ML20086F890
| ML20086F890 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 11/17/1975 |
| From: | Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20086F888 | List: |
| References | |
| AO-75-74, NUDOCS 8401090630 | |
| Download: ML20086F890 (1) | |
Text
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Peach Bottom At.omic Po O Station Delta, Pen n sylvstri a 17314 November-17, 1975 Mr. James P.
O'Rei11y, Director Office of Inspection and Enforcement
,R 6t'(( \\W424//J74L6 Region 1 United States Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406
Subject:
Abnormal occurrence 2h-Hour Notification Confirming R.
S.
Fleischmann's verbal conversation with Mr. Walt Baunack, Region 1, United States Nuclear Regulatory Commission on November 17, 1975
Reference:
License Number DPR-hh Technical Specification
Reference:
Table 3.2.B Report No.:
50-277-T5-74 Report Date:
November 17, 1975 Occurrence Date:
November 16, 1975 Facility:
Peach Bottom Atomic Power Station R.D.
1, Delta, Pennsylvania 17314 Identification of Occurrence:
Setpoint of RCIC steam supply line high temperature switch, TE-TS h939A, found to be less conservative than allowed by the Technical Specificationg Conditions Prior to Occurrence:
Unit 2 shutdown, reactor vessel head removed for scheduled outage work.
Description of Occurrence:
During a routine instrument surveillance test the setpoint of TE-TS h939A van found to have drifted 2 F above the Technical Specification's limit of 200 F.
Designation of Apparent Cause of Occurrence:
Slight setpoint drift.
Analysis of Occurrence:
Since the reactor vessel was depressurized (vessel head removed) and the cetpoint drift was slight, this occurrence has minimal safety implications.
Corrective Action:
The switch was immediately recalibrated and returned to service.
Failure Data:
None previous.
Very truly yours,
/&rc V.
T.
Ullrich, Superintendent Peach Bottom Atomic Power Station ble 8401090630 751126 PDR ADOCK 05000277 g
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