ML19340D055
| ML19340D055 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 12/15/1980 |
| From: | Aswell D, Hart J, Padalino J LOUISIANA POWER & LIGHT CO. |
| To: | Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, W3K80-0013, NUDOCS 8012190540 | |
| Download: ML19340D055 (5) | |
Text
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LOUISIANA P O W E R & L I G H T! p a sox 6008
- NEW oALEt.NS. LodtSIANA 70174 242 asuncNee sincer
- (5041 366-2345
' 200!?s$
O L ASWELL December 15, 1980 vc. p,..e= %,mu.
W3K80-0013 Q-3-A35.07.19 K. V. Seyfrit, Director U.S. Nuclear Regulatory Cocraission Office of Inspection and Enforcement 611 Ryan Plaza Drive Suite 1000 Arlington, Texas 76012 Subj ec t: h'aterford SES Unit No. 3 Docket No. 50-382 Interim Report No. 19
" Target Rock Motor Operated Valves-Bushing Not Staked"
Reference:
LP&L Telecon with NRC dated November 12, 1980 reporting Potential Reportable Incident No. 31
Dear Mr. Seyfrit:
In accordance with the requirements of 10CFR50.55(e) we are hereby providing two copies of the Interim Report of Significant Deficiency No. 19 " Target Rock Motor Operated Valves - Bushing Not Staked". The final report will be submitted by July 31, 1981.
During the investigation of the failure of a High Pressure Safety Injection (HPSI). header shut-off valve at another nuclear facility, the threaded bushing was found loose. This deficiency could cause degradation in operation of the safety related HPSI and/or LPSI systems.
The threaded bushings will be corrected as specified in the attached interi= report and inspected prior to pre-op testing and commercial operation.
Yours very truly, u-.
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D. L. Aswell
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Enclosure 80 12790 7%
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Mr. K. V. "Seyfrit cc: Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C. 20555 (with 15 copies of report)
Director Office of Management Information and Program Control U. S. Nuclear Regulatory Co= mission Washington, D. C.
20555 (with I copy of report) l l
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e LOUISIA!TA POWER A!IO LI7:C CO. PAIY V
WATERFORD SES U:!IT :*0. 3 s
6 INTERIM REFORT ^F SIG'iIFICANT DEFICIE;IY :!0.19 l
TARGET ROCK 'OTCR ODERATED VAL'.TS - BUSHI:IG !!OT STAKED i
9 Reviewed by
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adalino - Project Engineer '
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Corrective Action Combustion Engineering issued Field Action Request (FAR) No. Il5W on October 3, 1980. C.is FA2 describes the precedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completien date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
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a Interim Report of Significant Construction Deficiency No. 19 TARGET ROCK MOTOR OPERATED VALVES - BUSHING NOT STAKED Introduction This report is submitted pursuant to 10CFR50.55(e).
It des *bes a deficiency with the design of the subject valves which was detected -
20ther nuclear generating facility.
Backcround By telephone conversation on November 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Conmission concerning a deficiency which had earlier been identified in NRC IE Circular No. 80-Oh Section IV dated March lk,1980. Although this circular stated that no written response was required from licensees, further evaluation indicated that the deficient condition vould be reportable under the terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Engineerint for use in the '.Taterford SES Unit No. 3 Nuclear Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Oh dated March lb,1980, an inveatigation of the failure of a High Pressure Safety Injection (HPSI) header shut-off valve at another nuclear generating station revealed that the threaded bushing was loose. The bushing was not staked or otherwise secured to prevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full onen limit switch is rear driven by the valve operator and movement of the bushin can alter the relationship between stem rotation and linear travel such that travel in the open direction nay be terminated prematurely by the limit switch.
Analysis cf Safety Inclications If one or more of the bushings in either the HPSI or LPSI shut off valves were to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve not fully open, safety injoetion flow might then be restricted to a value less than uns assur.ed in the FSAR. Thus, there vould be degradation in Operation of the safety related HPCI and/or LPSI systems.
