ML13308B489
| ML13308B489 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/03/1976 |
| From: | Ottoson H SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| NUDOCS 8103060533 | |
| Download: ML13308B489 (1) | |
Text
LICENSEE EVENT REPORT CONTROL BLOCK:
(PLEASE PRINT ALL REQUIRED INFORMATION]
1 6
LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE C IA IS 01 S1 11 10 101-1010101 01 01-1010 14l1l1 1 111 01 3 7
89 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE REPORT DATE 01 CON'T
_J L
[
015101-1012l0161 10 17 13 10 1761 l 01 81. 01 31 716 1 7
8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION During normal full power operation an indication of a primary to 02 Lsecondary leak in steam qenerator "C" was observed at approximately 6:15a.m. on I
7 8 9 80, 03 I-July 30, 1976. After removing the unit from service a subsequent investigation 7
8 9 80 04 I using a hydro on the steam generator -secondary side revealed a leak in the-tube 7
8 9 80 05 [ located at Column 60 Row 45. The leaking tube was explosively plugged and a hydro was 7
8 9 80 repeated. No additional leaks were discovered and the plant was returned to service.1 7
8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT COD CEDE COMPONENT CODE SUPPUER MANUFACTURER VIOLATION I
Li IH IT JEIX1 Cl HI
[Nj JW l1 12 10 1 1NJ 7
8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION 08 [ Wall thinning of steam generator tubes.
7 8 9 80 7
8 9 80 7
89 80 FACILITY METHOD OF STATUS
% POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION 11 LE LL o I
NA I Li I Hi Radiation Levels on Monitor I
7 8
9 10 12 13 44 45 46 80 FORM OF ACTIVITY COITENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 12 1 M2
[M Ij I See lines 19 & 20 belo IGas vent to atmosphere & liquid to ocean 7.8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 10 1 01 01
[E II NA 1
7 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION 14 lolol 01 I
NA 7
8 9 11 12 80 OFFSITE CONSEQUENCES 151 NAI 7
8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION 1 L One leaking steam generator tube required plugging.
7 8 9 10 80 PUBLICITY 17 I Event released to standard publicity list.
7 89 80 ADDITIONAL FACTORS 1 Activity redeased prior to closing steam generator blowdown line and terminating air 7
8 9 80 1
ejector op&ation: 2.7xl6 6Ci Noble Gases from Air Ejector & 0.038Ci through SG blowdown 7
8 9 80 H. L. Ottoson 714-492-7700 i
ME.
PHNE G.PO 881.-667