E-502.pdf
PDF 11 MB Posted
- Attached to
- Center Hill Medium Voltage Cable Replacement Federal contract opportunity
- Solicitation number
- W912P521B0007
About this file
This document outlines a federal contract opportunity issued by the U.S. Army Corps of Engineers Engineering District Nashville. The solicitation seeks a firm fixed price construction contract to remove and replace existing medium-voltage cables and associated equipment for four generating units at the Center Hill Power Plant in Lancaster, Tennessee. The work includes modifying, installing, terminating, and testing medium-voltage bus work and cables; disassembling and removing existing cables and terminations; procuring and installing new 15kV MV-105 cables and Class 3 terminations; procuring and installing temporary feeders and supporting systems; developing asbestos abatement and environmental mitigation plans; and performing factory and field testing of new cable systems. A site visit is tentatively scheduled for April 13, 2021, with submission of a site visit request form encouraged. Questions must be submitted in writing to the specified Contract Specialist by the stated deadlines.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| W912P521B0007 Bid Abstract page 1.pdf | ||
| W912P521B0007 Bid Abstract page 2.pdf | ||
| Center Hill Reference Photos - Amendment 002.pdf | ||
| M-401.pdf | ||
| W912P521B00070002 Amendment 2.pdf | ||
| W912P521B0007 TSpecs Amendment 0002.pdf | ||
| E-602.pdf | ||
| W912P521B00070001 Amendment 1.pdf | ||
| W912P521B0007 Site Visit SignIn.pdf | ||
| W912P521B0007 RTA TPlans.pdf | ||
| W912P521B0007 final.pdf | ||
| W912P521B0007 RTA TSpecs.pdf |
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1312111098765432
®of Engineers
US Army Corps
F il e N a m e
P lo t D a te
P lo t T im e
T im e
D a te
F il e
B
A
MID - SPAN
S A
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NOTE: ONLY ONE CABLE SHOWN FOR BREVITY.
S A
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MID - SPAN
63 5
SECTION: TYPICAL SAG SECTION
3/8"=1'-0"SCALE:
SHEET KEYNOTES
PULLING DEVICE(S). NEVER USE A SADDLE CLEAT TO TERMINATE TENSION.
USE ANCHOR TO TERMINATE TENSION PRIOR TO RELEASING ANY CABLE 7.
SET THIS SAG SIXTH ACCORDING TO TABLES ON THIS SHEET.6.
TIGHTEN THIS CLEAT FIFTH.5.
SET THIS SAG FOURTH ACCORDING TO TABLES ON THIS SHEET.4.
TIGHTEN THIS CLEAT THIRD AFTER SETTING SAG FROM KEYNOTE 2.3.
ACCORDING TO TABLES ON THIS SHEET.
WHEN TENSION TERMINATION CLEAT IS SET, SET THIS SAG SECOND 2.
PULLING DEVICE(S). NEVER USE A SADDLE CLEAT TO TERMINATE TENSION.
USE ANCHOR TO TERMINATE TENSION PRIOR TO RELEASING ANY CABLE 1.
FROM SUPPORT 39 (ANCHOR) TO SUPPORT 27 (ANCHOR)).
FOR CIRCUIT 4A AND 4B, PINS MAY BE REMOVED AFTER THE SAG IS SET
PROPERLY FOR AN ENTIRE ANCHOR TO ANCHOR SECTION (FOR EXAMPLE,
DO NOT REMOVE LEVELING PIN UNTIL SAG IS SET AND CLEATS ARE TORQUED 8.
SETTING SAG.
DOCUMENTATION OF HOW SECOND CABLE PULL WILL NOT INTERFERE WITH
ENSURE PROPER SAG AND INTERFERENCE IS MINIMIZED, OR PROVIDE
SET SAG OF ENTIRE CABLE RUN BEFORE PULLING SECOND CABLE TO 6.
SET SAG AND TIGHTEN CLEATS IN ORDER AS SHOWN IN KEYNOTES.5.
MEASURE SAG.
APPROPRIATE TABLE TO SET THE SAG OF THE CABLE. SEE ABOVE DETAIL TO
USING THE TEMPERATURE OF THE CABLE AND SPAN LENGTH, USE THE 4.
