ML13309B391
| ML13309B391 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 03/30/1984 |
| From: | Medford M Southern California Edison Co |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML13309B392 | List: |
| References | |
| RTR-NUREG-0660, RTR-NUREG-0737, RTR-NUREG-660, RTR-NUREG-737, TASK-2.K.3.17, TASK-TM NUDOCS 8404050019 | |
| Download: ML13309B391 (3) | |
Text
REGULATORY *eORMATION DISTRIBUTION SYS1)4 (RIDS) eF\\
ACCESSION NBR:8404050019 DOC.DATE: 84/03/30 NOTARIZED: NO DOCKET #
FACIL:50-361 San Onofre Nuclear Station, Unit 2, -Southern Californ 05000361 50-362 San Onofre Nuclear Station, Unit 3, Southern Californ 05000362 AUTH.NAME AUTHOR AFFiLIATION MEDFORDM.O.
Southern California Edison Co.
RECIP.NAME RECIPIENT AFFILIATION KNIGHTUNG,W.
Licensing Branch 3
SUBJECT:
Forwards "Rept ECC utages.1983," per NUREG*0660/0737, Item IIK.3.17,Info insufficient to warrant changes in maint programs or Tech Specs re ECCS.Summary of outage causes
- provided, DISTRIBUTION CODE: 80018 COPIES RECEIVED:LTR._ ENCL 4 SIZE:
+
TITLE: Licensing Submittal: PSAR/FSAR Amdts & Related Correspondence NOTES:J Hanchett Icy PDR Documents. ELD Chandler icy, 05000361 J Hanchett Icy PDR Documents. ELD Chandler Icy, 05000362 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL NRk/DL/ADL
- 1.
0 NRR LB3 LA 1
0
- ROODH, 01 1
1 INTERNAL: ELD/HDS2 1
0 IE FILE 1
1 IE/DEPER/EPB 36 3
3 IE/DEPER/IRB 35 1
1 IE/DGASIP/GAB21 1
1 NRR/DE/AEAB 1
0 NRR/DE/CEB 11 1
1 NRR/DE/EHE8 1
1 NRR/DE/EQB 13 2
2 NRR/DE/GB 28 2
2 NRR/DE/MEB 18 1
1 NRR/DE/MTEB 17 1
1 NRR/DE/SAB 24 1
1 NRR/DE/SGEB 25 1
1 NRR/DHFS/HFEB40 1
1 NRR/DHFS/LQB 32 1
1 NRR/DHFS/PSRB 1
1 NRR/DL/SSPB 1
0 NRR/DSI/AEB 26 1
1 NRR/DSI/ASB 1
1 NRR/DSI/CPB 10 1
1 NRR/DSI/CSB 09 1
1 NRR/DSI/ICSB 16 1
1 NRR/DSI/METB 12 1
1 NRR/DSI/PSB 19 1
1 NR 22 1
1 NRR/DSI/RSB 23 1
1 FI E 04 1
1 RGN5 3
3 RM/
AMI/MIB 1
0 EXTERNAL: ACRS 41 6
6 BNL(AMDTS ONLY) 1 1
DMB/DSS (AMOTS) 1 1
FEMA-REP DIV 39 1
1 LPOR 03 1
1 NRC PQR 02 1
1 NSIC 05 1
1 NTIS 1
1 NOTES:
2 2
TOTAL NUMBER OF COPIES REQUIRED: LTTR 55 ENCL 48
Southern California Edison Company P. 0.
BOX 800 2244 WALNUT GROVE AVENUE ROSEMEAD. CALIFORNIA 91770 M.O. MEDFORD TELEPHONE MANAGER, NUCLEAR LICENSING (213) 572-1749 March 30, 1984 Director, Office of Nuclear Reactor Regulation Attention:
Mr. George W. Knighton, Branch Chief Licensing Branch No. 3 U. S. Nuclear Regulatory Commission Washington, D.C.
20555 Gentlemen:
Subject:
Docket Nos. 50-361 and 50-362 Emergency Core Cooling System Outage Report -
1983 San Onofre Nuclear Generating Station, Units 2 and 3 Pursuant to Section II.K.3.17 of the NUREG-0660/0737 Volume of the San Onofre Nuclear Generating Station, Units 2 and 3 FSAR, enclosed is the report concerning Emergency Core Cooling System (ECCS) outages.
This report covers the period from January 1, 1983, through December 31, 1983, and includes the Unit ID, the ECCS component, cause of outage, duration of outage and corrective actions taken to return the component to operable status.
For purposes of this report, the components of the ECCS have been subdivided into the following categories with SONGS system designators in parenthesis:
Chemical and Volume Control System (Charging System only) (BGA), Boric Acid Mix Storage (components required for safety injection) (BGB), Safety Injection and Shutdown Cooling System (BHA), Refueling Water Storage Tanks (BHB),
Containment Spray (BKA), Emergency Diesel Generators (KJA and KJB) and 1E Power System (components required for ECC subsystems loading) (PBA through PNA).
The outage causes can be summarized as follows:
UNIT 2
- 1.
Surveillance Testing 14.2%
- 2.
Corrective Maintenance 73.4%
- 3.
Preventive Maintenance 11.8%
UNIT 3
- 1.
Surveillance Testing 16.7%
- 2.
Corrective Maintenance 64.6%
- 3.
Preventive Maintenance 18.8%
8--6404050019 840330 PRADOCK 05000361 R
PDR9
Mr. George March 30, 1984 Since most of the ECCS outages involved other than critical path work during plant shutdowns, they received a lower maintenance priority. Therefore, the reported outage duration is not a reflection of problems associated with the ECCS. It is our position that there is insufficient information to warrant changes in maintenance programs or Technical Specifications concerning the ECCS. We will re-evaluate this position following the next annual report to be submitted by March 31, 1985.
If there are any questions regarding this report, please contact me.
Sincerely, cc: A. E. Chaffee (USNRC Resident Inspector, Units 1, 2 and 3)
- 3. P. Stewart (USNRC Resident Inspector, Units 2 and 3)
U. S. Nuclear Regulatory Commission Document Control Desk H. Rood, Project Manager, Licensing Branch No. 3 Institute of Nuclear Power Operations (INPO)