RFQ 455740 Q_A.pdf
PDF 85 KB Posted
- Solicitation number
- 455740
- Issued by
-
Department of Energy Office of Science
About this file
This is a Questions and Answers (Q&A) document for RFQ 455740 related to HVAC and power equipment rental at Brookhaven National Laboratory (BNL). The document clarifies that the generators, AC units, and chiller will operate 24/7 on triple shifts.
The Q&A provides specific technical requirements including: 25 feet of power conductors needed for each AC unit and chiller connection to generators, 50 linear feet of flexible ducting required for each AC unit (both supply and return), and 50 feet of supply and return hoses for the chiller. BNL labor will handle electrical connections between generators and AC units/chiller, as well as mechanical connections to building ductwork. The chiller system will utilize standard chillwater application with maximum pressure of 60 psi, and connections will be made using camlok fittings with adaptors available if needed. The document also clarifies that vendors can specify additional one-time costs not covered in the existing categories of the pricing schedule.
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Text version
RFQ 455740
Q&A
1. What is the anticipated run time of these units per day?
a. Single shift - 8 hours, Double Shift - up to 16 hours or Triple shift - unlimited.
We plan on running the generators 24/7 (triple shift)
2. On the pricing schedule it requests rates for Power Conductors, Temp. Ducting and other one-time costs.
b. Are Power Conductors - Power Cable from the Generator to the A/C or Chiller? If so how many feet per unit are required?
We require sufficient conductors so each AC unit and chiller to be powered by respective generators. 25’ of conductors should be adequate
a. How much Temp. Ducting in feet is required for each A/C or Chiller unit to project.
The AC units will be parked 30 feet from the buildings. 50 linear feet of flexible ducting is required for each AC unit (for supply and return connections).
The chiller will also require 50’ of supply and return hoses.
c. Please explain what are other one-time cost?
This box was added so companies can let us know if there are any other one-time costs that do not fall in the categories mentioned that we did not consider. This is up to a company to let us know if they have any other costs associated here that are applicable. A one-time cost is a fee or some other cost that isn’t charged on a monthly basis.
3. Will BNL be hooking up the Cable between the Genset and A/C or Chiller?
Yes. BNL labor will electrically connect the AC units to the generators, and chiller to the generator.
4. Will BNL be hooking up the Temp Ducting between A/C or Chiller and project?
Yes. BNL labor will mechanically connect the AC units to the building ductwork, and hoses to the chiller.
5. Please confirm that all equipment will run 24 hours per day.
Correct. 24 hours/day
6. Please confirm that a 50' run of cable will suffice for each generator.
50' run is adequate.
7. Will return air be utilized on the air conditioners?
Yes. Supply and return. We require ducting for both.
8. Is chiller hose needed, and what is the connection point for the supply and return?
Yes, we require the hose. We will connect by camlok fittings but we can fabricate adaptors to a variety of applications if required.
9. What is the length from the chiller to the connection points?
50'
10. What is the system pressure on the chiller system?
We will utilize a standard chillwater application. We will use a max pressure of 60 psi.
Sheet1
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