FROM: Robert Thompson, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
title
PRIMARY EFFLUENT PUMP STATION PUMP #3 REBUILD AT PLANT NO. 1
end
GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION:
A. Approve additional funds of $244,601 to Sole Source Purchase Order 161427-OS, to DXP Enterprises, Inc. (formerly Cortech Engineering, Inc.), to rebuild Primary Effluent Pump Station Pump #3 at Plant No. 1, for a new total amount not to exceed $322,061; and
B. Approve a contingency of $32,206 (10%).
body
BACKGROUND
Orange County Sanitation District (OC San) Plant No. 1 Primary Effluent Pump Station (PEPS) has three vertical pumps that were installed during Project No. P1-16 in 1973. Primary effluent is pumped through Primary Sedimentation Basins to the secondary treatment at the activated sludge facility, AS-1, at Plant No. 1. Additional flows that enter the PEPS wet well include Central Generation cooling water, plant water strainers, and dissolved air flotation thickeners.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Comply with environmental permit requirements
* Maintain a proactive asset management program
* Operate and maintain facilities to minimize impacts on surrounding communities, including odor, noise, and lighting
PROBLEM
PEPS Pump No. 3 has been operating at a diminishing output and requires overhaul. As a result, primary effluent flow capacity is limited to Secondary Basins for treatment. The pump was shipped to the service facility and torn down for diagnosis under a purchase order contract. This diagnosis revealed the need for additional parts and rework than what was anticipated, including a new impeller which must be cast and machined to original specifications.
PROPOSED SOLUTION
Approve an additional $244,601 to Purchase Order 161427-OS for DXP Enterprises, Inc. to rebuild the PEPS Pump #3 based on their previous inspection report that identifie...
Click here for full text