140R3024R0025_Questions_and_Responses_13__15__16__19__24__and_63_0003.pdf
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- Solicitation number
- 140R3024R0025
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This document contains questions and responses related to Solicitation 140R3024R0025 for the Hoover Dam Powerplant Station Service Replacement project. The key details are:
The solicitation is for the replacement of station service equipment at the Hoover Dam Powerplant. Responses to several questions are provided, including: removing the requirement for grounded metal safety shutters, allowing non-drawout potential transformers, adding software for required testing, allowing non-grounded shutters for low-voltage switchgear, maintaining the NEMA 12 enclosure requirement, and clarifying that certain existing electrical panels are to remain powered. The solicitation is being issued by the Department of the Interior's Bureau of Reclamation for the Boulder Canyon Project in Arizona and Nevada. No award date, pricing terms, set asides, or incumbent information is provided in this document.
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140R3024R0025
Hoover Dam Powerplant Station Service
RFP 140R3024R0025
Questions and Responses 02
13) Specs call for grounded metal safety shutters, Eaton will provide standard safety shutters which are not metal.
a) TOPIC: main section, safety shutters
b) The grounded requirement was removed. See revised Specifications.
15) Drawout type PTs would not be offered as these are not standard design in C37.20.1 switchgear. Is this acceptable?
a) TOPIC: protection scheme, equipment, PT’s
b) The drawout requirement was removed. See revised Specifications.
16) Secondary test kit not provided for PXR trip unit Magnum breakers. Secondary injection testing is performed with laptop and USB cable.
a) TOPIC: main section, trip units, testing
b) The contractor will supply all testing equipment and qualified/certified personnel to perform the required testing. Software was added for testing. See revised Specifications.
19) Are glastic shutters acceptable for LV switchgear? Grounded metal is typical for medium voltage metal-clad switchgear.
a) TOPIC: main section, equipment ratings
b) The grounded requirement was removed. See revised Specifications.
24) Exception to NEMA 12 construction. Would N3R gasketed be acceptable?
a) TOPIC: main section, equipment ratings
b) NEMA 12 requirement stays, no change.
63) On the gear Line ups DSN,DSD DSA we do not see provisions being requested for to accomodate refeeding CSB1,CSB2,MSE,MSF please clarify how we are permanently repowering these panels.
a) TOPIC: main sections, equipment consolidation, temp power plan
b) These are to remain in place, and remain powered, as they serve critical loads. See revised specifications.
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