FROM: Robert Thompson, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
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PLANT NO. 1 SPARE SLUDGE TRANSFER PUMPS
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a Sole Source Purchase Order to DXP Enterprises, Inc., dba CorTech Engineering LLC, for two spare progressive cavity pumps for a total amount not to exceed $177,444; and
B. Approve a contingency of 10% ($17,744).
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BACKGROUND
The sludge pumping system at Orange County Sanitation District’s (OC San) Plant No. 1 transfers primary sludge from the wet wells serving Primary Clarifiers 17 through 31 to the sludge blend tanks in the Co-Thickening Facility. These pumps and piping can also be configured to transfer primary sludge directly to digesters, providing operational flexibility in managing sludge transfer and treatment.
RELEVANT STANDARDS
24/7/365 treatment plant reliability
Protect OC San Assets
Protect public safety
Maintain a proactive asset management program
PROBLEM
The Primary Sedimentation Basins No. 6-31 Reliability Improvements at Plant No. 1,Project No. P1-133, installed new Seepex progressive cavity pumps to support primary sludge transfer operations at Plant No. 1; however, spare pumps were not included in the project. These pumps are critical to transferring primary sludge from the clarifiers to the sludge blend tanks and digesters. Without readily available spare units, a pump failure could result in an extended outage due to the long replacement lead time. Prolonged interruptions to sludge transfer could lead to sludge accumulation, reduced primary treatment capacity, and increased risk to treatment plant reliability and regulatory compliance.
PROPOSED SOLUTION
Purchase two spare Seepex progressive cavity pumps through DXP Enterprises, Inc., dba CorTech Engineering LLC, the sole authorized representative of Seepex products in California. Maintaining these spare units w...
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