ML20003B646

Interim Deficiency Rept,Originally Reported on 800912,re Failure of Tack Well on safety-related Automatic Air Damper Supplied by Pacific Air Products Co.Determination of Cause & Corrective Actions in Progress.Final Rept by 810729

ML20003B646
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
10CFR-050.55E, 10CFR-50.55E, AECM-81-41, NUDOCS 8102250087
Download: ML20003B646 (3)

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MISSISSlPPI P.OWER & LIGHT COMPANY Helping Build Mississippi adMetudds P.,0 BOX 1640

~ m ea ,, e :go .JACKSON.MISSISSIPPI3 TE[Jr c[a s January !3, 1981 Office of Inspection & Enforcement W /s U. S. Nuclear Regulatory Commission ,- y ,f Region II g Vgg 101 Marietta Street, N.W. L- t Suite 3100 Atlanta, Georgia 30303 3 #8 6a % g2 3f [d F3 3 '%,% g8/ r .C Attention: Mr. J. P. O'Reilly, Director g  %%g [4

Dear Mr. O'Reilly:

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SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket Nos. 50-416/417 File 0260/15525/15526 PRD-80/57, Status Report No. 2, HVAC Automatic Dampers AECM-81/41

Reference:

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

We are continuing to work with the constructor to determine the reportability of this item under 10CFR50.55(e) and 10CFR21.

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

Please note that although this report was due on January 21,

1981, our T. E. Reaves, Jr. obtained an extension until this date I

from your Mr. Jack Bryant by telephone on 1/21/81.

Yours truly,

, W

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J. P. McGaughy, Jr.

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cc: See page 2 hS C"

810225oOM . .. . _ _

MISSISSIPPI POWER & LIGHT COMPANY 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 Commission Washington, D.C. 20555 Mr. G. B. Taylor South Miss. Electric Power Association P. O. Box 1589 Hattiesburg, MS 39401 i

AttachmInt to AECM-81/41 Page 1 of 1 STATUS REPORT NO. 2 FOR PRD-80/57 I. Description of the Deficiency The tack weld on the shaf t of a safety related automatic air damper failed during an attempt to open the blade. The tack weld connects the shaft to the blade bracket. The dampers 1 are Q1X77F001A-A and QlX77F003-C in the Safeguard Switchgear and Battery Rooms Ventilation System (X77). These dampers

. were supplied by Pacific Air Products Company under 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 item is adequately resolved:

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

2. Determine 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 reveld. .This remedial-action is currently underway. Determination of cause and actions to prevent recur-rence are still in progress.

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

V. Final Report Date We expect to file our final report by July 29,.1981.

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