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{{#Wiki_filter:dk REGULATORY INFORMATlON DISTRIBUTION SYSTEM (BIDS>DISTRIBUTION FOR INCOMING MATERIAL 50-335 DOCDATE: 08l25/78 DATE RCVD: 09/05/78 | {{#Wiki_filter:dk REGULATORY INFORMATlON DISTRIBUTION SYSTEM (BIDS> | ||
DISTRIBUTION FOR INCOMING MATERIAL 50-335 REC: OREILLY J P DOCDATE: 08l25/78 NRC DATE RCVD: 09/05/78 DGCTYPE: LETTER NQTAR IZED: NO COPIES RECEIVED | |||
==SUBJECT:== | ==SUBJECT:== | ||
LTR 1 ENCL 1 FORWARD1NG LICENSEE EVENT REPT (RG 50-335/78-029) | LTR 1 ENCL 1 FORWARD1NG LICENSEE EVENT REPT (RG 50-335/78-029) ON 07/28/78 CONCERNING NOTIFICATION BY APPLICANT"S VENDQR OF POTENTIAL PROBLEM WITI-I CERTAIN MOTOR OPERATED VALVES... WlATT. | ||
ON 07/28/78 CONCERNING NOTIFICATION BY APPLICANT"S VENDQR OF POTENTIAL PROBLEM WITI-I CERTAIN MOTOR OPERATED VALVES...WlATT.PLANT NAME: ST LUClE Ni REVIEWER INITIAL: X JM | PLANT NAME: ST LUClE Ni REVIEWER INITIAL: X JM 4~k<lHt44H~+++4H~~~>H~ DI TRIBUTION 0,- THIS MAT-RIAL IS AS DISTRIBUTOR FOLLOWS INITIAL: ~ | ||
DI TRIBUTION 0,-THIS MAT-RIAL IS AS FOLLOWS 4+>+>>o>~~+>>>~~~+ | 4+>+>>o>~~+>>>~~~+ | ||
INCIDENT REPORTS (DISTRIBUTION CODE A002)FOR ACTION: | INCIDENT REPORTS (DISTRIBUTION CODE A002) | ||
CGLL INS~~W/ENCL K SEYFRIT/IE+>W/ENCL LPDR'S FT PIERCEi FL.~<W/ENCL NS I C4F4: W/ENCL ACRS CAT B4".FW/16 | FOR ACTION: BR C<%W/4 ENCL INTERNAL: - ILE~'~~W/ENCL NRC PDRc~~~W/ENCL | ||
LTR 44 ENCL 44 SIZE: iP+iP+1P.8$%0H." H 0f CHl%8l%4%6f+%8Hf NHl%Sf SHHF 3HHf)HHf wc Rl%0~THE END | -HHa /g MIPC+~W/3 ENCL I 8c C SYSTEMS BR++W/ENCL EMERGENCY PLAN BR~<lJ/ENCL NQVAK/CHECK~~4lW/ENCL EEB~~~W/ENCL AD FOR ENG'.~.~W/ENCL PLANT SYSTEMS BR<<lJ/ENCL I IANAUER~H~W/ENCL | ||
~ | |||
AD FOR PLANT SYSTEMS>~W/ENCL AD FOR SYS Sc PROJ~%W/ENCL REACTOR SAFETY BR<4W/ENCL ENGINEERING BR+4W/ENCI VOLLMER/BUNCH++W/ENCL I'REGER/J. CGLL INS~~W/ENCL POIJER SYS BR++W/ENCL K SEYFRIT/IE+>W/ENCL EXTERNAI: LPDR'S FT PIERCEi FL.~<W/ENCL NS I C4F4: W/ENCL ACRS CAT B4".FW/16 ENCL DISTRIBUTION: LTR 44 ENCL 44 CQNTROL NBI a'782480/.33 SIZE: iP+iP+1P /le 't@ | |||
. 8$ %0H." H 0f CHl%8l %4%6f+%8Hf NHl %Sf SHHF 3HHf )HHf wc Rl % 0 ~ | |||
THE END | |||
==Dear Mr.O'Reilly:== | I FLORIDA POWER S<<LIGHT QOII<<IPANy August 25, 1978 PRN-LZ-78-2c3>7 P | ||
REPORTABLE OCCURRENCE 335-78-29 ST.LUCIE UNIT 1 DATE OF OCCURRENCE: | Mr. James P. O'Reilly, Director, Region Office of Inspection and Enforcement II <<N <<(ie | ||
JULY 28, 1978 | ~ | ||
Very truly yours, RB | U.S. Nuclear Regulatory Commission <<>1 230 Peachtree Street, N.N. Suite 1217 Atlanta, Georgia 30303 Pl C/l | ||
'NO PROBABL=CO'ISBCUBNC-S QIQ Our NSSS vendor notified us that we had a potential problem.~o>>with certain motor o crated valves (MOVs).All sus ect.safety-related MOVs outside containment were inspected and, ,"..if'necessary, repaired.;.All suspect safety-related MOVs inside containment will be inspected and, if necessary,~o!1 re aired at the first shutdown of sufficient length, but no later than the next refueling. | ==Dear Mr. O'Reilly:== | ||
1 | |||
CCCJAAXiuCX ASPQRT RSVIS)ON~LSBIFO VSNT V SAR AXPOATNO, COOS TVPS) | REPORTABLE OCCURRENCE 335-78-29 ST. LUCIE UNIT 1 DATE OF OCCURRENCE: JULY 28, 1978 TECHNICAL SPECIFICATION 6.9.1.9.C MOTOR OPERATED VALVES The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9 to provide 30-day notification of the subject occurrence. | ||
