SK1 R3 11-18-2024.pdf
PDF 314 KB Posted
- Solicitation number
- S-DASOBO-00009472
- Issued by
- Lake County, Albany City, Oregon
About this file
This document is a detailed design sketch (SK#1 R3 - 11/18/2024) provided by the utility company Commonwealth Power Inc. (CPI) for a state and local contract opportunity related to upgrading the electrical infrastructure at the Oak Creek Youth Correctional Facility (OCYCF) in Albany, Oregon. The scope of work includes excavating and intercepting the existing buried primary conduit/conductors, installing a 3-phase junction cabinet, and refeedingundeground primary 3-phase conductors back to the CPI switch. The customer contractor is required to provide and install various conduits, pull strings, and a concrete transformer vault per the provided specifications and details. CPI will provide and install the new transformer.
The document also includes general notes outlining requirements for locates, conduit routing, clearances, access, and coordination with CPI during the construction process. This work is part of a larger state and local contract opportunity for the construction of a new parole and probation building at the OCYCF facility in Albany, Oregon, which is being procured by the state of Oregon and involves the jurisdictions of Lake County and the City of Albany.
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Text version
TO EXISTING VAULT MOUNTED
150 KVA 3-PH TRANSFORMER
EXISTING CPI
SWITCH #LTL/4
CPI TO EXCAVATE AND INTERCEPT EXISTING
BURIED PRIMARY CONDUIT/CONDUCTORS AND
INSTALL 3-PHASE JUNCTION CABINET. CPI TO
REFEED UG PRIMARY 3-PHASE CONDUCTORS
BACK TO CPI SWITCH. CUSTOMER
CONTRACTOR TO PROVIDE 1-YARD ¾ MINUS
ROCK FOR CPI TO INSTALL IN BASE OF PIT.
CUSTOMER CONTRACTOR TO PROVIDE AND INSTALL (3) 3” SCHEDULE 40
PVC CONDUITS IN A 48” BELOW GRADE TRENCH. PROVIDE AND INSTALL
200-LB PULLSTRING INSTALLED THROUGH EACH CONDUIT. STUB
CONDUITS 2’ FROM LOCATE MARKS OF EXISTING BURIED POWER
CONDUITS. LEAVE (3) 3” SCHEDULE 40 PVC SWEEP CONDUITS WITH
MINIMUM 36” RADIUS NEED TO JUNCTION CABINET FOR CPI TO INSTALL.
CUSTOMER CONTRACTOR TO EXCAVATE A 6’W X 8’L X 4’-6”D PIT FOR NEW
CONCRETE TRANSFORMER VAULT. SEE ATTACHED VAULT/LID DETAIL FOR
FURTHER INSTALLATION INSTRUCTIONS. STUB THE (3) 3” CONDUITS AND
THE (2) 4” CONDUITS INTO THE CONCRETE VAULT. CONTRACTOR TO
PROVIDE AND INSTALL GROUT AROUND CONDUIT ENTRY POINTS TO RE-
SEAL THE VAULT. CPI TO PROVIDE AND INSTALL THE TRANSFORMER.
CUSTOMER CONTRACTOR TO PROVIDE AND
INSTALL (2) 4” SCHEDULE 40 PVC CONDUITS
IN A 36” BELOW GRADE TRENCH. PROVIDE
AND INSTALL 200-LB PULLSTRING INSTALLED
THROUGH EACH CONDUIT.
EXISTING BURIED 3-PHASE PRIMARY LINE
EXTENSION TO REMAIN. SEE NOTES
INCLUDED WITH THIS DESIGN SKETCH
CUSTOMER CONTRACTOR TO SWEEP THE
4” CONDUITS, WITH PULL STRING, UP INTO
BOTTOM OF CT ENCLOSURE. ALL SWEEPS
TO HAVE A MINIMUM 36” RADIUS.
CUSTOMER CONTRACTOR TO PROVIDE AND INSTALL CT ENCLOSURE, CT MOUNTING
BASES, (1) 1.5” SCHEDULE 40 PVC CONDUIT AND 20A RATED METER-BASE. SEE
ATTACHED CT/METER SPECIFICATION SAMPLE OF APPROVED EQUIPMENT.
