ML20050B686
| ML20050B686 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 03/31/1982 |
| From: | Mardis D FLORIDA POWER CORP. |
| To: | Stolz J Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.K.2.09, TASK-TM 3F-0382-26, 3F-382-26, NUDOCS 8204070208 | |
| Download: ML20050B686 (2) | |
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Mr. John F. Stolz, Chief Operating Reactor Branch #4 to Division of Licensing U.S. Nuclear Regulatory Commission Washington, D.C. 20555
Subject:
Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 NUREG-0737, item II.K.2.9 Failure Mode Effects Analysis of Integrated Control System
Dear Mr. Stolz:
In compliance with NUREG-0737, item II.K.2.9, " Failure Mode Effects Analysis of Integrated Control System," Florida Power Corportaion (FPC) confirmed the applicability of B&W Report B AW-1564, " Integrated Control System Reliability Analysis" to Crystal River Unit 3 (letter dated August 31, 1979). FPC also submitted a plan for implementation of the report recommendations (letter dated November 23, 1979) in response to an NRC request for additional information (letter dated November 7,1975).
The plan called for installation of a static transfer switch for transfe of ICS input power to an alternate source upon ICS power feed failure. The installation of the static transfer switch was completed by August,1980.
Also implemented was a study of the main feedwater pump turbine governor oil system.
Past problems causing runback to minimum speed of the pump turbine were believed to be due to dirty governor oil. Evaluation of the governor oil system and corrective actions have improved the reliability of the main feedwater pump. However, additional efforts are being pursued to preclude all runbacks.
8204070208 820302 I h PDR ADOCK 05000302 P
PDR General uttice 3201 inirty tourtn ureet win. P O Box 14042. St Petersburg. Fbrda 33733 813-866-5151k
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Mr. John F. Stolz March 31,1982 Page 2 Since all commitment 3 contained in our November 23,1979 letter have been acted on or implemented, the requirements of Item II.K.2.9 are satisfied and action on the item completed.
If you have any further questions regarding this subject, please contact this office.
Very truly yours, h
MA David G. Mardis Acting Manager Nuclear Licensing RAW:mm cc:
Mr. 3. P. O'Reilly, Regional Administrator Office of Inspection & Enforcemcat U.S. Nuclear Regulatory Commission 101 Marietta Street N.W., Suite 3100 Atlanta, GA 30303
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