ML19345F566

Part 21 Rept Re Failure of Tack Weld on Pacific Air Products Co Automatic Air Damper,Initially Reported on 800912.Existing Weld Will Be Ground Out & Rewelded

ML19345F566
Person / Time
Site:	Grand Gulf
Issue date:	01/23/1981
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-81-352-000 10CFR-50-55E, AECM-81-41, PT21-81-352, PT21-81-352-000, NUDOCS 8102180422
Download: ML19345F566 (4)

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, P. O. S O X 13 4 0, J A C K S O N. M I S S I S S I P P I 3 ' 0 5 JAMES P. McGAUGHY, JR.

awsuur wca mseen January 23, 1981 t

Office of Inspection & Enforcement U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W.

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

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-41 ^ /417 File 0260/15525/15526 PRD-80/57, Status Report No. 2, HVAC Auto =atic Dampers AECM-81/41

Reference:

AECM-80/254, 10/13/80 On Septe=ber 12, 1980, Mississippi Power & Light Company noti-fled Mr. M. Hunt of your office of a Potentially Reportable Defi-ciency (PRD) at the Grand Gulf Nuclear Station (GCNS) construction site. The deficiency concerns the failure of a tack weld on a safety related auto =atic air damper supplied by Pacific Air Pro-ducts Company.

We are continuing to work with the con,structor to determine-the reportability of this item under 10CFR50.55(e) and 10CFR11,.

Our Status Report No. 2 is attached. We expect to file our final report on this =atter by July 29, 1981.

Please note that although this report was due on January 21, 1981, our T. E. Reaves, Jr. obtained :n c : tension until this date l from your Mr. Jack Bryant by telephone on 1/21/81.

Yours truly, g J. P. McGaughy, Jr.

CWH:mt Attachment cc: See page 2 Member Middle South Utilities System

MISSISSIPPI POWER O LIGHT COMPANY i

Mr. J. P. O'Reilly AECM-81/41 NRC Page 2 cc: Mr. N. L. Stampley Mr. R. B. McGehee Mr. T. B. Conner Mr. Victor Stello, Director Division of Inspection & Enforcement U. S. Nuclear Regulatory Com=ission Washington, D.C. 20555 Mr. G. B. Taylor South Miss. Electric Power Association P. O. Box 1589 Hattiesburg, MS 39401 1

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.. .[ Attachm;nt to AECM-81/41 Pegs 1 of 1 STATUS Rt/ ORT NO. 2 FOR PRD-80/57 I. Descriptien of the Deficiency The tact weldontheshaftofasafethrelatedautomaticair dzsper failed during an attempt to open the ; e. The tack wr onnects the shaft to the blade brack- rna. dampers are iX77FOCIA-A and QlX77F003-C in the Sc 2 guard Svitchgear and 3attery Rooms Ventilation System (X77). T!tse dampers were supplied by Pacific Air Products Compans eer Bechtel Specification No. 9645-M-617.1.

II. Plans for Resolving the Deficienev Mississippi Power & Light Company is working with the construc-tor to evaluate the deficiency for reportability under 10CFR 50.55(e) and 10CFR21. The following steps will be performed and tracked under Bechtel Quality Action Request (QAR) No.

F-234 to ensure that this ite= is adequately resolved:

1. Evaluate the deficiency for effect on safety of plant operations;

2. Deter =ine the extent of the deficiency; and

3. Perform corrective actions, including actions to prevent recurrence.

III. Status of the Proposed Resolution The constructor is still investigating the condition. However, since our initial report, eleven other similar failures have been documented. Remedial action will be to grind out the existing weld and reweld. This renedial action is currently underway. Determination of cause and actions to prevent recur-rence are still in progress.

IV. Reason for Delay in. Final Reporr Investigative efforts are not complete.

V. Final- Report -Date -

We expect to file our final report by July 29,.1981.

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