installed valves with improperly staked locking nuts have been or will be staked correctly. | Very truly yours, RB D. Schmidt Vice President Power Resources MAS/sn Attachment cc: Harold F. Reis, Esquire Director, Office of Inspection and Enforcement (30) | ||
I 6 3 I | Director, Office of Management Information and Program Control (3) 78248QJ33 PEOPLE .. SERVING PEOPLE | ||
I~'~~~QS'UQX'~ | |||
iuFc FQRM X88 U.*NUCLSAR RBGULATORY C IIMIS)CION | |||
!7 77! | |||
.)Pc~83C<<R))TICN WQX 7 Io NJSIJC:~~SSVXQ 78iCP)PT:CN GS | LlCEIXSEE EVE!MT REPORT | ||
All suspect safety-related MOV's inside containment will be inspected and, if necessaiy, repaired at.the first shutdown of sufficient length, but no later than the next refuels:ng (now scheduled'or.-April, 1979)It should be noted that of the 10 such operators insid'e containment, 4 are locked open and de-energized during power.operation (per Technical Specifications), 4 are locked closed and never opened'uri.ng power operation and.two (normally open,and not cycled)'ave no.safety-related function at power.Al-though we have had no failures during 3 years of testing and opera-tions, there is a potential for failure so this report is being made in accordance with Specification 6.9.1.C.'ADDITIONAL CAUSE DESCRIPTION and CORRECTIVE ACTIONS Some of these motor-operators have been assembled by valve vendors with the operator locking nut"staked" improperly. | '~0~i' Q, I I I I (PLSASB PRINT OR TYPB ALLRBCUIRSD INFORSIATIONI 1 | ||
The locking nut keeps the stem nut, which connects the motor drive sleeve to the valve stem, from moving axially.Such movement could disengage the stem nut from the valve stem and drive sleeve, thus rendering the valve inoperable. | QI | ||
Installed valves with improperly staked locking nuts have been or will be staked correctly as noted in the Event Description.}} | ~ol; Q Q 1 I 'C44588 COOK ,.QT, IJCXINSX I'I)44)dail 15 5 ) CS458 TV)4 IU 51 Ai 58 CAN' | ||
~OI 1 | |||
I 3 | |||
":::il"'0 5)7 di CCCXXT NVIISSA 67 SVSNT<<ATX 15 A !CAT O*TX 38 BVB)uTOBSCRIPTION 'NO PROBABL= CO'ISBCUBNC-S QIQ | |||
~OI 2 Our NSSS vendor notified us that we had a potential problem . | |||
~o >> with certain motor o crated valves (MOVs). All sus ect. | |||
safety-related MOVs outside containment were inspected and, | |||
,"..if 'necessary, repaired.;.All suspect safety-related MOVs inside containment will be inspected and, if necessary, | |||
~o!1 re aired at the first shutdown of sufficient length, but no later than the next refueling. | |||
IILJIIS iilc 04S'~1>>0 SY5TXV CAUSX CAU58 C~P. VALVS C OX CQCS SUSC<<08 )')PCiiaiiT COOS Icc C SUSC<<QX $ I'SCQCS | |||
~ol 1 | |||
8 3 g I)7 It IZ ScCVSNTIAI. | |||
I7 :5 Ig I | |||
5 0 | |||
CCCJAAXiuCX ASPQRT RSVIS)ON ~ | |||
~)~ ~ ~3) ~ | |||
LSBIFO VSNT V SAR AXPOATNO, COOS TVPS )IQ, Oli III4RI ~~ ~03 ~L | |||
~0 9 ~0 | |||
'11 I7 15 11 13 5 18 I 31 ACTION SU~AS SP*SC SIIV CCWN iic | |||
~ ~ AT.ACNMSNT 4PRQ4 PRIAISCCAIP, CQPIPCNI 4T TAXXN AC. IQN CN PLANT 1 STIICQ >>QVIIS SUSMIT i co PCAV Siia $ UPPIJXil IIANUPA<<,UASA LIS L'JS i@2 QISQ<<S I<<JI <<5 36 41 LES II 'S 43 44 41 CAUS" OBSCRII'TIOiu AiuOCORRB) iIVB ACilOiuS Qi o Some of these motor o erators have been assembled with the locking nut "staked" improperly. installed valves with improperly staked locking nuts have been or will be staked correctly. | |||
