ML17244A694

Forwards Response to IE Bulletins 78-12 & 78-12A, Records Investigation Rept Re Off-Chemistry Welds in Matl Surveillance Specimens & Responses to Bulletin 78-12&78-12A Suppl. Concludes Crystal River 3 Isolated Event

ML17244A694
Person / Time
Site:	Crystal River, Ginna
Issue date:	03/13/1979
From:	Taylor J BABCOCK & WILCOX CO.
To:	Reinmuth W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
Shared Package
ML17244A692	List: ML17244A691 ML17244A694
References
NUDOCS 7907230493
Download: ML17244A694 (6)

Text

I Babcock ~V~ilco"  ! Power Generation GroUp P.O. Box 1260, Lynchbur 8, Va. 24505 Telephone: (804) 384-5111

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.March 13, 1979 Mr. Payne G. Re'inmu'th" ~.s.'-c, f

Of ic e o f Inspection and 'n f ore ement U. S; Nuclear Regulatory Commission Nashington, D.C.. 2055$

Subject-: Response to IE Bulletin Nos., 78-12 and 78-12A'ear Nr Reinmuth Enclosed for your information are three (3) copies of'ur report entitled, "Records Investigation Report Related'o Off-Chemistry Nelds in i~faterial Surveillance Specimens and.

Resppnses to Bulletin 78-12. and.78-12A Supplement", which we have prepared for. our customers in order to facilitate their .

responses to the bulletins. The report is basically divided into three (3) parts: (1) an introduction and. summary of the..............

weld, wire issue; (2) 'general information to support. the con-clusions we have reached; and (3) specific responses to the information requested by the bulletins. Appendices containing copies. of BIN chemical analysis requirements and weld filler wire qualification tests are included as supporting information.

The information in the appendices has been selected based on your request. at a January 16, 1979 meeting in Nt. Vernon, Indiana.

This report. describes the investigations that vere made as a result of discovering an off-chemistry condition in a reactor vessel surveillance specimen for the Crystal River 3 (CR-3)

Project. The purpose of the records investigation was to

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determine the cause and extent of the mixed weld. wire problem.

. The investigation also included a review of test results from

.actual reactor vessel production weld. seams to the extent these welds could be investigated, and from reactor vessel surveillance through November 1978. 'n material tests. The investigation covered the period from 1966 accordance with IE Bulletin 78-12A, our response is given on a generic basis and ao attempt was made to correlate specific weldments with heats of filler wire.

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The records investigation,.provides considerable support for the hypothesis that- the. presence of atypical chemistry condition in the Crystal River 3 surveillance'lock is an isolated event.

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involving a small 'amount. of. material in one heat of wire.

. The general: conclusion reached'as a result'of the investi-

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gation of the atypical weld wire discovery is that unlikely that other simil'ar conditions:exist in any reactor it is very pressure vessel welds. Furthermore, the shop practices which have evolved over the years and which are currently in effect virtually eliminate the possibility that a vessel fabricated today might. contain off-chemistry weld materials.

ESIyou have any questions concerning the enclosed material, please. contact me (Ext. 2817) or Nilliam R. Speight (Ext. 2902) oS my staff-.

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Very truly .yours James H., Taylor I I

. Manager Lace JET/ZN

cc:. R., B;, Borsum - B4N Rep. Bethesda Office. 1183Jlg'nclosures:

As. stated

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Babcock:.wilcox Power Generation Group

, P.O. Box 1260, t.ynohburg, Va. 24505 Telephone: (804) 384-5111 March'3, 1979 .

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westinghouse Nuclear Ener'gy Systems (

Monroeville Nuclear Center, Northern Pike. Road ... '; .:- .:

• Yanroevil le, Pennsyl vanTa 15146 Attn: Hr. G.. M. Larrb Sub': Response to NRC IE Bulletin No. 78-.12 & 12A

.Gentlemen!

E'nclosed for your information are three (3) copies of a report entitled, "Records Investigation Report Related to Off-Chemistry Melds in Material Surveillance Specimens and Response to Nuclear Regulatory Corrmission IE Bulletin No. 78-12 & Supplement No.78-12A.."

The information, presented in this report re'presents an intensive records investigation which includes the following reactor pressure vessels and closure heads manufactured specifically for Mestinghouse.

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8&M Contract No. -Mestin house Purchase Order No.

610-0110 Ro~> <( c r aiba 54-F"49758" SP 610-0115 'paw r 8~< ~ I 54-g-55180-BP t2 ~""

610-0116 610 0116 f1) ~~ Pa'~p.,~. 54-g-61741-BP 54 g 61742 BP 610-0144- 54-g-70140-BP

'10-0152 '4-g-70141-SP 640-0001 546-CVJ-150100-SP 640-0002 546-CVD-150101-BP 640-0004 546-CYJ-161057 640-0005 546-CYQ-161058 640-0012 ,

546-CYJ-195410- BP

. 640-0014 546-CY 0-195411-B P 640-0016, 6 40-00 17 546-CY0-195412-BP 546 CYJ 161Q62 BN plans to submit the report to NRC by March 23, 1979.

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Very truly'yours,

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~ Panager, James H .. Tay1

.Li censing

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