FROM: James D. Herberg, General Manager
Originator: Rob Thompson, Assistant General Manager
SUBJECT:
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ON CALL PLANT NO. 1 & PLANT NO. 2 MEDIUM VOLTAGE CABLE TESTING SERVICES (MP-320)
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a three-year service contract with Halco Service Corp. for assessment and testing of Plant No.1 and Plant No. 2 medium voltage cables per Specification No. S-2019-1107BD, for a total amount not to exceed $491,655; and
B. Approve a contingency of $73,748 (15%).
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BACKGROUND
The Orange County Sanitation District (Sanitation District) maintains large electrical distribution systems at the treatment plants utilizing medium voltage cables. The Plant No.1 and Plant No. 2 electrical distribution systems utilize redundant 12,470 volt feeds from a Southern California Edison utility substation and the Central Generation facilities. The distribution systems supply power to multiple Power Buildings and Electrical Distribution Centers; some of which have diesel standby generators. This system also contains a mix of medium voltage vacuum circuit breakers, protective relays, load interrupter switches, and fuse protection. Performing condition-based assessments and testing of critical medium voltage feeder circuits will reduce the risk of unexpected cable failures, improve cable system reliability, and identify needed repairs or replacement of medium voltage feeder cables.
RELEVANT STANDARDS
* Protect Orange County Sanitation District assets
* 24/7/365 treatment plant reliability
* Maintain a proactive asset management program
PROBLEM
The Sanitation District does not possess the necessary equipment or expertise to perform comprehensive medium voltage cable testing. Medium voltage cable testing is recommended to identify cables that are at risk of failure.
PROPOSED SOLUTION
The Sanitation District recommends contracting with Halco Services Corp. as the lowest respons...
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