B08_Attachment_11_Q_A_Amd_005_0005.docx

DOCX document 24 KB Posted

Attached to
CERC A3 Single Phase Electrical Panel Upgrade Federal contract opportunity
Solicitation number
140G0125Q0052
Issued by
Department of the Interior US Geological Survey Office of Acquisitions and Grants

About this file

This is a Questions & Answers (Q&A) document for Amendment 005 of solicitation 140G0125Q0052, which addresses technical specifications for an electrical upgrade project at the USGS Columbia Environmental Research Center. The Q&A provides critical details about the existing electrical infrastructure, including confirmation of a main 1200-amp disconnect, a 250KVA transformer located approximately 250 feet from the switchgear, and an 800-amp 240v Delta 3-phase service located 15 feet from the switchgear. The document also clarifies that the required Arc flash study will only need to cover the new equipment being installed, not the entire building's electrical system.

The related solicitation indicates this is a small business set-aside construction project with a magnitude between $100,000-$250,000 for upgrading electrical systems, including replacing a single-phase 1200-amp disconnect with a new 600-volt 1200-amp distribution panel. The RFQ will be issued around February 6, 2025, with quotes due February 28, 2025. The NAICS code is 238190 with a $19 million size standard, and vendors must be registered in SAM.gov.

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Sol_140G0125Q0052_Amd_0001.pdf PDF
B08_Attachment_8_Q_A_Amd_001_0001.docx DOCX document
B08_Attachment_1_SOW.docx DOCX document
B08_Attachment_3_WD_MO20250084.pdf PDF
B08_Attachment_6_Statement_and_Acknowledgement_of_Subcontractor_SF1413-13e.pdf PDF
B08_Attachment_4_Payment_Bond_SF25A-16d.pdf PDF
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Text version

140G0125Q0052 Questions & Answers Amendment 005

1. Are there any disconnects to power down the switchgear to be replaced in this project?

a. there is a main 1200 amp disconnect

2. What is the size of the transformer for the switchgear? How far away from the switchgear is it?

a. 250KVA (verify with service provider) EST 250 feet

3. What is the size of the 3-phase service and its distance away from the switchgear?

a. 800 amp 240v Delta, distance to 3 phase disconnect EST 15 feet. Distance to transformer H frame EST 250 feet.

4. The Sow mentions a replacement of the owner's Arc flash study (section iii. 3). Can you be more specific about what components need to be included? In other words, is an arc flash study of only the new equipment sufficient? If not, can you supply a line drawing of the entire building's electrical installation?

a. ARC flash study will consist of new equipment only.

File details come from the government source that posted it. Updated .