I I:"'JS 1 | |||
1 6 | |||
3 5 | |||
3 I ICATUS ACTIVITV I VI 1 | |||
~ | |||
E- ~I' 0 RSLPASSO CP ASLXASS 7 | |||
I Q22 IC CQNT44T | |||
~~QXA IO Ri | |||
!SASC'uiiaL XX)QSVASS | |||
)CVI8II 0 | |||
If IX S~ | |||
I3 | |||
<<33ISR STATVS NA AvovygQP ACTIv)TT QXS 44 44 N813)CO CP CISCQvSRv LD'QC: | |||
4$ | |||
45 Notified by NA OISCQVXR'V CSSCA)STION ~22 LQCAT!ou OP NSSS ASL~X Q28 veii5or 58 | |||
,uvsa, Tvcs QXSCA)p~cNQ. | |||
I | |||
~'~ | |||
3 | |||
~~QS'UQX'~ | |||
7 | |||
)\ASCNNXL IN7UA)83 !)7 i | |||
'iuA 0)'))i eA 0im' <<8!CA)P Ti C N, | |||
'IPii 7 Il 34 | |||
$ $ QP CR QANACX'TO!ICPU~I | |||
. )Pc ~ | |||
83C<<R))TICN WQX 7 Io NJSIJC:~ | |||
IRC USB CNLT | |||
~ | |||
~f SSVXQ 7 ~ | |||
44 78iCP)PT:CN GS j I ) I I | |||
i I | |||
[ I 68 30 iii4$1A 4 PIIss" P-R M.A. SCHOPPMAN p>>cuBI 305-552-3802 | |||
REPORTABLE OCCURREN 335-78-29 | |||
'aLicensee e Two Event Repor ADDITIONAL EVENT DESCRIPTION and PROBABLE CONSEQUENCES Our NSSS vendor notified us that another plant had experienced a motor operated valve (MOV) failure and that we had some safety-related MOV's with a potential for the same failure. After inves-tigation, other suspect MOV's were indentified in safety-related systems not supplied by the NSSS vendor. All suspect safety-re-lated MOV's outside containment were inspected and repaired necessary. | |||
if All suspect safety-related MOV's inside containment will be inspected and, if necessaiy, repaired at. the first shutdown of sufficient length, but no later than the next refuels:ng (now scheduled'or.-April, 1979) It should be noted that of the 10 such operators insid'e containment, 4 are locked open and de-energized during power. operation (per Technical Specifications), 4 are locked closed and never opened'uri.ng power operation and. two (normally open,and not cycled)'ave no. safety-related function at power. Al-though we have had no failures during 3 years of testing and opera-tions, there is a potential for failure so this report is being made in accordance with Specification 6.9.1.C. | |||
'ADDITIONAL CAUSE DESCRIPTION and CORRECTIVE ACTIONS Some of these motor-operators have been assembled by valve vendors with the operator locking nut "staked" improperly. The locking nut keeps the stem nut, which connects the motor drive sleeve to the valve stem, from moving axially. Such movement could disengage the stem nut from the valve stem and drive sleeve, thus rendering the valve inoperable. Installed valves with improperly staked locking nuts have been or will be staked correctly as noted in the Event Description.}} |
Latest revision as of 03:08, 3 February 2020
ML18127A649 | |
Person / Time | |
---|---|
Site: | Saint Lucie ![]() |
Issue date: | 08/25/1978 |
From: | Schmidt A Florida Power & Light Co |
To: | O'Reilly J NRC/RGN-II, NRC/IE |
References | |
PRN-LT-78-237 LER 1978-025-00 | |
Download: ML18127A649 (6) | |
Text
dk REGULATORY INFORMATlON DISTRIBUTION SYSTEM (BIDS>
DISTRIBUTION FOR INCOMING MATERIAL 50-335 REC: OREILLY J P DOCDATE: 08l25/78 NRC DATE RCVD: 09/05/78 DGCTYPE: LETTER NQTAR IZED: NO COPIES RECEIVED
SUBJECT:
LTR 1 ENCL 1 FORWARD1NG LICENSEE EVENT REPT (RG 50-335/78-029) ON 07/28/78 CONCERNING NOTIFICATION BY APPLICANT"S VENDQR OF POTENTIAL PROBLEM WITI-I CERTAIN MOTOR OPERATED VALVES... WlATT.
