05000260/LER-1979-008, Forwards LER 79-008/01T-0

Forwards LER 79-008/01T-0

ML18024A809
Person / Time
Site:	Browns Ferry
Issue date:	05/18/1979
From:	Fox H TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024A810	List: 05000260/LER-1979-008, Forwards LER 79-008/01T-0 05000260/LER-1979-008-01, /01T-0 on 790504:while Preparing for Refueling Outage,Secondary Containment Integrity Was Not Conclusively Demonstrated Prior to Breaking Primary Containment.Test Improperly Performed Due to Personnel Error
References
NUDOCS 7905310362
Download: ML18024A809 (5)

LER-1979-008, Forwards LER 79-008/01T-0

Event date:
Report date:
2601979008R00 - NRC Website

text

May 18, 1979 TENNESSEE VALLEYAUTHORITY CHATTANOOGA. TENNESSEE 31401 716 Ednoy Building Hr. J

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H ear gula ry Commission Offic of Xnsp ct n and Enfoxcement Regi n XI 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 Doer Hr. O'Railly!

TENNESSEE VALLEYAUTHORXTY-BROffNS PERRY NUCLEAR PLANT UHXT 2 DOCKET HO. 50 260 PACXLITY OPERATING LICENSE DPR REPORTABLE OCCURMSCE REPORT BFRO 50-260/798 The enclosed report provides details concerning secondary containmont integrity ahich +as not conclusively demonstrated prior to bxeahing primary containment while prepaxing for a refueling outage.

This report is submitted in accoxdance with Bras Perry unit 2 Technical Specification 6+7 ~2ia.6.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. S.

Pox Dix'actor of Power Px'oduction Enclosure (3) cc (Enclosure)!

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission washington, D.C.

20555 Dixaetor (40)

Office of Xnspeetion and Enfoxcoment U.S. Nuclear Regulatory Commission IIashington, D.C.

20555 R. F. Sullivan, HRC Inspector, Brothe Parry REGULATORY DOCI(LT RLP (Opy q 905310K u An Equal Opportunity Employer

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79g 'echnical Specification Involved 3 7.C l and 3.7.0 3

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Reported Under Technical Specification Date of Occurrence

/"/ 'ime of Occurrence Unit Identification and Descri tion of Occurrence:

While preparing to refuel, secondary containment integrity was not conclusively demonstrated prior to breaking primary containment.

Conditions Prior to Occurrence:

Refueling outage.

Action specified in the Technical Specification Surveillance Requirements met due to ino erable e ui ment.

Describe.

Fuel movement not permitted.

A arent Cause of Occurrence:

The test to demonstrate secondary integrity was improperly conducted due to a combination of personnel error and procedural inadequacy.

The surveillance instruction, required to prove that the s'tandby gas treatment system could maintain one-quarter inch of water vacuum with a system in. leakage of not more than 3.2,000 cfm, contained incorrect data for the. condition specified.

Anal sis of Occurrence:

Theqe was no hazard to the public health or safety.,

Corrective Action

When the error in the data was discovered, fuel handling was immediately stopped and adequate secondary containment was verified.

The surveillance test is being revised for clarity.

A. two-party check is being added to the master refueling test instruction.

0 Failure Data:

None previous.

Tennessee Valley Authority - Browne Ferry Nuclear Plant

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