ML17252B537: Difference between revisions

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| document type = Licensee Event Report (LER)
| document type = Licensee Event Report (LER)
| page count = 2
| page count = 2
}}
=Text=
{{#Wiki_filter:* ltft<. "'d-a'ftW 31Jf/. 'O'.*'!. .. ftot.:c. 'l:ltW 'R!GotJ( rtrR1' 'Ctil61M 1 ss1d"'1 *7-771' .; .* * :
* I * .,. * '/ .*. *:,_/ I * *A . . . . /< . + r. l .* I I* ' 1.0. . . . REQUIRED'INFORMATIONI l ' ' ' ' ... . . *1 . *: .. . 6*;.. .. . ' .' "* ' " ... , .. . .. ' ' .. ' ' "' '. . ' lEJ.:r rf ''11 D:j. Rr,:s I; o:fo** 1'6 Io* .. 1.:...*. ro: 10:-; l@F*4f1*:r1*1:1 T r.101*' 'I.' . * -8:. 9* LICENS.EE'COOE'.* :*1.4 ,15:,* ... * . ,.LICENSE.NUMBER ... * :. ..*,. 25:*. '.26-. *: LICENSE:.TYPE .. J.O: .. 57:CA'L58* .. CON'.T' **
* _:' ... , , .. * *.* ........ * ;ITIJ: . . (t l@J.:oj; *s* 1 *a-1*0lo*12* j:'3 Ti-'' &#xa9;It 12 TO* 12** 1&: '16** .. *101*r 1>2: l*3l'o:1 a*.*I 0 rev . 8-.. . 60' . ' 61 . ' DOCKET NUMBER. '. . *ss.. 69, EVENT.CATE:** 74 75.. REPORT CATE ; ' 80:
* EVE.NT'DESCRIPTION*ANO PROBABLE.CONSEQUENCES@ '.. . . . ,..: ..,..o .... l"""2""'j'.'IDuring *a* reactor'*s*cram, failed *to receive CRD volume : HI,;_Hi Ievei: alarm*.* The' saf'ety* L . I . . . . . . . . . *. . . . . . . . .. ::nIJ. lsignifiCance* 1of this since 'it did. n_ot affect* the scram' function. and
* l : 0 j 4-. r jthe scram* instrument* level switches .. wete opetab*le<. Public health* and F ' : 0 ! s.r. 1'safety were Jlot: :This *iS* the. first. occurrence of' this :type at L' :o : o I 1 I '---------------------------------------.,..----------... "* rs so* . . SYSTEM'. CAUSE:. 1* CAUSE*. COMP, VALVE'* CODE:* CODE' ' ' SUBCOOE COMPONENT'COOE. SUBCOOE: *suecooE' 1* I 1 .. EI@ w@.< l.s ... 1@* I I l'N I R I u I@ lli.:...]@' w@ 9 10. '11 12 *13, 1B 19. 20* SEQUENTIAL OCCUR*RENCE"
* REPORT . REVISION. ,. ' I I R;TRZ.1&deg;6-t ,, I /L roc&deg;i&deg;;* L ' . I L' IN;* 1 ' 22-.. 23 .. 24, 26 27 28* 29:* JO 31. ACTION FUTURE. <, EFFECT SHUTOOWN . . .. , . ATIACHMENT'*.* NPRQ.4: PRIME COMP:''. 'COMPONENT * . TAKEN" ACTION ; ONPl:ANT .:*:'._.METHOD-,.*: .... *., : *FO.RM:>UB. * ... SUPPLIER': , MANUFACTURER':' .. W@W:@r, ... .. *.I o I o I" o I o t . l!J.@ .L!!J.@.' Ll.1@.:.*' IN* 11 19 11 *I@ 33.' 34 . ' 35 . J6.,, ' ' ' *.J'] ' . 40,.. 41 ' ' ' 42 43,. 44' ' ' 47 CAUSE'DESCRIPTION.ANO:CORRECTIVE:ACTIONS*@* * * } 1 Io fr TI1e cause was. attributed to cable* length* and* routing*:;* transducer placement and mounting,1 *. : 1 ! 1 1 land redundant transducer signal interference .. *The cables .. were shortened-an& rerouted L : 1 I 2 I I transducer placement-. optimized* mounting mod-ified, and. transducer synchronize'd to the. i* :IJJJ. , . saine 'internal The: was. *then satisfactorily-tes.ted. The *same* improvementsl :Im I will be mad.e on Dresden' Unit: 3. ; 8 9'. I 80 % POWER ' .* @ DISCOVERY DESCRIPTION @) :ITIJ' l.x..J@: I 0 I 0 I 0 1@)1>. N/A. 1. .... l_O.._p_er_a_t_or_:._O_b_se_rv_at_i_o_n ______ ____.L 8 9 -10* .
