05000311/LER-1982-032

LER 82-032/03L-0:on 820428,steam Generator Feedwater Pump 21 Tripped,Causing Axial Flux to Go Outside Target Band.Control Rod Low Low Insertion Limit Alarm Received.Caused by Attempted Sabotage

ML20053E178
Person / Time
Site:	Salem
Issue date:	05/19/1982
From:	Frahm R Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20053E169	List: 05000311/LER-1982-032, Forwards LER 82-032/03L-0.Detailed Event Analysis Encl
References
LER-82-032-03L, LER-82-32-3L, NUDOCS 8206070673
Download: ML20053E178 (1)

LER-2082-032,

Event date:
Report date:
3112082032R00 - NRC Website

text

ww) LICENSEE EVENT REPORT (PLE ASE PRINT C3 TYPE ALL RELUIRE3 INFCMATION)

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[OTil in 13 is lo is 12 l@l of ol -l ol ol of of ol -l oi oI@l 25 264l 1111 LICENSE TYPE il 1l@l JO i

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8 9 LICEN5EE CODE 14 16 LICENSE NUWBER 7

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EVENT DATE 74 7S RE PORT D ATE 7 8 60 61 DOCK ET NUUSE R EVENT DESCRIPTION AND PROBABLE CONSEOUENCES h y l At 1546 hours0.0179 days <br />0.429 hours <br />0.00256 weeks <br />5.88253e-4 months <br />, April 28, 1982, due to a trip of No. 21 Steam Generator Feedwater Pump l g g g 3, g(SGFP), the axial fl'ux difference (AFD) went out of the +6,-9% target band, and Action l g { Statement 3.2.1.a.2.a was entered. The Control Rod Iow Low Insertion Limit alarm was l 1553 hours0.018 days <br />0.431 hours <br />0.00257 weeks <br />5.909165e-4 months <br />. The operator observed that Bank D was 7 steps below the in- l g g greceived at 0 6 lsertion limit, and Action Statement 3.1.3.5 was entered. This occurrence constituted l l

po-[7j goperation in a degraded mode in accordance with Technical Specification 6.9.1.9.b.

l g g  ;(82-016) a0 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SU8 CODE SUBCODE O 9 I c l u l@ U@ Lzj@ l e l u l s l e i x l x i@ W@ U @ 13 10 19 20 8 9 to It 12 7

OCCUR RE NCE REPORT RE Vl510N SE QUE NTI AL REPORT NO. CODE TYPE NO.

LER RO h ,RE,P,ga; l8l2l EVENT YEAR d l0l3l2l d l0 l3 l W b y 32

,_21 23 24 26 27 28 29 30 31 22 HOUR $ 58 i FOR S. $7 Li MANUFACTURER T K N A O ON PL ' 7 MET Lx_J@l. zJ@ l_nJ@ Lz_J@

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44 47 33 34 JS CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 1 O lThe cause of No. 21 SGFP trip was determined to be attempted sabotage, in conjunction l

, , jwith a labor dispute. The operator immediately stepped rods out to restore the banks l gto within limits, and at 1554 hours0.018 days <br />0.432 hours <br />0.00257 weeks <br />5.91297e-4 months <br />, Action Statement 3.1.3.5 was terminated. At 1621 l

, 7 l

, 3 l hours, the AFD came back into the target band, with a total of 35 minutes penalty ac-l

, , l cumulated, and Action Statement 3.2.1.a.2.a was terminated.

7 8 9 OTHER STATUS is OV Y DISCOVERY DESCRIPTION 5A 5  % POWER

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NA 44 as so PERSONNEL E*POSURES NUMBER DESCRIPTION l  !

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, LOSS OF OR DAMAGE TO FACILITY

! TYPE DESCRIPTION 1

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80 R._Frahm PHONE: (609) 541-Sonn 620  ;

• NAME OF PREPARER

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