FROM: James D. Herberg, General Manager
Originator: Rob Thompson, Assistant General Manager
SUBJECT:
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MAINTENANCE COATING OF EFFLUENT JUNCTION BOX PIPING
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a Purchase Order Contract with Abhe & Svoboda, Inc. for the maintenance coating of the pipes and associated support structure at the Effluent Junction Box, per specification S-2020-1146BD, for a total amount not to exceed $135,732; and
B. Approve a contingency of $27,146 (20%).
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BACKGROUND
The Effluent Junction Box (EJB), located just outside Plant No. 1, is a critical structure through which the effluent from Plant No. 1 and brine from the Groundwater Replenishment System (GWRS) are routed to Plant No. 2 for ocean discharge. The EJB was constructed in 1989 and includes underground vaults through which steel effluent pipelines enter and exit the structure.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Comply with environmental permit requirements
* Maintain a proactive asset management program
PROBLEM
The external coating on the steel piping and its associated support structures in the EJB pipe vaults has deteriorated and a maintenance coating of these elements is required to prevent deterioration of the pipeline integrity.
PROPOSED SOLUTION
Perform repair coatings on the 66-inch north and south pipes, 84-inch north and south pipes, two 108-inch west pipes, associated actuators and stems, and associated support brackets and surfaces in and above the underground vaults.
TIMING CONCERNS
Due to the deterioration of the pipeline protective coatings, the EJB piping and its support structures in the underground vaults are subject to corrosion due to adverse environmental conditions and incidental water intrusion into the vaults.
RAMIFICATIONS OF NOT TAKING ACTION
Failure or a significant delay to repair the coatings for the pipes and their associated support structures in the v...
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