Preconditioning of Molded-Case Circuit Breakers Before Surveillance TestingML031060110 |
Person / Time |
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Site: |
Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Mcguire, Nine Mile Point, Palisades, Palo Verde, Perry, Indian Point, Fermi, Kewaunee, Catawba, Harris, Wolf Creek, Saint Lucie, Point Beach, Oyster Creek, Watts Bar, Hope Creek, Grand Gulf, Cooper, Sequoyah, Byron, Pilgrim, Arkansas Nuclear, Three Mile Island, Braidwood, Susquehanna, Summer, Prairie Island, Columbia, Seabrook, Brunswick, Surry, Limerick, North Anna, Turkey Point, River Bend, Vermont Yankee, Crystal River, Haddam Neck, Ginna, Diablo Canyon, Callaway, Vogtle, Waterford, Duane Arnold, Farley, Robinson, Clinton, South Texas, San Onofre, Cook, Comanche Peak, Yankee Rowe, Maine Yankee, Quad Cities, Humboldt Bay, La Crosse, Big Rock Point, Rancho Seco, Zion, Midland, Bellefonte, Fort Calhoun, FitzPatrick, McGuire, LaSalle, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant |
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Issue date: |
04/25/1996 |
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From: |
Grimes B K Office of Nuclear Reactor Regulation |
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To: |
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References |
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IN-96-024, NUDOCS 9604220229 |
Download: ML031060110 (14) |
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Similar Documents at Beaver Valley, Millstone, Hatch, Monticello, Calvert Cliffs, Dresden, Davis Besse, Peach Bottom, Browns Ferry, Salem, Oconee, Mcguire, Nine Mile Point, Palisades, Palo Verde, Perry, Indian Point, Fermi, Kewaunee, Catawba, Harris, Wolf Creek, Saint Lucie, Point Beach, Oyster Creek, Watts Bar, Hope Creek, Grand Gulf, Cooper, Sequoyah, Byron, Pilgrim, Arkansas Nuclear, Three Mile Island, Braidwood, Susquehanna, Summer, Prairie Island, Columbia, Seabrook, Brunswick, Surry, Limerick, North Anna, Turkey Point, River Bend, Vermont Yankee, Crystal River, Haddam Neck, Ginna, Diablo Canyon, Callaway, Vogtle, Waterford, Duane Arnold, Farley, Robinson, Clinton, South Texas, San Onofre, Cook, Comanche Peak, Yankee Rowe, Maine Yankee, Quad Cities, Humboldt Bay, La Crosse, Big Rock Point, Rancho Seco, Zion, Midland, Bellefonte, Fort Calhoun, FitzPatrick, McGuire, LaSalle, Fort Saint Vrain, Shoreham, Satsop, Trojan, Atlantic Nuclear Power Plant |
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Category:NRC Information Notice
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Mclaughlin on NRC, Regarding NRC Information Notice 2006-13: Groundwater Contamination 2020-09-03 The following query condition could not be considered due to this wiki's restrictions on query size or depth: <code> [[:Beaver Valley]] OR [[:Millstone]] OR [[:Hatch]] OR [[:Monticello]] OR [[:Calvert Cliffs]] OR [[:Dresden]] OR [[:Davis Besse]] OR [[:Peach Bottom]] OR [[:Browns Ferry]] OR [[:Salem]] OR [[:Oconee]] OR [[:Mcguire]] OR [[:Nine Mile Point]] OR [[:Palisades]] OR [[:Palo Verde]] OR [[:Perry]] OR [[:Indian Point]] OR [[:Fermi]] OR [[:Kewaunee]] OR [[:Catawba]] OR [[:Harris]] OR [[:Wolf Creek]] OR [[:Saint Lucie]] OR [[:Point Beach]] OR [[:Oyster Creek]] OR [[:Watts Bar]] OR [[:Hope Creek]] OR [[:Grand Gulf]] OR [[:Cooper]] OR [[:Sequoyah]] OR [[:Byron]] OR [[:Pilgrim]] OR [[:Arkansas Nuclear]] OR [[:Three Mile Island]] OR [[:Braidwood]] OR [[:Susquehanna]] OR [[:Summer]] OR [[:Prairie Island]] OR [[:Columbia]] OR [[:Seabrook]] OR [[:Brunswick]] OR [[:Surry]] OR [[:Limerick]] OR [[:North Anna]] OR [[:Turkey Point]] OR [[:River Bend]] OR [[:Vermont Yankee]] OR [[:Crystal River]] OR [[:Haddam Neck]] OR [[:Ginna]] OR [[:Diablo Canyon]] OR [[:Callaway]] OR [[:Vogtle]] OR [[:Waterford]] OR [[:Duane Arnold]] OR [[:Farley]] OR [[:Robinson]] OR [[:Clinton]] OR [[:South Texas]] OR [[:San Onofre]] OR [[:Cook]] OR [[:Comanche Peak]] OR [[:Yankee Rowe]] OR [[:Maine Yankee]] OR [[:Quad Cities]] OR [[:Humboldt Bay]] OR [[:La Crosse]] OR [[:Big Rock Point]] OR [[:Rancho Seco]] OR [[:Zion]] OR [[:Midland]] OR [[:Bellefonte]] OR [[:Fort Calhoun]] OR [[:FitzPatrick]] OR [[:McGuire]] OR [[:LaSalle]] OR [[:Fort Saint Vrain]] OR [[:Shoreham]] OR [[:Satsop]] OR [[:Trojan]] OR [[:Atlantic Nuclear Power Plant]] </code>.
[Table view]The following query condition could not be considered due to this wiki's restrictions on query size or depth: <code> [[:Beaver Valley]] OR [[:Millstone]] OR [[:Hatch]] OR [[:Monticello]] OR [[:Calvert Cliffs]] OR [[:Dresden]] OR [[:Davis Besse]] OR [[:Peach Bottom]] OR [[:Browns Ferry]] OR [[:Salem]] OR [[:Oconee]] OR [[:Mcguire]] OR [[:Nine Mile Point]] OR [[:Palisades]] OR [[:Palo Verde]] OR [[:Perry]] OR [[:Indian Point]] OR [[:Fermi]] OR [[:Kewaunee]] OR [[:Catawba]] OR [[:Harris]] OR [[:Wolf Creek]] OR [[:Saint Lucie]] OR [[:Point Beach]] OR [[:Oyster Creek]] OR [[:Watts Bar]] OR [[:Hope Creek]] OR [[:Grand Gulf]] OR [[:Cooper]] OR [[:Sequoyah]] OR [[:Byron]] OR [[:Pilgrim]] OR [[:Arkansas Nuclear]] OR [[:Three Mile Island]] OR [[:Braidwood]] OR [[:Susquehanna]] OR [[:Summer]] OR [[:Prairie Island]] OR [[:Columbia]] OR [[:Seabrook]] OR [[:Brunswick]] OR [[:Surry]] OR [[:Limerick]] OR [[:North Anna]] OR [[:Turkey Point]] OR [[:River Bend]] OR [[:Vermont Yankee]] OR [[:Crystal River]] OR [[:Haddam Neck]] OR [[:Ginna]] OR [[:Diablo Canyon]] OR [[:Callaway]] OR [[:Vogtle]] OR [[:Waterford]] OR [[:Duane Arnold]] OR [[:Farley]] OR [[:Robinson]] OR [[:Clinton]] OR [[:South Texas]] OR [[:San Onofre]] OR [[:Cook]] OR [[:Comanche Peak]] OR [[:Yankee Rowe]] OR [[:Maine Yankee]] OR [[:Quad Cities]] OR [[:Humboldt Bay]] OR [[:La Crosse]] OR [[:Big Rock Point]] OR [[:Rancho Seco]] OR [[:Zion]] OR [[:Midland]] OR [[:Bellefonte]] OR [[:Fort Calhoun]] OR [[:FitzPatrick]] OR [[:McGuire]] OR [[:LaSalle]] OR [[:Fort Saint Vrain]] OR [[:Shoreham]] OR [[:Satsop]] OR [[:Trojan]] OR [[:Atlantic Nuclear Power Plant]] </code>. |
April 25, 1996
NRC INFORMATION NOTICE 96-24: PRECONDITIONING OF MOLDED-CASE CIRCUIT BREAKERSBEFORE SURVEILLANCE TESTING
Addressees
All holders of operating licenses or construction permits for nuclear powerreactors.
