ML20009F669

Ro:On 810629,during Refueling Outage,Ultrasonic Test Insp Revealed Reactor Water Cleanup Sys Inboard Primary Containment Isolation Valve Indication.Cause Unknown. Indication Will Be Removed & Weld Repaired

ML20009F669
Person / Time
Site:	Browns Ferry
Issue date:	06/30/1981
From:	Abercrombie H TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
NUDOCS 8107310395
Download: ML20009F669 (1)

Text

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June 30. 1981 CO-151 OFF!cfg g ,

6 REG!ONAL DIRECTC.t U. s. muclear nesulatory comatssion. DEPUTY DIRECTOR nasi== II ASSSTANT TO DIRECTOk tot unrietta street. W T DIRECTOR, RRPI Suit = N At14=ce. coorsia 30303 i e.

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maported under Tecimical Specification 6.7.QM Date of Occurrence: 6/29/81 Time of Occurrence: 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> Unit 1 Technical Specification involved: 3.6.C Conditions Prior to occurren_ce Unit 1 in refueling outge; units 2 and 3 La nonesi operation at 1.081 We and 1.016 We, respectively.

3dmitification and Description of OccxxrTence Reactor water claamp system inboard primary contaimment isolation valve 69-1 was initially ultrasonically inspected on 6/21/81, and an indication was observed. The valve was subsequently radiographed and showed no indications. A level II laspector perforined a UT inspection on the valve on 6/24/81 and confirmed an indicatina.

Follouring this confirmation, an engineering evaluation was performed and a decision reached to replace the valve or repair the indication. The ensimeering evaluation confimed the indication was acceptable under the Summer 1978 4AA- A= to AstE 5ection Il Code.

Appermaac causes of Occurrence Ordmon#n er this time.

Other Eelated Events sP30- D 259/so4 corrwet (we Act h, taken or planned the indication will be removed and the weld repaired or the valve vill be replaced duriag this refueling outsge.

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/d/W .x E. L. Abercrombie Foger Flaat Superintendent arouna Ferry maclear Plant h/g 8107310395 810630 <

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