Corrective Action Combustion Engineering issued Field Action Request (FAR) No. 115W on October 3, 1930. Ois FAR describes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
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Interim Report of Significant Construction Oeficiency ::c.19 TARGIT ROCK MOTOR OPERATED VALVES - BUSEIU1 !!OT STAKED Introduction This report is submitted'tursuant to 10CFR50.55(e). It describqs a deficiency with the design of the subject valves which was detected at another nuclear generatine facility.
Backzround By telephone contersation on November 12, 1930, Louisiana Power and Light notified the Nuclear Regulatory Co==ission concerning a deficiency which had earlier been identified in HEC IE Circular No. 80-0h Section IV dated :: arch 14, 1980. Although this circular stated that no written response was required frcm licensees, further evaluation indicated that the deficient condition would be reportable under the terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Cembustion Engineerinc for use in the Waterford SES Unit No. 3 Nuclear Steam Supply System.
Description of reficiency As detailed in IE Circular 80-Oh dated March lb,1980, an investigation of the failure of a Eich "ressure Safety Injection (EPSI) header shut-off valve at another nuclear generstine station revealed that the threaded tushing was loose. The bushing was not staked or otherwise secured to prevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is rear driven by the valve operator and movement of the bushine can alter the relationship between stem rotation and linear travel such that travel in the open direction may be terminated prematurely by the limit switch.
Analysis cf Safety Innlications If one or more of the bushings in either the EPSI or LFSI shut off valves were to loosen and back out, valve stem travel eculd be terminated prematurely by the limit switch, and with the valve not fully open, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there vould be degradation in operation of the safety related EPSI and/or LFSI systems.
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Corrective Action Combustion Engineering issued Field Action Request (FAR) No. Il5W on October 3, 1930. Tr.is FAR describes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Ar.ti:icated completion date for these repairs at the Waterford 3 constructier. Site is set for June 30, 1981.
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Interim Report of Significant Construction eficiency No. 19 TARGET ROCK MOTOR OPERATED VALVIS - BUSHING NOT STAKED Introduction This report is submitted pursuant to 10CFR50.55(e). It describe,s a deficieucy with the design of the subject valves which was detected at another. nuclear generating facility.
Background
By telephone conversation on November 12, 1930, Louisiana Power and Light notified the Nuclear Regulatory Consission concerning a deficiency which had earlier been identified in NRC IE Circular No. 80-Oh Section IV dated March 14, 1980. Although this circular stated that no written response was required from licensees, further evaluation indicated that the deficient condition would be reportable under the terms of 10CF350.55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Engineering for use in the Waterford SES Unit No. 3 Nuclent Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Oh dated March 11, 1980, an investigation of the failure of a Hich Pressure Safety Injection (EPSI) header shut-off valve at another nuclear senerating station revealed that the threaded buching was loose. The bushing was not staked or otherwise secured to trevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is zeer driven by the valve operator and movement of the bushine can alter the relationship between stem rotation and linear travel such that travel in the open iirection nay be terminated prematurely by the limit switch.
Analysis of Safety Imulications If one or more of the bushings in either the EPSI or LPSI shut off valves were sto loosen and tack out, valve stem travel c:uld be terminated prematurely by the_ limit switch, and with the valve not fully open, safety injection flow m1 ht 6
then be restricted to a value less than was assumed in the FSAR. Thus, there would be dezradation in operation of the safety related HPSI and/or LPSI systems.
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LOUISIMIA POUER MID LIGHT CCyPANY WATERFORD SES UUIT : 0. 3 1
INTERIM REPORT OF SIGNIFICMIT DEFICIE' ICY NO.19 6
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LOUISIANA POWER N!D L!",HT C0!'PA!Pf WATERFORD SES U":: : 0. 3 INTERIM REPORT OF SIG:IIFICAIIT DEFICIF.:CY :!0. 19 T.G.GET ROCK MOTOR OPERATED 7AI'.TS - BUSHII!G !!CT STI.M 12! [8d Reviewed by O
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LOIISTANA POUER AND LIGHT C0!/PANY WATERFORD SES U'!!T NO. 3 INTEPIM REPORT OF SIGNIFICANT DEFICIENCY NO. 19 i.
