ML13330A373
| ML13330A373 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/07/1981 |
| From: | Moody W, Baskin K Southern California Edison Co |
| To: | Crutchfield D Office of Nuclear Reactor Regulation |
| References | |
| TASK-***, TASK-RR NUDOCS 8108140195 | |
| Download: ML13330A373 (4) | |
Text
Southern California Edison Company P. 0. BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD. CALIFORNIA 91770 K. P. BASKIN TELEPHONE MANAGER OF NUCLEAR ENGINEERING, (213) 572-1401 SAFETY, AND LICENSING August 7, 1981 Director of Nuclear Reactor Regulation Attention:
D. M. Crutchfield, Chief Operating Reactors Branch No. 5 Division of Licensing U. S. Nuclear Regulatory Commission Washington, D.C. 20555 13 9 8.
Gentlemen:
Subject:
Docket No. 50-206 SEP Redirection San Onofre Nuclear Generating Station Unit 1 My letter of April 7, 1981 indicated SCE's commitment to support the NRC in the redirected Systematic Evaluation Program (SEP).
As part of that commitment, we indicated our intention to complete draft assessments for 16 topics by June 30, 1981.
Of the 16 specific topics identified in our April 7 letter, SCE submitted assessments for 11 topics by July 1, 1981, and the NRC had completed assessments for 2 others. In addition, SCE submitted assessments for two other topics not identified in our April 7 letter.
Therefore, a total of 15 topics were complete by July 1, 1981.
By letter dated July 7, 1981, the NRC expressed concern over the status of the redirected SEP indicating that only 50 topics had been received by June 15, 1981 and that of these less than half were useful because of poor quality. In addition, a meeting was requested on July 15, 1981 to discuss the utilities commitment to the program. At the July 15, 1981 meeting, it became clear that the NRC's assessment of the status of SEP was premature since a significant number of additional topic assessments had been received by the meeting. Moreover, the NRC acknowledged that the overall quality of topic assessments received had improved.
The SEP utilities emphasized that they had been making a good faith effort to meet the interim objectives of the program and reaffirmed their commitment to continue to support the NRC in the redirected SEP. The NRC requested that the utilities document their commitment to the program by providing schedules for completion of the remaining SEP topics which were identified as utility responsibility in to the NRC's July 7, 1981 letter.
8108140195 819897' PDR ADOCK 05000206 P
- PDR,
D.
August 7, 1981 SCE has reviewed the list of SEP topics provided as Enclosure 2 to the NRC's July 7, 1981 letter with respect to the schedules for completion of draft safety analysis reports.
The topics for which SCE has responsibility for preparing safety analysis reports are listed in Enclosure 1 to this letter along with the NRC schedule contained in Enclosure 2 to the NRC's July 7 letter and the anticipated SCE submittal date. The schedule for submittal of these topics by SCE is based on our review of the topic definitions, available NRC prepared safety evaluation reports and the availability of SCE manpower.
It is estimated that completion of these assessments will require the equivalent of about 4 men full time between now and November 15, 1981, as well as significant contributions from several consultants. It is estimated that SCE's total commitment to support the SEP during this time will be at least twice that. The appropriate personnel within SCE have been identified and are committed to meeting the schedules in Enclosure 1. However, it must be recognized that the SEP is not the only activity being performed by SCE.
Other activities, such as NRC requests, IE Bulletins, TMI related modifications, station repairs, environmental qualification, etc., can, from time to time, take on a higher priority based on NRC imposed schedules or plant startup schedules.
Inasmuch as these activities are not foreseeable, no allowance has been made for such conflicts in priority in developing the schedules in Enclosure 1. Furthermore, although our goal will be to complete draft assessments for all topics prior to November 15, 1981, it is recognized that the amount of analyses required for some topics, e.g., III-4.C and III-5.A, may extend the completion dates for these analyses beyond that date.
In the event that delays in the schedules provided in Enclosure 1 become apparent, we will notify you as early as possible.
I trust that this information will be helpful to you in planning the remainder of the SEP for San Onofre Unit 1. If you have any questions on this information, please do not hesitate to call me.
Very truly yours, Enclosure SCHEDULE FOR SEP TOPIC ASSESSMENTS TO BE PREPARED BY SCE Topic No.
Description NRC Schedule SCE Schedule Remarks II-1.C Offsite Hazards 11/15/81 11/15/81 II-4.D Slope Stability 8/31/81 8/31/81 II.4.F Settlement 8/31/81 8/31/81 111-2 Wind and Tornado 10/15/81 10/15/81 Loadings III-3.A Effects of High Water 8/31/81 6 weeks after Level NRC completion of SERs for topics II-3.A and II-3.B III-4.A Tornado Missiles 8/31/81 10/15/81 III-4.C Internally Generated 8/31/81 11/15/81 Missiles III-4.D Site Proximity Missiles 4/30/81 8/31/81 III-5.A HELB Inside Containment 8/31/81 11/15/81 III-5.8 HELB Outsite Containment 6/30/81 10/15/81 III-7.D Containment Structural 5/29/81 6/9/81 Complete Tests IV-2 Reactivity Control 8/31/81 9/30/81 Systems VI-1 Organic Materials 11/15/81 11/15/81 VI-10.A Testing of Reactor Trip 11/15/81 11/15/81 and ESF Systems IX-1 Fuel Storage 8/31/81 8 weeks after NRC completion of SER for lead plant IX-3 Service Water Systems 8/31/81 8/31/81
-2 Topic No.
Description NRC Schedule SCE Schedule Remarks IX-5 Ventilation Systems 8/31/81 8 weeks after NRC completion of SER for lead plant XV-1 Decrease in Feedwater 8/31/81 7/1/81 Complete Temperature XV-2 Steam Piping Failures 6/30/81 7/1/81 Complete XV-3 Loss of External Lead 6/30/81 7/1/81 Complete XV-4 Loss of A-C Power 6/30/81 8/11/81 XV-5 Loss of Feedwater Flow 6/30/81 7/1/81 Complete XV-6 Feedwater Pipe Breaks 6/30/81 7/1/81 Complete XV-7 RCP Rotor Seizure 8/31/81 7/1/81 Complete XV-8 Control Rod Misoperation 6/30/81 7/1/81 Complete XV-9 Startup of Inactive Loop 6/30/81 5/11/81 Complete; NRC prepared SER XV-10 CVCS Malfunction 6/30/81 7/1/81 Complete XV-12 Rod Ejection Accidents 6/30/81 7/1/81 Complete XV-14 Inadvertent Operation 6/30/81 7/1/81 Complete of ECCS/CVCS XV-15 Inadvertant Opening of 6/30/81 7/1/81 Complete Safety/Relief Valve XV-16 Failure of Small Lines 6/30/81 8/4/81 Complete Outside Containment XV-17 Steam Generator Tube 6/30/81 1/29/80 Complete; Failure NRC prepared SER XV-19 Loss of Coolant 6/30/81 7/1/81 Complete Accidents