* 12:* 1'.l 44.. 45 AS 80 ACTIVITY CONTENT ' . C\ . OF RELEASE. .
* AMOUNT OF ACTIVITY LOCATION OF* . N/A . 44 ts. N/A PERSONNEl:.*EXP.OSURES: . 'r.:;;:;\ . 80: ' NUMBER ' ; ' TYPE :II!l 1 o Io Io l@Ll.J@ __ . ____ N/_.A. ________ __,.,. ____________ __, 8 3. 11 12; 13 80 . PERSONNEL INJURIES. . : /;;;\*. 'NUMBER . : .. : :IE. j' ol. ol ol@) :. . . . N/A. 8, 9 11 * ._i2-:*---.---------------------........ -----------------a'"'o. *. LOSS OF-OR DAMAGE1TO*FAC1LITY:*f.G\*
* TYPE DESCRIPTlpN * . . . *. ** ,.:....L..:.J. LU@ ''' I ' ' . N/ A *. ' ' 8: .'9 10 ' ' '. *.: . .. .. L Lli..Je;I . .*
* I . NI A ,, a .. 9 10 I -]::r.*"}..';t.* .* "-. ao* . NRC USE ONLY l *D 1
* I I: J *. I I I I Id I -I I I 68 69 ao.;;; 
* * . .* DEVIATION* REPORT * .* ' JJVR:.-No.*. . . * * :* * . STA':. UNIT.' YEAR?. NO:. It'-* !2 -2. -* 80--.: 8L . , PART. ll*Jl Tl&#xa3;. OF-DEVtl ATl'ON:: * ...... OCCU.RREO . . *.12 80 2215* TIME. ' . . " DATE SYSTEM**AFFECTEO> . 300, ..
* PLANT CONDITIONS,* . . .. . ' Control Rod* Dr.ive: System*.*. . MODE' Run* PWR'(MWT) . 368 TESTING . . o* r,;-i** ... YES'" NO:* DESCRIPTION OF EVENT.
* During**a: reactor scram*,, .. failed F-21. "SDV*Hi Hi".<-. ' ., DESCRIPTION OF CAUSE. Unknown *at this* *t iiiie* *.. --. OTHER APPL I *I NFORMAT.I ON N/A. EQUIPMENT CiJ.Yes* DR' FAILU.RE. . Q:No., " N/A WR: NO; .. Dl0353 . PART 2. I OPERATING ENGi NEERS COMMENTS *
* D*. McDowell 12 80. *RESPONSIBLE SUPERVISOR* DATE Complet.ed SDV air test,. instrument. level. swit.ch test .and: ihdepend.ent UT verification. Initiated ind'ependent*. manual UT yeri*fication of SDV once' per< shift .on' Units* 2 and 3. . . SAFE.TY-TYPE'. OF DEVIATION EVENT OF* POTENT! AL. ** TE:CH: SP'EC' ,, NC&deg;N._ REPORTABLE" .. ANNUAL RELATED REPORTABLE OCCURRENCE::
* PUBL:lC: I NTERE:sr: .. ** . VIOLATION-OCCURRENCE REPORT I NG. . WR ISSUED "0: DAY .o*. 1 ?CFR2.F .. GI. 14 YES: YES D' 0.,. o. *** [!]* DAY: NOTI F:t*CATlON . No .. o* NO D 6.6.B.2.b .. *ACT! ON ITEM NO*. PROMPT* ON-.. S I TE NOTIFICATION . "' -R. M. 12 80' -* m, 80-A6 I 03L-O" Tl TL&#xa3; DATE TIME ' Tl TLE
* DATE TIME, **. 24-HOUR NRC NOTJ.F:l CAT:J ON . PROMPT OFF-SI TE NOTI FICATl'ON DT?H i NRC..;ENS Ehone* 12/2/80 2300 hrs. F. Palmer 12-10-80 *9*:03 AM REG l*ON,
* I* I I DATE Tl.ME** Tl TLE. DATE'. TIME DTGM .. ., . REGION,! I ! &. DOL* CATE TIME. Tl TLE: . DATE TI ME " . . RESPONSl.BLE COMP:ANY'.OFF:lCER *INFORMED OF IOCFR2J CONDI Tl ONS AND THEIR REPORT TO* NRC * ... TITLE DATE TIME c I . . REVIEW* AN.D .COMPLETED' -John W. Wuj ciga OPERATING. ENGINEER D.ATF.: \ RESOlUT I ON APPROVED. ANO' AUTHOR i FOR. 0 I' STR i SU Ti ON *
* aa-s,n*s:. 10*11** !FoRJ. I . J, ...... *,*'-' ... ** 12 80 DATE 12/s.}Pc DATE 
}}
}}

Revision as of 04:03, 25 April 2018

LER 80-046-00 for Dresden 2 Regarding a Failure to Receive CRD Volume During a Reactor Scram
ML17252B537
Person / Time
Site: Dresden Constellation icon.png
