Patna Metro update: Tenders invited for simulation study for designing of ECS and TVS system for Corridor 1 & 2

In continuation to tender for Contract PC-01, the Delhi Metro Rail Corporation (DMRC) Ltd. has now invited open e-tenders for the scope: ‘Contract PEDD-02: Simulation study for designing of ECS and TVS system for underground section of Danapur – Khemni Chak (Corridor -1) and Patna Railway Station – New ISBT (Corridor -2) of Patna Metro Rail Project’.

• Tender Reference Number: PEDD-02
• Approximate cost of work: INR 73.16 Lakhs
• Tender Security: INR 01 Lakhs
• Completion period of the Work: 09 Months
• Pre-bid Meeting: 14.08.2020 at 11:00 hrs (Video Conference)
• Tender submission start date: 27.08.2020 (0900 Hrs)
• Tender submission end date: 01.09.2020 (1500 Hrs)
• Date & time of opening of Tender online: 02.09.2020 at 1500 Hrs

Scope of work:

Overview of Patna Metro Rail Project: 

• Delhi Metro Rail Corporation has been entrusted to implement the following two corridors of Patna Metro Rail Project based on deposit terms.

• The diagram showing underground stations, interchange stations, tunnel length is attached as Annexure -1 to Scope of Work. 
• Trains Comprises will be electric multiple unit (EMU). Modern rolling stock with stainless steel body and VVVF 3 phase drive with regenerative braking has been utilised. The cars are air-conditioned. 
• Underground section ‘Closed’ type tunnel ventilation system is used in UG stations. The station public areas are air-conditioned while the plant rooms are provided with supply/exhaust system. Tunnel ventilation is primarily achieved by the movement of vehicles inside the tunnel under normal working conditions. Tunnel ventilation fans installed at each end of the stations are used to provide supplementary ventilation at times of high temperatures, and under congested traffic or emergency conditions. Booster fans have been also been used on appropriate locations Under emergency conditions or in case of a tunnel fire, the tunnel ventilation system is used for smoke extraction by operating tunnel ventilation fans in push pull mode. During emergency fire condition within a station, the station air handling system is operated for smoke removal. 
•  The tunnel design shall not exceed a stratified tunnel air temperature of 50-degree C during congested and tunnel air temperature of 36 degree C during normal conditions. The design shall provide emergency mode air velocity to be adequate to meet the emergency condition but shall not exceed 11m/s. The tenable conditions as defined in latest edition of NFPA-130 shall be ensured. 

Simulation study work shall include but is not limited to following:  

• Simulation Consultant shall carry out following Simulation analysis: – 
  • Development of single line diagram (schematic) for SES/IDA analysis. 
  • Assembly of final input data and assumptions. 
  • Simulations for various normal operating scenarios. 
  • Evaluation of heat gains for station under normal operation.
  • Determination of average tunnel and platform air temperatures under normal operation. 
  • Determination peak and average platform velocities under normal operation. 
  • Pressure transient analysis. 
  • Congested analysis for all station-to-station tunnel sections. 
  • Emergency analysis of all tunnel sections. 
  • Operational mode table. 
  • Stratified temperature analysis for a train stopped in tunnel. 
  • Sensitivity analysis with one cross-passageway door open in case of emergency. 
• Simulation Consultant shall prepare the report which shall include minimum of following: 
  • Design Criteria 
  • Input 
  • Modelling Concept 
  • Simulation Scenario 
  • Output of Simulation 
  • Interpretation of results 
  • Conclusion 
• The Simulation Consultant shall also provide soft copy of the model prepared for simulation study. 
• Simulation Consultant shall be available for interactions for explanation of design basis, codes followed, reports and calculations performed using presentations, handout, etc. Consultant shall attend meetings during the design stage connected with the work whenever required. 
• The relevant calculations including soft copies of simulation results shall be submitted for the review with respective design submissions and shall incorporate changes in report/simulation modelling resulting from reviews / comments by DMRC.
• The simulation consultant shall undertake not to use information gained in execution of the contract for any purpose without obtaining prior approval of DMRC and shall not make any public announcement or divulge any material relating to the project either in India or overseas without prior written consent of DMRC. 
• Simulation studies shall be explained to DMRC engineers. The simulation consultant shall provide one week training for the design under the scope of this tender. The training can be provided either in person or through video conferencing, as mutually decided.
• The Simulation Consultant shall study and take guidance from all the available information including those made available during design e.g. DPR of Patna Metro and drawings issued or made available to it in the scope of services to carry out all necessary analysis, and request any further information or data which is necessary for its design development from the Employer’s Representative which will be provided if available. Any data, information, standards not available with the Employer shall have to be collected by the Simulation Consultant at their own cost. 

Authority for purchase of tender documents, seeking clarifications and submission of completed tender documents:

GM/E/UG-1 Ground floor, Mayur Vihar Ph-I Metro Station Mayur Vihar Ph-I ., New Delhi-110 091 email id: – snagrawal@dmrc.org rajesh.jain@dmrc.org.

Tender document can only be obtained online after registration of tenderer on the website https://eprocure.gov.in/eprocure/app.

Source: DMRC-Tender