ML20030C082
| ML20030C082 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 05/28/1981 |
| From: | Abercrombie H TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| RO-81-028-01P, RO-81-28-1P, NUDOCS 8108250376 | |
| Download: ML20030C082 (1) | |
Text
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TELEC31( TO REC g.g.g.; g, rim try 28,1981
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U. S. Mir. lear Regulatory Cosutission Region II
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Reported under Technical Specificativa 6.7.2. A (5) b
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Date of occurrence:
5/27/81 Time of Ocetzrrence:
1415 hrs.
Unit 2 Techa.ica.1 Specification Involved! Tabic 3.1.A Conditions Prior to Occurrenco Unit 1 in ref witng outage: unica 2 and 3 in normi operatico at 1,083 sud 1,055 We, respectively.
1 Identification and Description of occurrence During routine surveillance testing (Surveillance Instruction 4.1. A.14) turbine first-stage pe_ruissive switches PS-1-81A and B. and PS-1-91A and B were found above technical specification limits. The greatest out of tolerance was 5.9 percent.
Apparent _Ca_use of Occurrence Setpoint drift.
Other Ec1Ated events BFRO-50-259/7908, -260/7916, -296/7907, and -259/8058.
Cor'rective__ Action Taken or Planned Setpoints were reset to the proper value, and the surveillance instruction coupleted satisfactorily. Additionally, a design ebange request (DCR 1398) has been initiated to replace these svitt.has with an analog transmitter with a trip switch.
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M L. Aberer le Power Plant Superintendent 3
Browns Ferry Nuclear Plant 5
)D 8108250376 810528 PDR ADOCK 05000260 S
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