Purpose
The U.S. Nuclear Regulatory Commission (NRC) is issuing this informationnotice to alert addressees to the detrimental effect that preconditioning ofmolded-case circuit breakers could have on the diagnostic validity ofsurveillance tests. It is expected that recipients will review thisinformation for applicability to their facilities and consider actions, asappropriate, to avoid similar problbms. However, suggestions contained inthis information notice are not NRC requirements; therefore, no specificaction or written response is required.DescriDtion of CircumstancesDuring an inspection at the Diablo Canyon Nuclear Power Plant (IR 50-275,323/94-27 dated December 21, 1994), NRC inspectors noted that the licenseepreconditioned circuit breakers before performing surveillance testing.Before the overcurrent trip testing, Diablo Canyon staff exercised the circuitbreakers by manually opening and closing them three times. The plant staff'did not record the as-found condition of the breakers in terms of unexercisedtrip currents and times.During another inspection at the South Texas Project (IR 50-498, 499/94-35dated January 19, 1995), NRC inspectors noted that the licensee exercisedsimilar circuit breakers manually at least five times before testing theovercurrent trip unit.DiscussionA molded-case circuit breaker is one of the most widely used protectivedevices for electrical circuits at nuclear power plants. Its proper operationis essential for the protection and safe operation of plant electricalequipment. Many circuit breakers are continuously energized for long periods.Often they are in service for years and are rarely, if ever, called upon toperform a protective function. Nevertheless, when needed, they must rapidlyisolate a faulted or overloaded circuit to prevent equipment damage.Therefore, for the safe operation of the electrical distribution systemequipment of a nuclear power plant, it is important to periodically verifytheir continued reliability..K VE uor~cEya-0OZ %6qZ 'I K>IIN 96-24April 25, 1996 Periodic inspection and testing of circuit breakers in their as-foundcondition is an appropriate way of demonstrating the functional operability ofthe breaker and of detecting any degradation. However, the practice ofpreconditioning before testing (e.g., lubricating pivot points and manuallycycling the breaker) defeats the purpose of the periodic test. Suchpreconditioning does not confirm continued operability between tests nor doesit provide information on the condition of the circuit breaker for trendingpurposes. Testing some circuit breakers in the as-found condition can provideuseful data on which to base decisions on surveillance intervals and theability of the untested circuit breakers to perform their intended function.Since only a fraction of the circuit breakers are tested each refueling outageto justify the operability of the remaining circuit breakers, preconditioningbefore testing does not provide the expected assurance of the operability ofremaining breakers which are not tested. By preconditioning circuit breakers,useful information may be lost because the breaker may not have been capableof performing its intended function without preconditioning.To correct this situation, Diablo Canyon Power Plant plans to revise theelectrical maintenance procedure before the next surveillance test has to beperformed. The revised procedures will state that electrical testing shouldbe performed before any intentional manual exercising of the breakers, and toensure that electrical testing on breakers with removable trip units isperformed before removing the trip unit.Some plants have older technical specification bases that cite NationalElectrical Manufacturers Association (NEMA) Standard AB 2-1980. This versionof the standard specifies mechanical cycling of circuit breakers prior toelectrical testing. In later versions of this standard, this procedure wasdeleted. There appears to be no valid technical need for mechanical cyclingprior to electrical surveillance testing.The NRC has issued other generic communications on molded-case circuit breakerapplications and testing: NRC Information Notice (IN) 92-51, and itsSupplement 1, "Misapplication and Inadequate Testing of Molded-Case CircuitBreakers;" IN 93-26, "Grease Solidification Causes Molded Case Circuit BreakerFailure to Close;" and IN 93-64, "Periodic Testing and Preventive Maintenanceof Molded-Case Circuit Breakers."
