ML16340D380

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Board Notification 83-72:forwards Info Item Re Potential Violation of Min Wall Thickness on RCS Pipe at Facility. Region V Currently Examining Licensee Response to Incident
ML16340D380
Person / Time
Site: Diablo Canyon 
Issue date: 06/20/1983
From: Eisenhut D
Office of Nuclear Reactor Regulation
To: Ahearne J, Gilinski V, Palladino N
NRC COMMISSION (OCM)
Shared Package
ML16340D381 List:
References
TASK-AS, TASK-BN83-072, TASK-BN83-72 BN-83-072, BN-83-72, NUDOCS 8305110486
Download: ML16340D380 (6)


Text

Docket Nos.:

50-275 50-373 MEt<ORANDUtl FOR:

Chairman Pal 1 adino Commissioner Gilinsky Commissioner Ahearne Commissioner Roberts Commissioner Asselstine FROM:

SUBJECT:

Darrell G. Eisenhut, Director Division of Licensing Office of Nuclear Reactor Regulation INFORl/IATION ITEN REGARDING POTENTIAL VIOLATION OF MINIMUM WALL THICKNESS ON REACTOR COOLANT SYSTEII PIPE AT DIABLO CANYON, UNIT 1 (Board Notification Ho. 83-72)

In accordance with present NRC procedures for Board Notifications, the following items are enclosed for information of the Commission:

1.

Pacific Gas 8 Electric Company's letter dated Nay ll, 1983 2.

Preliminary Notification - PNO-V-83-22 dated Nag 11, 1983 The enclosures provide information pertaining to one weld in the Diablo Canyon, Unit 1 reactor coolant loop two cold leg between'he reactor coolant pump and the reactor vessel that may be less than the minimum wall thickness specified by the ASIIE Code.

Region V is currently examining the licensee's response to this incident.

We will promptly inform you of any significant findings on this matter.

The board and parties have been notified of this

,information.

Enclosure:

As stated cc w/encl:

See next page 8305110486 Darrell G. Eisenhut, Director Division of Licensing Office of Nuclear Reactor Regulation L

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DISTRIBUTION LIST FOR BOARD NOTIFICATION Diablo Canyon Units 182 Docket Nos.

50-275/323 OL ACRS Members Ns. Elizabeth Apfelberg Nr. Richard E. Blankenburg Mr. Glenn 0. Bright Nr. Herbert H. Brown Dr. John H.

Buck Philip A. Crane, Jr.,

Esq.

Mr. Frederick Eissler David S. Fleischaker, Esq.

Mrs.

Raye Fleming Arthur.G:-Gehr, Esq.

Mr. Mark Gottlieb Mr. Thomas H. Harris Mr. Richard B. Hubbard Dr.

W.

Reed Johnson Janice E. Kerr, Esq.

Dr. Jerry Kline Nr. John Narrs Thomas S. Moore, Esq.

Bruce Norton, Esq.

Joel R. Reynolds, Esq.

Mr. James

0. Schuyler Mr, Gordon Silver Michael J. Strumwasser, Esq.

Paul C. Valentine, Esq.

Har.ry N. Willis John F. Wolf, Esq Atomic Safety and Licensing Board Panel Atomic Safety and Licensing Appeal Panel Nr.. Vialcolm H. Furbush Resident Inspector/Diablo Canyon NPS Dr. William E. Cooper Nr.

W.

C. Gangloff Mr. Owen H. Davis Dr. Jose Roesset Dr. Robert C. Axtmann Nr. Nyer Bender Dr. Max W. Carbon Mr. Jesse C. Ebersole Mr. Harold Etherington Dr. William Kerr Dr. Harold W. Lewis Dr. J.

Carson Mark Mr. William N. Mathis Dr. Dade W. Moeller Dr. David Okrent Dr. Milton S. Plesset Mr. Jeremiah J.

Ray Dr. Paul C.

Shewmon Dr. Chester P. Siess Mr. David A. Ward

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