ML20086H771
| ML20086H771 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 06/23/1975 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Anthony Giambusso Office of Nuclear Reactor Regulation |
| References | |
| AO-75-44, NUDOCS 8401200235 | |
| Download: ML20086H771 (2) | |
Text
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7, PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET PHILADELPHI A. PA.19101 (2151841-4o00 June 23, 1975 Mr. A. Giambusso Director Division of Reactor Licensing Office of Nuclear Reactor Regulations United States Nuclear Regulatory Commission Washington, DC 20555
Dear Mr. Giambusso:
Subject:
Abnormal Occurrence The following occurrence was reported to Mr. Don Caphton, Region 1, Of fice of Inspectico and Enforcement, United States Nuclear Regulatory Commission on June 13, 1975 Written notification was made to Mr. James P. O'Reilly, Region 1, Of fice of Inspection and Enforcement, United States Nuclear Regulatory Commission on June 16, 1975 In accordance with Section 6.7 2.A of the Technical Specifications, Appendix A of DPR-44 for Unit 2 Peach Bottom Atomic Power Station, the following occurrence is being submitted to the Directorate of Reactor Licensing as an Abnormal Occurrence.
Reference:
License Number DPR-44 Technical Specification
Reference:
4 5.G Report No.:
50-277-75-44 Report Date:-
June 23, 1975 Occurrence Date:
June 13, 1975 Facility:
Peach Bottom Atomic Power Station R.D. 1, Del ta, Pennsylvani a 17314 Identification of Occurrence:
l Failure of LS-4223 to operate SV-4223 (RHR Head Spray Line high point vent) on low accumulator level.
Conditions Prior to Occurrence:
Unit 2 shutdown.
Description of Occurrence:
Upon receipt of the head spray accumulator low level alarm, j
investigation revealed that the vent solenoid valve failed to open to refill the head spray high point accumulator.
8401200235 750623
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PDR ADOCK 05000277
. U O / 'f S
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Mr. A. Giambusso 50-277-75-44 June 23, 1975 Page 2 Designation of Apparent Cause of Occurrence:
Fuse fatigue.
. Analysis of Occurrence:
There are no safety implications because the level switch alarmed properly and the operator was able to manually perform the function of the vent solenoid valve.
Corrective Action:
The operator manually vented the accumulator to ensure that the head spray line was filled.
Investigation revealed an open fuse to the solenoid valve. The fuse was replaced and the switch was cycled to open the solenoid valve successfully several times.
Failure Data Similar failures reported as A0-50-277-75-4, 50-278-75-20, and 50-277-75-34.
Very truly'yours,
. Cooney As 't Gen't Superintencent Generation Division cc :- Mr. J. P. O'Reilly Director, Region J Office of Inspection and Enforcement United States Nuclear Regulatory Commission 631 Park Avenue
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King of Prussia, PA 19406 s
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