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| {{#Wiki_filter:ACCELEBRATED DISTRIBUTION DEMONSTRATION SYSTEMREGULATORY INFORMATION DISTRIBUTION SYSTEM(RIDS)ACCESSION NBR:8807070374 DOC.DATE: | | {{#Wiki_filter:AC CELEBRATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:8807070374 DOC.DATE: 88/06/24 NOTARIZED: |
| 88/06/24NOTARIZED: | | NO DOCKET FACIL:50-315 Donald C.Cook Nuclear Power Plant, Unit 1, Indiana 6 05000315 50-316 Donald C.Cook Nuclear Power Plant, Unit 2, Indiana&05000316 AUTH.NAME AUTHOR AFFILIATION ALEXICH,M.P. |
| NODOCKETFACIL:50-315 DonaldC.CookNuclearPowerPlant,Unit1,Indiana60500031550-316DonaldC.CookNuclearPowerPlant,Unit2,Indiana&05000316AUTH.NAMEAUTHORAFFILIATION ALEXICH,M.P.
| | Indiana Michigan Power Co.RECIP.NAME RECIPIENT AFFILIATION DAVIS,A.B. |
| IndianaMichiganPowerCo.RECIP.NAME RECIPIENT AFFILIATION DAVIS,A.B.
| | Document Control Branch (Document Control Desk) |
| DocumentControlBranch(Document ControlDesk)
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| ==SUBJECT:== | | ==SUBJECT:== |
| Forwardsaddiinforepotential enforcement itemsnotedduringenvironqualification auditon860421-30.
| | Forwards addi info re potential enforcement items noted during environ qualification audit on 860421-30. |
| DISTRIBUTION CODE:IE01DCOPIESRECEIVED:LTR | | DISTRIBUTION CODE: IE01D COPIES RECEIVED:LTR |
| ]ENCLLSIZE:TITLE:General(50Dkt)-Insp Rept/Notice ofVioTation ResponseNOTES:DSRECIPIENT IDCODE/NAME PD3-1PDINTERNAL: | | ]ENCL L SIZE: TITLE: General (50 Dkt)-Insp Rept/Notice of VioTation Response NOTES: D S RECIPIENT ID CODE/NAME PD3-1 PD INTERNAL: AEOD NRR MORISSEAU,D NRR/DLPQ/QAB 10 NRR/DREP/EPB 10 NRR/DRIS DIR 9A NUDOCS-ABSTRACT OGC 15-B-18 RES/DRPS DEPY EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RECIPIENT ID CODE/NAME STANG,J DEDRO NRR/DLPQ/PEB 11 NRR/DOEA DIR 11 NRR/DREP/RPB 10 NRR/PMAS/ILRB12 OE L~ERMAN,J~~ILE 02 RGN3 LE 01 NRC PDR COPIES LTTR ENCL 2 2 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 J'D D S TOTAL NUMBER OF COPIES REQUIRED: LTTR 23 ENCL 23 Power Company p0 Box f6631 Coiumous.OH 43'~fHllMNA MfCHfQAN fIOWI'R AEP:NRC:0775AN Donald C.Cook Nuclear Plant Units 1 and 2 Docket Nos.50-315 and 50-316 License Nos.DPR-58 and DPR-74 DONALD C.COOK NUCLEAR PLANT ENVIRONMENTAL QUALIFICATION INSPECTION |
| AEODNRRMORISSEAU,D NRR/DLPQ/QAB 10NRR/DREP/EPB 10NRR/DRISDIR9ANUDOCS-ABSTRACT OGC15-B-18RES/DRPSDEPYEXTERNAL:
| | -ADDITIONAL INFORMATION U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555 Attn: A, B.Davis June 24, 1988 |
| LPDRNSICCOPIESLTTRENCL1111111111111111111111RECIPIENT IDCODE/NAME STANG,JDEDRONRR/DLPQ/PEB 11NRR/DOEADIR11NRR/DREP/RPB 10NRR/PMAS/ILRB12 OEL~ERMAN,J
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| ~~ILE02RGN3LE01NRCPDRCOPIESLTTRENCL22111111221111111111J'DDSTOTALNUMBEROFCOPIESREQUIRED: | |
| LTTR23ENCL23 PowerCompanyp0Boxf6631Coiumous.
