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

THERMAL PERFORMANCE UPGRADE OF THE ARKANSAS NUCLEAR ONE
COOLING TOWER: A "ROOT CAUSE" ANALYSIS APPROACH
GARY W. LIFFICK, P.E. AND JOHN W. COOPER, JR., P.E.

The thermal performance efficiency of the natural draft cooling tower at Entergy Operations' 858 MWe Arkansas Nuclear One, Unit 2 was successfully upgraded to 101% of design performance capability in April 1994 as the end result of a unique "root-cause" analysis of the cooling tower's long-standing performance deficiencies. Through application of state-of-the-art diagnostic testing methods and computer modeling techniques, Entergy was able to identify and correct air/water maldistribution problems in the 447 foot tall counterflow design at minimal cost. Entergy estimates that the savings realized, as a result of the 1.2oF reduction in cooling tower outlet water temperature, will pay for the thermal upgrade project in approximately 18 months.

 

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