B2021 RFI_Answers 2.pdf
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- Attached to
- Replace Radar Generator, B2021
- Solicitation number
- FA302226R0006
About this file
This is a Questions and Answers (Q&A) document for a federal contract opportunity designated B2021, addressing an RFI (Request for Information) regarding a generator installation project at Columbus AFB.
Key staffing and planning requirements clarify that the superintendent and QAQC roles must be fulfilled by separate individuals, while QA/QC and Safety Plans do not need to be project-specific. Regarding the technical scope, the contractor is responsible for field-verifying all existing load information and conditions. The project intent is to match the size of the existing Kohler generator; contractors may propose alternates during design but should plan on matching the existing generator size. The contractor must furnish and install new conductors between the generator, automatic transfer switch (ATS), load, and load bank, though existing underground conduits may be reused. All existing phase and neutral conductors are to be replaced with new installations. Grounding electrodes may be reused provided they meet required resistivity specifications per the SOW, and the contractor is responsible for disposing of the old fuel tank. Record electrical drawings, CAD files of the generator shed and site area, metering data in kWh per month, and existing as-built drawings for mechanical, electrical, civil, structural, and architectural systems are available to contractors. The existing annunciator panel PLC information will be retained, with the new generator wired into the existing system by the contractor. A limited, coordinated weekend outage may occur to transition the system to dual backup generation. While a sole-source Justification and Approval (J&A) exists for Cummins generators at Columbus AFB, matching the capabilities of the existing generator specifications is more important than the manufacturer designation.
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B2021 RFI’s
1. In executing this project, can one superintendent fulfill the supervision, safety, and QAQC roles?
Superintendent and QAQC must be to separate individuals.
2. Are contractors required to issue a contract specific QA/QC Plan?
Plan doesn’t have to be project specific.
3. Are contractors required to issue a contract specific Safety Plan?
Plan doesn’t have to be project specific.
4. Is this project tax exempt?
Cons to answer.
5. Paragraph 4.5.15 indicated record drawings are attached, but none were attached to the SOW. Are there any record electrical drawings available, including one-line diagrams and plan views?
Record drawings attached.
6. Are there any CAD files available of the generator shed and immediate site area?
Available drawings attached.
7. Is there any metering data available?
Metering data attached in kWh per month.
8. Is there a list of connected loads available to determine the peak loading of the generator?
The intent is to match the size of the existing Kohler generator. The existing information on the generator and loads are attached. The contractor is responsible to field verify existing conditions, and may propose an alternate during design, however they should plan on matching existing size.
9. May the existing phase and neutral conductors be re-used as feasible?
The contractor shall furnish and install new conductor between the generator/ats/load/load bank.
10. How much down time can be tolerated for a single source of power to the load?
At what outage duration will redundant power sources be required?
A limited and coordinated weekend outage may occur to move the system onto the duel backup generation for the performance of work.
11. Are existing as-built drawings available for generator installation: Mechanical, Electrical, Civil, Structural, Architectural?
Available existing drawings attached.
12. Are as-built one line diagrams which identify all of the relevant loads needed for the generator load study or will contractor need to perform a field survey to find the information?
The contractor shall field verify all load information, the attached as-builts are all existing available information.
13. Statement of Work mentions replacing existing grounding conductors. It is assumed underground ground grid will remain in place and be reused. Please confirm.
The grounding electrodes may be reused as long as they meet required resistivity per the SOW.
14. Will contractor dispose of old fuel tank or will owner keep?
The contractor shall dispose of the old fuel tank.
15. Will existing conductors between electrical equipment (generator, transfer switch, load bank, meter, etc) be reused or replaced?
The contractor shall furnish and install new conductor between the generator/ats/load/load bank.
16. Is there an existing Annunciator Panel on this project and does it need to be replaced?
Existing annunciator panel PLC information attached, the new generator shall be wired into existing system by contractor.
17. Is Cummins Gen Equipment the only one acceptable or will others be considered as long as they meet the spec?
The sole source J&A is for Cummins generators at Columbus AFB. It is more important to match the capabilities of the existing generator specs attached.
18. Is underground cabling/Conduits Required to be replaced or can conduits be reused?
Conduits may be reused.
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