| |
| OH43'~fHllMNAMfCHfQANfIOWI'RAEP:NRC:0775AN DonaldC.CookNuclearPlantUnits1and2DocketNos.50-315and50-316LicenseNos.DPR-58andDPR-74DONALDC.COOKNUCLEARPLANTENVIRONMENTAL QUALIFICATION INSPECTION
| |
| -ADDITIONAL INFORMATION U.S.NuclearRegulatory Commission Attn:DocumentControlDeskWashington, D.C.20555Attn:A,B.DavisJune24,1988 | |
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| ==DearMr.Davis:== | | ==Dear Mr.Davis:== |
| Inresponsetoarequestfromyourstaff,weareproviding additional information regarding potential enforcement itemsidentified duringtheDonaldC.CookNuclearPlantEnvironmental Qualification Auditconducted duringtheperiodApril21-30,1986(Inspection ReportNos,50-315/86015; 50-316/&6015 Attachment 1).Alsoincludedisinformation abouttworecentlydiscovered conditions involving themixing,of,greasesinLimitorque motoroperators andundocumented materials foundinLimitorque motoroperators.
| | In response to a request from your staff, we are providing additional information regarding potential enforcement items identified during the Donald C.Cook Nuclear Plant Environmental Qualification Audit conducted during the period April 21-30, 1986 (Inspection Report Nos, 50-315/86015; 50-316/&6015 Attachment 1).Also included is information about two recently discovered conditions involving the mixing, of, greases in Limitorque motor operators and undocumented materials found in Limitorque motor operators. |
| Someoftheenclosedmaterialhasbeenpreviously providedinoursubmittal AEP:NRC:0775AE, "Equipment Environmental Qualification Audit,"datedMay29,1986.Inspection reportItem1statedthattheEnvironmental Qualification fileswerenotauditable, inthattherecordswerenotreadilyretrievable.
| | Some of the enclosed material has been previously provided in our submittal AEP:NRC:0775AE,"Equipment Environmental Qualification Audit," dated May 29, 1986.Inspection report Item 1 stated that the Environmental Qualification files were not auditable, in that the records were not readily retrievable. |
| Althoughwebelievedthatthefileswereauditable atthetimeoftheinspection, werecognize thatindependent useofthefilesdidrequiresomeindoctrination tothefilingsystemthatexistedatthetime.Wehavemadeenhancements tothefilingsystemandnowbelievethatitcanbeusedbyanoutsideauditorwithminimalassistance fromAEPSCpersonnel.
| | Although we believed that the files were auditable at the time of the inspection, we recognize that independent use of the files did require some indoctrination to the filing system that existed at the time.We have made enhancements to the filing system and now believe that it can be used by an outside auditor with minimal assistance from AEPSC personnel. |
| Thefollowing stepshavebeentakentoenhanceourEQfile;1.Establishment ofaMasterEQComputerDataBase.8807070374 880624F'DRADOCK05000315PDC Mr.A.B.Davis-2-AEP'NRC'0775AN 2.AchangewasmadetotheSystemComponent Evaluation Work(SCEW)SheetPackagestoreference specificfilelocations forthedocumentation ofSpecified andQualified parameters.
| | The following steps have been taken to enhance our EQ file;1.Establishment of a Master EQ Computer Data Base.8807070374 880624 F'DR ADOCK 05000315 PDC Mr.A.B.Davis-2-AEP'NRC'0775AN 2.A change was made to the System Component Evaluation Work (SCEW)Sheet Packages to reference specific file locations for the documentation of Specified and Qualified parameters. |
| Also,abriefdescription ofthereferenced documenthasbeenincluded. | | Also, a brief description of the referenced document has been included.3.SCEW sheet packets now include specific primary and supplementary references, and the applicable article in the Surveillance/Maintenance/Replacement (S/M/R)program.The packet also states the level of qualification (DOR Guidelines or NUREG 0588, Category I)and contains a positive statement of the environmental qualification of the sub]ect device.Inspection report Item 2, qualification of Conax electrical penetrations, Haveg Kapton insulated penetration feedthrough and pigtail extension wire, and Brand Rex triaxial cable, is addressed in Attachment 2.This attachment also contains relevant pages from the Brand Rex test report which were also requested. |
| 3.SCEWsheetpacketsnowincludespecificprimaryandsupplementary references, andtheapplicable articleintheSurveillance/Maintenance/Replacement (S/M/R)program.Thepacketalsostatesthelevelofqualification (DORGuidelines orNUREG0588,CategoryI)andcontainsapositivestatement oftheenvironmental qualification ofthesub]ectdevice.Inspection reportItem2,qualification ofConaxelectrical penetrations, HavegKaptoninsulated penetration feedthrough andpigtailextension wire,andBrandRextriaxialcable,isaddressed inAttachment 2.Thisattachment alsocontainsrelevantpagesfromtheBrandRextestreportwhichwerealsorequested. | | S It is our understanding that inspection report Item 3 is no longer an issue.Inspection report Item 4, lack of a T-drain in IM0-54, is addressed in Attachment 3.After review, it was determined that environmental qualification of this valve is not required.Inspection report Item 5, ZSO-122.configuration, concerns a containment ventilation isolation valve located inside containment. |
| SItisourunderstanding thatinspection reportItem3isnolongeranissue.Inspection reportItem4,lackofaT-draininIM0-54,isaddressed inAttachment 3.Afterreview,itwasdetermined thatenvironmental qualification ofthisvalveisnotrequired.