PLANT NAME: ST LUClE Ni REVIEWER INITIAL: X JM 4~k<lHt44H~+++4H~~~>H~ DI TRIBUTION 0,- THIS MAT-RIAL IS AS DISTRIBUTOR FOLLOWS INITIAL: ~
4+>+>>o>~~+>>>~~~+
INCIDENT REPORTS (DISTRIBUTION CODE A002)
FOR ACTION: BR C<%W/4 ENCL INTERNAL: - ILE~'~~W/ENCL NRC PDRc~~~W/ENCL
-HHa /g MIPC+~W/3 ENCL I 8c C SYSTEMS BR++W/ENCL EMERGENCY PLAN BR~<lJ/ENCL NQVAK/CHECK~~4lW/ENCL EEB~~~W/ENCL AD FOR ENG'.~.~W/ENCL PLANT SYSTEMS BR<<lJ/ENCL I IANAUER~H~W/ENCL
~
AD FOR PLANT SYSTEMS>~W/ENCL AD FOR SYS Sc PROJ~%W/ENCL REACTOR SAFETY BR<4W/ENCL ENGINEERING BR+4W/ENCI VOLLMER/BUNCH++W/ENCL I'REGER/J. CGLL INS~~W/ENCL POIJER SYS BR++W/ENCL K SEYFRIT/IE+>W/ENCL EXTERNAI: LPDR'S FT PIERCEi FL.~<W/ENCL NS I C4F4: W/ENCL ACRS CAT B4".FW/16 ENCL DISTRIBUTION: LTR 44 ENCL 44 CQNTROL NBI a'782480/.33 SIZE: iP+iP+1P /le 't@
. 8$ %0H." H 0f CHl%8l %4%6f+%8Hf NHl %Sf SHHF 3HHf )HHf wc Rl % 0 ~
THE END
I FLORIDA POWER S<<LIGHT QOII<<IPANy August 25, 1978 PRN-LZ-78-2c3>7 P
Mr. James P. O'Reilly, Director, Region Office of Inspection and Enforcement II <<N <<(ie
~
U.S. Nuclear Regulatory Commission <<>1 230 Peachtree Street, N.N. Suite 1217 Atlanta, Georgia 30303 Pl C/l
Dear Mr. O'Reilly:
REPORTABLE OCCURRENCE 335-78-29 ST. LUCIE UNIT 1 DATE OF OCCURRENCE: JULY 28, 1978 TECHNICAL SPECIFICATION 6.9.1.9.C MOTOR OPERATED VALVES The attached Licensee Event Report is being submitted in accordance with Technical Specification 6.9 to provide 30-day notification of the subject occurrence.
Very truly yours, RB D. Schmidt Vice President Power Resources MAS/sn Attachment cc: Harold F. Reis, Esquire Director, Office of Inspection and Enforcement (30)
Director, Office of Management Information and Program Control (3) 78248QJ33 PEOPLE .. SERVING PEOPLE
iuFc FQRM X88 U.*NUCLSAR RBGULATORY C IIMIS)CION
!7 77!
LlCEIXSEE EVE!MT REPORT
'~0~i' Q, I I I I (PLSASB PRINT OR TYPB ALLRBCUIRSD INFORSIATIONI 1
QI
~ol; Q Q 1 I 'C44588 COOK ,.QT, IJCXINSX I'I)44)dail 15 5 ) CS458 TV)4 IU 51 Ai 58 CAN'
~OI 1
I 3
":::il"'0 5)7 di CCCXXT NVIISSA 67 SVSNT<<ATX 15 A !CAT O*TX 38 BVB)uTOBSCRIPTION 'NO PROBABL= CO'ISBCUBNC-S QIQ
~OI 2 Our NSSS vendor notified us that we had a potential problem .
