Switchboard Answers 15 JULY.pdf
PDF 360 KB Posted
- Attached to
- Main Switchboard Panel Install
- Solicitation number
- W912HQ26S0034
About this file
This file is a Pre-Bid Requests for Information document for Solicitation No. W912HQ26S0034, issued by the U.S. Army Corps of Engineers (USACE) for the Main Electrical Switchboard Install for UMSB (Kingman Building 2593/USACE HQ). The solicitation seeks contractor responses to 22 questions designed to clarify scope, requirements, and feasibility for replacing an existing switchgear room installation.
Key technical requirements include: independent third-party inspections for the 2000A switchgear installation; a temporary generator to provide power during switchgear replacement since utility power will not be available; temporary equipment staging at approved locations (outside loading dock or beside existing generator); and field verification of existing conditions including generator, automatic transfer switch (ATS), and motor control center (MCC) loads, as as-built drawings are from 1974 and outdated. The contractor must include allowance for potential asbestos-containing material abatement if detected in the existing switchgear. All work must be performed during normal hours except for planned power outages, subject to workplan pre-approval. Required maintenance contractors (Fire Alarm, BAS, Generator, ATS, Security) must be present during cutovers with standby support costs included in pricing.
Engineering services include 35% and 95% design submissions, Issued for Construction (IFC) drawings, one-line diagrams, protective device coordination study, arc flash study, load calculations, equipment layout, demolition and temporary power drawings, cutover sequence, and as-built documentation. The government review period is 15 business days. The Period of Performance includes engineering, procurement, manufacturing, delivery, installation, commissioning, and government review for a 180-day overall timeline. The government confirmed the proposal deadline can be extended to allow 2-3 weeks for switchgear manufacturer pricing. Dumpster space, laydown area, and restrooms will be provided; worker escorts are not required.
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PRE-BID REQUESTS FOR INFORMATION
Solicitation No.: W912HQ26S0034
Job Name: Main Electrical Switchboard Install for UMSB (Kingman Building 2593/ USACE HQ)
1. Please provide applicable Dominion Power Metering Requirements or Dominion Metering Guideline documents. Provide Applicable metering standards
2. Are 3rd Party Inspections required for the 2000A SWGR Install? YES. Independent Testing Agency
3. Will there be any required Contractors that hold the current maintenance contracts to be present during power outages for cutovers? If costs for those contractors’ participation are to be included in this pricing, please identify the required contractors and the POCs so we can gather associated costs. Include cost for standby support
• Fire Alarm
• BAS
• Generator
• ATS
• Security
4. Is temporary power required to be provided during the SWGR replacement?
(ADD ALTERNATE) - Temporary power is TBD based on which systems require temporary power
5. Please confirm maximum allowable outage time for power cutovers from existing SWGR to temporary power and from temporary power to permanent SWGR.
maximum outage durations for:
Utility cutover Temporary power transfer Final energization
Weekend work (ANTICIPATED)
6. Confirm that Utility power will be available during the SWGR replacement to power the
Temporary Equipment. Temporary generator required.
7. Can you confirm if the temporary SWGR equipment can be placed outside the loading dock in front of the entrance to the Vault room or beside the existing generator?
Recommend identifying approved staging locations on a site sketch
8. Will the NTP be based upon equipment availability or can the POP be extended to reflect estimated product lead times? The Period of Performance includes engineering, procurement, manufacturing, delivery, installation, commissioning, and Government review unless modified by contract.
9. Is there available space at or near the Loading Dock Area for Dumpster? YES
a. Dumpster location
b. Laydown area
c. Restrooms
Will be provided
10. Will workers need to be escorted during construction? If so, will the contractor be responsible for any costs associated with the escorts? NO
11. Will interior restrooms be available for the workers use during construction? YES
12. Please confirm that all work can be performed during normal hours other than outages for cutover. YES – Subject to workplan pre-approval
13. Should the contractor plan to reuse / modify or replace the existing busway between the SWGR and Transformer Vault? NO
14. Is any inside storage/ laydown space available other than the vault or Electric Room within the building for materials and tools? NO
15. The as-built one-line diagram provided is from 1974. Several upgrades have been installed since that time. Are there any as-built drawings that show the upgrades, specifically the existing generator and ATS? NO. Perform field verification / site visit
16. Are any ground floor drawings available that show the location of the MCC unit? YES
17. Can you confirm the loads on the MCC unit are as shown on the 1974 as-built one line diagram? NO. Perform field verification / site visit
18. Can the existing disconnect labeled spare behind the SWGR be demolished?
19. Many older gear assemblies used Asbestos as an insulating material. Does this existing
SWGR contain any asbestos products? If unknown, should the contractor include an allowance for asbestos containing material abatement and disposal? YES
20. Are any other known products that contain ACM in the area that may be disturbed? No known ACM
21. Our understanding of the scope includes engineering services, including drawings, phasing plan, load analysis, code compliancy, coordination study / arc flash analysis to develop arc flash labels and standard CA services (submittal review, RFIs, site visits, as-builts etc). Regarding the engineering services, please confirm the following:
a. Please confirm what design submissions are required for the demolition, phasing and new work plans? (95% and IFC?)
b. Please confirm the design deliverables required (drawings, specifications, calculations, etc).
c. Is the design and design review period included in the 180 days period of performance?
d. What is the expected government review period of design documents?
e. Is pre-release of the switchboard submittal prior to issuance of the IFC documents acceptable, due to expected long equipment lead times?
35% Design 95% Design Issued for Construction (IFC) One-line diagrams Protective device coordination study Arc flash study Load calculations Equipment layout Demolition drawings Temporary power drawings Cutover sequence As-built drawings Government review period (15 business days).
22. Would it be possible to extend the proposal deadline to allow adequate time for vendor pricing? Typically, the switchgear manufacturers need about 2-3 weeks to accurately price gear of this size. YES
File details come from the government source that posted it. Updated .