| | It is required to operate for 5 seconds following an accident.It is a fail-closed valve, and its electrical installation does not need to be environmentally qualified. |
| Inspection reportItem5,ZSO-122.configuration, concernsacontainment ventilation isolation valvelocatedinsidecontainment. | | Inadvertent energizing of the circuitry is prevented by the"Double Break" philosophy used for these circuits.Solenoid coil failure as a result of moisture intrusion will also cause the solenoid valve to fail safe.This was addressed in our previous submittal and reviewed and closed during a followup inspection conducted August 25-28 and September 29 and 30, 1986 (50-315/86033(DRS); |
| Itisrequiredtooperatefor5secondsfollowing anaccident.
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| Itisafail-closed valve,anditselectrical installation doesnotneedtobeenvironmentally qualified.
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| Inadvertent energizing ofthecircuitry isprevented bythe"DoubleBreak"philosophy usedforthesecircuits. | |
| Solenoidcoilfailureasaresultofmoistureintrusion willalsocausethesolenoidvalvetofailsafe.Thiswasaddressed inourprevioussubmittal andreviewedandclosedduringafollowupinspection conducted August25-28andSeptember 29and30,1986(50-315/86033(DRS);
| |
| 50-316/86033(DRS)). | | 50-316/86033(DRS)). |
| Inspection reportItem6,Foxborodifferential transmitter configuration, wasaddressed inourprevioussubmittal, andisincludedhereasAttachment 4.Thiswasreviewedandclosedduringthepreviously notedfollowupinspection. | | Inspection report Item 6, Foxboro differential transmitter configuration, was addressed in our previous submittal, and is included here as Attachment 4.This was reviewed and closed during the previously noted followup inspection. |
| Mr.A.B.Davis-3-AEP:NRC:0775AN Additional ItemsInadditiontothepreceding items,untestedtorqueswitchmaterials werefoundinLimitorque motoroperators usedintheCookNuclearPlant.Thedetailsareprovidedinareportsubmitted byInd'anaMichiganPowerCompanyundertheprovisions of10CFR21(Attachment 5).Following thediscovery, aplanforcorrective actionhasbeenestablished andimplementation isinprogress. | | Mr.A.B.Davis-3-AEP:NRC:0775AN Additional Items In addition to the preceding items, untested torque switch materials were found in Limitorque motor operators used in the Cook Nuclear Plant.The details are provided in a report submitted by Ind'ana Michigan Power Company under the provisions of 10 CFR 21 (Attachment 5).Following the discovery, a plan for corrective action has been established and implementation is in progress.Also justifications for continued operation were prepared and provided to the NRC for review.A final item concerns contaminated greases found in the limit switch compartment of valve operators supplied by Limitorque. |
| Alsojustifications forcontinued operation werepreparedandprovidedtotheNRCforreview.Afinalitemconcernscontaminated greasesfoundinthelimitswitchcompartment ofvalveoperators suppliedbyLimitorque.
