ML20151T805
| ML20151T805 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 08/09/1988 |
| From: | Shelton D TOLEDO EDISON CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 1-795, NUDOCS 8808170332 | |
| Download: ML20151T805 (2) | |
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TOLEDO
%s EDISON A Caruror Energy Ccepany DONALD C. SHELTON w.om. e mr Docket No. 50-346 License No. NPF-3 Serial No. 1-795 August 9, 1988 United States Nuclear Regulatory Commission Document Control Desk Vasnington, t. C.
20555 Subj ec t : Revision of Corrective Actions to Prevent Recurrence of Violation 82-18-01 Dear Mr. Davis On March 18, 1984 (Log No. 1-946), the NRC issued Inspection Report 84-01 documenting a routine safety inspection at Davis-Besse Nuclear Power Station, Unit No. 1.
This inspection report documented the closure of Violation 87-18-01, Control of Locked Valves.
Closure of this Violation was based on verification of Toledo Edison's corrective actio.as which included a requirement that only the Shift Supervisor or the Davis-Besse Tagging Supervicor (Senior Licensed Operator) be permitted to use locked valve keys.
This requires that they personally locl and unlock the padlocks associated with all locked valves, thereby, establishing direct management control over the locked valve program.
A change to this method of control was added as a result of lessons learned from the June 9th, 1985, Loss of Feedvater Event. This change authorized use of locked valve keys by desJ ated operators during emergency situations under direction of the Shift Supel tor (Davis-Eesse Course of Action Appendix C.4.2).
As part of an ongoing program for improvements to the Operations Department, Toledo Edison is atte.npting to reduce' some of the administrative burden on the Shift Supervisors and the Assistant Shift Supervisors. One proposal made and being implemented to help achieve this goal is the initiation of a pilot prcgram revising the current method to control locked valves. The revised process relies en independent verification to assure that the proner valve positions are maintained. The independent verification process is currently augmented by a monthly verification of the position of locked valves during the performance of PT 5186.01, Locked Valve 5.'erification Periodic Test.
8808170332 000009
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PDR ADOCK 05000346 G
pw I O THE TOLEDO EDSON COMPANY EDGON PLAZA 300 MADISON AVENUE TOLEDO, OHfD 43652
Dockat No. 50-346 Lictnsa No. NPF-5 Serial No. 1-795
' Page 2 The monthly verification lo enhanced by random verification of locked valve positions during periodic plant tours by the Sk'.ft Super *cisors/ Assistant Shift Supervisors. The revised process negates the requirement of having the Shift Supervisor / Tagging Supervisor directly involved in having to lock and unlock the valves thereby allowing more direct involvement in plant activities.
Toledo Edison plans to implement the independent verification process for I,
locked valve controls beginning September 16, 1988.
The new locked valve program enhancements vill be monitored for effectiveness and the decision on whether to continue the program vill be made by December 31, 1988.
Should you have any questions regarding the proposed process, please contae*
Mr. Robert V. Schrauder, Nuclear Licensing Manager at Ext. (419) 249-2366.
Sincerely yours,
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VG sa cct A.B. Davis, Regional Administrator DB-1 Resident Inspector A. V. DeAgatio, DB-1 NRR Project Manager 4
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