RFI.pdf
PDF 287 KB Posted
- Attached to
- Chiller Replacement
- Solicitation number
- W50S6Q21B0004
- Issued by
-
Department of the Army National Guard
About this file
This document contains a request for information and related federal contract opportunity notice. The request for information seeks pricing and technical information from contractors regarding the replacement of two 275-ton air-cooled chillers at an Arkansas Air National Guard facility, including estimated piping lengths, glycol types and percentages, drawings, storage areas, and controls incumbent. The subsequent federal contract opportunity is a 100% small business set-aside between $250,000 to $500,000 to award a firm fixed-price contract for the chiller replacement services. The pre-bid date is July 14, 2021 and bids are due by August 17, 2021 to replace the chillers within 120 days of notice to proceed. The North American Industry Classification code is 238220 and contractors must perform at least 15% of the work with their own employees.
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Other files
| File | Type | Posted |
|---|---|---|
| OF 1419A Continuation Sheet CHILLERS.pdf | ||
| OF 1419 Abstract of Offers CHILLERS.pdf | ||
| RFI (2).pdf | ||
| W50S6Q21B0004 AMENDMENT 0002.pdf | ||
| W50S6Q21B0004 AMENDMENT 0001.pdf | ||
| site visit attendance sheet.pdf | ||
| W50S6Q21B0004.pdf |
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Text version
RFI’s
1. 6" pipe, we need to know the estimated length of the pipe? If the contractor provides the same chiller it should bolt back up to the existing pipe without a need for additional piping. If the contractor chooses to use an approved equal the contractor will have to account for what they would need to provide a clean connection to the existing piping.
2. Propylene or Ethylene glycol, ethylene is usually more cost effective. Propylene Glycol
3. Does a permanent glycol feeder/makeup tank need to be included? Yes. Include a permanent glycol feeder/makeup tank in the proposal.
4. Is there a sanitary drain system near by to evacuate the fluids out of the current chiller?
No
5. Once the existing chiller has been removed, who is responsible for the existing chiller?
The Contractor that removed it.
6. 30% glycol was mentioned during the site visit. Is the 30% glycol for the entire system or just for the chiller? 30% by volume addition of glycol is for the entire system. The system has a total of approximately 1030 gallons. Contractor will add approximately 310 gallons.
7. Will there be any drawings for this project? This could be for the existing/new chiller, project location for estimation purposes, and/or piping and electrical layout. Yes. See
Attachments (Existing Chiller Specs and Design Specs) and Attachment Chiller Pictures and Drawings v2.
8. Will there be a location to store equipment and material/parts? Yes, contractor will be able to store equipment and material/parts onsite outside. As needed contractor may be able to coordinate for conditioned storage for short periods of time as needed.
9. Will there be a location for storing a dumpster? Yes, contractor can coordinate with COR for a dumpster location near the work site.
10. What is the amount of the bid guarantee percentage or a set amount (whichever is less)?
Please refer to the solicitation.
11. Does the Government have a manufacturer preference on chiller? (Trane, Carrier, York, etc.) No. Preference is based on matching the required specifications, ensuring proper clean connection, and providing the chillers within the specified timeline ensuring the project is completed within the period of performance.
12. Lead times on new chillers can be 6-20 weeks. will long lead times be problematic? Do we need to focus on short lead time regardless of manufacturer? All work must be completed within the specified period of performance. Preference is both meeting the specification AND replacing the chillers as soon as possible.
13. Is there a Glycol preference, Ethylene or Propylene? Propylene
14. 30% glycol, is the 1030 gallon capacity the actual chilled water loop capacity? Yes. The amount of glycol needed would be roughly 310 gallons.
15. Is flushing the chilled water loop required? Only as much as needed to provide 310 gallons of propylene glycol. System is currently a clean water system.
16. Who is the current BMS Controls company? Powers provides the base its DDC controls.
File details come from the government source that posted it. Updated .