| | The valve operators were delivered and installed in Cook Nuclear Plant Unit 1'after November 30, 1985.~While disassembling the operators which were to be installed in Unit 2, a small amount of a grease (Mobilgrease 28)different from the bulk grease (Exxon Beacon 325)was discovered. |
| Thevalveoperators weredelivered andinstalled inCookNuclearPlantUnit1'afterNovember30,1985.~Whiledisassembling theoperators whichweretobeinstalled inUnit2,asmallamountofagrease(Mobilgrease 28)different fromthebulkgrease(ExxonBeacon325)wasdiscovered.
| | It was determined that the contamination occurred at the vendor's test facility.Since the Unit 1 motor operators were not disassembled prior to installation, it is not known whether their limit switch compartments also contain a small amount of Mobilgrease 28.However, the Unit 1 and 2 operators were delivered at.the same time.The subsequent investigation included calls to Limitorque Corporation, Mobil Corporation and Mr.R.Bolt, an independent consultant. |
| Itwasdetermined thatthecontamination occurredatthevendor'stestfacility.
| | Based on these conversations, we have concluded that the amount of Mobilgrease 28 found in the actuator limit switch compartment does not affect the operation of the limit switches and the environmental qualification of the actuators was not compromised. |
| SincetheUnit1motoroperators werenotdisassembled priortoinstallation, itisnotknownwhethertheirlimitswitchcompartments alsocontainasmallamountofMobilgrease 28.However,theUnit1and2operators weredelivered at.thesametime.Thesubsequent investigation includedcallstoLimitorque Corporation, MobilCorporation andMr.R.Bolt,anindependent consultant.
| | Replacement of the torque switches (Units 1 and 2)and regreasing of the limit switch compartments (Unit 1)is to be done during the current Unit 2 outage and during the next Unit 1 refueling outage which is currently anticipated to occur in March 1989, Mr.A.B.Davis-4-AKP:NRC:0775AN This document has been prepared following Corporate procedures which incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned. |
| Basedontheseconversations, wehaveconcluded thattheamountofMobilgrease 28foundintheactuatorlimitswitchcompartment doesnotaffecttheoperation ofthelimitswitchesandtheenvironmental qualification oftheactuators wasnotcompromised.
| | Sincerely, M..Ale ich Vice President MPA/eh Attachments cc: D.H.Williams, Jr.W.G.Smith, Jr.-Bridgman R.CD Callen G.Bruchmann G.Charnoff NRC Resident Inspector-Bridgman A.B.Davis-Region II1 Attachment 1 to AEP:NRC:0775AN Inspection Report 50-315/86015; 50-316/86015 Appendix A-Potential Enforcement/Unresolved Items Appendix A Potential Enforcement/Unresolved Items As a result of the special equipment qualification inspection of April 21-25, and 29-30, 1986, the following items have been referred to NRC Region III as Potential Enforcement/Unresolved Items (paragraph references are to detailed portions of the inspection report).Contrary to paragraph (j)of 10 CFR 50.49, the American Electric Power 5 C (AEPSC)EQ d i fGal" ch extent that the organization of documentation was not rea y un erstand-able and traceable to permi t independent verification of conclusions (Para-graph 4,F(1), Item 50-315/86015-01; 50-316/86015-01). |
| Replacement ofthetorqueswitches(Units1and2)andregreasing ofthelimitswitchcompartments (Unit1)istobedoneduringthecurrentUnit2outageandduringthenextUnit1refueling outagewhichiscurrently anticipated tooccurinMarch1989, Mr.A.B.Davis-4-AKP:NRC:0775AN Thisdocumenthasbeenpreparedfollowing Corporate procedures whichincorporate areasonable setofcontrolstoensureitsaccuracyandcompleteness priortosignature bytheundersigned. | | 2.3.4, 6.Contrary to paragraphs (f)and (k)of 10 CFR 50.49, and Se'ction 5.2.5 of the DOR Guidelines, the Eg files for (1)Conax electrical penetration assem-blies (600 volt and below), model 2325-8386-01 through 11 and 15;(2)Haveg Kapton insulated penetration feedthrough and pigtail extension wire;and (3)Brand Rex triaxial cable, type RG 11/U, did not adequately demonstrate qualification because of failure to show that the equipment functional per-formance requirements were satisfied. |
