ASI 1_Rev 1.pdf
PDF 88 KB Posted
- Attached to
- Y1NZ--Replace Building Transformers Federal contract opportunity
- Solicitation number
- 36C24621R0047
About this file
This document is an architect's supplemental instruction notice related to the federal contract opportunity to replace building transformers at the Department of Veterans Affairs facility in Salem, Virginia. The notice provides clarifications and revisions to specifications for the contract to replace transformers and switchgear at multiple VA buildings. It specifies that new exterior transformers are to be installed on existing pads, with extensions added if needed, and requires coordination of the transformers, pads and incoming conductors. The notice also revises specifications regarding transformer data submittals, surge arresters, padlocks and coordination studies for medium voltage switchgear and switchboards. It indicates the existing substation has a input selector switch that the new gear must also have capabilities for, and notes that coordination is required for switching loads to temporary switchgear.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| RFI Q-A 15_ 261116 SecondaryUnitSubstations.pdf | ||
| S06 36C24621R0047 0004.pdf | ||
| 36C24621R0047 0004_1.docx | DOCX document | |
| S06 36C24621R0047 0003.pdf | ||
| 36C24621R0047 0003_1.docx | DOCX document | |
| 261313 MedVoltageCircuitBreakerSwitchgear.pdf | ||
| Questions and Answers for Replace Building Transformers_responses 1.pdf | ||
| Transformer Pad Extension.pdf | ||
| 260573 OvercurrentProtectiveDeviceCoordination.pdf | ||
| S06 36C24621R0047 0002.pdf | ||
| 36C24621R0047 0002_1.docx | DOCX document | |
| S06 36C24621R0047 0001.pdf | ||
| S04 Site Visit 3-9-2021.pdf | ||
| 36C24621R0047 0001_1.docx | DOCX document | |
| Comb Specs Docs 20210121.pdf | ||
| 36C24621R0047_2.docx | DOCX document | |
| S02 36C24621R0047.pdf | ||
| Final Drawings 20210121.pdf |
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Text version
Raleigh, NC | Charlotte, NC | Indianapolis, IN | Pittsburgh, PA | Virginia Beach, VA Atlanta, GA | Minneapolis, MN | Fort Collins, CO | Las Vegas, NV www.acg-pa.com
Architect’s Supplemental Instruction #1
Date: March 23, 2021
RE: Department of Veteran Affairs Project 658-19-102 Replace Building Transformers
Salem, VA Contract: 36C24619C0117
From: Apogee Consulting Group, Inc.
NOTICE TO CONTRACTOR: The following supplemental instructions are issued as part of the Contract Documents. The work shall be carried out in accordance with the Contract Documents including these clarifications. Any change in Contract Sum or Contract Time must be resolved with the VA before proceeding with the Work in accordance with these instructions.
1. Sheet E-101: Sheet Note 2 shall read: All new exterior transformers are to be installed on existing transformer pads. All existing exterior transformer pads shall have pad extensions added if required, to install the new transformers. Contractor shall coordinate new transformer, transformer pads extensions, and incoming conductor raceway.
2. Sheet E-102: Sheet Note 2 shall read: All new exterior transformers are to be installed on existing transformer pads. All existing exterior transformer pads shall have pad extensions added if required, to install the new transformers. Contractor shall coordinate new transformer, transformer pads extensions, and incoming conductor raceway.
3. Sheet E-103: Sheet Note 2 shall read: All new exterior transformers are to be installed on existing transformer pads. All existing exterior transformer pads shall have pad extensions added if required, to install the new transformers. Contractor shall coordinate new transformer, transformer pads extensions, and incoming conductor raceway.
4. Specification 26 12 19 1.5 A 1 b shall read: Include electrical ratings, nameplate data, impedance, outline drawing with dimensions and front, top, and side views, weight, mounting details, decibel rating (Factory measured rating), termination information, temperature rise, no-load and full-load losses, regulation, overcurrent protection, connection diagrams, and accessories.
5. Specification 26 12 19 2.5 B shall read: Surge Arresters: Distribution class, one for each primary phase, complying with IEEE C62.11.
6. Specification 26 12 19 2.2 B 3 shall read: Provide a 50 mm (2 inches) size padlock for each assembly, as approved by the COR. Padlocks shall be keyed to the COR’s established key set. Firmly attach the padlock to the door assembly by a chain, using tamper-resistant hardware.
7. Coordination study shall be required for all medium voltage single ended switchgear and all switchboards being replaced. Refer to Specification 26 05 73 included with this response.
www.acg-pa.com Document Type 2
8. Note: ESS and SS unitized substation in Building 143 currently has an input selector switch; GE Air-Interrupter GEK-73003. The new gear shall have the same capabilities. Two feeds but two junction boxes. Junction boxes are in reference to the switchgear replacement and switching existing loads to the temporary switchgear and back.
9. Specification 26 13 13 Medium Voltage Circuit Breaker Switchgear has been added.
–End of Document
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