ML19330C029

Final Deficiency Rept Re Erroneous Output Readings in Model 1151A Pressure Transmitters Supplied by Rosemount,Inc. Transmitters Will Be Replaced.Further Corrective Actions Will Be Summarized in Bechtel Rept,GGNS-72

ML19330C029
Person / Time
Site:	Grand Gulf
Issue date:	07/22/1980
From:	Julie Ward BECHTEL GROUP, INC., BECHTEL POWER CORP.
To:
Shared Package
ML19330C025	List: ML19330C024 ML19330C029 ML19330C034
References
IEB-80-16, VB-80-0268, VB-80-268, NUDOCS 8008070440
Download: ML19330C029 (2)

Text

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<"> Bechtel Power Corporation Engineers-Constructors 15740 Shady Grove Road Gaithersburg, Maryland 20760 301-258 3000 .

u G2, r:r July 22, 19s0 JUL 2 81980 Of fice of Inspection & Enforcement cc:wce[.

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U.S. Nuclear Regulatory Cocsission Region II 101 Marietta Street, N.W .

Suite 3100 Atlanta , Georgia 30303 Attention: Mr. J. P. O 'Reilly , Director

Dear Mr . O 'Re illy :

Nuclear QA Is Applicable Middle South Energy, Inc.

Grand Gulf Nuclear Station Bechtel Job No. 9645 File: 0260/0512 Final Re port for Bechtel Power Corporation Deficiency Report No. J-80/01 in Compliance with 10CFR 21' V3-80/0268 Our letter of April 24, 1980, forwarded to you , in accordance with 10CFR Part 21, a report of a deficiency at the Grand Gulf Nuclear Station concerning Fase=ount 1151A pressure transmitters. Our letter also stated that we are investigating -

the matter and would report further within 90 days .

Since that time , your of fice has issued IE Bulletin No. 80-16 which identifies the Rosemount 1151A pressure transmitter problem.

On the Grand Gulf Nuclear Station, further investigation has revealed that there are ten (10) each Rosemount ll51A transsitters on Unit 1 and Unit 2 purchased by the Bechtel Power Corporation which are basic cesponents and =ay produce erroneous outputs when over-ranged or under-ranged in their present applications. Our corrective action will consist of replacing these transmitters with new transmitters

.t.ich do not have this same ambiguous characteristic in the, over-range and under-range condition , and which are qualified in accordance with IEEE 223-1974 and 1EEE 344-1975. Further details of the follow-up action specific to the Grand Gulf Nuclear Station (GCNS) will be su-=ari:ed in Bechtel Management Correc tive Ac tion Re po rt , GGNS-72 and will be available for your review at tha CGNS construction site , i For other Eechtel Power Corporation projects with construction per=its , f urther reports will be provided to you in response to IE 3ulletin 30-16.

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Bechtel Power Corporation  ;

U.S. Nuclear Regulatory Com::21ssion July 22 1980 Bechtel Job No. 9645 VB-50/02'68 This completes our response to the reporting requirements of 10CFR 21.

Should you require any additional info:mation, please so advise.

Very truly yours ,

J. . Jar P oject Manager JCClub b ec: J. 'P. McGaughy , Jr.

fil L. F. Dale , 2 C. K. McCoy -

T. H. Cloninger J J . Reaves A. Zaccaria J. M. Kocies B. K. Kanga Dr. D. C. Gibbs R. A. O 'Neil L. E. Ruhland D. M. Lake R. E. Brosm .

R. L. Scott

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