| Sincerely, M..AleichVicePresident MPA/ehAttachments cc:D.H.Williams, Jr.W.G.Smith,Jr.-BridgmanR.CDCallenG.Bruchmann G.CharnoffNRCResidentInspector | | No analyses were found which address how measured parameters taken during the type test (IR readings as an exam-ple)would affect plant circuits, when used in units 1 and 2 (Paragraphs 4.F(2), 4.F(3), 4.F(4), Item 50-315/86015-02; 50-316/86015-02). |
| -BridgmanA.B.Davis-RegionII1 Attachment 1toAEP:NRC:0775AN Inspection Report50-315/86015; 50-316/86015 AppendixA-Potential Enforcement/Unresolved Items AppendixAPotential Enforcement/Unresolved ItemsAsaresultofthespecialequipment qualification inspection ofApril21-25,and29-30,1986,thefollowing itemshavebeenreferredtoNRCRegionIIIasPotential Enforcement/Unresolved Items(paragraph references aretodetailedportionsoftheinspection report).Contrarytoparagraph (j)of10CFR50.49,theAmericanElectricPower5C(AEPSC)EQdifGal"chextentthattheorganization ofdocumentation wasnotreayunerstand-ableandtraceable topermitindependent verification ofconclusions (Para-graph4,F(1),Item50-315/86015-01; 50-316/86015-01). | | Contrary to paragraphs (f)and (k)of 10 CFR 50.49 and Section 5.2,2.of the DOR Guidelines, the installed configuration of seven Limitorque motor operators (four in uni t 1 and three in uni t 2)were not the same as qual-ified by type test, in that undocumented wire was identified within the limit switch assembly housings (Paragraph 4.F(6)a, Item 50-315/86015-03; 50-316/86015-03). |
| 2.3.4,6.Contrarytoparagraphs (f)and(k)of10CFR50.49,andSe'ction5.2.5oftheDORGuidelines, theEgfilesfor(1)Conaxelectrical penetration assem-blies(600voltandbelow),model2325-8386-01 through11and15;(2)HavegKaptoninsulated penetration feedthrough andpigtailextension wire;and(3)BrandRextriaxialcable,typeRG11/U,didnotadequately demonstrate qualification becauseoffailuretoshowthattheequipment functional per-formancerequirements weresatisfied. | | Contrary to paragraphs (f)and (k)of 1C CFR 50.49 and Section 5.2.2.of the DOR Guidelines, the installed configuration of Limitorque motor operator, DC Cook Tag No.IM0-54, located inside the unit 2 containment, was not the same as qualified by type test in that"T" drains (motor housing)and grease relief valves (gearbox housing)had not been installed (Paragraph 4.!-:(1)a, Item 50-316/86015-04). |
| Noanalyseswerefoundwhichaddresshowmeasuredparameters takenduringthetypetest(IRreadingsasanexam-ple)wouldaffectplantcircuits, whenusedinunits1and2(Paragraphs 4.F(2),4.F(3),4.F(4),Item50-315/86015-02; 50-316/86015-02).
| | Contrary to paragraphs (f)and (k)of 10 CFR 50.49 and Section 5.2.2 of the DOR Guidelines, the installed configuration of ASCO solenoid valve, Model NP-8316-54 Y, DC Cook Tag No.XSO-122 was not the same as qualified by type test in that moisture seals were not provided at the cable entrance.(Para-graphs 4.'H(2)a, I tern 50-316/86015-17) |
| Contrarytoparagraphs (f)and(k)of10CFR50.49andSection5.2,2.oftheDORGuidelines, theinstalled configuration ofsevenLimitorque motoroperators (fourinunit1andthreeinunit2)werenotthesameasqual-ifiedbytypetest,inthatundocumented wirewasidentified withinthelimitswitchassemblyhousings(Paragraph 4.F(6)a,Item50-315/86015-03; 50-316/86015-03).
| | Contrary to paragraphs (f)and (k)of 10 CFR 50.49 and Section 5.2.2 of the DOR Guidelines, the installed configuration of Foxboro Differential Trans-mitters, Model No.NE13-DM-H1H22, DC Cook Tag No.FFC-230 and FCC-241 was not the same as qualified by type test in that no weep hole was installed in the low point of the connecting conduit and the cable termination conduit was not sealed with silicon sealant as alternately permitted by the plant construction drawing.(Paragraph 4.H(3)a, Item 50-315/86015-21) |
| Contrarytoparagraphs (f)and(k)of1CCFR50.49andSection5.2.2.oftheDORGuidelines, theinstalled configuration ofLimitorque motoroperator, DCCookTagNo.IM0-54,locatedinsidetheunit2containment, wasnotthesameasqualified bytypetestinthat"T"drains(motorhousing)andgreasereliefvalves(gearboxhousing)hadnotbeeninstalled (Paragraph 4.!-:(1)a, Item50-316/86015-04).
