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| {{#Wiki_filter:CATEGORYREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:9907280113 DOC.DATE: | | {{#Wiki_filter:CATEGORY REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:9907280113 DOC.DATE: 99/07/22 NOTARIZED: |
| 99/07/22NOTARIZED: | | NO FACXL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G AUTH.NAME AUTHOR AFFILIATION MECREDY,R.C. |
| NOFACXL:50-244 RobertEmmetGinnaNuclearPlant,Unit1,Rochester GAUTH.NAMEAUTHORAFFILIATION MECREDY,R.C.
| | Rochester Gas 8 Electric Corp..-RECXP.NAME RECIPIENT AFFILIATION VISSZNG,G.S. |
| Rochester Gas8ElectricCorp..-RECXP.NAME RECIPIENT AFFILIATION VISSZNG,G.S. | |
|
| |
|
| ==SUBJECT:== | | ==SUBJECT:== |
| ForwardsLER98-003-02,re actuations ofCRemergency airtreatment sys.All'REATS actuations,including thoseoriginally believedtobevalidactuations,were, infactinvalidactuations.
| | Forwards LER 98-003-02,re actuations of CR emergency air treatment sys.All'REATS actuations,including those originally believed to be valid actuations,were, in fact invalid actuations. |
| 'DOCKET05000244DISTRIBUTION CODE:IE22TCOPIESRECEIVED:LTR ENCLJSIZE:TITLE:50.73/50.9 LicenseeEventReport(LER),IncidentRpt,etc.NOTES:License Expdateinaccordance with10CFR2,2.109(9/19/72). | | 'DOCKET 05000244 DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL J SIZE: TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.NOTES:License Exp date in accordance with 10CFR2,2.109(9/19/72). |
| 05000244RECIPIENT ZDCODE/NAME LPD1-1PDINTERNAL'/DRIP/REXB RES/DET/ERAB RGN1FILE01COPIESLTTRENCL111111~1111RECIPIENT IDCODE/NAME VZSSING,G.
| | 05000244 RECIPIENT ZD CODE/NAME LPD1-1 PD INTERNAL'/DRIP/REXB RES/DET/ERAB RGN1 FILE 01 COPIES LTTR ENCL 1 1 1 1 1 1~1 1 1 1 RECIPIENT ID CODE/NAME VZSSING,G. |
| NRR/DIPM/ZOLB NRR/DSSA/SPLB RES/DRAA/OERAB COPIESLTTRENCL11111'11EXTERNAL: | | NRR/DIPM/ZOLB NRR/DSSA/SPLB RES/DRAA/OERAB COPIES LTTR ENCL 1 1 1 1 1'1 1 EXTERNAL: L ST LOBBY WARD NOAC POORE,W.NRC PDR 1 1 1 1 1 1 LMITCO MARSHALL NOAC QUEENER,DS NUDOCS FULL TXT 1 1 1~1 1 1 NOTE TO ALL"RIDS" RECIPIENTS: |
| LSTLOBBYWARDNOACPOORE,W.NRCPDR111111LMITCOMARSHALLNOACQUEENER,DS NUDOCSFULLTXT111~111NOTETOALL"RIDS"RECIPIENTS:
| | PLEASE HELP US TO REDUCE WASTE.TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LIS'R REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTRi DESK (DCD)ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 15 ENCL 15 0 4ND ROCHESTER GAS AND ElECTRIC CORPORATION |
| PLEASEHELPUSTOREDUCEWASTE.TOHAVEYOURNAMEORORGANIZATION REMOVEDFROMDISTRIBUTION LIS'RREDUCETHENUMBEROFCOPIESRECEIVEDBYYOUORYOURORGANIZATION, CONTACTTHEDOCUMENTCONTRiDESK(DCD)ONEXTENSION 415-2083FULLTEXTCONVERSION REQUIREDTOTALNUMBEROFCOPIESREQUIRED:
| | ~89 EAST AtrrENUE, ROCHESTER, N.Y.Id6d9-OOOI l'OBERT C.MECREDY Vice President Nvcleor Operotions AREA CODE 716 5'-2700 July 22, 1999 U.S.Nuclear Regulatory Commission Document Control Desk Attn: Guy S.Vissing Project Directorate I-1 Washington, D.C.20555 |
| LTTR15ENCL15 04NDROCHESTER GASANDElECTRICCORPORATION
| |
| ~89EASTAtrrENUE, ROCHESTER, N.Y.Id6d9-OOOI l'OBERTC.MECREDYVicePresident NvcleorOperotions AREACODE7165'-2700July22,1999U.S.NuclearRegulatory Commission DocumentControlDeskAttn:GuyS.VissingProjectDirectorate I-1Washington, D.C.20555 | |
|
| |
|
| ==Subject:== | | ==Subject:== |
| LER1998-003, Revision2,Actuations ofControlRoomEmergency AirTreatment SystemDuetoInvalidCausesR.EDGinnaNuclearPowerPlantDocketNo.50-244
| | LER 1998-003, Revision 2, Actuations of Control Room Emergency Air Treatment System Due to Invalid Causes R.ED Ginna Nuclear Power Plant Docket No.50-244 |
|
| |
|
| ==DearMr.Vissing:== | | ==Dear Mr.Vissing:== |
| Inaccordance with10CFR50.73,LicenseeEventReportSystem,item(a)(2)(iv),whichrequiresareportof,"anyeventorcondition thatresultedinmanualorautomatic actuation ofanyEngineered SafetyFeature(ESF),including theReactorProtection System(RPS)",theattachedLicenseeEventReportLER1998-003(Revision 2)isherebysubmitted.
