FROM: James D. Herberg, General Manager
Originator: Rob Thompson, Assistant General Manager
SUBJECT:
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PURCHASE SPARE INVENTORY PARTS FOR SCHWING CAKE PUMPS
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a Sole Source Purchase Order to Schwing Bioset for the purchase of spare inventory parts for the Schwing Cake Pumps for the Truckloading and Thickening and Dewatering facilities, for a total amount not to exceed $228,193, plus applicable sales tax and shipping; and
B. Approve a contingency of $11,410 (5%).
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BACKGROUND
The Orange County Sanitation District (Sanitation District) utilizes seven Schwing Cake Pumps to transfer biosolids within its facilities. The Thickening and Dewatering facility at Plant No. 1 uses three dewatering centrifuges that are critical to the solids handling process. Each of the three dewatering centrifuges utilize a dedicated Schwing Cake Pump to transfer the dewatered cake to storage silos. An additional dedicated Schwing Cake Pump is utilized to transfer cake from four individual storage silos to the truckloading hopper.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Maintain a proactive asset management program
* Operate and maintain facilities to minimize impact on surrounding communities, including odor, noise, and lighting
PROBLEM
Operation of the Schwing Cake Pumps is critical to the solids removal process. As each of these pumps are dedicated to either a centrifuge or storage silo, the loss of a pump means the loss of use of a centrifuge or storage silo. Limitations to solids processing or storage may require solids storage in digesters or primary basins which can present permit compliance risks.
Most of the spare parts requested come from Germany and/or have long lead times.
PROPOSED SOLUTION
Procure spare inventory parts for Schwing Cake Pumps to maintain asset availability and minimize downtime...
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