ML13308B519
| ML13308B519 | |
| Person / Time | |
|---|---|
| Site: | San Onofre  |
| Issue date: | 04/01/1977 |
| From: | Ottoson H SOUTHERN CALIFORNIA EDISON CO. |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| Shared Package | |
| ML13308B518 | List: |
| References | |
| RO-77-04, RO-77-4, NUDOCS 8103110078 | |
| Download: ML13308B519 (1) | |
Text
Update Report--Previous Report date 03-02-77 CONTROL BLOCK:1L ~
L L (PLE PRINT ALL REQUIRED INFORMATION)
LICENSEE
.LICENSE EVENT NAM1E
- 'LICENSE NUMBER TYPE TYPE
]C IS01 S11 I 1010 1-101 01 01 010I1-1010 1LL1J11211.jIJJ Lii 89 14 15 25 26 30 31 32 REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER EVENT DATE REPORT DATE T1CON'T I Li L
0 15 101-01 21 016 j 10l2l1151 71 7 10 14 1011171 71 8
57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION
] 1 During a hydrostatic test of the containment spray system, two leaks in the heat 8 9 80
] I affected zone of welded joints in Line 734 were discovered. Line 734 will be 8 9 80 1J 1 replaced during the present outage. Line 734 is fabricated from SA 312, TP 304, 1
8 9 80
)]
[-Schedule 10S stainless steel.
The schedule 10S pipe will be upgraded to schedule I
8 9 80 I I 40,LER 77-02 describes a related incident (77-04) 8 9 PRIME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPUER MANUFACTURER VIOLATION
]ISIFI E I I PII IP jE I X I X1 IA lB 11 l3 0 1 INJ 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION I [The failures occurred due to sensitization to intergranular stress corrosion, probably 8 9 80
] Idue to weld technique. Improved weld procedure and low carbon stainless steel were 8 9 80 I lused for the replacement pipe.
I 89 80 FACILITY METHOD OF STATUS
% POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION S101 0 10 1 1 NA C
I NA I
8 9
10 12 13 44 45 46 80 FORM OF ACTIVITY COI TENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE S 0 Zi_
N NA_
8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 10 10 1 0
[jZ I NA 8 9 11 12 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION
]
1 0 I NA 8 9 11 12 80 OFFSITE CONSEQUENCES
[_NA 8 9 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION 101 1
NA 8 9 10 80 PUBLICITY
]I NA 89 80 ADDITIONAL FACTORS
[ NA 8 9
.80 83 9 80 NAME:
H. L. OTTOSON E3n0 714) 492-7700