ML20206F737
| ML20206F737 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 04/07/1987 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 8704140351 | |
| Download: ML20206F737 (3) | |
Text
o DUKE POWER GOMPANY P.O. BOX 33189 CHARLOTrE, N.C. 28242 HAL B. TUCKER retzpuown (704) Omaat vw= r===so==v aw.tman enommun.
April 7, 1987
,U.S.,N,uclear_ Regulatory Commission iDocumenticostrol Deski Washington, D.C.
20555 l
Subject:
McGuire Nuclear Station Docket Nos. 50-369 and 50-370 NRC/0IE Inspection Report Nos.
50-369/87-05 and 50-370/87-05 Gentlemen:
Pursuant to 10CFR 2.201, please find attached the response to the violation identified in the above referenced Inspection Report.
Very truly yours.
- B.//A n
Hal B. Tucker i
SEL/25/jgm Attachment xc:
Dr. J. Nelson Grace Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta St., NW, Suite 2900 Atlanta, GA 30323 Mr. Darl Hood U.S. Nuclear Regulatory Commission Office of Nuclear Reactor Regulation i
Washington, D.C.
20555 Mr. W.T. Orders NRC Resident Inspector McGuire Nuclear Station f
8704140351 870407 gl PDR ADOCK 05000369 G
[g i
i McGUIRE NUCLEAR STATION RESPONSE TO VIOLATION 50-369/87-05 and 50-370/87-05 a
Technical Specification (TS) 6.8.1 requires that written procedures be estab-lished, implemented, and maintained covering activities recommended in Appen-dix A of Regulatory Guide 1.33, Revision 2, February 1978.
Appendix A of Regulatory Guide 1.33, Revision 2, February 1978 recommends that surveillance testing activities be covered by written procedures.
l Station Directive 4.2.1, " Handling of Station Procedures", states that proce-dures shall be written to minimize risk to equipment.
Section 17.2.5, " Instructions, Procedures and Drawings", of the Duke Power Company Quality Assurance Program Topical Report implements Criterion V of j
10CFR Part 50, Appendix B, and requires that procedures specify conditions which must exist prior to and during performance of an activity and include criteria for determining that the activity addressed is satisfactorily accom-plished.
Contrary to the above, " Slave Relay Test" procedures, PT/1 and 2/A/4200/28, proved to be deficient in that they failed to adequately specify the nuclear service water (RN) and control area ventilation and chilled water (VC/YC) system alignment necessary to satisfactorily accomplish the periodic testing of safety injection salve relays. This resulted in a protective trip of the "B" VC chiller, on February 4,1987, when the RN cooling water flow through i
its condenser was interrupted.
This, in turn, placed both units in the requisites of TS 3.0.3.
This is a Severity Level IV (Supplement I) violation.
i j
RESPONSE
1.
Admission or denial of violation:
1 i
Duke admits the " Slave Relay Test" procedure, PT/1-2/A/4200/28, was inadequate. This admittance is made with the following points noted:
(1) PT/1/A/4200/28 has been run 21 times since unit startup without a documented case of this or a similar incident occurring in the past.
(b) PT/2/A/4200/28 has been run 12 times since unit startup with the same results as (a) above.
(c) The VC system is a shared unit system.
2.
Reason for the violation if admitted:
The cause of B train VC chiller trip is attributed to IRN-297B being placed in a closed position for a longer than normal time before test 4
initiation.
i i
IR 87-05 Page 2 3.
Corrective steps which have been taken and the results achieved:
The appropriate sections of PT/1-2/A/4200/28 have been changed to ensure this event cannot reoccur. The section now requires, in addition to all essential RN loads being fed from the opposite train, that the opposite train of VC/YC be in operation and the train under test be secured. -This step will ensure that the VC chiller discharge valve will have no affect on the chiller regardless of the time duration in the closed position.
The procedures were additionally reviewed for similar shortcomings and ncne were noted at this time.
4.
Corrective steps planned to avoid further violations:
No additional corrective actions are planned.
5.
The date when full compliance will be achieved:
PT/1-2/A/4200/28 was changed effective 3/5/87.
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