If IIN 96-24April 25, 1996 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager. /aL.."Brian K. Grimes, Acting DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Sikhindra Mitra, NRR(301) 415-2783Internet:skml@nrc.govSteve Alexander, NRR(301) 415-2995Internet:sda@nrc.govChristopher Myers, RIV(817) 860-8144Internet:cjm@nrc.gov
Attachment:
List of Recently Issued NRC Information Notices-tw@ / "Y KAttachmentIN 96-24April 25, 1996 LIST OF RECENTLY ISSUEDNRC INFORMATION NOTICESInformation Date ofNotice No. Subject Issuance Issued to96-2396-2296-2196-20Fires in Emergency DieselGenerator Exciters DuringOperation Following Unde-tected Fuse BlowingImproper Equipment Set-tings Due to the Use ofNontemperature-CompensatedTest EquipmentSafety Concerns Relatedto the Design of the DoorInterlock Circuit onNucletron High-Dose Rateand Pulsed Dose RateRemote AfterloadingBrachytherapy DevicesDemonstration of Associ-ated Equipment Compliancewith 10 CFR 34.20Failure of Tone AlertRadios to Activate WhenReceiving a ShortenedActivation SignalCompliance with 10 CFRPart 20 for AirborneThoriumLoss of Reactor CoolantInventory and PotentialLoss of Emergency Mitiga-tion Functions While in aShutdown Condition04/22/9604/11/9604/10/9604/04/9604/02/9603/25/9603/25/96All holders of OLs or CPsfor nuclear power reactorsAll holders of OLs or CPsfor nuclear power reactorsAll U.S. NRC Medical to theLicensees authorized to usebrachytherapy sources inhigh- and pulsed-dose-rateremote afterloadersAll industrial radiographylicensees and radiographyequipment manufacturersAll holders of OLs or CPsfor nuclear power reactorsAll material licenseesauthorized to possess anduse thorium in unsealedformAll holders of OLs or CPsfor PWR power plants96-1996-1895-03Supp. 1OL = Operating LicenseCP -Construction Permit K2 2 IN 96-24April 25, 1996 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.original signed byBrian K. Grimes, Acting DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Sikhindra Mitra, NRR(301) 415-2783Internet:skml@nrc.govSteve Alexander, NRR(301) 415-2995Internet:sda@nrc.govChristopher Myers, RIV(817) 860-8144Internet:cjm@nrc.gov
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 96-24.IN Tech Editor reviewed 9/21/95To receive a copy of this document, Indicate In the box: 'C' -Copy without enclosures 'E" = Copy with sncloRre l -= No copyOFFICE Contacts C IEELBNAME CMyers
- AChatfee sSMitra * /SAlexander* 7 ,DATE 4/22/96 4/15/96 4/22/96 4/LT/96OFFICIAL RECORD COPY IN 96-XXApril XX, 1996 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Dennis M. Crutchfield, DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Sikhindra Mitra, NRR(301) 415-2783Internet: skmlnrc.govChristopher Myers, RIV(817) 860-8144Internet: cjm@nrc.govSteve Alexander, NRR(301) 415-2995Internet: sda@nrc.gov
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.INTo receive a copy of this document. Indicate In the box:Tech Editor reviewed 9/21/95'C' -Copy without enclosures fEw -Copy with enclosures 'N' -No copyOFFICE IContacts C/EELB I D/DRPI lNAME CMyers
- AChaffee DCrutchfieldSMitra *SAlexanderLnfi_DATE 4 /15/96 7' 4/15/96 4/ /96 4/ /96.-------UICLIAL KECOKR COPY,44 I1 i< -' IN 96-XXApril XX, 1996 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Dennis M. Crutchfield, DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Sikhindra Mitra, NRR(301) 415-2783Internet: skmlnrc.govChristopher Myers, RIV(817) 860-8144Internet: cjm~nrc.gov