SK#1
R3 - 11/18/2024
GENERAL NOTES:
HAVE LOCATES PERFORMED ON ENTIRE EXISTING UNDERGROUND PRIMARY POWER LINE EXTENSION PRIOR TO ANY EXCAVATION. MARK LOCATION OF EXISTING CONDUIT ROUTE TO ENSURE THAT EXISTING CONDUIT ROUTE WILL NOT BE
LOCATED UNDER THE FOUNDATION OF THE NEW BUILDING.
IF IT IS FOUND THAT THE EXISTING UNDERGROUND 3-PHASE CONDUIT SYSTEM THAT EXTENDS FROM OUR SWITCH TO 150KVA 3-PHASE TRANSFORMER IS LOCATED UNDER THE PROPOSED BUILDING, CPI WILL DEVELOP A NEW UNDERGROUND DESIGN TO REFEED THE EXISTING 150KVA TRANSFORMER. THE COST FOR THIS ADDITIONAL DESIGN, MATERIAL AND LABOR WILL BE INVOICED TO THE CUSTOMER SEPARATELY FROM THE ORIGINAL SUBMITTED INVOICE.
ALL SWEEPS TO HAVE A MINIMUM 36” RADIUS.
CUSTOMER TO INSTALL 200LB POLY-LINE (PULLSTRING) IN ALL POWER CONDUITS.
NO MORE THAN 270 DEGREES OF BENDS ARE ALLOWED IN A SINGLE CONDUIT RUN. NO HEATED BENDS ALLOWED. IF FOUND THAT CUSTOMER HAS HEATED THE CONDUIT TO CREATE A BEND, CUSTOMER WILL BE RESPONSIBLE TO RUNNING A MADREL THROUGH THE CONDUIT TO ENSURE IT WILL ACCEPT THE WIRING BEING INSTALLED IN THE CONDUIT.
WHEN THE TRANSFORMER VAULT PIT IS EXCAVATED
MAINTAIN 12” SEPARATION BETWEEN CPI POWER CONDUIT SYSTEM AND ANY OTHER UTILITY CONDUITS OR PRIVATELY OWNED CONDUITS/PIPING.
WHEN THE TRENCH IS OPEN, THE CONDUITS, SWEEPS AND PULLSTRING IS INSTALLED PLEASE CALL ME OR TEXT ME AS I WILL NEED TO INSPECT THE UNDERGROUND EQUIPMENT INSTALLATION PRIOR TO YOUR BACKFILLING THE TRENCH.
CPI SECONDARY SERVICE WIRE WILL BE TWO RUNS OF 4/0 QUAD ALUMINUM QUAD CABLE. CUSTOMER TO ENSURE UTILITY SECTION OF CT ENCLOSURE WILL BE ABLE TO ACCEPT AND HAVE AVAILABLE LUG SPACE FOR LANDING THESE CABLES.
THE TRANSFORMER VAULT MUST BE LOCATED WITHIN 20’ OF A DRIVABLE SURFACE.
SEE TRANSFORMER CLEARANCE REQUIREMENTS PROVIDED IN THE ATTACHED DETAIL.
CPI WILL ALLOW THE NEW PAVED PARKING LOT TO BE LOCATED OVER OUR EXISTING BURIED PRIMARY LINES. THE CUSTOMER WILL NEED TO BE MADE AWARE THAT SHOULD WE REQUIRE ACCESS TO THIS EQUIPMENT , CUTTING THE
PAVEMENT TO GAIN ACCESS MAY BE REQUIRED. CPI WILL AVOID THIS IF AT ALL POSSIBLE.
PLEASE ENSURE THAT THE CRITICAL ROOT ZONE OF ANY TREE IS NOT LOCATED OVER OUR EXISTING BURIED PRIMARY LINES. NO TRESS SHOULD BE PLANTED DIRECTLY OVER OUR EXISTING LINES.
LIGHT POLES, CUSTOMER EQUIPMENT OR GROUNDING EQUIPMENT SHOULD BE INSTALLED DIRECTLY OVER CPI’S EXISTING BURIED PRIMARY LINES.
CPI WILL REQUIRE 24-HOUR ACCESS TO ALL EQUIPMENT, 365 DAYS A YEAR.
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