~o >> with certain motor o crated valves (MOVs). All sus ect.
safety-related MOVs outside containment were inspected and,
,"..if 'necessary, repaired.;.All suspect safety-related MOVs inside containment will be inspected and, if necessary,
~o!1 re aired at the first shutdown of sufficient length, but no later than the next refueling.
IILJIIS iilc 04S'~1>>0 SY5TXV CAUSX CAU58 C~P. VALVS C OX CQCS SUSC<<08 )')PCiiaiiT COOS Icc C SUSC<<QX $ I'SCQCS
~ol 1
8 3 g I)7 It IZ ScCVSNTIAI.
I7 :5 Ig I
5 0
CCCJAAXiuCX ASPQRT RSVIS)ON ~
~)~ ~ ~3) ~
LSBIFO VSNT V SAR AXPOATNO, COOS TVPS )IQ, Oli III4RI ~~ ~03 ~L
~0 9 ~0
'11 I7 15 11 13 5 18 I 31 ACTION SU~AS SP*SC SIIV CCWN iic
~ ~ AT.ACNMSNT 4PRQ4 PRIAISCCAIP, CQPIPCNI 4T TAXXN AC. IQN CN PLANT 1 STIICQ >>QVIIS SUSMIT i co PCAV Siia $ UPPIJXil IIANUPA<<,UASA LIS L'JS i@2 QISQ<<S I<<JI <<5 36 41 LES II 'S 43 44 41 CAUS" OBSCRII'TIOiu AiuOCORRB) iIVB ACilOiuS Qi o Some of these motor o erators have been assembled with the locking nut "staked" improperly. installed valves with improperly staked locking nuts have been or will be staked correctly.
I I:"'JS 1
1 6
3 5
3 I ICATUS ACTIVITV I VI 1
~
E- ~I' 0 RSLPASSO CP ASLXASS 7
I Q22 IC CQNT44T
~~QXA IO Ri
!SASC'uiiaL XX)QSVASS
)CVI8II 0
If IX S~
I3
<<33ISR STATVS NA AvovygQP ACTIv)TT QXS 44 44 N813)CO CP CISCQvSRv LD'QC:
4$
45 Notified by NA OISCQVXR'V CSSCA)STION ~22 LQCAT!ou OP NSSS ASL~X Q28 veii5or 58
,uvsa, Tvcs QXSCA)p~cNQ.
I
~'~
3
~~QS'UQX'~
7
)\ASCNNXL IN7UA)83 !)7 i
'iuA 0)'))i eA 0im' <<8!CA)P Ti C N,
'IPii 7 Il 34
$ $ QP CR QANACX'TO!ICPU~I
. )Pc ~
83C<<R))TICN WQX 7 Io NJSIJC:~
IRC USB CNLT
~
~f SSVXQ 7 ~
44 78iCP)PT:CN GS j I ) I I
i I
[ I 68 30 iii4$1A 4 PIIss" P-R M.A. SCHOPPMAN p>>cuBI 305-552-3802
REPORTABLE OCCURREN 335-78-29
'aLicensee e Two Event Repor ADDITIONAL EVENT DESCRIPTION and PROBABLE CONSEQUENCES Our NSSS vendor notified us that another plant had experienced a motor operated valve (MOV) failure and that we had some safety-related MOV's with a potential for the same failure. After inves-tigation, other suspect MOV's were indentified in safety-related systems not supplied by the NSSS vendor. All suspect safety-re-lated MOV's outside containment were inspected and repaired necessary.
if All suspect safety-related MOV's inside containment will be inspected and, if necessaiy, repaired at. the first shutdown of sufficient length, but no later than the next refuels:ng (now scheduled'or.-April, 1979) It should be noted that of the 10 such operators insid'e containment, 4 are locked open and de-energized during power. operation (per Technical Specifications), 4 are locked closed and never opened'uri.ng power operation and. two (normally open,and not cycled)'ave no. safety-related function at power. Al-though we have had no failures during 3 years of testing and opera-tions, there is a potential for failure so this report is being made in accordance with Specification 6.9.1.C.
'ADDITIONAL CAUSE DESCRIPTION and CORRECTIVE ACTIONS Some of these motor-operators have been assembled by valve vendors with the operator locking nut "staked" improperly. The locking nut keeps the stem nut, which connects the motor drive sleeve to the valve stem, from moving axially. Such movement could disengage the stem nut from the valve stem and drive sleeve, thus rendering the valve inoperable. Installed valves with improperly staked locking nuts have been or will be staked correctly as noted in the Event Description.