| | In accordance with 10 CFR 50.73, Licensee Event Report System, item (a)(2)(iv), which requires a report of,"any event or condition that resulted in manual or automatic actuation of any Engineered Safety Feature (ESF), including the Reactor Protection System (RPS)", the attached Licensee Event Report LER 1998-003 (Revision 2)is hereby submitted. |
| Ithasbeendetermined thattherewerevariousdegradedcomponents intheControlRoomRadiation Monitoring system.Thesedegradedcomponents resultedinelectronic spikesinthereadingsonthemonitors.
| | It has been determined that there were various degraded components in the Control Room Radiation Monitoring system.These degraded components resulted in electronic spikes in the readings on the monitors.The higher concentrations of Radon and Radon decay products caused the margin to the trip setpoint to be reduced.Thus, in the presence of elevated Radon levels, the electronic spikes caused a setpoint to be exceeded.When elevated Radon levels were not present, larger spikes also caused a setpoint to be exceeded.The degraded components, resulting in electronic spikes, were the root cause of the Control Room Emergency Air Treatment System (CREATS)actuations. |
| Thehigherconcentrations ofRadonandRadondecayproductscausedthemargintothetripsetpointtobereduced.Thus,inthepresenceofelevatedRadonlevels,theelectronic spikescausedasetpointtobeexceeded.
| | All CREATS actuations, including those originally believed to be valid actuations, were, in fact, invalid actuations. |
| WhenelevatedRadonlevelswerenotpresent,largerspikesalsocausedasetpointtobeexceeded.
| | Very truly yours, Robert C.Mecred F'9907280i13 990722 PDR ADOCK 05000244 8 PDR xc: Mr.Guy S.Vissing (Mail Stop 8C2)Project Directorate I-1 Division of Reactor Projects-I/II Office of Nuclear Reactor Regulation U.S.Nuclear Regulatory Commission Washington, D.C.20555 Regional Administrator, Region I U.S.Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 U.S.NRC Ginna Senior Resident Inspector}} |
| Thedegradedcomponents, resulting inelectronic spikes,weretherootcauseoftheControlRoomEmergency AirTreatment System(CREATS)actuations.
| |
| AllCREATSactuations, including thoseoriginally believedtobevalidactuations, were,infact,invalidactuations.
| |
| Verytrulyyours,RobertC.MecredF'9907280i13 990722PDRADOCK050002448PDR xc:Mr.GuyS.Vissing(MailStop8C2)ProjectDirectorate I-1DivisionofReactorProjects-I/IIOfficeofNuclearReactorRegulation U.S.NuclearRegulatory Commission Washington, D.C.20555RegionalAdministrator, RegionIU.S.NuclearRegulatory Commission 475Allendale RoadKingofPrussia,PA19406U.S.NRCGinnaSeniorResidentInspector}}
| |
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Requests Relief Per 10CFR50.55a(a)(3)(ii) from Certain Requirements of Section XI of ASME Bp&V Code for ISI Program.Relief Requests 37,38 & 39 Encl
ML17265A5101999-01-11011 January 1999
Requests Relief Per to 10CFR50.55a(a)(3)(ii) from Certain Requirements of Section XI of ASME B&PV Code for ISI Program.Relief Request 40 Encl
1999-09-30
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CATEGORY REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:9907280113 DOC.DATE: 99/07/22 NOTARIZED:
NO FACXL:50-244 Robert Emmet Ginna Nuclear Plant, Unit 1, Rochester G AUTH.NAME AUTHOR AFFILIATION MECREDY,R.C.
