05000327/LER-1981-049, Forwards LER 81-049/03L-0

Forwards LER 81-049/03L-0

ML20004B021
Person / Time
Site:	Sequoyah
Issue date:	05/22/1981
From:	Green H TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20004B022	List: 05000327/LER-1981-049, Forwards LER 81-049/03L-0 05000327/LER-1981-049-03, /03L-0:on 810430,sample Isolation Valve for Containment Radiation Monitor 1-RM-90-106 Failed to Close on Spurious Containment Vent Isolation Signal.Caused by Limit Switch Failure.Switch Replaced
References
SQRO-50-327-810, NUDOCS 8105270122
Download: ML20004B021 (1)

LER-1981-049, Forwards LER 81-049/03L-0

Event date:
Report date:
3271981049R00 - NRC Website

text

0 TENNESSEE VALLEY AUTHORITY cH4 t14NCOGA. TENNESSEC 374ot 1750 Chestnut Street Tower II

/,b l/g May 22, 1981 g\\

@ [0re Mr. James P. O'Reilly, Director 6

N U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement 9 5-Region II 8

101 Marietta Street, suite 3100 Y' %.

Atlanta, Georgia 30303 N N ' l ' C'

Dear Mr. O'Reilly:

TENNESSEE VALLEY AUTHORITY - SEQUOYAH NUCLEAR PLANT UNIT 1 - DOCKET No. 50-327 - FACILITY OPERATING LICENSE DPR REPORTABLE OCCURRENCE REPORT SQRO-50-327/81049 The enclosed report provides details concerning the failure of a containment isolation valve to close when a radiation monitor spike initiated a spurious containment isolation. The valve's inoperability placed the plant in action statement "b" of limiting condition for operation 3.6.3.1 and is reported in accordance with Sequoyah unit 1 Tachnical Specifi-cation 6.9.1.13.b.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. J. Green Director of Nuclear Power Enclosure (3) cc (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, DC 20555 j

Director ('.0)

Office of Inspeccion and Enforcement 7

U.S. Nuclear Regulatory Commission Washington DC 20559 l

Mr. Bill Lavallee Nuclear Safety Analysis Center Palc Alto, California 94303 l

NRC Inspector, Sequoyah l

8105270 @

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