ML13308B491
| ML13308B491 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 08/12/1976 |
| From: | Ottoson H SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| RO-75-20, NUDOCS 8103060540 | |
| Download: ML13308B491 (1) | |
Text
ICENSEE EVENT REPORT CONTROL BLOCK:
(PLEASE PRINT ALL REQUIRED INFORMATION]
1 6
LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE I CA I 0I()I.
T 10 10 - 0 1 0 1 01 0 1-1 0 101 [41 1 1111l11 013 7
89 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE REPORT DATE lICON'T[ joJ L
L I l 015161-10121 016 0 1713111716 101811 1211 6 7 6 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION 0jI Following a normal shutdown, a blockage was discovered in the boric acid transfer 7
8 9 80 03 I pump discharge line. The blockage, crystalized boric acid solution, was cleared.
7 8 9 80 04 I This event is nonrepetitive. Redundant systems meeting Technical Specification 7
8 9 80 05 I requirements were operable (75-20).
7 8 9 80 7
8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER VIOLATION I
(L a]
IHI El Al TIE IRI
[NJ
[WI 11 21 01
[Nj 7
8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION Blockage occurred because the three foot section of pipeline penetrating the concrete 7
8 9 80 091 roof of the Auxiliary Building is not heat traced or insulated and is susceptable to 7
8 9 80 1 oI precipitation of boric acid solution. Leakage of concentrated boric acid past the 7
8 9 80 FACILITY METHOD OF STATUS
% POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION 0 k0 1 1 1 NA I,.I a I Attempted operation 76 9
10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 12
[Z I ZI NA I
NA 7 8 9
10, 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION.
13 10 10 Z I I NA 7
8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION 14 10 101 I
NA 7
8 9 11 12 80 OFFSITE CONSEQUENCES E5 NA 1
7 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION
[
I Z I NA 7
8 9 10 80 PUBLICITY 17 Event released to standard publicity list.
7 8 9 80 ADDITIONAL FACTORS Cause description - continued 1 81 storage tank isolation valve CV-334 aggravated this condition. Heat tracing and 7
8 9 80 19 I insulation will be added next s heduled refueling...
7 8 9 80 NAMF H. L. Ottoson PHONE:
714-492-7700 GPO 881-667