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Interim Report of Significant Construction Deficiency No. 19 TARGET ROCK MOTOR OPERATED VALVES - SUSHING NOT STAKED i
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Introduction This report is submitted pursuant to 10CFR50.55(e). It describes a deficiency with the design of the subject valves which was detected at another nuclear generatine facility.
Baekeround By telephone conversation on November 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Commission concerning a deficiency which had earlier been identified in URC IE Circular No. 80-Oh Section IV dated March 14, 1980. Although this circular stated that no written response was recuired frem licensees, further evaluation indicated that the deficient condition would be reportable under the terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Engineerina for use in the Waterford SES Unit No. 3 Nuclear Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Oh dated March lh,1980, an investigation of the failure of a High Dressure Safety Injection (HDFI) header shut-off valve at another nuclear generating station revealed that the threaded bushing was loose. The bushing was not staked or otherwise secured to prevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the. disk. The full open limit switch is gear driven by the valve operator and movement of the bushine can alter the relationship between stem rotation and l
linear travel such that travel in the open direction nay be terminated prematurely by the limit switch.
Analysis of Safety Inclications If one or more of the bushings in either the HSSI or LPSI shut off valves were to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve not fully cpen, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there would be degradation in operation of the safety related HPSI and/or LPSI systems.
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Corrective Action Combustion Engineering issued Field Action Request (FAR) No. Il5W on October 3, 1980. This FAR describes the procedure to be used to have the threaded buchings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
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IN~ERI!! REPORT OF SIGNIFICANT DEFICIE' ICY N0. 19 i
5 TARGET ROCK '.'OTOR ODERATED VALVES - BUSEIUG NOT STAKD t
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i Interim Report of j
Significant Construction Deficiency I*o. 19 EARGET ROCK MOCCR OPERATED VALVES - STSEING NOT STAKED 4
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F Intreduction This report is submitted pursuant to 10CFR50 55(e). It describes a deficiency with the design of the subject valves which was detected at another nuclear generatine facility.
3ackereund By telephone eenversation en November 12, 1980, L:uisiana Power and Light notified the Nuclear Regulatory Conmission concerning a deficiency which had earlier been identified in URC IE Circular No. 80-Oh Section I7 dated March 14, 1980. A1+5ough i
this circular stated that no written resconse vas required frem licensees, further evaluation indicated that the deficient condition vould l a reportable under the terms of 10C7350.55(e). The subject valves were purchaced frem the Target Rock Co.
by Conbustion Engineering fer use in the Waterfrri SES Unit No. 3 Nuclear Steam Supply System.
l Description of Deficiency l
As detailed in IE Circular 80-oh dated March r,1930, an investigation of the failure of a High Pressure Safety Injection (FFSI) header shut-off valve at another nuclear generating station revealed that the threaded bushing was loose. The l
i bushing was not staked or otherwise secured te prevent movement. This bushing l
is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is rear iriven by the valve operator and movement of the bushine can alter the rtlationship between stem rotation and j
i linear travel such that travel in the open directi:n nay be terminated prematurely I
by the limit switch.
Analysis of Safety Imelications If one or more of the bushings in either the E?SI cr LPSI shut c,f valvet
<ere to loosen and back out, valve stem travel could be terminated pr,msturely L;r h
the limit switch, and with the valve not fully open, safety inject:7n flow e 3t then be restricted to a value less than was assumed in the FSAR. Thu, 'i.iere would be derradation in operation of the safety related HPSI and/or LPSI systems.
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i Corrective Action Cc=bustion Encineerin: issued Field Action Request (FAR) Iio. Il5W on October 3, 1980. This FAR des:ribes the precedure to be used to have the threaded bushings pinned to the talve yokes, thereby treventing possible rotation of those bushings. Anticipated cc=pletion date for these repairs at the
'a'aterford 3 Constructi:n Site is set for June 30, 1981.
