sliding signal transmission to Signalling, Brakes and Traction systems, m) ED brake effective signal transmission, n) Holding Brake demand signal transmission, o) Holding Brake applied status transmission; p) Deadman function q) Wheel Slip signal transmission to Signalling, Brakes and Traction systems, r) Real time remote transmission of train data as defined in RTR-DMS of ERTS Section 14.11 & 14.13. The Contractor shall provide means to record usage of actual utilized energy of train with an accuracy of ±5% for motoring and regeneration As both the clauses are contradicting, Bidder 14.12.3 & Accuracy: All energy measurements shall have accuracy Please refer to Addendum 5 Part 2 ERTS understands & propose Energy measurement with Y 10.17.1 within ±3% of the measurements made with Standard for revised clause. accuracy of ±5%. Please confirm. Wattmeter and Standard Instrument Transformers connected at appropriate test point in the Vehicle Control Circuit. This shall be validated during type tests. Bidder request to allow screen transition time DDU Response Time approximately 2 seconds, Bidder request to modify clause as below The response time for most complex DDU screen change The response time for most complex DDU screen from one TCMS screen to other TCMS screen, TCMS to change from one TCMS screen to other TCMS 6 Part 2 ERTS 14.5.9 Tender condition prevails. N CCTV screens, maneuvering from one camera image to screen, TCMS to CCTV screens, maneuvering from other under full DDU loading shall be approximately 0.5 one camera image to other under full DDU loading seconds. Contactor shall submit compliance details during shall be approximately 2 seconds. Contactor shall design stage which shall be got validated during line test submit compliance details during design stage which shall be got validated during line test Page 3 of 88 Chennai Metro Rail Limited Tender ARE-03 Response to Bidders Pre-Bid Queries Name of the Bidder : Alstom – Lot 1 Part/ Section Clause Addendum Sl.No. Original Bid condition Bidder's Query CMRL Response No. No. (Y/N) Based on operational requirement, rakes may have to be operated in GoA2 mode with driver / in GoA3 mode with Bidder understand that DMC car layout shall be as 7 Part 2 ERTS 1.4.3 attendant / in GoA4 (UTO). However, the Phase 2 project YES. N per GoA4 requirement, Please Confirm. is planned with operations in UTO (GoA4) from the initial passenger service inauguration itself. Bidder request to modify the clause allowing other All piping shall be of stainless steel conforming to the solution as well requirements of ISO 9329-4 and ISO 9330-6 or equivalent All piping shall be of stainless-steel conforming to Please refer to Addendum 8 Part 2 ERTS 12.3.2 with flared compression fittings. The pipe fittings shall the requirements of ISO 9329-4 and ISO 9330-6 or Y for revised clause. conform to the requirements of DIN 2353 or approved equivalent with flared or flare less double equal. compression fittings. The pipe fittings shall conform to the requirements of DIN 2353 or approved equal. The Sperling ride index of the rake at 80 km/h shall not Please note that both the clauses are contradicting exceed 2.50 in both vertical and horizontal directions in 11.4.13.2 for Ride Index in Normal condition with New inflated condition of secondary suspension and 3.0 in Wheel.