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.IN Tech Editor reviewed 9/21/95To receive a copy of this document, Indicate In the box: 'C' -Copy without enclosures 'E' -Copy with enclosures 'No = No copylOFFICE Contacts I C/EELB l C/PECB I DRPM INAME CMyers
- AChaffee DCrutchfieldSMitra *DATE 4 /I5/96 4/11 /96 4/ 4/ /96OFFICIAL RECORD COPY IN 96-XXApril XX, 1996 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Dennis M. Crutchfield, DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Christopher Myers, RIV(817) 860-8144Sikhindra Mitra, NRR(301) 415-2783
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.IN Tech Editor reviewed 9/21/95To receive a copy of this document. Indicate In the box: wCw = Copy without enclosures 'E" -Copy with enclosures 'N'= No copyOFFICE Contacts C/EELB INAME Myers JCalvoJy r AChaffee DCrutchfieldI ~SMi tra_ _ _ _ _ _ _DATE 4 /16796 4/ I7 /96 4/ /96 4/ /96OFFICIAL RECORD COPY IN 96-XXApril xx, 1996 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Dennis M. Crutchfield, DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Tom Westerman, RIV(817) 860-8145Christopher Myers, RIV(817) 860-8144Stephen Alexander, NRR(301) 415-2995Sikhindra Mitra, NRR(301) 415-2783
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.INT - 5 .LL.1. .I *k. i hn,.. tC = -Cnnu without enclosuresrcv
- wprs r^uumn, juciva lwi'Jw. --r,. ........................... ,* .See previous concurrence=E' CoDv with enclosures 'N' = No copyOFFICE RIV liE RIV E lRIV l E RIV E PSIB:DISP ENAME LTWesterman A CMyers k _ TP Gwyn* SAlexanderDATE I1 / g/95 t /, /95 / /95 01/25/95 / /95OFFICE TECH ED N SC:SIB:DISP l EE:DE E SC:EELB:DE E C:EELB:DEl ENAME WRSanders SKMitra 't ASGill* JACalvo*DATE 109/21/95* / /95 41,1/2o%96 I/Y.1 09/21/95 9/27/95OFFICE IPECB:DRPM PECB:DRPM PECB:DRPM I C:PECB:DRPM l D:DRPMNAME JTKoshy EFGoodwin* AChaffee DMCrutchfieldDATE IJ /f/96 10/04/95 I /95 /95 /95OFFICIAL RECORD COPY IN 96-XXJanuary xx, 1995 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Dennis M. Crutchfield, DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Tom Westerman, RIV(817) 860-8145Christopher Myers, RIV(817) 860-8144Stephen Alexander, NRR(301) 415-2995Sikhindra Mitra,(301) 415-2783NRR
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.INTo receive a copv ol this document. indicate In the box: C -Coov without enclosures* .See previous concurrence-E' .CoDV with enclosures "N" -No coDYlOFFICE RI Tf RI E _I I BDSNAME TWesterman CMyers _ _ _ TP Gwyn* SAl exanderDATE / /95 1 I / /9 IL/5 01_/25/95 / /95OFFICE lTECH ED N SC:SIB:DISP E EELB:DE E SC:EELB:DE I E lC:EELB:DEl ENAME l RSanders SKMi tra ASGill* JJACalvo*DATE l09/21/95* / /95 I / 1/96 09/21/95 9/27/95OFFICE JIPECB:DRPM PECB:DRPM I C:PECB:DRPMl D:DRPMNAME TKoshy EFGoodwin* AChaffee DMCrutchfi eldDATE I /oF/9 _ 10/04/95 / /95 / /95 / /95OFFICIAL RECORD COPY IK 'IIN 95-XXSeptember xx, 995This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Dennis M. Crutchfield, DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical contacts:Tom Westerman, RIV(817) 860-8145Christopher Myers,(817) 860-8144RIVStephen Alexander, NRR(301) 415-2995Sikhindra Mitra, NRR(301) 415-2783
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.INTe raclva a etonw of thb document Indicate hI Om box: 'C' -Copv without enclosures*