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I?T*ERIff REPORT OF SIGNIFICMIT DEFICIENCY NO. 19 l
TARGET ROCK MOTOR OPERATED VALVES - BUSHING NOT STAKED l
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Interim Report of Significant Construction Deficiency No. 19 TARGET ROCK FOTOP CPERATED VALVES - BUSEING NOT STAKED Introduction This report is submitted pursuant to 10CFR50.55(e). It describes a deficiency with the design of the subject valves which was detected at another nuclear generating facility.
Backcround By telephone conversation on November 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Co= mission concerning a deficiency which had earlier been identified in NRC IE Circular No. 80-Oh Section IV dated !! arch 14, 1980. Although this circular stated that no written resconse was required frcm licensees, further evaluation indicated that the deficient condition vould be reportable under the terms of 10CFR50 55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Engineering for use in the Waterford SES Unit No. 3 Nuclear Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Oh dated March lh,1980, an investigation of the failure of a High Pressure Safety Injection (EPSI) header shut-off valve at another nuclear generating station revealed that the threnf ed bushing was loose. The bushing was not staked or otherwise secured to prevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is gear driven by the valve operator and movement of the bushing can alter the relationship between stem rotation and linear travel such that travel in the open direction nay be terminated prematurely by the limit switch.
Analysis of Eafety Imolications e
If one or more of the bushings in either the HPSI or LPSI shut off valves were to loosen and back out, valve stem travel could be terminated prematurely,by the limit avitch, and with the valve not fully open, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there would be degradation in operation of the safety related HPSI and/or LPSI systems.
Corrective Action Combustion Engineering issued Field Act'an 7.::;;cct (FAE) 2.115% on October 3, 1980.
his FAR describes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby treventing possible rotation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
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il LOUISIA:!A POWER AND LIGHT CO:.'PANY WATERFORD SES UNIT ':0. 3 I
i INTERI!! REPORT OF SIGNIFICANT DEFICIE' ICY :!O.19.
TARGET ROCE MOTOR OPERATED VAL'.TS - FUSHING NOT STAKED 1
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T/86 ki adalino - Project Encineer '
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Interi= Report of Sigr.ificant Construction Deficiency No. 19 TARGET RC;K MOTOR OPERATED VALVES - EUSEING NOT STARTD Introduction This report is submitted pursuant to 10CFR50.55(e). It describe,s a deficiency with the design of the subject valves which was detected at another nuclear generating facility.
Backcround By telephone conversation on November 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Co==ission concerning a deficiency which had earlier been identified in NRC IE Circular No. 80-Oh Section IV dated March lb,1980.
Although this circular stated that no written response was required from licensees,_ further evaluation indicated that the deficient condition would be reportable under the terms of 10CFR50.55(e'. The subject valves were purchased from the Target Rock Co.
by Co=bustion Engineering for use in the Waterford SES Unit No. 3 Nuclear Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Oh dated March li,1980, an investigation of the failure of a High Pressure Safety Injection (E?SI) header shut-off valve at another nuclear generating station revealed that the threaded bushing was loose. The bushing was not stakei or otherwise secured tc prevent movement. This bushing.
is part of the mechanism which converts the valve stem rotation to linear travel l
The full open limit switch is peer driven by the valve operator of the disk.
and movement of the tushine can alter the relationship between stem rotation and linear travel such that travel in the open direction may be terminated prematurely l
by the limit switch.
l Analysis cf Safety Irrlications If one or more of the bushings in either the EPSI or LPSI shut off valves were to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve not full: open, safety injection flow might then be restricted te a value less than was assumed in the ESAR. Thus, there would be degradation in operation of the safety related EPSI. and/or LPSI erstems, i
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Corrective Action Combustion Engineering issued Field Action Request (FAR) IIo.115W on October 3, 1950. This FAR describes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of these 'cushings. Anticipated completien date for these repairs at the Waterferd 3 Construction Site is set for June 30, 1981.
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LOUISIA!!A POWEP RID LIGHT COMPANY WATE*JORD SES TIIT NO. 3 INTERIM REPORT OF SIGNIFICANT DEFICIENCY NO. 19 TARGET ROCK MOTCR OPERATED VALVES - BUSHING NOT STAIED
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dMr M M ~ adalino - Project Encineer '
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Interim Report of Significant Construction Deficiency No. 19 i
TAEGET ROCK MOTOR OPERATED VALVES - BUSHING NOT STAKED Intreduction This report is submitted pursuant to 10CFR50 55(e).