Issue date: 12/30/1980
From:
Commonwealth Edison Co
To:
NRC/RGN-III
References
LER 80-046-00
Download: ML17252B537 (2)
v • d • e


Text

  • ltft<. "'d-a'ftW 31Jf/. 'O'.*'!. .. ftot.:c. 'l:ltW 'R!GotJ( rtrR1' 'Ctil61M 1 ss1d"'1 *7-771' .; .* * :
  • I * .,. * '/ .*. *:,_/ I * *A . . . . /< . + r. l .* I I* ' 1.0. . . . REQUIRED'INFORMATIONI l ' ' ' ' ... . . *1 . *: .. . 6*;.. .. . ' .' "* ' " ... , .. . .. ' ' .. ' ' "' '. . ' lEJ.:r rf 11 D:j. Rr,:s I; o:fo** 1'6 Io* .. 1.:...*. ro: 10:-; l@F*4f1*:r1*1:1 T r.101*' 'I.' . * -8:. 9* LICENS.EE'COOE'.* :*1.4 ,15:,* ... * . ,.LICENSE.NUMBER ... * :. ..*,. 25:*. '.26-. *: LICENSE:.TYPE .. J.O: .. 57:CA'L58* .. CON'.T' **
  • _:' ... , , .. * *.* ........ * ;ITIJ: . . (t l@J.:oj; *s* 1 *a-1*0lo*12* j:'3 Ti- ©It 12 TO* 12** 1&: '16** .. *101*r 1>2: l*3l'o:1 a*.*I 0 rev . 8-.. . 60' . ' 61 . ' DOCKET NUMBER. '. . *ss.. 69, EVENT.CATE:** 74 75.. REPORT CATE ; ' 80:
  • EVE.NT'DESCRIPTION*ANO PROBABLE.CONSEQUENCES@ '.. . . . ,..: ..,..o .... l"""2""'j'.'IDuring *a* reactor'*s*cram, failed *to receive CRD volume : HI,;_Hi Ievei: alarm*.* The' saf'ety* L . I . . . . . . . . . *. . . . . . . . .. ::nIJ. lsignifiCance* 1of this since 'it did. n_ot affect* the scram' function. and
  • l : 0 j 4-. r jthe scram* instrument* level switches .. wete opetab*le<. Public health* and F ' : 0 ! s.r. 1'safety were Jlot: :This *iS* the. first. occurrence of' this :type at L' :o : o I 1 I '---------------------------------------.,..----------... "* rs so* . . SYSTEM'. CAUSE:. 1* CAUSE*. COMP, VALVE'* CODE:* CODE' ' ' SUBCOOE COMPONENT'COOE. SUBCOOE: *suecooE' 1* I 1 .. EI@ w@.< l.s ... 1@* I I l'N I R I u I@ lli.:...]@' w@ 9 10. '11 12 *13, 1B 19. 20* SEQUENTIAL OCCUR*RENCE"
  • REPORT . REVISION. ,. ' I I R;TRZ.1°6-t ,, I /L roc°i°;* L ' . I L' IN;* 1 ' 22-.. 23 .. 24, 26 27 28* 29:* JO 31. ACTION FUTURE. <, EFFECT SHUTOOWN . . .. , . ATIACHMENT'*.* NPRQ.4: PRIME COMP:. 'COMPONENT * . TAKEN" ACTION ; ONPl:ANT .:*:'._.METHOD-,.*: .... *., : *FO.RM:>UB. * ... SUPPLIER': , MANUFACTURER':' .. W@W:@r, ... .. *.I o I o I" o I o t . l!J.@ .L!!J.@.' Ll.1@.:.*' IN* 11 19 11 *I@ 33.' 34 . ' 35 . J6.,, ' ' ' *.J'] ' . 40,.. 41 ' ' ' 42 43,. 44' ' ' 47 CAUSE'DESCRIPTION.ANO:CORRECTIVE:ACTIONS*@* * * } 1 Io fr TI1e cause was. attributed to cable* length* and* routing*:;* transducer placement and mounting,1 *. : 1 ! 1 1 land redundant transducer signal interference .. *The cables .. were shortened-an& rerouted L : 1 I 2 I I transducer placement-. optimized* mounting mod-ified, and. transducer synchronize'd to the. i* :IJJJ. , . saine 'internal The: was. *then satisfactorily-tes.ted. The *same* improvementsl :Im I will be mad.e on Dresden' Unit: 3. ; 8 9'. I 80 % POWER ' .* @ DISCOVERY DESCRIPTION @) :ITIJ' l.x..J@: I 0 I 0 I 0 1@)1>. N/A. 1. .... l_O.._p_er_a_t_or_:._O_b_se_rv_at_i_o_n ______ ____.L 8 9 -10* .