MEASUREMENT DEVICE.
OR CONTRACTOR SHALL PROVIDE DOCUMENATION OF EMI RESILIENCE OF
DETERMINE TEMPERATURE SAG. CABLE SHALL BE OFF AND DE-ENERGIZED,
TEMPERATURE OF TUNNEL. CABLE TEMPERATURE SHALL BE USED TO
TEMPERATURE IMMEDIATELY PRIOR TO SETTING SAG. DO NOT USE AMBIENT
USING A CALIBRATED TEMPERATURE SENSING "GUN", TAKE THE CABLE 3.
MOVEMENT IS NOTABLE.
SIDES OF STRAP WITH DISTINCT PAINT MARKING TO ENSURE CABLE
DO NOT USE SADDLE STYLE CLEAT TO HOLD CABLE IN TENSION. MARK BOTH 2.
AND CE406 FOR TERMINATION DETAILS.
NOT CUT OR TERMINATE CABLE UNTIL ALL SAGS ARE SET. SEE SHEETS CE405
OTHER END OF THE TUNNEL. DO NOT "SKIP" SECTIONS AND RETURN. DO
TRANSFORMER END OF THE TUNNEL. WORK FROM THAT POINT TO THE
CLEAT (ANCHOR) NEAREST THE TERMINATION POINT AT THE GENERATOR OR
BEGIN AT ONE END OF TUNNEL. START FROM THE FIRST TENSION HOLDING 1.
DETERMINED AND INSTALLED CORRECTLY.
THE FOLLOWING PROCEDURE SHALL BE USED TO ENSURE CABLE SAG IS
CABLE SAG SETTING METHOD
DETAIL: SAG SECTION
6"=1'-0"SCALE:
MAXIMUM SAG (7.25").
CALCULATIONS, OR REVISED TABLES WHICH DO NOT EXCEED DISPLAYED
BASED ON THESE CONDITIONS AND SUBMIT THIS DRAWING TOGETHER WITH
DISTANCES. CONTRACTOR TO PROVIDE ACTUAL DISTANCES AND TENSIONS
EXPECTED TO CHANGE BASED ON TUNNEL CONSTRAINTS AND SUPPORT
SAG TABLES HAVE BEEN ISSUED AS A GENERAL EXAMPLE. TABLES ARE 8.
SPANS REMAIN THE SAME.
LOOKUP TABLES FOR SLOPE SECTIONS. ALL OTHER NOTES FOR LEVEL
BE MEASURED PERPINDICULAR TO THE STRINGLINE PATH. USE SLOPE
STRAPS. MID SPAN TO BE THE HALF WAY POINT OF THIS DISTANCE. SAG TO
FOR SLOPE SPANS: MEASURE POINT TO POINT DISTANCE BETWEEN CLEAT 7.
FROM STRING LINE AND MID-SPAN LOCATION.
USACE WILL USE DIGITAL INTERNAL CALIPER TO VERIFY SAG MEASUREMENT 6.
SAG TOLERANCING TO BE WITHIN +/- 1/16".5.
ACCEPTANCE.
USACE WILL VERIFY MID-SPAN LOCATION AND DEPTH OF SAG PRIOR TO 4.
QA/QC VERIFICATION.
ADD DISTINCT PAINT MARKING TO MID SPAN MEASUREMENT POINT FOR 3.
SHOWN ON THIS SHEET.
MID-SPAN TO BE FOUND WITHIN 1/2" WHEN CABLE SAG IS WITHIN RANGE AS 2.
CLOSEST TO THE SAG.
CABLE, IMMEDIATELY ADJACENT TO THE LAST SADDLE STRAP ON THE SIDE
WHEN MEASURING SAG FROM AN ANCHOR, MEASURE FROM THE TOP OF THE 2.
THE TOP OF THE CABLE IN THE MID-SPAN, AS SHOWN ABOVE.
CABLE ON THE SADDLES, IMMEDIATELY ADJACENT TO THE SADDLE STRAP TO
WHEN MEASURING SAG ON A SADDLE, MEASURE FROM THE TOP OF THE 1.
GENERAL NOTES
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