It describes a deficiency with the design of the subject valves which was detected at another nuclear generating facility.
Back round By telephone conyersation on November 12, 1980, Louisiana Power and Light notified the Huclear Regulatory Co= mission concerning a deficiency which had earlier been identified in RRC IE Circular No. 80-04 Section IV dated March 1h,1980.
Although this circular stated that no written response was required frca licensees, further evaluation indicated that the deficient condition vould be reportable under the terms of 10CF350.55(e). The subject valves were purchased frca the Target Rock Co.
by Cembustion Engineering for use 'in the Waterford SES Unit No. 3 Nuclear Stean Supply Systen.
1 Descriotion of Deficiency As detailed in IE Circular 80-Oh dated March lh,1980, an investigation of the failure of a Hizh Dressure Safety Injection (EPSI) header shut-off valve at another nuclear generating station revealed that the threaded bushing was loose. The bushing was not staked or otherwise secured to prevent movement. This bushing is part 6f~Ehe mechanism which converts the valve stem rotation to linear travel of the disk. The full open linit switch is gear driven by the valve operator and movement of the bushine can alter the relationship between stem rotation and linear travel such that travel in the open direction nay be terminated prematurely by the limit switch.
Analysis cf Safety Imolications If one or more of the bushings in either the EPSI or LPSI shut off. valves were to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve not fully open, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there vould be degradation in operation of the safety related HPSI and/or LPSI systems. i l
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Corrective Action Combustion Engineering issued Field Action Request (FAR) No. Il5W on October 3, 1980. This FAR de:cribes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completion date for these repairs at the Water'crd 3 Construction Site is set for June 30, 1981.
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LOUISIMIA POWER AND LIGHT COMPANY WATERFORD SES UNIT NO. 3 1
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INTERIM REPORT OF SIGNIFICMIT EEFICIENCY NO.19 i
TARGET RCCK MOTOR OPERATED VALVES - BUSHING NOT STAKED i
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Reviewed by P V Gvildys - M-N Supervisor '
Reviewed by.
0 R L Hymef - Project GA Enc.ineer
Interim Report of Significant Construction Deficiency No. 19 TARGE' ROCK MOTOR OPERATED VALVES - EUSHING UOT STAKED Introduction This report is submitted pursuant to 10CFR50.J5(e).
It describes a deficiency with the design cf the subject valves which was detected at another nuclear generatine facility.
Backgr:und By telephone conversstion on Neve=ber 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Commission concerning a deficiency which had earlier been identified in NRC IE Circular No. 80-04 Section IV dated '! arch 14, 1980. Although this circular stated that no written response was required from licensees, further evaluation indica ed that the deficient condition would be reportable under the j
terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Enrineerine for use in the Waterford SES Unit No. 3 Nuclear Stest i
Supply System.
Description of reficiency l
l As detailed in II Circular 80-Ci dated March 11, 1980, an investigation of the failure of a High "ressure Safety Injection (EFSI) header shut-off valve at another nuclear zeneratin: station revealed that the threaded bushing was loose. The bushin vas not snaked or otherwise secured to prevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is gear driven by the valve operator and movement of the tushine can alter the relationship between stem rotation and linear travel such that travel in the open direction nay be terminated prematurely by the limit switch.
Analysis cf Safe r Irelientione If one or = ore of the bushings in either the EFSI or LPSI shut off valves were to loosen and back cut, valve stem travel could be terminated prematurely by.
the li=it switch, and with the valve not fully open, safety injection flow might then be restricted te a value less than was assumed in the FSAR. Thus, there vould be derradation in operation of the safety related EPSI and/or LPSI systems.
