ML19326C103
| ML19326C103 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 07/16/1976 |
| From: | Cook R ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19326C101 | List: |
| References | |
| NUDOCS 8004180764 | |
| Download: ML19326C103 (4) | |
Text
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UCENSEE EVENT REPORT CON' TROL 8 LOCK:1 l l
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[>MSE PRINT ALL KEQUIRED INFORMATION) 1 8
NAMs LCENSE NUMBEA E
TYPE I AI RI AIRIKil i 10101-10101010101-10101 141 I I I I i l I I 10131 i
7 89 14 15 25 26 30 31 32 T7PE S N CE cATEcony DOCKET NUMBER EVENT DATE AE O i Corn i i
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l.1 1015101-101311131 lolfal212.17161 10171lAT DATE161T 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCR!PTION 88 l AE Ill5 hours on 6-2 2-7fo a leak was discovered in a socket weld.
I 7 89 80 EE IDi D9 O__9b Ci V)e k d. } H s'ht&FY Make< o ?iem o M6 C sc;ctiow relief I
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@B lline. Steadv Avlo was observed. Leak was isolated d namo suctica j
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na land discLar/ae. Naw sectios op o;o;u and elbou3 were installe d.
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80 7 89 6
J un I ( 50-313 ! 76-12.)
801-7 89 pnug 80 E
CODF COMP MANUF R
VOLATON
@B IClGI [Ej I?lll?ENTCODEIElXIxlL6J 17l a l a.la.1 IN_j 7 89 10 11 12 17 43 44 47 48 CAUSE DESCAIPTION gg Idawre not determined at this 6/me. New sedica o@ ol> lao and i
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80 leibow were installed.
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7 89 80 sti S
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[GJ 101010 1 INATHEASTATUS I
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OSCOVEAY DISCOV' 'Y DESCRIPTON 1
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10 12 13 44 45 46 80 AftE SEO OF DF ASE lIJ LIJ l
M KOUNT OF ACTMTV I
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A LOCATON OF AELEASE i
7 8 9
10 11 44 45 8C PERSONNEL EXPOSUAES NUMAF A Type DESCAIPTort RE 1010101 LZJ l
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I 7 89 11 12 13 80 PEASONNEL INJUAIES NUMBER DESCRIPTON H 1010101 1 NA I,
7 89 11 12 80 OFFSITE CONSEGufNCES DE !
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7 89 80 LOSS OR OAMAGE TO FACILITY inF DESCAtPTON WI WA l-i 7 89 10 80 PUBLICITY 1
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7 89 80 ADDITIONAL FACTOPS (mli NA I
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66k NAME: 0
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PHONE:
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l-Jteportahic Occurrence Report No.
50-313/76-12 j-2.
, Report Date: July 16, 1976 3
Un urrency pfi_tX: June 22,1976
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.Fac11ity: Arkansas Nuclear One - Unit 1 Russellville, Arkansas 5.
Identification of Occurrenec:
Socket weld leak in Primary Makeup Pump P36C suction relief line.
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Conditions Prior to Occurrence:
Steady-State Power _
Reactor Power 0
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l Ilot Standby Not Output 0
We Cold Shutdown x
Percent of Full Power 0. 's Refueling Shutdown Load Changes During Routinc Power Operation Routine Startup m
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Opera tion Routine Shutdown t
Operation Other (specify) s i
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Description of Occurrence:
At approxinately 1115 hours0.0129 days <br />0.31 hours <br />0.00184 weeks <br />4.242575e-4 months <br /> on June 22, 1976, a leak was discovered'at a socket weld, pipe to 900 elbow weld, in the primary makeup pump P36C suction relief line. The leak proved to be a crack in' the socket weld.
' The leakage rate was not measured but it was observed to be a steady drip.
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,I!eportabic Occurrence -I:cport No.
50-313/76-12 i
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Ilesignation of Apparent Citise, of, Occeirrence:
g Design l'rocedurc i
flanufacturc Unusual Service Conditions Including linvironmental Installation /
l, Construction Component Failure
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i; Other (specify) Not determir.ed at this time.
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!). Analysis of Occurrence:
i Since the leak could be isolate'd at the pump suction and discharge and i 1 only two of the three pumps are. required to be operable at power, there was no hazard to the health and safety of the public.
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Reportabic Occurrence Iteport do.
50'313/76-12 10.
Corrective Action:
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The section of piping and the 900 elbow containing the crack was removed and repairs were mad'e by installing a new 'section of pipe and elbow.
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Failure Data:
No equipment malfunction was involved. The affected weld is similar j
to cracked welds reported in reports 50-313/74-12 and 50-313/75-3.
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