ML19330C722

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Significant Deficiency Rept SD-370/80-07 Re Duke Class E Valve Erroneously Assigned to Application Requiring Duke Class B Valve.Cause Not Stated.Qualified Duke Class B Valve Installed
ML19330C722
Person / Time
Site: Mcguire
Issue date: 08/04/1980
From: Parker W
DUKE POWER CO.
To:
References
SD-370-80-07, SD-370-80-7, NUDOCS 8008110387
Download: ML19330C722 (2)


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O U K E Powe n Co>m.u:Y Powna Drawixo 400 SocT:s Car cucir STunnT. Cir.wr.oTTE. N C. 2na.u

.u m a m en.a. August 4, 1980

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,* La e 4.ihC 'ose 3 3 + 40 9 3 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Cor=ission Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 _-

4 dIHIS g DOCUMENT CONTAINS Re: McGuire Nuclear Station i Unit 2 Docket No. 50-370

Dear Mr. O'Reilly:

Pursuant to 10C7R 50.55e please find attached Significant Deficiency Report SD 370/80-07.

ery

, truly yours, .

O

/,u.m_ G. c k William 0. Parker, Jr. /

LJB:ses Attachment cc: Director Mr. T. J. Donat Office of Inspection & Enforcement NRC - McGuire Nuclear Station U. S. Nuclear Regulatory Commission Washington, D. C. 20555

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v DUKE POWER COMPANY MCGUIRE NUCLEAR STATION Report Number: SD 370/80-07 Report Date: August'4,'1980 Facility: McGuire Nuclear Station Unit 2 Identification of Deficiency: Hydrogen Purge System Valve Misapplication Description of Deficiency:

The following deficiency was reported via telecon by W. H. Bradley and J. K. Berry to Mr. John Rausch of the NRC in Atlanta on July 3, 1980. When requisitioning a 1/2" diaphragm valve.from the Construction warehouse, it was-discovered that a Duke Class E (ANSI B31.1) valve had been erroneously assigned to an application requiring a Duke Class B (ASME III, Class) valve.

This Class E valve was not installed.

Analysis of Safety Implication: ,

Valve 2VE12 is used as a test line drain between containment isolation valves 2VE10A and 2VE11 on the Hydrogen Purge Valve System. Valve 2VE12 is located in the containment annulus area. A potential failure of valve 2VE12 coincident with failure of the inside containment isolation valve 2VEll or piping between isolation valves would provide a leak path for containment environment to-the

. atmosphere.

Corrective Action:

A qualified Duke Class 3 valve has been selected and installed for this application.

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