ML18347B178

License Event Report LER-78-000-00 Re Out-of-Sequence Rod Withdrawal

ML18347B178
Person / Time
Site:	Palisades
Issue date:	04/28/1978
From:	Hoffman D Consumers Power Co
To:	James Keppler NRC/RGN-III
References
LER 1978-000-00
Download: ML18347B178 (2)

Text

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........ _ .... -.-"J consumers Power company General Offices: 212 West Michigan Avenue, Jackson, Michigan 49201

• Area Code 517 788-0550 April 28, 1978 Mr James G Keppler Office of Inspection and Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255 -LICENSE DPR-20 -PALISADES PLANT -LER-78 -OUT-OF-SEQUENCE ROD WITHDRAWAL CJ ;:;; -\ ""

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<o oo :"'11(}) (/'I_.; c;.-o 7!.@ ::ic: --! c;. :Ji:!. The reverse side describes a reportable occurrence under Technical cation 6.9.2.A.2 for the Palisades Plant. This event was identified by TWX on April 17, 1978. David P Hoffman Assistant Nuclear Licensing Administrator CC: Director, Office of Nuclear Reactor Regulation Director, Office of Inspection and Enforcement

• PALISADES NRC FORM366 (7-77) U.S. NUCLEAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTROL BLOCK: I 10 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 7 8 IM I I I p I A I LI 1 101 010 I 0 I 0 I 0 I 0 I 0 I 0 I 0 I 0 I 0 101 411 11 I ll l 101 I 10 9 LICENSEE CODE 14 LICENSE NUMBER

• 25 26 LICENSE TYPE JO 57 CAT 58 CON'T !TI:!] 7 8 o I 5 I o I o I o I 21 5 I 5 IG)I o I 4 11 I 5 I 71 8 I© I o I 4 I 2 I 8 I 7 I 8 10 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

I During Low Power Physics Tests, regulating group 2 rods were withdrawn out-I !]JI] jof-sequence

... This is contrary to the requirements of TS 3.10.5.b and the CQIIJ jLow Power Physics Test procedures.

The out-ofmsequence maneuver occurred [£ITJ Jduring sequential rod worth measurements when a faulty position indication C2:I§] 1for CRDM '#.25 (group 1) indicated it was fully withdrawn.

When the condi-t m2J 1 tion was detected, a different target rod was selected and the test con-[]]]] 1 tinued. Continuous boration was in progress. 7 8 9 SYSTEM CAUSE CAUSE COMP. CODE CODE SUBCODE COMPONENT CODE SUBCODE [ill] IRIB I@ w@ w@ 1c1R1n1R1v1E1@

w@ 7 8 9 10 11 12 13 18 19 SEQUENTIAL OCCURRENCE REPORT REPORT NO. CODE TYPE VALVE SUBCODE w@ 20 r.:;.., LE RIRO CV ENT YEAR '0 REPORT I 7 I 8 I . NUMBER 21 22 l==J 101"0191*

L::j 10111 L!J L=J 23 24 26 2 7 28 29 30 J 1 REVISION NO. L2J 32 I 80 ACTION FUTURE EFFECT SHUTDOWN r:;::;., ATTACHMENT NPRD-4 PRIME COMP. TAKEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUPPLIER COMPONENT MANUFACTURER W@W@ LI.JC§) I ol o Io Io I lli.J@ 1.1U@ LBJ@ 33 34 35 36 3 7 40 41 42 43 I c 14 19 Io l@ CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @ 44 47 jThe operators and test engineer failed to realize that selecting a target !J:II] 1rod with defective position indication might result in improper sequencing.!

EIJ]J 1Precautionary statements have been added to the reactor control system IJ:II] Joperating procedure and the yellow engraved tag installed on the control IJJ3] 1room console adjacent to the rod selector switches. 7 B 9 FACILITY IJQ\ STATUS % POWER OTHER STATUS \.:::;J [ill] lliJ@ Io Io I o l@I N/A METHOD OF DISCOVERY DISCOVERY DESCRIPTION LJU@I Operator Observation 8 9 10 12 13 44 ACTIVITY CONTENT r:::;;., RELEASED OF RELEASE AMOUNT OF ACTIVITY [2]TI Lk.J@ UJ@I N/A I 8 9 10 11 44 45 46 LOCATION OF RELEASE @ N/A 45 PERSONNEL EXPOSURES 80 80 80 NUMBER r:;::;., TYPE DESCRIPTION

[2IZJ I o I o I o lLJ@ __ N_/_A _____________________

____. 7 8 9 11 12 13 PERSONNEL INJURIES Q 80 NUMBER Io I o I ol@.___N_:./_A

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___. 7 8 9 11 12 80 LOSS O* OR DAMAGE TO FACILITY 143' TYPE DESCRIPTION

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___. 7 8 9 10 80 PUBLICITY C\ ISSUED(,;\ . [ill]

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_. I I I I I I I I I I I I I NRC USE ONLY 7 8 9 10 58 69 80