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Corrective Action Combustion Engineering issued Field Action Request (FAR) No. 115W on October 3, 1980. This FAR descr!bes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
ICUISIANA POWER AND LIGHT COMPANY WATERFORD SES U'!IT NO. 3 INTERI!! REPORT OF SIGNIFICANT DEFICIENCY NO. 19 TARGET ROCK MOTOR OPERATED VALVES - BUSHING UOT STAKED Reviewed by h
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12[f[8d M
adalino - Project Engineer '
Reviewed by __\\,,M/
I lE > / dO haYt - P'roject Licendin[. Ent;ineer Y
YO l$ff80 Revieved by P' V Gvildys - M-:: Supervis6r '
O Peviewed by.
R L Hyraef - Project QA Engineer
Interi= Report of Significant Construction Deficiency No. 19 TARGET ROCK MOTOR OPERATED VALVES - BUSHING NOT STAKED Introduction This report is submitted pursuant to 10CFR50.55(e).
It describes a deficiency with the design of the subject valves which was detected at another nuclear generatine facility.
Background
By telephone conversation on Nove=ber 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Commission concerning a deficiency which' had earlier been identified in NRC IE Circular No. 80-Oh Section IV dated March lk,1980.
Although this circular stated that no written response was required from licensees, further evaluation indicated that the deficient condition would be reportable under the ter=s of 10CFR50.55(e). The subject valves vere purchased from the Target Rock Co.
by Combustien Engineerine for use in the Waterford SES Unit No. 3 Huclear Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Oh dated March lk,1980, an investigation of the l
failure of a Hich Pressure Safety Injection-(EPSI) header shut-off valve at another nuclear senerating station revealed that the threaded bushing was loose. The l
bushing was not staked or otherwise secured to prevent movement. This bushing l,
is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is near driven by the valve operator and movenent of the bushing can alter the relationship between stem rotation and linear travel such that travel in the open direction nay be terminated prematurely by the limit switch.
Analysis of Safety Innlications If one or more of the bushings in either the E?SI or LPSI shut off valves were to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve nct fully open, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there would be decradation in oneration of the safety related HPSI and/or LPSI systems.
Corrective Action Combustion Engineering issued Field Action Request (FAR) No. 115W on October 3, 1980. This FAR describes the procedure to be used to have the threaded bushine.s pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
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LOIISIA'iA POWER AND LIGET COMPANY
'JATERFORD SES U';IT : 0. 3 INTERI?! REPORT OF SIG:iIFICA:iT DEFICIE: CY No.19 9
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TA'GE"' ROC :CIOR OPERATED VAL'lIS - BUSHING NOT STAKED i
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Pcviewed by h
M[C,9
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{[8d M
adalino - Project Engineer
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Reviewed by
, i 1 e,,3 13 3 /.$O MaYt - P'roject Licensin[ Engineer lbff6'O
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O Revtcued b7 F V Gvildys - M-II Supervisor '
8O Peviewed by.
R L Hymef - Projec-QA Enrineer i
Interin Report of Significant Construction Deficiency No. 19 TARGET ROCK MOTOR OPERATED VAL 7ES - BUSEING NOT STAKED Introduction This report is sub=itted pursuant to 10CFR5C.55(e). It describes a deficiency with the design of the subject valves which was detected at another nuclear ceneratinz facility.
4 3ackground By telephone conversation on November 12, 1930, Louisiana Power and Light notified the Nuclear Regulatory Co=missien concerning a deficiency which had ear'. cr been identified in NEC IE Circular No. 80-Oh Section IV dated March 1k,1980. Although this circular stated that no written response was required frca licensees, further evaluation indicated that the deficient condition vould be reportable under the terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Engineerine for use in the Waterford SES Unit No. 3 Nuclear Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Oh dated March 1L,1930, an investigation of the failure of a High Pressure Safety Injection (E?SI) header shut-off valve at another l
nuclear generating station revealed that the threaded bushing was loose. The bushing was not staked or otherwise secured te prevent movement. This bushing l
is part of the mechanism 'thich converts the valve stem rotation to linear travel of the disk. The full cpen limit switch is rear driven by the valve operator and movement of the bushine can alter the relationship between stem rotation and linear travel such that-travel in the open direction may be terminated prematurely by the limit switch.
