ML17250A540: Difference between revisions

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=Text=
=Text=
{{#Wiki_filter:REGULATORY r"ORMATION DISTRIBUTION SYS"M(RIDS)ACCESSION NBR:8009090513 DOC~DATE:80/09/03NOTARIZED:
{{#Wiki_filter:REGULATORY r"ORMATION DISTRIBUTION SYS"M (RIDS)ACCESSION NBR: 8009090513 DOC~DATE: 80/09/03 NOTARIZED:
NO'.DOCKETFACIL:50-244 RobertEmmetGinnaNuclearPlantPUnitiiRochester G05000244AUTHINANEAUTHORAFFIL'IATION HHITEEL.D~Rochester GasLElectricCorp.RECIP~iVAMERECIPIENT AFFILIATION CRUTCHFIELDPD
NO'.DOCKET FACIL:50-244 Robert Emmet Ginna Nuclear Pl ant P Unit ii Rochester G 05000244 AUTH INANE AUTHOR AFFIL'IATION HHI TEE L.D~Rochester Gas L Electric Corp.REC IP~iVAME RECIPIENT AFFILIATION CRUTCHFIELDPD
~Operating ReactorsBranch5
~Operating Reactors Branch 5


==SUBJECT:==
==SUBJECT:==
RespondstoNRC800811requestforinfo.regenericreviewofdegradedgrid,voltage.All low-voltagegi25 voltacClassIEbusesaresuppliedfromeitheruniterruptable powersoUrceorregulated 480/125-volt transformers'ISTRIBUTION CODE:ADIBSCOPIESRECEIYED:LiTR g'NCLQSIZEITITLE:OnsiteEmergencyPowerSystemsNOTES:1copy:SEPSect.Ldr.05000244RECIPIENT IDCODE/NAME ACTION:CRUTCHF-IELD 04INTERNAL:
Responds to NRC 800811 request for info.re generic review of degraded grid, voltage.All low-voltagegi25 volt ac Class IE buses are supplied from either uniterruptable power soUrce or regulated 480/125-volt transformers'ISTRIBUTION CODE: A DIBS COPIES RECEIYED:LiTR g'NCL Q SIZE I TITLE: Onsi te Emer gency Power Systems NOTES:1 copy:SEP Sect.Ldr.05000244 RECIPIENT ID CODE/NAME ACTION: CRUTCHF-IELD 04 INTERNAL: AEOD ISC SYS BR 09 MPA 18 OELD 17 OR BR 12 G FILE 01 COPIES Lfl'TR EN L 7 RECIPIENT ID CODE/NAME'EN ISSUES BR13 ILE 06 NRC PDR 02 OP EX EVALl BR11, POHER SYS BR 14 COPIES LTTR ENCL'XTERNAL:
AEODISCSYSBR09MPA18OELD17ORBR12GFILE01COPIESLfl'TRENL7RECIPIENT IDCODE/NAME'EN ISSUESBR13ILE06NRCPDR02OPEXEVALlBR11,POHERSYSBR14COPIESLTTRENCL'XTERNAL:
ACRS NSIC 16 05 16 1 LPDR 03~EF'e tgao o TOTAL NUMBER OP COPIES REQUIRED: LTTR Pf ENCL;gj/
ACRSNSIC1605161LPDR03~EF'etgaooTOTALNUMBEROPCOPIESREQUIRED:
0 a'P 4 e>I 4 F st"fs''I tg" f II C I"zw L n[f'V~(lg'1\II II
LTTRPfENCL;gj/
0a'P4e>I4Fst"fs''Itg"fIICI"zwLn[f'V~(lg'1\IIII
-~///IIIIIII/l/III I/I/IIIIIII
-~///IIIIIII/l/III I/I/IIIIIII
.>'igjjeIIIIIIIII 5;'IIII//8
.>'igjje IIIIIIIII 5;'IIII//8
/I/I/I///IIII ROCHESTER GASANDELECTRICCORPORATION o89EASTAVENUE,ROCHESTER, N,Y.14649LEOND.WHITE,JR.VICEPRESIOCNT TCI.CPHONC ARCACOOC7ld546-2700September 3,1980OfficeofNuclearReactorRegulation Attention:
/I/I/I///IIII ROCHESTER GAS AND ELECTRIC CORPORATION o 89 EAST AVENUE, ROCHESTER, N,Y.14649 LEON D.WHITE, JR.VICE PRESIOCNT TCI.CPHONC ARCA COOC 7ld 546-2700 September 3, 1980 Office of Nuclear Reactor Regulation Attention:
Mr.Dennis.M.
Mr.Dennis.M.Crutchfield, Chief Operating Reactors Branch No.5 U.S.Nuclear Regulatory Commission Washington, D.C.20555  
Crutchfield, ChiefOperating ReactorsBranchNo.5U.S.NuclearRegulatory Commission Washington, D.C.20555


==Subject:==
==Subject:==
DegradedGridVoltage,GenericReview
Degraded Grid Voltage, Generic Review


