RFIs- Backflow Preventors - 11Sep26.xlsx
XLSX spreadsheet 19 KB Posted
- Attached to
- Backflow Preventer Upgrades
- Solicitation number
- W50S7X-26-Q-0010
- Issued by
-
Department of the Army National Guard
About this file
This file is a Request for Information (RFI) with Questions and Answers related to Solicitation W50S7X-26-Q-0010 for Backflow Preventer Upgrades at McConnell Air Force Base, Kansas. The RFI addresses nine questions submitted by potential contractors and provides clarifications from the Kansas Air National Guard regarding the scope of work, existing equipment specifications, site inspection requirements, and technical specifications for backflow preventer replacements.
The revised scope of work encompasses four backflow preventer replacements: Building 44 Room 118 (1" Watts 909 RPZ, Serial 548898) for boiler makeup water; Building 5 (1.5" Watts 009M2 QT RP, Serial 140892) for domestic water; Building 56 (1" Watts 009M2 QT RP, Serial 277591) for domestic water; and Building 48 Fire Riser Room (4" Colt 200 DC, Serial EL-0865) for fire suppression. Building 33 and the second Building 44 device were removed from the revised scope. The government clarified that contractors may submit code-compliant, like-for-like equivalent replacements without specific model or manufacturer requirements, and that contractors requesting to unwire and rewire alarm tamper switches must provide 24-hour notice. The government indicated that contractors are welcome to conduct supplemental site inspections of Buildings 5 and 56, though photographs were provided as sufficient documentation to meet inspection requirements under the Statement of Work.
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Text version
Sheet1
| Question | Response | ||
| 1 | The scope identifies the following: | ||
| • | Buildings 33 and 44, Room 122: Double Check Valve (DCV) | ||
| • | Building 44, Room 118, boiler makeup: Presumed Reduced Pressure Zone (RP) assemblyPlease provide the manufacturer, model, and serial number for each device scheduled for replacement, including the devices located in Buildings 48 and 65. | BLDG 33 South Bay, Fire Suppression |
6” Maxim 200 DC JC-0416
BLDG 44 Room 118 (East Mech Room), Boiler Makeup 1” Watts 909 RPZ 548898
BLDG 44 Room 122 (South Mech Room), Fire Suppression 4” Colt 200 DC EC-0652
BLDG 48 Fire Riser Room, Fire Suppression 4” Colt 200 DC EL-0865
BLDG 65 South Mech Room, Domestic Main 2-1/2” Wilkins 350 DC J22384
| 2 | At the walk through some backflows valves have alarm tamper switches. Is it the intenet of the governement to unwire them and wire the new ones once completed. | We will unwire and rewire these switches when needed. We do ask for a 24 hour notice for each occasion. |
| 3 | Please confirm whether the 1.5-inch backflow preventer at Building 5 is an RPZ or double-check valve. Could you also provide photos of the existing backflows at Buildings 5 and 56? | Building 5: Watts 1-1/2” 009M2 QT RP 140892 |
Building 56: Watts 1” 009M2 QT RP 277591
| 4 | SW 9 of the revised SOW requires the contractor to acknowledge that it has inspected and is fully cognizant of the site conditions. Since the August 12 site-visit materials do not appear to reflect Buildings 5 and 56, please confirm whether the prior organized site visit satisfies this requirement for the revised scope or whether a supplemental inspection/access opportunity is required or available. | The contractor is welcome to make a return visit to examine Buildings 5 and 56 but we are not requiring it as pics of these two devices are included in the posting |
| 5 | confirm whether a properly sized, code-compliant like-for-like/equivalent replacement meeting the revised SOW requirements is acceptable for each location. | We are not calling out a specific model or manufacturer. Please meet all requirements specified in the SOW |
| 6 | It appears Building 33 has been removed from the written scope of work for the Backflow Preventer upgrades but a photo is still included. Is this still in the scope of work? | No, This was removed and no longer needed |
| 7 | In the scope of work and pictures, it indicates Building 5 is a wash rack, but the written scope of work this is for Fire Prevention. Please clarify if this is for Fire Prevention, Dual Check Valve requried, or if this is for Domestic Water, RPZ Backflow required. | This is for domestic water. |
| 8 | In the scope of work and pictures, it indicates Building 56 is a makeup assembly, but the written scope of work this is for Fire Prevention. Please clarify if this is for Fire Prevention, Dual Check Valve requried, or if this is for Domestic Water, RPZ Backflow required. | This is for domestic water also |
| 9 | The pictures show (2) Backflow Devices for Building 44. One Device for Boiler Makeup Water, and One Device for Fire Suppression. The written scope of work indicates only One BFP to be replaced | This should only pertain to the one in Room 118 Boiler Makeup Backflow. There was a second one but that was removed when they re-wrote the SOW. |
File details come from the government source that posted it. Updated .