FROM: James D. Herberg, General Manager
Originator: Riaz Moinuddin, Director of Operations & Maintenance
SUBJECT:
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PURCHASE AND DELIVERY OF EMERGENCY LOX BACKUP SYSTEM AT PLANT NO. 2
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Approve a Purchase Order Contract to Cryo-Lease for the purchase and delivery of Emergency LOX Backup System, Specification No. E-2022-1348BD, for a total amount not to exceed $358,000, plus applicable sales tax; and
B. Approve a contingency of $35,800 (10%).
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BACKGROUND
Orange County Sanitation District (OC San) operates a Liquid Oxygen (LOX) facility at Plant No. 2. This LOX system supports the secondary treatment process and consists of two LOX tanks, six vaporizers, and piping distribution to the aeration basins. During a condition assessment performed by Diversified Project Services International, one of the LOX tanks was found to be compromised by cracking. Several repair attempts have been made to repair this cracking. A rental unit is on-site to provide a short-term back-up unit for the failed tank until a longer-term solution is in place.
RELEVANT STANDARDS
* Maintain a proactive asset management program
* Maintain a culture of improving efficiency to reduce the cost to provide the current service level or standard
PROBLEM
During a more comprehensive second assessment performed by Chart International, Inc., additional significant internal damage was discovered, and a tank replacement is needed. The second LOX tank was installed at the same time as the failed tank in 1983. In the event that this second tank were to fail, OC San's ability to run its Oxygen Activated Sludge secondary treatment process would be compromised.
PROPOSED SOLUTION
Procure one mobile tank and vaporizing unit, with a 9,000-gallon LOX tank and 25,000 Standard Cubic Foot per hour vaporizer unit from Cryo-Lease. Cryo-Lease was the only responsive bidder. This unit will serve as t...
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