- See previous concurrence'E -Copy with enclosures 'N- -No copyOFFICE R E RIV E R RIV E PSIB:DISP ENAME TWesterman c CMyers / T/5 6_ _ _w n SAlexanderDATE I /Teean/95 jC/1y/95 / /95 _ T/ZS/95 I /95OFFICE TECH ED N SC:SIB:DISP l DEE E SC:EELB:DE E C:EELB:DE ENAME RSanders SKMitra* ASGill* JACalvo*DATE 09/21/95* / /95 09/20/95 09/21/95 / /95OFFICE PECB:DRPM I E PECB:DRPM / l-JLIPEIBhRPM IZ C:PECB:DRPM ID:DRPMNAME TKoshy EFGoodwin RJK AChaffee DMCrutchfieldDATE 9/26/95 y 95 V // /95 / /95OFFICIAL RECORD COPY IN 95-XXSeptember xx, 1995 This information notice requires no specific action or written response. Ifyou have any questions about the information in this notice, please contactone of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Brian K. Grimes, Deputy DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical Contacts: Tom Westerman, RIV(817) 860-8145Christopher Myers, RIV(817) 860-8144Stephen Alexander, NRR(301) 415-2995Sikhindra Mitra, NRR(301) 415-2783
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.IN * , See previous concurrenceTo receive a copy of this document. Indicate In the box: 'C' Copy without enclosures E' -Copy with enclosures N -No copyOFFICE RIY I E RIY E RIYE RIV E PSIB:DISP ENAME TWesterman CMyers ____ _ SAlexanderDATE / /LE95 / /95 I /95 /95 / /95OFFICE TECH ED I N SC:SIB:DISP E EELB:DE I E SC:EELB:DEl E C:EELB:DEI ENAME RSanders SKMitra* ASGill* JACalvo I/ACjDATE 09/21/95* / /95 09/20/95 09/21/95 f /17/95 qI~d'3OFFICE PECB:DRPM l C:PECB:DRPM l DD:DRPMNAME AChaffee BKGrimesDATE I /95 / /95 l//95OFFICIAL RECORD COPY IN 95-XXAugust XX, 1995 one of the technical contacts listed below or the appropriate Office ofNuclear Reactor Regulation (NRR) project manager.Brian K. Grimes, Deputy DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical Contacts:Tom Westerman, RIV(817) 860-8145Christopher Myers, RIV(817) 860-8144Stephen Alexander, NRR(301) 415-2995Sikhindra Mitra, NRR(301) 415-2783
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.INa nv Cf thids donument. indicate In the box:* .See previous concurrence'C' -Coov without enclosures 'E' -Copy with enclosures 'N' .No copyTo rAceivAOFFICE RIV l1 El t E RE R E RIV I E lPSIB:DISP I ENAME TWesterman CMyers ISAlexanderDATE / /95 I /95 / /95 /95 /95OFFICE TECH ED N SC:SIB:DISP I E EELB:DE E SC:EELB-DE E C:EELB:DEl ENAME BCalure SKMitra YOM& ASGill t JACalvoDATE 08/03/95* j-/ /95 / O/95 /04/95 / /95OFFICE PECB:DRPM l C:PECB:DRPMT DD:DRPMNAME AChaffee BKGrimesDATE I /95 / /95 / /95OFFICIAL RECORD COPY K-/IN 95-XXAugust XX, 1995 one of the technical contacts listed below or theNuclear Reactor Regulation (NRR) project manager.appropriate Office ofBrian K. Grimes, Deputy DirectorDivision of Reactor Program ManagementOffice of Nuclear Reactor RegulationTechnical Contacts:Tom Westerman, RIV(817) 860-8145Christopher Myers, RIV(817) 860-8144Stephen Alexander, NRR(301). 415-2995Sikhindra Mitra, NRR(301) 415-2783
Attachment:
List of Recently Issued NRC Information NoticesDOCUMENT NAME: 95-XX.INTo receive a copy of this document. Indicate In the box:* = See previous concurrencewEd -Copy with oncosurss rW -No copyNCR -Copy without endosurmsOFFICE RIV I E RIY E RIV E RIV I E PSIB:DISP I ENAME TWesterman CMyers I jSAlexanderDATE / /95 / /95 1/. /95 /95 / /95OFFICE TECH ED N SC:SIB:DISP I E EELB:DE E SC:EELB:DE E C:EELB:DEI ENAME BCalure K54a" 1SKMitra ASGill JACalvo IDATE 08/03/95* gf(g fIq / /95 / /95 /95 / /95OFFICE PECB:DRPM C:PECB:DRPM DD:DRPMNAME 1AChaffee BKGrimes _ lDATE/ /95 1 / /95 / /95 IIOFFICIAL RECORD COPY