Analysis of Safety Irelications If one or more of the bushings in either the EFSI or LPSI shut off valves were l
to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve not fully open, safety injection flow might l
then be restricted to a value less than was assumed in the FSAR. Thus, there would be degradation in operation of the safety related HPSI and/or LPSI systems.
, l l
L
Corrective Action Combustion Engineering issued Field Action Request (FAR) No. 115W on October 3, 1980. This FAR describes the procedure to be used to have th.: threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
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LOUISIANA POWER AND LIGH"' C0"PANY WATERFORD SES UNIT No. 3 1
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INTERIM REPORT OF SIGNIFICANT DEFICIENCY NO. 19 i
4 TARGET ROCK MOTOR OPERATED VALVES - PUSHING NOT STAKED
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Bevieved by jnr=-
adalino - Project Encineer
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O Beviewed by P V Gvildys - M 'I Supervis6r '
U Reviewed by W
RLHymef-ProjectGAEngineer
Interim Report of Significant Construction Deficiency No. 19 TARGET 20CK MOTOR OPERATED VALVES - BUSHING NOT STAKED Introduction This report is submitted pursuant to 10CFR50.55(e). It describes a deficiency with the design of the subject valves which was detected at another nuclear generating facility.
Background
By telephone conversatien en November 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Co= mission concerning a deficiency which had earlier been identified in NRC IE Circular No. 80-04 Section IV dated March 14, 1980. Although this circular stated that no written resconse was required from licensees, further evaluation indicated that the deficient condition vould be reportable under the terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Engineering for use in the Waterford SES Unit No. 3 Nuclear Steam Supply Systen.
Description of Deficiency As detailed in IE Circular 80-Oh dated " arch 1k,1980, an investigation of the failure of a High Fressure Safety Injection (EPSI) header shut-off valve i, another nuclear generatin station revealed that the threaded buahing was loose. The bushing was not staked or otherwise secured to prevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full cpen limit switch is gear driven by the valve operator and movement of the bushine can alter the relationship between stem rotation and linear travel such that travel in the open direction may be terminated prematurely by the limit switch.
Analysis of Safety Innlications If one or more of the bushings in either the EPSI or LPSI shut off valves were to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve not fully open, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there would be degradation in operation of the safety related HPSI and/or LPSI systems. _ _ _ _ _ _
, Corrective Action Cc=bustion Engineering issued Field Action Request (FAR) No. 115W on October 3, 1980. 'This FA' describes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rutation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
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s LO*JIS!.UA POUER NTD L:':-:C CCyPE Y l'ATERFORD SES LE!!! :!O. 3 i
IICERI: REPCET OF S!:-:IIFICAIIT DEFICIE Y !!O.19 i
i TARGET ?0C:: :' COR OPERATED VAL"IS - BUSEI:!G 0T STAKED 4
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l Peviewed by h
M[C,"-
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T[8d MC adalino - Project Engineer '
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EaYt-P'roject_icensin[ Engineer Eevteved by. W YbO
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7 7 Gvildys - ::-:: Supervisor '
Feviewed by 3 W
8O I L Fy::ef - Pro.jee: 2A Eneineer 1
1 1
Interim Report of Significant Construction Deficiency Uc. 19 TARGE" ?OCK MOTOR OPERATED VALVES - BUSEIW' :00 STAKED i
Introduction This report is submitted pursuant to 10CFR50 55(e).
It describqs a deficiency 3
j vith the design of the subject valves which was detected at another nuclear generating facility.
3ackcround 3y telephone conversation on Nove=ber 12, 1980, Louisiana Pcuer and Light notified the Nuclear Regulatory Conmission concerning a deficiency which had earlier been identified in :E: IE Circular No. 80-Oh Section IV dated :: arch 1h,1980.
Although this circular stated that no written response was required from licensees, further evaluation indicated that the deficient condition vould be reportable under the terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Cembustion Engineerin7 for use in~the Waterford SES Unit No. 3 Nuclear Steam Supply System.
