John Cooper and Associates, P.A.
Cooling Tower Thermal Performance Upgrade Specialist
Cost - Effective Cooling Tower Thermal Upgrades

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Value Added Approach Cost Effective Upgrade Root Cause Analysis

WATTS BAR NUCLEAR UNIT 1 COOLING TOWER
THERMAL PERFORMANCE UPGRADE:
A VALUE ADD ENGINEERING APPROACH
GEORGE P. COOPER, III, P.E. AND JOHN W. COOPER, JR., P.E.

 

In May of 1996, Tennessee Valley Authority's (TVA) Watts Bar Nuclear Unit 1 was put into commercial operation. Soon after start-up, the Unit's natural draft cooling tower was tested by a Cooling Tower Institute (CTI) licensed independent third party testing agency and found to be operating at a maximum of 88% of design capability. Less than three months later, after making minor modifications to the cooling tower's fill system and replacing all of the cooling tower's spray nozzles, the tower was retested by the same CTI testing agency and found to be operating at 106% of design capability, representing a reduction in cold water temperature of 3 - 4oF. TVA's cost-effective cooling tower thermal performance upgrade strategy, which yielded a gain in generation of 44,000 Mw-hrs annually, or an equivalent of about 6 Mw additional system capacity, represents the end-result of significant planning and engineering evaluation of a number of possible thermal upgrade scenarios. This paper presents a summary of Tennessee Valley Authority's successful efforts to optimize the Watts Bar Nuclear Unit 1 cooling tower thermal performance efficiency with minimum capital investment.

 

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