05000296/LER-1979-011, Forwards LER 79-011/03L-0

Forwards LER 79-011/03L-0

ML18024A998
Person / Time
Site:	Browns Ferry
Issue date:	09/11/1979
From:	Calhoun J TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18024A999	List: 05000296/LER-1979-011, Forwards LER 79-011/03L-0 05000296/LER-1979-011-03, /03L-0:on 790808,during Normal Operation,Torus Vacuum Breakers Had Setpoints Exceeding Tech Spec Limits. Caused by Barton Model 289 Switches Drifting Out of Tolerance.Switches Readjusted
References
NUDOCS 7909140372
Download: ML18024A998 (2)

LER-1979-011, Forwards LER 79-011/03L-0

Event date:
Report date:
2961979011R00 - NRC Website

text

TENNESSEE YALLEYAUTHORITY CHATTANOOGA. TENNESSEE 3740]

716 Edney Building September 3,j., 1979 Mr. James P. O'Reill +Director

'.S.,Nuclear Regul ory Commission Office of Inspec on and Enforcement, Region XI 101 Marietta tract, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

TENNESSEE VALLEY AUTHORITY - BROMNS FERRY NUCLEAR PQLNT UNIT 3 DOCKET NO. 50-296 - FACILITY OPERATXNG.LICENSE DPR REPORTABLE OCCURRENCE REPORT BFRO-50 296/7911 The enclosed report provides details concerning pressure svitches PS-64-20 and PS-64-21, reactor building to torus vacuum breakers, vhich vere found to have setpoints which exceeded Technical Specification, 3.7.A.3.a limits during normal operation vhile performing Surveillance Instruction 4.7.A.3.a.

This report,is submitted in accordance with Browne Ferry unit 3 Technical Specification 6.7.2.b(1).

Very truly yours,

~

TENNESSEE VALLEY AUTHORITY J.

R. Calhoun Director of Nuclear Power Enclosure (3) cc (Enclosure)'

Director (3)

Office of Management Xnformation and Pr gram Control U.S. Nuclear Regulatory Commission Washington, D.C.

20555 Director (40)

Office of Xnspection and'nforcement U.S. Nuclear Regulatory Coamiission Washington, D.C.

20555 R. F. Sullivan, NRC Xnspector, Browne Ferry r 909>< 01 X An Equal Opportunity Employer h

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