ML19326C108
| ML19326C108 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 07/16/1976 |
| From: | Cook R ARKANSAS POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML19326C101 | List: |
| References | |
| NUDOCS 8004180768 | |
| Download: ML19326C108 (4) | |
Text
LICENSEE EVENT REPORT CONTROL BLOCK:l l
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l (plEASE PRINT ALL REQUIRED INFORMATION) 1 6
NAME LCENSE NUMOFR Y E TY lAIRIAIRIKill 10101-1010101010l-10101 141 l 111 I Il i 1013 l 1
7 89 14 15 25 28 30 31 32 CATEGCRY T
DOCKET NUMBEA EVENT DATE REPORT DATE O 1 CON'T l l
l lLl IOl 5 lo l-l 013 l i 13 l lOl(olZl8lT161 1017lIlGl7161 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION ss IAL l'ioo kours on ro-28-7eo clu,ino g.urve,itance testin, 9 process l
7 89 80 Eg Ivadiation monitor RI S814, valve CV 3811 Qailed E opes ow cowonawd l
7 89 80 EE l clue ko apparewt 'bindiwg in valve hekweew skemand I)LEshiwq. YAkVe pk& cec}
l 7 89 80 EE lin ES posibiow pey Teck Spec 3.3. New stem and buW will be installect I
7 89 na Ickrina refuelino shut doww(( 50-SI S / 76 -l @,
I 80 7 89 k-y 80 DE CODE C PONENT C M
ACTL R V10tATON
= ls;3J LBJ Ivil"I L ivikEIXl (Aj lC l fo l 3 lOl INl 7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION NE !
DD&Y4Ehk hknd(no kn VakVE WeEM SkCM Ahd buCb Ho Od uSE d
&IiMff o I
EBIcv'l38t2. to open u,ow Es sional. Value olaced in E3 oositiou dev I
7 89 80 7 89 i
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80
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F CLITY METHOD OF STATUS
% POWER OTHEA 1TATUS DISCOVERY CISCOVERY DESCAIPTON LGJ 1o101o1 I N A I lbl I
NA i
i 7 8 9
10 12 13 44 45 48 80 AFLF SED OF L ASE.
OUNT OF ACTIVITY LOCATON OF AELEASE E
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5 7 8 9
10 11 44 45 80 PERSONNEL EXPOSURES NUMBEA TYPE DESC'ArpTON EE l0lO1 OI LZJ l
NA I
7 89 11 12 13 80 PERSONNEL INJUAfES NUMBEA DE lOlo!Ol IDESCRrPTOS h l 3 t
7 89 11 12 80 OFFSITE CONSEQUENCES DE I klA I
7 89 80 LOSS OR OAMAGE TO FACILITY Twf DE LZJ lDESCR'PdTA I
7 89 10 80 PUBUCITY i
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7 89 80
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ADOITIONAL FACTOAS s
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NAME:
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No.
50-313/76-14
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- Reportaleic Occurrence Report 2.
,itcport Date: July 16, 1976 3
Occurrence liitt_e,:
June 28, 1976 4
Facility: Arkansas Nuclear.One - Unit 1 Russellville, Arkansas 5.
Identification of Occurrenec:
Reactor Building cooling unit service water valve CV-3812 failed to j
.open on command.
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Canditions Prior to Occurrence:
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Steady-State Power Reactor Power n
Mitth Ilot Standby Net Output n
MIVe Cold Shutdown Percent of Full Power
's n
't Refueling Shutdown Load Changes During Routine Power Operation Routine Startup Operation Rotitine Shutdown Operation j
Other (specify] 'Not shutdown il 4
7.
Description of Occurrence:
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At approximately 1400 hours0.0162 days <br />0.389 hours <br />0.00231 weeks <br />5.327e-4 months <br /> on June 28, 1976 during surveillance testing of process radiation monitor RI3814, valve CV-3812 failed to open on i
consnand. The valve required ES position is open.
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Attachuent "C" March 23,l1976 NSP-In, Rev. 4 Page 2 of 4 i
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j Ucportable Occurrence !!cport No*
50-313/76-14 Des i gna t ion o f Appa ren t Ca us.e..o.l'..Oc.c..u.r..rence.:
8.
t Design l'rocedu rc 1
3 thnufacture IJnnsual Service Condit ion y
Including linvi ronmental Installation /
Construction
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Component Failure Operator e
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' Othe r : (speci fy)
A The failure appears to be from binding in the valve.between the valve i
stem and bushing.
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Analysis of Occurrence:
Since the redundant loop was operable and the affected loop was operable when CV-3812 was opened, there was na hazard to the health and safety of the public.
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4 At t nelunent "C"
tb rch 23, 1976 NSP-10, Rev. 4 Page Z "f 4 7
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i Reportaisic Occurrence !!cport do.
50-313/76-14 10.
Corrective Action:
4 The valve can't be inspected internally at this time, but it i
L placed in its ES position per Technical Specification 3.3.
New valve during a refueling shutdown. stems and bushings will be installed in CV-3812 j
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Failure Data:
There has been one other failure of this type reported in 50-313/75-1.
Valve type is Contromatics butterfly valve flodel 600SRIIS 4
Serial No. 83154-A-1-1
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1 l-i At tacInnent "C"
. Alarch ~23, 1976 NSP-10,-Rev. 4 Page 4 of 4 r
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