ML20093M759
| ML20093M759 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 07/16/1984 |
| From: | Booker J GULF STATES UTILITIES CO. |
| To: | Jay Collins NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| DR-171, RBG-18228, NUDOCS 8408010012 | |
| Download: ML20093M759 (1) | |
Text
i GULF STATES UTILITIES COMPANY P O S T O F FIC E B O X 2951
- BEAUMONT, TEXAS 77704 AREA CODE 713 838 6631 July 16, 1984 RBG 18228 File Nos. G9.5, G9.25.1.1 Mr. John T. Collins, Regional Administrator U. S. Nuclear Regulatory Commission Region IV, Office of Inspection and Enforcement bbb
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Dear Mr. Collins:
h River Bend Station Unit I Docket No. 50-458 Final Report /DR-171 Gulf States Utilities Company (CSU) has completed its evaluation of DR-171 concerning the flow adjustment subassembly on Model Number 1284 Robertshaw thermostatic flow control valves on the jacket water cooling system for standby diesel generators supplied by Transamerica Delaval, Incorporated (TDI).
It has been determined that failure of the assembly would cause overcooling of the engine. However, overcooling vill not prevent the engine's performance or its ability to carry out its safety function. GSU has concluded the safe operations of the plant would not har-been adversely affected, since the valves are failsafe; therefore, this condition is not reportable under 10CFR50.55(e).
Rosemount has since modified the design of the overrun assemblies and TDI recommended that the overrun assemblies be replaced. The replacement parts have been ordered under Purchase Order No. 12210-26637 and replacement will take place when the parts are received.
Sincerely,
/%fs -
J. E. Booker Manager-Engineering, Nuclear Fuels & Licensing River Bend Nuclear Group PJD JEB/PJD/lp cc: Director of Inspection & Enforcement U. S. Nuclear Regulatory Corunission Washington, D. C.
20555 NRC Resident Inspector-Site h,
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