Pre-Bid_RFI_W912L6-17-B-0001_Log_04-27-17.xlsx
XLSX spreadsheet 13 KB Posted
- Attached to
- Chiller and Installation Building 316
- Solicitation number
- ChillerBuilding316
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RFI Answers
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Other files
| File | Type | Posted |
|---|---|---|
| Pre-Bid_RFI_W912L6-17-B-0001_Log_05-11-2017.pdf | ||
| 17-B-0001-0002_Clause_52.228-1.pdf | ||
| Pre-Bid_RFI_W912L6-17-B-0001_Log_04-27-17.pdf | ||
| Solicitation_Modification_W912L6-17-B-0001-0001.pdf | ||
| STATEMENT_OF_WORK-21_Feb_2017_Bldg316_Chiller.doc | DOC document | |
| ChillerPics.pdf | ||
| Pre-Bid_RFI_W912L6-17-B-0001_Log_04-27-17.xlsx | XLSX spreadsheet | |
| Pre-Bid_RFI_W912L6-17-B-0001_Log_04-27-17.xlsx | XLSX spreadsheet | |
| Site_Visit_Sign_In.pdf | ||
| Solicitation_W912L6-17-B-0001.pdf |
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Sheet1 Pre-Bid RFI Log for W912L6-17-B-0001 Bldg 316 Chiller, XHZG201501230
| Date: | RFI No. | RFP Reference (Sect/Para/Page) | QUESTION | GOVERNMENT RESPONSE |
| 4/27/17 | 1 | N/A | Does the chilled water system have glycol in it? If so, what type of glycol and how much percentage does it have? | Yes, the chilled water system has propylene glycol in it. It is a 30%, protected to 0° mixture, but has been diluted. |
4/27/17 2 N/A Are the chilled water pumps able to handle the capacity for this type of Carrier chiller model, 30RAP1156D-06314?
| Unknown if pumps can handle new chiller. Current pumps installed: Aurora centrifugal, No. 04-1069291, Type 341A BF, Size 2.5x3x9, GPM 207, Head feet 70, RPM 1750 / Motor: HP 7.5, RPM1750, 208-230/460 volt 3ph, Enclosed DP, Frame 213JM | ||||
| 4/27/17 | 3 | N/A | Who is the chemical treatment company that your base uses? | Brainerd Chemical, but we can use anyone. |
| 4/27/17 | 4 | N/A | Is the chilled water system chemical treatment maintained? | Yes, the chilled water system chemical treatment is maintained. |
| 4/27/17 | 5 | N/A | Are there any plans for your system that can be shared with us? | Plans for the system that can be shared - Not Available |
| 4/27/17 | 6 | N/A | Can I come and walk the site at a select scheduled time? | Please contact me at 918-833-7118 and we will arrange a site visit. |
| 4/27/17 | 7 | N/A | If I cannot come and walk the site, may we have a couple of photos of the chiller and associated piping from the pumps to the chiller? | |
| We will arrange a site visit but if you still need the photos we will work with our internal customer to arrange photos. |
| 5/1/17 | 8 | N/A | Will the water need to be tested and the system balanced for the new pumps and the chiller? | YES |
| 5/1/17 | 9 | N/A | The chiller speccification in the SOW states two 5-hp pumps housed within the chiller and to demo the existing pumps (closed loop). Chiller Pumps are usually not contained within the chiller itself. We are wanting to confirm with the manufacturer if this is feasible. Replacing the pumps and installing the new pumps in its original place would be a significant cost savings. | ORIGINAL PUMPS, CONROLS, AND ALL PIPING TO BE REPLACED FROM CHILLER TO AHU #1 (NOTE: PUMP SIZE IS 7.5HP, NOT 5HP and Statement of Work will be updated) |
| 5/1/17 | 10 | N/A | Please specifiy if triple duty valves, isolators, or butterfly valves are preferred? | BUTTERFLY VALVES |
| 5/1/17 | 11 | N/A | On the outside area of the chilled water lines how far back do you want replaced and if new shut of valves are in order. Will it be replace what is outside flange to flange? If so on theses matters please specify what type and size | ALL PIPING TO BE REPLACED FOR CHILLED WATER SYSTEM FROM CHILLER TO AHU #1 LOCATED IN MECH ROOM |
| 5/1/17 | 12 | N/A | As the manufacturer, Carrier may require they be hired to install the controls and perform the start up. Or is the base controls contractor to be used? Please provide contact information | MANUFACTURER REQUIRED TO PERFORM STARTUP AND CONTRACTOR REQUIRED TO INSTALL CONTROLS |
| 5/1/17 | 13 | N/A | What gpm is requred for the new pumps? Will taco pumps be acceptable? Start-ups will need to be performed for the pumps, but not spceified in the SOW.Can you advise how much of the waterlines are to be replaced? No lineal footage needed, but are we only replacing lines from the chiller to the pumps? | PUMPS ARE SIZED AT 7.5HP FOR ONBOARD PUMP KIT FROM CARRIER |
| 5/1/17 | 14 | N/A | Are the existing lines to be flushed and cleaned? | ALL LINES TO BE REPLACED FROM CHILLER TO AHU #1 LOCATED IN MECH ROOM |
| 5/1/17 | 15 | N/A | Is water treatment to be included? | CONTRACTOR TO PROVIDE |
| 5/1/17 | 16 | N/A | Are the existing lines heat traced? | YES, BUT ALL NEW LINES OUTSIDE BUILDING TO HAVE HEAT TRACE |
| 5/1/17 | 17 | N/A | Is the new chiller barrel to be heat traced? | YES, FROM FACTORY INSTALL |
| 5/1/17 | 18 | N/A | Are the control drives and motor starts a part of the chiller or are bidders to purchase the controls for the pumps separately? | INCLUDED WITH PUMP KIT FROM CARRIER CHILLER CONTROLS PUMPS |
| 5/1/17 | 19 | N/A | Is there glycol in the existing system? If so what type and water percentage. | See Answer to Question #1 |
| 5/1/17 | 20 | N/A | Can you advise how much of the waterlines are to be replaced? No lineal footage needed, but are we only replacing lines from the chiller to the pumps? | ALL CHILLED WATER LINES ARE BEING REPLACED AND OLD PUMP REMOVED |
File details come from the government source that posted it. Updated .