==DearMr.Crutchfield:==
==Dear Mr.Crutchfield:==


InresponsetoyourAugust11,1980requestforadditional information thefollowing isprovidedforyouruseincompleting yourgenericstudy.Alllow-volta'ge, 125volt,ACClassIEbusesat.GinnaStationaresuppliedfromeitheranuninterruptable powersource(UPS)orfromregulated 480/125volttransformers.
In response to your August 11, 1980 request for additional information the following is provided for your use in completing your generic study.All low-volta'ge, 125 volt, AC Class IE buses at.Ginna Station are supplied from either an uninterruptable power source (UPS)or from regulated 480/125 volt transformers.
Thusthese125VIEbusesarenotsusceptible tovariations inoffsitesourcevoltagelevels.Inthiswaythereguirements ofGDC-13aremet.Theinstrumentation and/orcontrolssuppliedbytheseIEbuseswillperformovertheiranticipated rangesduringtheoffsitevoltagerangesestablished inourDecember6,1979report.Forthisreason,the125voltClassbusseswerenotmodeledintheGinnainteractive loadflowprogramandnocalculations wereperformed onthissystem.Sincerely, L.D.Whie,Jr.POI55/oSI909OSSPLJ t\t'I}}
Thus these 125V IE buses are not susceptible to variations in offsite source voltage levels.In this way the reguirements of GDC-13 are met.The instrumentation and/or controls supplied by these IE buses will perform over their anticipated ranges during the offsite voltage ranges established in our December 6, 1979 report.For this reason, the 125 volt Class busses were not modeled in the Ginna interactive load flow program and no calculations were performed on this system.Sincerely, L.D.Whi e, Jr.POI5 5/o SI909OSS PL J t\t'I}}

Revision as of 14:57, 7 July 2018

Responds to NRC 800811 Request for Info Re Generic Review of Degraded Grid Voltage.All low-voltage,125-volt Ac Class IE Buses Are Supplied from Either Uninterruptable Power Source or Regulated 480/125-volt Transformers
ML17250A540
Person / Time
Site: Ginna Constellation icon.png
Issue date: 09/03/1980
From: WHITE L D
ROCHESTER GAS & ELECTRIC CORP.
To: CRUTCHFIELD D
Office of Nuclear Reactor Regulation
References
TASK-08-01.A, TASK-8-1.A, TASK-RR NUDOCS 8009090513
Download: ML17250A540 (4)
v • d • e


Text

REGULATORY r"ORMATION DISTRIBUTION SYS"M (RIDS)ACCESSION NBR: 8009090513 DOC~DATE: 80/09/03 NOTARIZED:

NO'.DOCKET FACIL:50-244 Robert Emmet Ginna Nuclear Pl ant P Unit ii Rochester G 05000244 AUTH INANE AUTHOR AFFIL'IATION HHI TEE L.D~Rochester Gas L Electric Corp.REC IP~iVAME RECIPIENT AFFILIATION CRUTCHFIELDPD

~Operating Reactors Branch 5

SUBJECT:

Responds to NRC 800811 request for info.re generic review of degraded grid, voltage.All low-voltagegi25 volt ac Class IE buses are supplied from either uniterruptable power soUrce or regulated 480/125-volt transformers'ISTRIBUTION CODE: A DIBS COPIES RECEIYED:LiTR g'NCL Q SIZE I TITLE: Onsi te Emer gency Power Systems NOTES:1 copy:SEP Sect.Ldr.05000244 RECIPIENT ID CODE/NAME ACTION: CRUTCHF-IELD 04 INTERNAL: AEOD ISC SYS BR 09 MPA 18 OELD 17 OR BR 12 G FILE 01 COPIES Lfl'TR EN L 7 RECIPIENT ID CODE/NAME'EN ISSUES BR13 ILE 06 NRC PDR 02 OP EX EVALl BR11, POHER SYS BR 14 COPIES LTTR ENCL'XTERNAL:

ACRS NSIC 16 05 16 1 LPDR 03~EF'e tgao o TOTAL NUMBER OP COPIES REQUIRED: LTTR Pf ENCL;gj/

0 a'P 4 e>I 4 F st"fsI tg" f II C I"zw L n[f'V~(lg'1\II II

-~///IIIIIII/l/III I/I/IIIIIII

.>'igjje IIIIIIIII 5;'IIII//8

/I/I/I///IIII ROCHESTER GAS AND ELECTRIC CORPORATION o 89 EAST AVENUE, ROCHESTER, N,Y.14649 LEON D.WHITE, JR.VICE PRESIOCNT TCI.CPHONC ARCA COOC 7ld 546-2700 September 3, 1980 Office of Nuclear Reactor Regulation Attention:

Mr.Dennis.M.Crutchfield, Chief Operating Reactors Branch No.5 U.S.Nuclear Regulatory Commission Washington, D.C.20555

Subject:

Degraded Grid Voltage, Generic Review

Dear Mr.Crutchfield:

In response to your August 11, 1980 request for additional information the following is provided for your use in completing your generic study.All low-volta'ge, 125 volt, AC Class IE buses at.Ginna Station are supplied from either an uninterruptable power source (UPS)or from regulated 480/125 volt transformers.

Thus these 125V IE buses are not susceptible to variations in offsite source voltage levels.In this way the reguirements of GDC-13 are met.The instrumentation and/or controls supplied by these IE buses will perform over their anticipated ranges during the offsite voltage ranges established in our December 6, 1979 report.For this reason, the 125 volt Class busses were not modeled in the Ginna interactive load flow program and no calculations were performed on this system.Sincerely, L.D.Whi e, Jr.POI5 5/o SI909OSS PL J t\t'I

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