| | Attachment 2 to AEP:NRC:0775AN Cable Insulation Resistances Potential Enforcement nresolved Items Item 2: Environmental Qualification of (1)Conax Electrical Penetration assemblies, (2)penetration feedthrough extension wire (Haveg Kapton insulated wire), and (3)Brand Rex Triaxial Cable, type RG 11/u had been reviewed and approved by the electrical cognizant engineer.The Cognizant engineer approval was documented in the EQ file (file¹'s 13 (5/26/78), 138 (6/30/81)). |
| Contrarytoparagraphs (f)and(k)of10CFR50.49andSection5.2.2oftheDORGuidelines, theinstalled configuration ofASCOsolenoidvalve,ModelNP-8316-54 Y,DCCookTagNo.XSO-122wasnotthesameasqualified bytypetestinthatmoisturesealswerenotprovidedatthecableentrance.
| | His review, though not explicitly stated, considered Insulation Resistance (IR)and Hi Pot tests values given in the test reports.Also considered during the review was the fact that IR values are greatly influenced by direct blasts of steam and chemical spray solution on the sample cables during the EQ test.Consistently, cable samples that pass the environmental test show greatly improved IR values during the subsequent functional test which is more closely applicable to the protected cable installations. |
| (Para-graphs4.'H(2)a,Itern50-316/86015-17) | | The Cognizant engineer is also aware that the field installation of cables is always a more protected configuration than the tested configuration. |
| Contrarytoparagraphs (f)and(k)of10CFR50.49andSection5.2.2oftheDORGuidelines, theinstalled configuration ofFoxboroDifferential Trans-mitters,ModelNo.NE13-DM-H1H22, DCCookTagNo.FFC-230andFCC-241wasnotthesameasqualified bytypetestinthatnoweepholewasinstalled inthelowpointoftheconnecting conduitandthecabletermination conduitwasnotsealedwithsiliconsealantasalternately permitted bytheplantconstruction drawing.(Paragraph 4.H(3)a,Item50-315/86015-21)
| | Specifically at Cook Plant the penetration feedthrough and extension wire are protected against direct steam and chemical spray impingement by flood up tubes (file¹61 SCEW¹1-CI-11). |
| Attachment 2toAEP:NRC:0775AN CableInsulation Resistances Potential Enforcement nresolved ItemsItem2:Environmental Qualification of(1)ConaxElectrical Penetration assemblies, (2)penetration feedthrough extension wire(HavegKaptoninsulated wire),and(3)BrandRexTriaxialCable,typeRG11/uhadbeenreviewedandapprovedbytheelectrical cognizant engineer. | | The Brand Rex triaxial cable used to supply power to the Victoreen radiation monitors (the only Brand Rex triaxial in the EQ scope)is also protected by flood up tube installation through all its routing from the containment penetration to the Victor'een instrument.(file,¹138 SCEV¹1-CI-21). |
| TheCognizant engineerapprovalwasdocumented intheEQfile(file¹'s13(5/26/78),
| | This discussion shows that the electrical installation identified in item 2 was environmentally qualified when approved as such by the cognizant electrical engineer.All the necessary documentation to show that the electrical installation was environmentally qualified was also in the EQ file and could be retrieved with the help of the EQ engineer.'In s'ummary, we believe that the technical assessment of combined worst case IR measurements, although conservative, does not meaningfully address the actual accident performance of the electrical system.Instead, the review of individual tested electrical devices is sufficient and acceptable.}} |
| 138(6/30/81)). | |
| Hisreview,thoughnotexplicitly stated,considered Insulation Resistance (IR)andHiPottestsvaluesgiveninthetestreports.Alsoconsidered duringthereviewwasthefactthatIRvaluesaregreatlyinfluenced bydirectblastsofsteamandchemicalspraysolutiononthesamplecablesduringtheEQtest.Consistently, cablesamplesthatpasstheenvironmental testshowgreatlyimprovedIRvaluesduringthesubsequent functional testwhichismorecloselyapplicable totheprotected cableinstallations.