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list | - Information Notice 1996-01, Potential For High Post-Accident Closed-Cycle Cooling Water Temperatures to Disable Equipment Important to Safety (3 January 1996)
- Information Notice 1996-01, Potential for High Post-Accident Closed-Cycle Cooling Water Temperatures to Disable Equipment Important to Safety (3 January 1996)
- Information Notice 1996-02, Inoperability of Power-Operated Relief Valves Masked by Downstream Indications During Testing (5 January 1996, Topic: Stroke time)
- Information Notice 1996-03, Main Steam Safety Valve Setpoint Variation as a Result of Thermal Effects (5 January 1996)
- Information Notice 1996-03, Main Steam Safety Valve Setpoint Variation As a Result of Thermal Effects (5 January 1996)
- Information Notice 1996-04, Incident Reporting Requirements for Radiography Licensees (10 January 1996, Topic: Brachytherapy)
- Information Notice 1996-05, Partial Bypass of Shutdown Cooling Flow from Reactor Vessel (18 January 1996, Topic: Reactor Vessel Water Level)
- Information Notice 1996-06, Design & Testing Deficiencies of Tornado Dampers at Nuclear Power Plants (25 January 1996)
- Information Notice 1996-07, Slow Five Percent Scram Insertion Times Caused by Viton Diaphragms in Scram Solenoid Pilot Valves (26 January 1996)
- Information Notice 1996-08, Thermally Induced Pressure Locking of a High Pressure Coolant Injection Gate Valve (5 February 1996, Topic: Anchor Darling, Cold shutdown justification)
- Information Notice 1996-09, Damage in Foreign Steam Generator Internals (12 February 1996, Topic: Earthquake)
- Information Notice 1996-10, Potential Blockage by Debris of Safety System Piping Which Is Not Used During Normal Operation or Tested During Surveillances (13 February 1996)
- Information Notice 1996-10, Potential Blockage by Debris of Safety System Piping Which is Not Used During Normal Operation or Tested During Surveillances (13 February 1996)
- Information Notice 1996-11, Ingress of Demineralizer Resins Increases Potential For Stress Corrosion Cracking of Control Rod Drive Mechanism Penetrations (14 February 1996)
- Information Notice 1996-11, Ingress of Demineralizer Resins Increases Potential for Stress Corrosion Cracking of Control Rod Drive Mechanism Penetrations (14 February 1996)
- Information Notice 1996-12, Control Rod Insertion Problems (15 February 1996)
- Information Notice 1996-13, Potential Containment Leak Paths Through Hydrogen Analysis (26 February 1996)
- Information Notice 1996-14, Degradation of Radwaste Facility Equipment at Millstone Nuclear Power Station, Unit 1 (1 March 1996)
- Information Notice 1996-15, Unexpected Plant Performance During Performance of New Surveillance (8 March 1996)
- Information Notice 1996-16, BWR Operation with Indicated Flow Less than Natural Circulation (14 March 1996)
- Information Notice 1996-17, Reactor Operation Inconsistent with the Updated Final Safety Analysis Report (18 March 1996)
- Information Notice 1996-18, Compliance with 10 CFR Part 20 for Airborne Thorium (25 March 1996, Topic: Brachytherapy)
- Information Notice 1996-19, Failure of Tone Alert Radios to Activate When Receiving a Shortened Activation Signal (2 April 1996)
- Information Notice 1996-20, Demonstration of Associated Equipment Compliance with 10 CFR 34.20 (4 April 1996, Topic: Brachytherapy)
- Information Notice 1996-21, Safety Concerns Related to the Design of the Door Interlock Circuit on Nucletron High-Dose Rate and Pulsed Dose Rate Remote Afterloading Brachytherapy Devices (10 April 1996, Topic: Brachytherapy)