  • 12:* 1'.l 44.. 45 AS 80 ACTIVITY CONTENT ' . C\ . OF RELEASE. .
  • AMOUNT OF ACTIVITY LOCATION OF* . N/A . 44 ts. N/A PERSONNEl:.*EXP.OSURES: . 'r.:;;:;\ . 80: ' NUMBER ' ; ' TYPE :II!l 1 o Io Io l@Ll.J@ __ . ____ N/_.A. ________ __,.,. ____________ __, 8 3. 11 12; 13 80 . PERSONNEL INJURIES. . : /;;;\*. 'NUMBER . : .. : :IE. j' ol. ol ol@) :. . . . N/A. 8, 9 11 * ._i2-:*---.---------------------........ -----------------a'"'o. *. LOSS OF-OR DAMAGE1TO*FAC1LITY:*f.G\*
  • TYPE DESCRIPTlpN * . . . *. ** ,.:....L..:.J. LU@ I ' ' . N/ A *. ' ' 8: .'9 10 ' ' '. *.: . .. .. L Lli..Je;I . .*
  • I . NI A ,, a .. 9 10 I -]::r.*"}..';t.* .* "-. ao* . NRC USE ONLY l *D 1
  • I I: J *. I I I I Id I -I I I 68 69 ao.;;;
  • * . .* DEVIATION* REPORT * .* ' JJVR:.-No.*. . . * * :* * . STA':. UNIT.' YEAR?. NO:. It'-* !2 -2. -* 80--.: 8L . , PART. ll*Jl Tl£. OF-DEVtl ATl'ON:: * ...... OCCU.RREO . . *.12 80 2215* TIME. ' . . " DATE SYSTEM**AFFECTEO> . 300, ..
  • PLANT CONDITIONS,* . . .. . ' Control Rod* Dr.ive: System*.*. . MODE' Run* PWR'(MWT) . 368 TESTING . . o* r,;-i** ... YES'" NO:* DESCRIPTION OF EVENT.
  • During**a: reactor scram*,, .. failed F-21. "SDV*Hi Hi".<-. ' ., DESCRIPTION OF CAUSE. Unknown *at this* *t iiiie* *.. --. OTHER APPL I *I NFORMAT.I ON N/A. EQUIPMENT CiJ.Yes* DR' FAILU.RE. . Q:No., " N/A WR: NO; .. Dl0353 . PART 2. I OPERATING ENGi NEERS COMMENTS *
  • D*. McDowell 12 80. *RESPONSIBLE SUPERVISOR* DATE Complet.ed SDV air test,. instrument. level. swit.ch test .and: ihdepend.ent UT verification. Initiated ind'ependent*. manual UT yeri*fication of SDV once' per< shift .on' Units* 2 and 3. . . SAFE.TY-TYPE'. OF DEVIATION EVENT OF* POTENT! AL. ** TE:CH: SP'EC' ,, NC°N._ REPORTABLE" .. ANNUAL RELATED REPORTABLE OCCURRENCE::
  • PUBL:lC: I NTERE:sr: .. ** . VIOLATION-OCCURRENCE REPORT I NG. . WR ISSUED "0: DAY .o*. 1 ?CFR2.F .. GI. 14 YES: YES D' 0.,. o. *** [!]* DAY: NOTI F:t*CATlON . No .. o* NO D 6.6.B.2.b .. *ACT! ON ITEM NO*. PROMPT* ON-.. S I TE NOTIFICATION . "' -R. M. 12 80' -* m, 80-A6 I 03L-O" Tl TL£ DATE TIME ' Tl TLE
  • DATE TIME, **. 24-HOUR NRC NOTJ.F:l CAT:J ON . PROMPT OFF-SI TE NOTI FICATl'ON DT?H i NRC..;ENS Ehone* 12/2/80 2300 hrs. F. Palmer 12-10-80 *9*:03 AM REG l*ON,
  • I* I I DATE Tl.ME** Tl TLE. DATE'. TIME DTGM .. ., . REGION,! I ! &. DOL* CATE TIME. Tl TLE: . DATE TI ME " . . RESPONSl.BLE COMP:ANY'.OFF:lCER *INFORMED OF IOCFR2J CONDI Tl ONS AND THEIR REPORT TO* NRC * ... TITLE DATE TIME c I . . REVIEW* AN.D .COMPLETED' -John W. Wuj ciga OPERATING. ENGINEER D.ATF.: \ RESOlUT I ON APPROVED. ANO' AUTHOR i FOR. 0 I' STR i SU Ti ON *
  • aa-s,n*s:. 10*11** !FoRJ. I . J, ...... *,*'-' ... ** 12 80 DATE 12/s.}Pc DATE
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