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| TheCognizant engineerisalsoawarethatthefieldinstallation ofcablesisalwaysamoreprotected configuration thanthetestedconfiguration.
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| Specifically atCookPlantthepenetration feedthrough andextension wireareprotected againstdirectsteamandchemicalsprayimpingement byflooduptubes(file¹61SCEW¹1-CI-11). | |
| TheBrandRextriaxialcableusedtosupplypowertotheVictoreen radiation monitors(theonlyBrandRextriaxialintheEQscope)isalsoprotected byflooduptubeinstallation throughallitsroutingfromthecontainment penetration totheVictor'een instrument.
| |
| (file,¹138 SCEV¹1-CI-21). | |
| Thisdiscussion showsthattheelectrical installation identified initem2wasenvironmentally qualified whenapprovedassuchbythecognizant electrical engineer.
| |
| Allthenecessary documentation toshowthattheelectrical installation wasenvironmentally qualified wasalsointheEQfileandcouldberetrieved withthehelpoftheEQengineer.
| |
| 'Ins'ummary, webelievethatthetechnical assessment ofcombinedworstcaseIRmeasurements, althoughconservative, doesnotmeaningfully addresstheactualaccidentperformance oftheelectrical system.Instead,thereviewofindividual testedelectrical devicesissufficient andacceptable.}} | |
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List of Commitments Identified in LER Provided ML17326A0991999-08-26026 August 1999 Forwards LER 99-020-00,re EDGs Being Declared Inoperable. Commitments Made by Util Are Listed ML17326A1221999-08-23023 August 1999 Forwards Revised Page 2 to 1998 Annual Environ Operating Rept, for DC Cook Nuclear Plant,Correcting Omission to App I ML17326A0981999-08-23023 August 1999 Forwards fitness-for-duty Program Performance Data for Period of 990101-0630 for DC Cook Nuclear Plants,Units 1 & 2,per 10CFR26.71(d) ML17326A0891999-08-16016 August 1999 Forwards LER 99-019-00,re Victoreen Containment High Range Monitors Not Beign Environmentally Qualified to Withstand post-LOCA Conditions.Commitments Made by Util Are Listed ML17326A0811999-08-10010 August 1999 Notifies NRC of Changes in Commitments Made in Response to GL 98-01,supplement 1, Yr 2000 Readiness of Computer Sys Ar Npps, Dtd 990623 ML17326A0821999-08-0606 August 1999 Informs That Util Is Submitting Encl Scope & Objectives for 991026 DC Cook Nuclear Plant Emergency Plan Exercise to G Shear of NRC Plant Support Branch.Exercise Will Include Full State & County Participation ML17326A1451999-08-0404 August 1999 Requests Withholding of WCAP-15246, Control Rod Insertion Following Cold Leg Lbloca. ML17326A0751999-08-0404 August 1999 Forwards LER 98-029-01, Fuel Handling Area Ventilation Sys Inoperable Due to Original Design Deficiency. Supplemental Rept Represents Extensive Rev to Original LER & Replaces Rept in Entirely.Commitment Listed ML17326A0721999-07-29029 July 1999 Forwards LER 99-018-00 Re Refueling Water Storage Tank Suction Motor Operated Valves Inoperable,Due to Inadequate Design.Listed Commitments Were Identified in LER ML17326A0711999-07-27027 July 1999 Responds to 980123 RAI Re NRC GL 87-02, Verification of Seismic Adequacy of Mechanical & Electrical Equipment in Operating Reactors,Unresolved Safety Issue (USI) A-46. ML17326A0601999-07-22022 July 1999 Forwards UFSAR, IAW 10CFR50.71(e) & Rept of Changes,Tests & Experiments as Required by 10CFR50.59(b)(2) for DC Cook Nuclear Plant,Units 1 & 2.Without UFSAR ML17326A0631999-07-22022 July 1999 Forwards LER 98-014-03, Response to High-High Containment Pressure Procedure Not Consistent with Analysis of Record. Revised Info Marked by Sidebars in Right Hand Margin. Commitments Made by Util,Listed ML17326A0311999-07-0101 July 1999 Forwards LER 99-004-01 Re Failure to Perform TS Surveillance Analyses of Reactor Coolant Chemistry with Fuel