- Information Notice 1996-22, Improper Equipment Settings Due to Use of Nontemperature-Compensated Test Equipment (11 April 1996, Topic: Brachytherapy)
- Information Notice 1996-23, Fires in Emergency Diesel Generator Exciters During Operation Following Undetected Fuse Blowing (22 April 1996, Topic: Brachytherapy)
- Information Notice 1996-24, Preconditioning of Molded-Case Circuit Breakers Before Surveillance Testing (25 April 1996, Topic: Brachytherapy)
- Information Notice 1996-25, Traversing In-Core Probe Overwithdrawn at Lasalle County Station, Unit 1 (30 April 1996, Topic: Brachytherapy)
- Information Notice 1996-26, Recent Problems with Overhead Cranes (30 April 1996, Topic: Brachytherapy)
- Information Notice 1996-26, Recent Problems With Overhead Cranes (30 April 1996)
- Information Notice 1996-27, Potential Clogging of High Pressure Safety Injection Throttle Valves During Recirculation (1 May 1996, Topic: Brachytherapy)
- Information Notice 1996-28, Suggested Guidance Relating to Development and Implementation of Corrective Action (1 May 1996, Topic: Brachytherapy)
- Information Notice 1996-29, Requirements in 10 CFR Part 21 for Reporting and Evaluating Software Errors (20 May 1996, Topic: Brachytherapy)
- Information Notice 1996-30, Inaccuracy of Diagnostic Equipment for Motor-Operated Butterfly Valves (21 May 1996)
- Information Notice 1996-31, Cross-Tied Safety Injection Accumulators (22 May 1996)
- Information Notice 1996-32, Implementation of 10 CFR 50.55a(g) (6) (II) (A), Augmented Examination of Reactor Vessel (5 June 1996, Topic: Non-Destructive Examination)
- Information Notice 1996-32, Implementation of 10 CFR 50.55a(g) (6) (ii) (A), Augmented Examination of Reactor Vessel (5 June 1996, Topic: Nondestructive Examination)
- Information Notice 1996-33, Erroneous Data From Defective Thermocouple Results in a Fire (24 May 1996, Topic: Reverse polarity)
- Information Notice 1996-33, Erroneous Data from Defective Thermocouple Results in a Fire (24 May 1996, Topic: Reverse polarity)
- Information Notice 1996-34, Hydrogen Gas Ignition During Closure Welding of a VSC-24 Multi-Assembly Sealed Basket (31 May 1996)
- Information Notice 1996-35, Failure of Safety Systems on Self-Shielded Irradiators Because of Inadequate Maintenance and Training (11 June 1996)
- Information Notice 1996-36, Degradation of Cooling Water Systems Due to Icing (12 June 1996, Topic: High winds, Ultimate heat sink, Frazil ice)
- Information Notice 1996-37, Inaccurate Reactor Water Level Indication and Inadvertent Draindown During Shutdown (18 June 1996, Topic: Reactor Vessel Water Level)
- Information Notice 1996-38, Results of Steam Generator Tube Examinations (21 June 1996)
- Information Notice 1996-39, Estimates of Decay Heat Using ANS 5.1 Decay Heat Standard May Vary Significantly (5 July 1996)
- Information Notice 1996-40, Defciencies in Material Dedication and Procurement Practices and in Audits of Vendors (7 October 1996, Topic: Coatings, Troxler Moisture Density Gauge)
- Information Notice 1996-41, Effects of a Decrease in Feedwater Temperature on Nuclear Instrumentation (26 July 1996)
- Information Notice 1996-42, Unexpected Opening of Multiple Safety Relief Valves (5 August 1996, Topic: Reactor Vessel Water Level)
- Information Notice 1996-43, Failures of General Electric Magne-Blast Circuit Breakers (2 August 1996)
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