05000369/LER-1981-096, Forwards LER 81-096/01T-0.Detailed Event Analysis Encl

Forwards LER 81-096/01T-0.Detailed Event Analysis Encl

ML20009G027
Person / Time
Site:	McGuire
Issue date:	07/07/1981
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20009G028	List: 05000369/LER-1981-096, Forwards LER 81-096/01T-0.Detailed Event Analysis Encl 05000369/LER-1981-096-01, /01T-0:on 810624,Type C Leak Test Not Performed as Required for Bypass Leakage Paths on Penetration Used for Ice Loading.Caused by Not Being Listed in FSAR as Requiring Leak Test.Test Performed Satisfactorily
References
NUDOCS 8108030256
Download: ML20009G027 (2)

LER-1981-096, Forwards LER 81-096/01T-0.Detailed Event Analysis Encl

Event date:
Report date:
3691981096R00 - NRC Website

text

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L DUKE POWER COMPANY OPFidtAL COpt I

POWER UUILDING 4cc SocTu Citu ten STsuzT. CitAat.oTTE. N. C. 2e242

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,;. S a wlLLIAM O. PAR M ER, J R, ter PatsiotNY Tgtgomong; Anta 704 s.t.- Paoovewo July 7, 1981 us-*oes Mr. James P. O'Reilly, Director A9' 7cQ, A

U.S. Nuclear Regulatory Commission Region II

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fg f4 101 Marietta Street, Suite 3100 R

Atlanta, Georgia 30303 g

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Re: McGuire Nuclear Station Unit 1

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Docket No. 50-369

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Dear Mr. O'Reilly:

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4 Please find attached Reportable Occurrence Report R0-369 This report concerns Technical Specification 6.9.1.12F; " Personnel Error or Procedurst inadequacy which prevents or could prevent, by itself, the fullfilh nte of the Functional Requirements of Systems required to cope with cecidcats ana-i lyzed in the SAR." This incident was considered to be of no significance with respect to the health and safety of the public.

Ve y truly yours, 4

i I

William O. Parker, Jr.

PBN/pw t

Attachment i

i cc: Director Mr. Bill Lavallee Office of Management & Program And.ysis N:tclear Safety Analysis Center U.S. Nuclear Regulatory Commission P. O. Box 1041_

Washington, D.C.

20555 Palo Alto, CA 94303 Ms. M. J. Graham Resident Inspector - NRC i

McGuire Nuclear Station

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0 0108030256 810707 gDRADOCK 05000369 PDR

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McGUIRE NUCLEAR STATION INCIDENT REPORT Report Number:

81-96 Report Date: July 7, 1981 Occurrence Date: June 24, 198'..

Facility: McGuire Nuclear ' cation, Unit 1, Cornelius, N. C.

Identification of Occurreqce:

The penetration used for ice loading was not Type C leak tested.

Condition Prior to Occurrence: Mode 5, Cold Shutdown Description of Occurrence:

The penetration used for ice loading was blind flanged on both sides of the reactor building.

It was not Type C leak tested, and there-fore was reportable per Technical Specification 6.9.1.12(f).

Apparent Cause of Occurrence: The penetration did not appear in FSAR Table 6.2.4-2.

This table lists all containment penetrations which require a Type C leak test.

Analysis of Occurrence:

FSAR Table 6.2.4-2 lists all mechanical penetrations which require a Type C leak test.

Table 6.2.4-3 lists those penetrations which do not require a Type C leak test.

The ice condenser loading penetration, M394, was in-correctly listed in Table 6.2.4-3, and therefore was not tested.

Corrective Action

As soon as this problem was discovered, penetration M394 was given a Type C leak test which it passed.

In addition, it was added to the periodic test, " Isolation Valve Leak Rate Test".

All other penetrations were reviewed to ensure that there are ne further incidents of this kind.

The FSAR will also be changed to accurately reflect the testing requirements of this penetration.

Safety Analysis

This incident did not affect the health and safety of the public.

The penetration passed its Type C leak test, so it can be assumed that it was acceptable at the time all other penetrations were tested.