AECM-84-0237, Final Part 21 Rept for Unit 1 & Interim Deficiency Rept for Unit 2 Re Containment Personnel Air Lock Seismic Qualification Supplied by Wj Woolley Co.Initially Reported on 840416

Final Part 21 Rept for Unit 1 & Interim Deficiency Rept for Unit 2 Re Containment Personnel Air Lock Seismic Qualification Supplied by Wj Woolley Co.Initially Reported on 840416

ML20084G147
Person / Time
Site:	Grand Gulf
Issue date:	04/20/1984
From:	Mcgaughy J MISSISSIPPI POWER & LIGHT CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-84-225-000 AECM-84-0237, PT21-84-225-000, NUDOCS 8405070092
Download: ML20084G147 (6)

Text

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O MISSISSIPPI POWER & LIGHT COMPANY Helping Build Mississippi P. O. B O X 16 4 0, J A C K S O N, MISSISSIPPI 39205 l

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JAMES P. McGAUGHY, JR.

April 20, 1984 U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, N.W.

Suite 2900 Atlanta, Georgia 30303 Attention: Mr. J. P. O'Reilly, Regional Administrator

SUBJECT:

Grand Gulf Nuclear Station Units 1 and 2 Docket No. 50-416/417 License No. NPF-13 File 0260/15525/15526/16694.4 PRD-84/08, Final Report for Unit 1, Interim Report for Unit 2, Containment Personnel Air Lock Seismic Qualification AECM-84/0237 On April 16, 1984, Mississippi Power & Light Company notified Mr. R.

Carroll, of your office, of a Reportable Deficiency at the Grand Gulf Nuclear Station (GGNS). The deficiency concerns a failure of the vendor, W. J. Woolley Co., to seismically qualify the containment pneumatic supply system.

MP&L has evaluated this deficiency and has determined that it is reportable under the provisions of 10CFR21 for Unit 1. Reportability for Unit 2 is indeterminate at this time. Attached is the Unit 1 Final Report and Unit 2 Interim Report. An update is expected for Unit 2 by October 12, 1984.

Yours truly,

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E RDC:dr ATTACHMENT cc: See page 2 l 8405070092 840420 gDRADOCK0500o416 PDR 8ll Member Middle South Utilities System ZEil9

c Mr. J. P. O'Reilly AECM-84/0237 NRC Page 2 cc: Mr. J. B. Richard

. Mr. R. B. McGehee Mr. T. B. Conner Mr. Richard C. DeYoung, Director-Of fice of Inspection & Enforcement U. b. Nuclear Regulatory Commission Washington, D.C. 20555 Mr. G. B. Taylor South Miss. Electric Power Association P. O. Box 1589 Hattiesburg, MS 39401 4

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Attstchment to AECM-84/0237 Prge 1 of 3 FINAL REPORT FOR UNIT 1 FOR PRD-84/08 INTERIM REPORT FOR UNIT 2

1. Name and address of the individual ... informing the commission:

J. P. McGaughy, Jr.

Vice-President, Nuclear P.O. Box 1640 Jackson, Mississippi 39205

2. Identification of the facility ... which ... contains a deficiency:

Grand Gulf Nuclear Station (GGNS) Unit 1 Port Gibson, Mississippi 39150

3. Identification of the firm . . . supplying the basic component which ...

contains a deficiency:

The personnel air locks were fabricated by the W. J. Woolley Company, Oakbrook, Illinois, and supplied to Grand Gulf by Bechtel Power Corporation, Gaithersburg, Maryland.

4. Nature of the deficiency . .. and the safety hazard which . .. could be created by such a deficiency . . . :

A. Description of the Deficiency The containment personnel air locks consist of a cylindrical steel shell with steel bulkheads at each end, with one steel door in each bulkhead. Sealing of the doors is accomplished by two continuous inflatable seals which surround each door edge.- When the door is closed, the air lock pneumatic supply system provides air to the seals, two seals on each door are inflated outwardly from the door. The seals impinge against a smooth stainless sealing surface.

The air lock and its associated components were to be seismically qualified by the supplier per GGNS Purchase Specification 9645-C-153.0. However, it has been determined that the personnel air locks pneumatic supply system (tubing, supports, and instrumen-tation) between the check valve upstream of the accumulators and the seals had not been seismically qualified.

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Attcchment to AECM-84/0237 Pcgm 2 of 3 B. Analysis of Safety Implications Failure of any component in the pneumatic supply system between the check valve upstream of the accumulators and the seals, as a result of a seismic event, could result in deflation of the containment air lock seals due to loss of air through the failed component. Defation of all seals could result in the loss of containment boundary integrity (reference FSAR Chapter 6.2).

5. The date on which the information of such deficiency ... was obtained.

The date on which Mississippi Power & Light determined that a defect existed was April 13, 1984. Bechtel informed MP&L on April 5,1984, of the unqualified pneumatic air supply system. An evaluation was performed and the deficiency was reported to Mr. R. Carroll, of your office, as a reportable deficiency for Unit 1 on April 16, 1984. The MP&L " Responsible Of ficer," Mr. J. P. McGaughy, Jr. , has been notified.

6. In the case of the basic component . . . the number and location of all such components.

GGNS Unit I has two containment personnel air locks. We do not have knowledge of the location of defective equipment located other than at GGNS.

7. The corrective action which has been taken . . . the name of the individual ... responsible for the action; and the length of time that has been ... taken to complete the action.

A. Corrective Actions Taken Material Nonconformance Report (MNCR) 00380-84 was generated documenting the nonconformance. The corrective actions were specified in Design Change Package (DCP) 84/4506.

The actions taken related to DCP 84/4506 are:

1. Seismically support the pneumatic system from the inflatable seals to the check valves upstream of the accumulators.

2. Replace existing tubing with heavier wall tubing.

3. Replace unqualified components (valves and instruments) with qualified components.

4. Air test the pneumatic supply system modifications.

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Attachment to AECM-84/0237 Pege 3 of 3 B. Responsible Individual ,

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J. P. McGaughy, Jr.

t Vice-President, Nuclear

, Mississippi Power & Light Co.

Responsible for Unit 1 C. Length of Time to Complete Actions Corrective actions on DCP 84-4506 were completed on April 16,

. 1984.

8. Any advice related to the deficiency ... that has been, is being, or j will be given to purchasers or licensees:

r As the deficiency did not originate with MP&L, we have no advice to offer.

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bcc: Mr. D. C. Lutken Mr. Wm. Cavanaugh, III Mr. J. P. McGaughy, Jr.

Mr . T. E. Re ave s , J r .

Middle South Services Nuclear Activities Mr. J. F. Hudson Mr. R. D. Couse Mr. Adrian Zaccaria Mr. A. R. Smith Mr. R. W. Jackson Mr. M. D. Archdeacon Mr. S. M. Feith Mr. L. F. Dale Mr. J. E. Cross Mr. T. H. Cloninger Mr. L. F. Daughtery Mr. J. F. Pinto Mr. S. H. Hobbs Mr. C. C. Hayes Mr. A. C. Wagner Mr. A. S. McCurdy Mr. W. E. Edge Mr. J. E. Keaves File (LCTS) (2)

PRD File Manual File File (Plant)

File (Project) ( )

Mr. M. D. Houston U. S. Nuclear Regulatory Commission Division of Licensing Washington, D. C. 20555 I

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