05000316/LER-1979-040-03, /03L-0:on 791101,during Refueling Operations, Reactor Vessel Head Unbolted W/One Source Range Neutron Flux Monitor Inoperable.Caused by Deficient Refueling Procedure. Procedure to Be Revised

/03L-0:on 791101,during Refueling Operations, Reactor Vessel Head Unbolted W/One Source Range Neutron Flux Monitor Inoperable.Caused by Deficient Refueling Procedure. Procedure to Be Revised

ML17326A369
Person / Time
Site:	Cook
Issue date:	11/29/1979
From:	Chadwell H INDIANA MICHIGAN POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17318A481	List: 05000316/LER-1979-040, Forwards LER 79-040/03L-0 05000316/LER-1979-040-03, /03L-0:on 791101,during Refueling Operations, Reactor Vessel Head Unbolted W/One Source Range Neutron Flux Monitor Inoperable.Caused by Deficient Refueling Procedure. Procedure to Be Revised
References
LER-79-040-03L-01, LER-79-40-3L-1, NUDOCS 7912070356
Download: ML17326A369 (2)

LER-1979-040, /03L-0:on 791101,during Refueling Operations, Reactor Vessel Head Unbolted W/One Source Range Neutron Flux Monitor Inoperable.Caused by Deficient Refueling Procedure. Procedure to Be Revised

Event date:
Report date:
3161979040R03 - NRC Website

text

U. S. NUCLEAR REGULATORY COMMISSION NRC FORM 366 (7.77) t CENSEE EVENT REPORT e

CONTROL BLOCK:

Q1, (PLEASE PRINT OR TYPE ALI. REQOIRED INFORMATION)

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LICENSEE CODE 14 15 LICENSE NUMBER CON'T e

Q DOCKET NUMBER 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES Q10

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QB 74 75 REPORT DATE 80 I

6 MODE 5 TO MODE 6, THEREFORE THE PROVISIONS OF T.S. 3.044 THAT ALL LIMITING CONDI-

~o3 RANGE NEUTRON FLUX MONITOR INOPERABLE.

T. S. 3. 9. 2 REQUIRES TWO OPERABLE SOURCE

~o4 RANGE CHANNELS IN MODE 6.

UNBOLTING THE VESSEL HEAD CONSTITUTED A CHANGE FROM

~OB TIONS Of OPERATION BE MET PRIOR TO A MODE CHANGE WERE NOT ADHERED TO.

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10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LF RiRO EVENT YEAR REPORT NO.,

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THE PROCEDURES'WILL BE REVISED TO RE UIRE THE SIGNATURE OF THE SENIOR REACTOR OPERATOR IN CHARGE OF CORE ALTERATIONS THAT HE HAS VERIFIED THAT ALL CONDI-80 DISCOVERY DESCRIPTION OPERATOR OBSERVATfON 80 LOCATION OF RELEASE Q 80 44 80 ZO)OSS>

80 80 NRC USE ONLY 68 69 804 g 6

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PHONE NAME OF PREPARER TIONS HAVE BEEN MET BEFORE PROCEDING WITH THE HEAD UNBOLTING.

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