FROM: James D. Herberg, General Manager
Originator: Rob Thompson, Assistant General Manager
SUBJECT:
title
24-MONTH / 12,000-HOUR SERVICE ON THREE THICKENING CENTRIFUGES AT PLANT NO. 1
end
GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION:
A. Approve a Sole Source Purchase Order Contract to GEA Mechanical Equipment US Inc. to perform Original Equipment Manufacturer recommended 24-month/12,000-hour service on three Thickening Centrifuges at Plant No. 1, for a total amount not to exceed $723,158; and
B. Approve a contingency of $72,316 (10%).
body
BACKGROUND
The Plant No. 1 Thickening and Dewatering facility consists of three GEA-Westfalia (GEA) Separator Thickening Centrifuges and three GEA Dewatering Centrifuges. Thickening Centrifuges thicken the sludge feed from the primary and secondary treatment units before being fed to the anaerobic digestion process. By removing water from the solids feed stream to the digester complex, Orange County Sanitation District (OC San) has been able to increase its solids conversion capacity without building more land and energy intensive digestion structures and supporting mechanical systems.
RELEVANT STANDARDS
* 24/7/365 treatment plant reliability
* Maintain a proactive asset management program
* Comply with environmental permit requirements
PROBLEM
The Original Equipment Manufacturer (OEM), GEA, recommends a major maintenance cycle at the 24-month/12,000-hour run-time milestone to ensure the equipment's reliability and useful life expectancy. The three Thickening Centrifuges are at, or near, the 24-month/12,000-hour threshold for major service. This service is designed to prevent premature or unexpected failure of major components by replacement of major wear/tear parts with OEM parts and services.
PROPOSED SOLUTION
Approve 24-month/12,000-hour service Purchase Order Contract with GEA Mechanical Equipment US Inc., the OEM supplier, which includes parts, labor, and trav...
Click here for full text