FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
title
CENGEN COOLING WATER PIPE REPLACEMENT AT PLANT NO. 2, PROJECT NO. FE20-04
end
GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION: Recommend to the Board of Directors to:
A. Receive and file Bid Tabulation and Recommendation for Cengen Cooling Water Pipe Replacement at Plant No. 2, Project No. FE20-04;
B. Award a Construction Contract to Innovative Construction Solutions, Inc. for Cengen Cooling Water Pipe Replacement at Plant No. 2, Project No. FE20-04, for a total amount not to exceed $3,487,600; and
C. Approve a contingency of $348,760 (10%).
body
BACKGROUND
The Central Generation (CenGen) Facility at Orange County Sanitation (OC San) Plant No. 2 was constructed in the early 1990s to generate electricity using digester gas. During normal operating conditions, the CenGen Facility at Plant No. 2 supplies approximately 95% of the electricity at Plant No. 2. During a utility power outage, CenGen provides standby power to some of the treatment processes. CenGen is dependent on cooling water to operate.
RELEVANT STANDARDS
* Comply with California Public Contract Code Section 20103.8, award construction contract to lowest responsive, responsible bidder
* Commitment to safety & reducing risk in all operations
PROBLEM
The cooling water is highly corrosive and is causing the existing steel piping to develop leaks in the piping and in the pipe joints. Currently, the leaks are managed by OC San's Maintenance Division with short-term solutions such as replacing short pipe segments, installing clamps, or repairing various types of joints in different ways. With time, the leaks will increase in occurrence and size and will cause the overall piping to fail. If the cooling water piping fails, one or more engines will need to be shut down depending on location of the failure, which will reduce power production. In a...
Click here for full text