RFI- Chiller Project Questions.pdf
PDF 78 KB Posted
- Attached to
- MDC BROOKLYN- OVERHAUL CHILLER PUMPS
- Solicitation number
- 15BBR021Q00000008
About this file
This document contains a request for information and a related federal contract opportunity notice. The request for information regards a chiller project at the Metropolitan Detention Center and includes questions about draining and pressure testing the existing chiller system, pipe welding requirements, control components, piping schematics, pump sequences of operation, and approval processes. The related federal contract opportunity is to overhaul chiller pumps at the Metropolitan Detention Center Brooklyn. The contractor will be required to add additional piping and isolation valves to cross connect three absorption chillers to chilled water pump two and condenser water pump two. The contractor must provide all necessary equipment, labor, materials, and incidentals according to manufacturers' recommendations and industry standards. Site visits are scheduled for March 22nd and completed NCIC forms are due by March 17th. Acceptable forms of payment protection for the contract value of $35,000 to $150,000 are identified as a payment bond, irrevocable letter of credit, tripartite escrow agreement, certificates of deposit, or specified security deposits.
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Other files
| File | Type | Posted |
|---|---|---|
| INSTRUCTIONS OVERHAUL CHILLER PUMPS.doc | DOC document | |
| wage determination construction.pdf | ||
| sf 1442 CHILLER.pdf | ||
| NCIC form.pdf | ||
| Approved SOW_1_3.pdf |
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Text version
RFI #1 80 29th Street MDC (Metropolitan Detention Center)
Date: Mon Mar 29, 2021 at 12:10 pm EST
Question: Please advise the following:
1. Who will be draining out the Chiller system? The system will be drained by the Bureau of Prisons.
2. What is the existing water pressure for Chiller system? Condenser Water suction is 75-60psi.
Condenser water discharge is 110-120psi. Chilled water suction is 65-75psi. Chilled water discharge is 90-100psi.
3. Please advise on method of pipe welding; double pass or triple pass? Triple pass welding will be required
4. Do we need to provide submittal data for control or manual bypass valve? Yes
5. Please advise if you need BMS control or manual bypass valve? Manual bypass valve will be used
6. Please provide piping schematic for scope of work? Drawing M—19 will be provided as an attachment
7. Please provide sequence of operation for existing Chiller pumps? Each chiller has its own set of pumps, the goal of this project is to use #2 pumps to be able to switch to chiller 1 or chiller3.
8. Please provide shop drawing for existing piping for Chiller pumps? Drawing M—19 will be provided as an attachment
9. What is the sequence of operation once the job is completed? Once the job is completed the contractor will notify the Bureau of Prisons and the cooling tower will be filled while the contractor is onsite to ensure there is no leaks.
10. Do we need to provide sketch or shop drawing for approval before the actual work be proceed? The contractor does not have to submit drawing before but is required to submit as-builts for this work.
11. Do we need Engineer approval for design-built application? No, the work must meet all industry standards and codes standards for Federal, State and
NYC.
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