ML19308D758

Confirms 780814 Telcon Re Possible Use of Atypical Weld Filler Wire.Requests Info Re Interim Measures,Operational Safety Assessment & Commitment to Maintain Interim Measures Pending Resolution of Issue

ML19308D758
Person / Time
Site:	Crystal River
Issue date:	08/14/1978
From:	Reid R Office of Nuclear Reactor Regulation
To:	Stewart W FLORIDA POWER CORP.
References
TAC-08884, TAC-8884, NUDOCS 8003130757
Download: ML19308D758 (3)

Text

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L PDR AUGUST 1 4 1978 ORB #4 Reading RWReid RIn

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-TAbernathy JBuchanan Florida Power Corporation BGrimes/TCarter ATTN: Mr. W. P. Stewart Director

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Power Production Gray file P.O. Box 14042. Hail Stop C-4 St. Petersburg, Florida 33733 Gentlemen:

RE: REACTOR VESSEL ATYPICAL WELD MATERIAL This letter confirms our telephone conversation with your staff of August 14, 1978.

The NRC was advised by Babcock & Wilcox (B&W) on August 4,1978, that a chemical analysis of an archive wendment performed as part of the program for evaluation of reactor vessel material properties indicated 1

that the nickel and silicon content of the weld material were outside the

.specified range. It has been detemined that the weld filler wire used for that particular Wld was atypical.

As of this date, it is not known whether or not this atypical weld wire was used in the manufacture of your reactor vessel. Therefore, we request-that you provide the following information to us by Friday, August 18, 1978 (a telecopy of your signed response is adequate):.

1.

What interim ocasures, such as revised pressure / temperature l'imits, you are taking to ensure reactor vessel integrity in the event that the atypical weld wire was used, 2.

Your assessment as to the continued safe operation of your facility based on these, interim measures, and fff f

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Your cormitment tnat these measures will continue in forr.e pending the resolution of this issue.

Your submittal should be three signed originals plus 37 additional copies.

Sincerely, Robe' t it. Reid, Chief j

r Operating Reactors Bri.nch 44

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Florida Power Corporation ec: Mr. S. A. Brandimore Vice President and General Counsel

r. O. Box 14042 St. Petersburg, Florida 33733 Crystal River Public Library Crystal River, F1.orida 32629 e

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