Spec_01_11_00_Amendment_8.pdf
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- Submission of proposals update #2 Federal contract opportunity
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- W9128F-16-T-0053
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Spec 01 11 00 Amendment 8
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SECTION 01 11 00
SUMMARY OF WORK
08/15
PART 1 GENERAL
1.1 WORK COVERED BY CONTRACT DOCUMENTS
1.1.1 Project Description
This project involves replacing the generator and station service Potential Transformers (PTs) and the Current Transformers (CTs) at multiple power plants. The PTs and CTs are types of instrument transformers used to transform otherwise dangerous inputs from the power train and make the signals safe for use in the protection circuits and metering circuits in the station control boards. The PTs and CTs are connected to the generators, jack bus, and station service equipment.
The work at Fort Peck includes Plant 1 Current Transformers:
Generator (3 Units) Install 3 new 2- circuit CT's on each Unit. These will be installed on the bus bar identified on the drawings.
Unit 1 & 3 CT's are to be metering class, 2500/5A Unit 2 CT's are to be metering class, 1000/5A Potential Transformers:
Generator (3 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 7960/66.4V.
PT's are located in cabinets.
Exciter (3 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 7960/66.4V.
PT's are located in cabinets.
Plant 2 Current Transformers:
Generator (2 Units) Replace 3 Metering CT's per unit.
CT's are to be metering class, 2500/5A.
Potential Transformers:
Generator (2 Units) Replace 2 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
PT's are located in drawers.
Exciter (2 Units) Replace 2 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
PT's are located in drawers.
Station Service Current Transformers:
Replace 6 Metering CT's CT's are to be metering class, 300/5A.
Potential Transformers:
Replace 6 Metering PT's PT's are to be metering class, 2400/120V.
The work at Oahe includes Current Transformers:
Generator (7 Units) Replace 3 Metering CT's per unit CT's are to be metering class, Donut Type, 5000/5A.
Potential Transformers:
Generator (7 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
PT's are located in cabinets.
Rework cabinets to adjust for new PT design Exciter (7 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
PT's are located in cabinets.
Rework cabinets to adjust for new PT design Jack Bus (3 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
PT's are located in cabinets.
Rework cabinets to adjust for new PT design Station Service Current Transformers:
CT's are to be metering class, 150/5A.
480V Main Station Service Switchgear Replace 9 Metering CT's CT's are to be metering class, 1500/5A.
Potential Transformers:
Replace 9 Metering PT's PT's are to be metering class.
PT's are located in buckets.
The work at Big Bend includes Current Transformers:
Generator (8 Units) Replace 3 Metering CT's per unit CT's are to be metering class, 3000/5A, Donut Type.
Potential Transformers:
Generator (8 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Exciter (8 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Jack Bus (4 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Station Service Current Transformers:
Replace 12 Metering CT's SS1 & SS2 CT's are to be metering class, 2000/5A.
SS3 CT's are to be metering class, 50/5A.
Potential Transformers:
Replace 9 Metering PT's PT's are to be metering class, 480/120V.
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The work at Fort Randall includes
Potential Transformers:
Generator (8 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Exciter (8 Units) Replace 3 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Jack Bus (4 Units) Replace 2 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Station Service Current Transformers:
Replace 6 Metering CT's located at breaker 104 and breaker 204 CT's are to be metering class 150:5 ratio on the 13.8kV breakers.
The work at Gavin's Point includes Current Transformers:
Generator (3 Units) Install 3 new CT's per unit.
CT's are to be metering class, 2000/5A.
Leave existing CT's connected to relaying equipment.
Potential Transformers:
Generator (3 Units) Replace 2 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Replace PT drawers Exciter (3 Units) Replace 2 Metering PT's per unit.
PT's are to be metering class, 14400/120V.
Replace PT drawers Station Service Current Transformers:
Install 6 new Metering CT's CT's are to be metering class, 100/5A.
Potential transformers:
Replace 4 Metering PT's PT's are to be metering class 14400/120V Replace the two associated PT Drawers.
1.1.2 Location
The work is located at Fort Peck Dam, Oahe Dam, Big Bend Dam, Fort Randall Dam, and Gavins Point Dam, approximately as indicated. The exact location will be shown by the Contracting Officer.
1.2 OCCUPANCY OF PREMISES
Building(s) will be occupied during performance of work under this Contract.
Before work is started, arrange with the Contracting Officer a sequence of procedure, means of access, space for storage of materials and equipment, and use of approaches, corridors, and stairways.
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[PART 2 PRODUCTS
Not used.
PART 3 EXECUTION
Not used.
-- End of Section --
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