Rochester Gas 8 Electric Corp..-RECXP.NAME RECIPIENT AFFILIATION VISSZNG,G.S.
SUBJECT:
Forwards LER 98-003-02,re actuations of CR emergency air treatment sys.All'REATS actuations,including those originally believed to be valid actuations,were, in fact invalid actuations.
'DOCKET 05000244 DISTRIBUTION CODE: IE22T COPIES RECEIVED:LTR ENCL J SIZE: TITLE: 50.73/50.9 Licensee Event Report (LER), Incident Rpt, etc.NOTES:License Exp date in accordance with 10CFR2,2.109(9/19/72).
05000244 RECIPIENT ZD CODE/NAME LPD1-1 PD INTERNAL'/DRIP/REXB RES/DET/ERAB RGN1 FILE 01 COPIES LTTR ENCL 1 1 1 1 1 1~1 1 1 1 RECIPIENT ID CODE/NAME VZSSING,G.
NRR/DIPM/ZOLB NRR/DSSA/SPLB RES/DRAA/OERAB COPIES LTTR ENCL 1 1 1 1 1'1 1 EXTERNAL: L ST LOBBY WARD NOAC POORE,W.NRC PDR 1 1 1 1 1 1 LMITCO MARSHALL NOAC QUEENER,DS NUDOCS FULL TXT 1 1 1~1 1 1 NOTE TO ALL"RIDS" RECIPIENTS:
PLEASE HELP US TO REDUCE WASTE.TO HAVE YOUR NAME OR ORGANIZATION REMOVED FROM DISTRIBUTION LIS'R REDUCE THE NUMBER OF COPIES RECEIVED BY YOU OR YOUR ORGANIZATION, CONTACT THE DOCUMENT CONTRi DESK (DCD)ON EXTENSION 415-2083 FULL TEXT CONVERSION REQUIRED TOTAL NUMBER OF COPIES REQUIRED: LTTR 15 ENCL 15 0 4ND ROCHESTER GAS AND ElECTRIC CORPORATION
~89 EAST AtrrENUE, ROCHESTER, N.Y.Id6d9-OOOI l'OBERT C.MECREDY Vice President Nvcleor Operotions AREA CODE 716 5'-2700 July 22, 1999 U.S.Nuclear Regulatory Commission Document Control Desk Attn: Guy S.Vissing Project Directorate I-1 Washington, D.C.20555
Subject:
LER 1998-003, Revision 2, Actuations of Control Room Emergency Air Treatment System Due to Invalid Causes R.ED Ginna Nuclear Power Plant Docket No.50-244
Dear Mr.Vissing:
In accordance with 10 CFR 50.73, Licensee Event Report System, item (a)(2)(iv), which requires a report of,"any event or condition that resulted in manual or automatic actuation of any Engineered Safety Feature (ESF), including the Reactor Protection System (RPS)", the attached Licensee Event Report LER 1998-003 (Revision 2)is hereby submitted.
It has been determined that there were various degraded components in the Control Room Radiation Monitoring system.These degraded components resulted in electronic spikes in the readings on the monitors.The higher concentrations of Radon and Radon decay products caused the margin to the trip setpoint to be reduced.Thus, in the presence of elevated Radon levels, the electronic spikes caused a setpoint to be exceeded.When elevated Radon levels were not present, larger spikes also caused a setpoint to be exceeded.The degraded components, resulting in electronic spikes, were the root cause of the Control Room Emergency Air Treatment System (CREATS)actuations.
All CREATS actuations, including those originally believed to be valid actuations, were, in fact, invalid actuations.
Very truly yours, Robert C.Mecred F'9907280i13 990722 PDR ADOCK 05000244 8 PDR xc: Mr.Guy S.Vissing (Mail Stop 8C2)Project Directorate I-1 Division of Reactor Projects-I/II Office of Nuclear Reactor Regulation U.S.Nuclear Regulatory Commission Washington, D.C.20555 Regional Administrator, Region I U.S.Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 U.S.NRC Ginna Senior Resident Inspector