Description of reficiency As detailed in IE Circular 80-Oh dated March lk,1980, an investigation of the failure of a Hich Pressure Safety Injection (EPSI) header shut-off valve at another nuclear generating station revealed that the threaded bushing was loose. The l
bushing was not staked or otherwise secured to prevent =cvement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is gear driven by the valve operator and movement of the bushine can alter the relationship between stem rotation and linear travel such that travel in the open direction may be terminated prematurely
[
by the limit switch.
L Analysis of Safetv !=nlications If one or mora of the bushings in either the 'EPSI or LPSI shut off valves were to loosen and back cut, valve stem travel could be terminated prematurely by the limit switch, and_ vith the valve not fully open, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there vould be degradation in operation of the safety related HPSI and/or LPSI systems.
Cerrective Action C0:bustion Enrineering issued Field Action Request (FAR) No.115W on October 3, 1980. This FAR describes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated co:npletion date for these repairs at the Waterford 3 Censtructien Site is set for June 30, 1981.
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l LOUISIANA POWER AND LIGHT C0!!PANY WATERFORD SES UNIT NO. 3 i
IICERI!! REPORT OF SIGNIFICANT DEFICIENCY NO. 19 TARGET ROCK MOTOR OPERATED VALVES - BUSHING NOT GTAKED i
i Reviewed by O
d[C,M i2[Y[8d M
adalino - Project Engineer ~
Reviewed by r-M lO $.$O
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- TIaYt - P'roject Licensinf Engineer
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2eviewed by
_F V Gvildys - M-U Suoervis5r '
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Interim Report of Significant Construction Deficiency No. 19 TARGET ROCK MOTOR OPERATED VALVES - BUSHING NOT STAKZD Introduction This report is submitted pursuant to 10CFR50 55(e). It describes a deficiency with the design of the subject valves which was detected at another nuclear eeneratinz facility.
Background
By telephone conversation on November 12, 1980, Louisiana Power and Light notified the Nuclear Regulatory Commission concerning a deficiency which had earlier been identified in NRC IE Circular No. 80-Oh Section IV dated March 14, 1980. Although this circular stated that no written restonse was required from licensees, further evaluation indicated that the deficient condition vould be reportable under the terms of 10CFR50.55(e). The subject valves were purchased from the Target Rock Co.
by Combustion Engineering for use in the Waterford SES Unit No. 3 Nuclear Steam Supply System.
Description of Deficiency As detailed in IE Circular 80-Gk dated March lb,1980, an investigation of the failure of a High Dressure Safety Injection (EPSI) header shut-off valve at another nuclear generating station revealed that the threaded bushing was loose. The bushing was not staked or otherwise secured to prevent movement. This bushing is part of the mechanism which converts the valve stem rotation to linear travel of the disk. The full open limit switch is gear driven by the valve operator and movenent of the bushine can alter the relationship between stem rotation and linear travel such that travel in the open direction may be terminated prematurely by the limit switch.
Analysis cf Safety Imolicatiens If one or more of the bushings in either the EPSI or LPSI shut off valves were to loosen and back out, valve stem travel could be terminated prematurely by the limit switch, and with the valve net fully open, safety injection flow might then be restricted to a value less than was assumed in the FSAR. Thus, there vould be degradatinn in operation of the safety related HPSI and/or LPSI systems.
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_1_
?
Corrective Action Combustion Engineering issued Field Action Request (FAR) No. 115W on October 3, 1980. 'niis FA" describes the procedure to be used to have the threaded bushings pinned to the valve yokes, thereby preventing possible rotation of those bushings. Anticipated completion date for these repairs at the Waterford 3 Construction Site is set for June 30, 1981.
LOUISIMIA P0 ITER MID LIGHT CO &ANY WATEPJ0PD SES UNIT NO. 3 INTERIM REPORT OF SIGNIFICANT DEFICIEITCY NO. 19 TARGET ROCK MOTOR OPERATED VALVES - EUSHING UOT STAKED l
l Revteved by 0N I
TfS6 M' adalino - Project Enginear Reviewed by (n,3 lE 5 80 YIaYt - Project Licensin[ Engineer lbfW6't)
Revievei hy P' V Gvildys - M-N Supervisor '
0 Reviewed by,
RLHymef-ProjectGAEncineer
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