ML19270H068

Responds to IE Bulletins 78-12,12A & 12B Re Reactor Pressure Vessel Welds.No Discrepancies Noted

ML19270H068
Person / Time
Site:	Grand Gulf
Issue date:	05/11/1979
From:	Cohn W GENERAL ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
NUDOCS 7906220462
Download: ML19270H068 (3)

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h" e47j;3 GENER AL h ELECTRIC

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ENGINEERING GENERAL ELECTRIC COMPANY,175 CURTNER AVE., SAN JOSE, CALIFORNIA 95125 DIVISION

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May 11, 1979 M

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Subject:

RESPONSE TO NRC IE BULLETIN NO. 78-12,78-12A and 78-12B

Reference:

Reactor Pressure Vessel: Grand Gulf I Gentlemen:

In compliance with subject bulletin, General Electric NESG requested Chicago Bridge and Iron Nuclear Conpany (CBIN) to conht a records investi-gation of low alloy, high tensile weld deposits used in all reactor pressure vessels built in their, or their supplier's, facilities.

The purpose of this investigation was to identify any other atypical weld deposit similar to the one described in Bulletin 78-12.

In response to our request, CBIN has prepared a report and submitted it to the NRC, as evidenced by the attached letter dated May 1,1979.

The report contains the attached certification dated 4/30/79.

We have reviewed CBIN's report to the NRC and have not found any discrepan-cies. Consequently, we concur with their certification and conclude that deposits)y unlikely that other, similar conditions (i.e., atypical weld it is ver exist in any reactor pressure vessel welds.

CBIN, in a separate comunication to us, has stated that they do not have any archive material. Consequently, we are requesting that you review your inventory and advise the NRC accordingly (Bulletin 78-12, Item 4).

We reconmend that you use this letter and the attached certification to satisfy the NRC request for verification of the generic search as outlined in IE Bulletin 78-12. Item 2.

Very r ly your

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. Co n, %Hiager Quality Control Engineering 7 9 0 6 2 2oy62 Vessels, Internals & Heat Exchangers M/C 731 - Ext. 56751 f OWICIALCOPY gs

GENERAL h ELECTRIC

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ENGINEERING GENERAL ELECTRIC COMPANY,175 CURTNER AVE., SAN JOSE, CALIFORNIA 95125 D1YlSION May 11, 1979

Subject:

RESPONSE TO NRC IE BULLETIN NO. 78-12,78-12A and 78-12B

Reference:

Reactor Pressure Vessel: Grand Gulf II Gentlemen:

In compliance with subject bulletin, General Electric NEBG requested Chicago Bridge and Iron Nuclear Conpany (CBIN) to conduct a records investi-gation of low alloy, high tensile weld deposits used in all reactor pressure vessels built in their, or their supplier's, facilities ~.

The purpose of this investigation was to identify any other atypical weld deposit similar to the one described in Bulletin 78-12.

In response to our request, CBIN has t.repared a report and submitted it to the NRC, as evidenced by the attached letter dated May 1,1979. The report contains the attached certification dated 4/30/79.

We have reviewed CBIN's report to the NRC and have not found any discrepan-cies. Consequently, we concur with their certification and conclude that it is very unlikely that other, similar conditions (i.e., atypical weld deposits) exist in any reactor pressure vessel welds.

CBIN, in a sr.parate comunication to us, has stated that they do not have any archive material. Consequently, we are requesting that you review your inventory and advise the NRC accordingly (Bulletin 78-12, Item 4).

We recomend that you use this letter and the attached certification to satisfy the NRC request for verification of the generic search as outlined in IE Bulletin 78-12, Item 2.

Very t u y yours 2346 i20

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t-A o n, Manager Quality Control Engineering Vessels, Internals & Heat Exchangers M/C 731 - Ext. 56751 9s

..,I UCLEAR OMPANY 2700 CH ANNEL AVENUE / fAEMPHIS. TENNESSEE 38113 / 1901) 947 3111 The documentation and information required by NRC Bulletins 78-12 and 78-12A for CBIN CONTRACT #73-C109 Vessel Grand Gulf I are contained in the attached report.

Welding consumables were re-reviewed against the original require-ments in accordance with the above listed documents.

No deviations were found.

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Based upon our records, I certify, to the best of my knowledge, this report is correct.

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Oehlkers Date NQA Coordinator CBI Nuclear Company 2346 321

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UCLEAR OMPANY 2700 CH ANNEL AVENUE / MEMPHIS, TENNESSEE 38113 / 1901) 947 3111 The documentation and information required by NRC Bulletins 78-12 and 78-12A for CBIN CONTRACT #73-C110 Vessel Grand Gulf II are contained in the attached report.

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Welding consumables were re-reviewed against the original require-ments in accordance with the above listed documents.

No deviations were found.

Based upon our records, I certify, to the best of my knowledge, this report is correct.

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G. OehlRers Date NOA Coordinator' CBI Nuclear Company 2346 422 0

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'.l May 1, 1979 U. S. Nuclear Regulatory Commission Attn:

Mr. G.

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Reinmuth, Assistant Director Nuclear Regulatory Committee Reactor Construction Inspection Division Bethesda HD 20555 RE:

WELD WIRE DATA REPORT REQUIRED BY UUCLEAR REGULATORY BULLETIN 78-12, DATED 9/29/78 AND SUPPLEMENT 78-12A, DATED 22/14/78 Gentlemen:

Enclosed is the CDI Nuclear Co. report required by the referenced HRC Bulletin 78-12.

This report covers the following reactor vessel as indicated below:

CDIN C.E.

CBIU G.E.

COUTRACT 4 PROJECT CONTRACT 4 PROJECT 72-2046 LaSalle II 73-C119 TVA X17 72-2505 Hope Creek II 73-C120 Allens Creek I 72-2647 Hanford II 73-Cl21 TVA X19 72-C102 Nine Mile II 73-C123 TVA X18 73-C108 Perry I 73-C125 Skagit I 73-C109 Grand Gulf I 74-C127 TVA X20 73-C110 Grand Gulf II 74-Cl29 River Rend II 73-C112 River Bend I 74-C131 TVA X21 73-Cll4 Perry II 74-C132 TVA X22 Should you have any questions, please do not hesitate to call.

Very truly yours, i

2346 (23 W.

G.

Dehlkers HOA Coordinator WGO:pwg

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