05000315/LER-1979-021-03, /03L-0 on 790327:pressure in RCS Was Found Below Tech Spec Limit While in Mode 1.Caused by Operator Inadvertantly Opening Auxiliary Spray Valve to Pressurizer QRV-51.Valve Closed Upon Discovery

/03L-0 on 790327:pressure in RCS Was Found Below Tech Spec Limit While in Mode 1.Caused by Operator Inadvertantly Opening Auxiliary Spray Valve to Pressurizer QRV-51.Valve Closed Upon Discovery

ML17317B114
Person / Time
Site:	Cook
Issue date:	04/17/1979
From:	Dickson J INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B111	List: 05000315/LER-1979-020-03, /03L-O on 790323:pressurizer Relief Tank Rupture Disk Blew Out While in Mode 3.Caused by Repeated Pressure Fluctuations Causing Rupture Disk to Weaken.Corrective Action Unnecessary Since Doors Functioned as Designed 05000315/LER-1979-021-03, /03L-0 on 790327:pressure in RCS Was Found Below Tech Spec Limit While in Mode 1.Caused by Operator Inadvertantly Opening Auxiliary Spray Valve to Pressurizer QRV-51.Valve Closed Upon Discovery ML17317B110
References
LER-79-021-03L, LER-79-21-3L, NUDOCS 7904240387
Download: ML17317B114 (2)

LER-1979-021, /03L-0 on 790327:pressure in RCS Was Found Below Tech Spec Limit While in Mode 1.Caused by Operator Inadvertantly Opening Auxiliary Spray Valve to Pressurizer QRV-51.Valve Closed Upon Discovery

Event date:
Report date:
3151979021R03 - NRC Website

text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION

{7-77)

ENSEE EVENT REPORT

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CONTRIRIL BLOCK:

Q1 (PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 1 6

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LICENSEE CODE 14 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T

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8 60 61 DOCKET NUMBER 68 69

'VENTDATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES QIO WHI E IN MODE 1

THE PRESSURE IN THE R ACT R

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BEL W 2220 PSIA

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~O4 CONTRARY TO TECH.

SPEC. 3.2.5.b.

ACTION STATES RESTORE WITHIN 2 HOURS.

PRESSURE WAS BELOW LIMIT FOR 6 MINUTES AND LOWEST PRESSURE ATTAINED WAS 2190 PSIA.

NO

~OS PROBABLE CONSEQUENCES.

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CAUSE

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VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERIRO EVENT YEAR REPORT NO.

CODE TYPE NO.

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21 22 23 24 26 27 28 29 30

'31 1

32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENTP NPRDP PRIME COMP, COMPONENT TAKEN ACTION ON PLANT METHOD HOURS +22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER

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VALVE WAS CLOSED ON DISCOVERY THAT IMPR P

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HAVE BEEN INSTRUCTED THAT CARE MUST BE OBSERVED WHEN OPERATING CONTROLS.

4 METHOD OF OTHER STATUS ~

DISCOVERY NA

~AQ31 44 45 45 44 NAME OF PREPARER JAMES D.

DICKSON 7

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FAGILIETY STATUS,--.'A POWER

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Q29 7

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10 12 13 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ36 ZZ uZQ33

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10 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q39

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QET ~EQ35 NA 7

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11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTION 41 Pap ~OO 08 NA 7

8 9

11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

DESCRIPTION

9 Z

Q42 NA 7

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10 P U8 LICITY ISSUED DESCRIPTION ~S KZ Ladle 7

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DISCOVERY DESCRIPTION Q32 OPERATOR OBSERVATION LOCATIONOF RELEASE Q NA 80 80 80 80 80 80 NRC USE ONLY EgO 80 45 0

68 69 (616) 465-5901 ZO "K'(27 387

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