ML20207P246
| ML20207P246 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 01/09/1987 |
| From: | Tucker H DUKE POWER CO. |
| To: | NRC OFFICE OF ADMINISTRATION (ADM) |
| References | |
| NUDOCS 8701150296 | |
| Download: ML20207P246 (3) | |
Text
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- 0 DuxE POWEu GOMPAhT P.O.190X 33180 CHAMLOTTit, N.C. 28242 IIAL H. Tt:CKER Tztzrnows vara re=senewt (704) 3PJ-4531 maman rauewrion January 9, 1987 U.S. Nuclear Regulatory Commission
- Document Control Desk Washington, D.C.
20555
Subject:
McGuire Nuclear Station Docket Nos. 50-369, 50-370
Reference:
NRC/0IE Inspection Report 50-369/86-35, 50-370/86-35 Gentlemen:
Pursuant to 10CFR2.201, please find attached a response to the violation which was identified in the above referenced Inspection Report. Please note that Duke Power is denying the alleged violation.
Very truly yours, y
Hal B. Tucker JBD/161/jgm Attachment xc: Mr. W.T. Orders Mr. Darl Hood NRC Resident Inspector Office of Nuclear Reactor Regulation McGuire Nuclear Station U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Dr. J. Nelson Grace, Regional Administrator U.S. Nuclear Regulatory Commission Region II 101 Marietta St.' NW, Suite 2900 04 Atlanta, Georgia 30323 8701150296 870109 l
PDR ADOCK 05000369 G
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e-DUKE P0"ER COMPANY McGUIRE NUCLEAR STATION RESPONSE TO VIOLATION IN INSPECTION REPORT 50-369/86-35 AND 50-370/86-35 Violation 50-370/86-35-03, Severity Level IV i
Technical Specification 6.8.1 requires that written procedures be established, implemented, and maintained covering the activities recommended in Appendix A of Regulatory Guide 1.33, Revision 2, February 1978.
Regulatory Guide 1.33, Revision 2, February 1978 recommends that general plant operations including heatup from cold shutdown to hot standby be covered by written procedures.
Step 12 of Enclosure 4.2,." Pre-Heatup Checklist", of McGuire Operating Procedure OP/2/A/6100/01, " Controlling Procedure for Unit Startup",' directs that no-load programmed steam generator levels be established per OP/2/A/6250/03A.
This resulted in a lifting of the steam generator wet layup pump relief valves and a spill of approximately 3000 gallons of secondary water to the auxiliary building
. floor.
1
RESPONSE
1.
Admission or. denial of the alleged violation:
Duke Power denies the violation as written.
2.
Reasons for alleged violation:
The violation is denied as written because the intent of Step 12. Enclosure 4.2, OP/2/A/6100/01 was to have the Steam Generators at no-load level. The Steam Generators were at no-load level when the operator initialed the step.
The step read as follows:
"12.
Establish no-load programmed S/G's level per OP/2/A/6250/03A (S/G Wet Layup Recirc.)."
The operator checked S/G 1evels prior to signing this step. They were at the proper level following a series of filling and draining for Chemistry control. He then checked the referenced OP for removal and restoration paperwork.
Finding none, he signed the step as being complete.
The intent of the step was met.
In actuality, OP/2/A/6250/03A has nothing to do with establishing S/G 1evels.
Its only purpose is to establish and secure the wet layup system. The procedure used to establish level in the S/G is OP/2/A/6250/03B, (S/G Fill and Drain). That procedure had been in use for approximately one week prior to the spill, as the S/G's were filled and drained for Chemistry control.
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o o The reason the spill occurred is that the wet layup system had not been placed in its startup condition (secured).
The operators doing the startup were unaware that wet layup had not been secured following its use during the shutdown.
No removal and restoration paperwork had been issued and neither the Unit Supervisor nor the Control Room turnovers carried the status of the wet layup system.
The Control Operator assumed the wetup layup system was aligned and proceeded with the startup.
Although the violation is denied as it is written, Duke Power has determined that the cause of the incident was an inadequate procedure.
3.
Corrective steps which have been taken and the results achieved:
Once the source of the leak was identified, operators ran the appropriate enclosure of OP/2/A/6250/03A (S/G Cold Wet Layup Recirculation).
This secured the wet layup system and stopped the leak.
4.
Corrective steps which will be taken to avoid further violations:
In order to prevent a recurrence, Step 12, Enclosure 4.2, OP/2/A/6100/01 will be changed to read:
" Remove S/G from Wet Layup per OP/2/A/6250/03A (S/G Wet Layup Recire)".
The current Step 11 is adequate for having S/G's at proper level with feed established. The bt tt 1 procedure will be modified accordingly.
5.
Date when full compliance will be achieved:
Full compliance will be achieved by 02/01/87.
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