Removed. Commitments Made by Util Are Listed ML20196K5961999-06-30030 June 1999 Ltr Contract:Task Order 40, DC Cook Extended Sys Regulatory Review Oversight Insp, Under Contract NRC-03-98-021 ML17326A0281999-06-28028 June 1999 Provides Response to 981116 & 960228 RAIs Re GL 92-01. Revised Pressurized Thermal Shock Evaluation Based on New Weld Chemistry Info & Copy of W Rept WCAP-15074, Evaluation of 1P3571 Weld Metal from Surveillance Programs... Encl ML17326A0241999-06-23023 June 1999 Responds to GL 98-01,Suppl 1, Y2K Readiness of Computer Sys at Nuclear Power Plants. Y2K Readiness Disclosure for Plant & List of Commitments Encl ML17326A0121999-06-18018 June 1999 Forwards LER 99-014-00 Re Requirement of TS 4.0.5 Not Met for Boron Injection Tank Bolting.Commitments Identified in Submittal Listed ML17326A0111999-06-11011 June 1999 Provides Response to NRC RAI Re GL 97-01, Degradation of Crdm/Cedm Nozzle & Other Vessel Closure Head Penetrations. ML17325B6281999-06-0101 June 1999 Forwards LER 99-S03-00,re Nonconforming Vital Area Barriers.Commitments Made by Util Are Listed ML17325B6401999-06-0101 June 1999 Forwards LER 99-013-00 Re Safety Injection & Centrifugal Charging Throttle Valve Cavitation During LOCA Could Lead to ECCS Pump Failure.Listed Commitments Identified in Submittal ML17325B6331999-05-28028 May 1999 Forwards LER 99-S02-00,re Vulnerability in Safeguard Sys That Could Allow Unauthorized or Undetected Access to Protected Area.Commitments Made by Util Are Listed ML17265A8201999-05-24024 May 1999 Forwards LER 98-037-01,representing Extensive Rev to Original LER & Replacing Rept in Entirety.Listed Commitments Identified in Submittal ML20207A9201999-05-21021 May 1999 Ack Receipt of 990319 Response to Notice of Violation & Proposed Imposition of Civil Penalty .On 981124, Licensee Remitted Check for Payment of Civil Penalties. Licensee Requests for Extension for Response,Granted ML17325B6111999-05-21021 May 1999 Forwards Annual Radioactive Effluent Release Rept for 980101-1231 for DC Cook Nuclear Plant,Units 1 & 2. Transmittal of Submittal Was Delayed Due to Administrative Error in Regulatory Affairs Dept ML17325B6031999-05-21021 May 1999 Provides Response to NRC GL 98-04, Potential for Degradation of ECCS & Containment Spray Sys After LOCA Because of Const & Protective Coating Deficiencies & Foreign Matl in Containment. ML17325B5971999-05-20020 May 1999 Forwards LER 99-012-00,re Auxiliary Building ESF Ventilation Sys Not Being Capable of Maintaining ESF Room Temps post-accident.Commitment,listed ML17335A5281999-05-12012 May 1999 Forwards DC Cook Nuclear Plant Fitness for Duty Program Performance Dtd for six-month Period of 980701-1231,IAW 10CFR26.71(d).Info Was Delayed Due to Administrative Error in Regulatory Affairs Dept ML17335A5271999-05-11011 May 1999 Forwards Details Re Sources & Levels of Insurance Maintained for DC Cook,Units 1 & 2,as of 990401,per 10CFR50.54(w)(3). Info Was Delayed Beyond Required Date Due to Internal Oversight ML17325B5841999-05-10010 May 1999 Forwards LER 99-002-00 Re TS 4.0.5 Requirements Not Being Met Due to Improperly Performed Test.Commitments Identified in Ler,Listed ML17325B5871999-05-0707 May 1999 Forwards Current Revs of Expanded Sys Readiness Review (Essr) Implementing Procedures,For Info Purposes to Support Current NRC Insps.Current Esrr Schedule Provided for Info Purposes,Reflecting Revised Target Dates ML17325B5791999-05-0404 May 1999 Forwards LER 99-011-00,concerning Air Sys for EDG Not Supporting Long Term Operability.Commitments Made by Util Listed ML17325B5821999-05-0404 May 1999 Provides Addl Background,Description & Clarification of Previous & Revised Commitments Re UFSAR Revalidation Effort. Commitment Change Involved Alignment of UFSAR Revalidation Program Methodology to Strategy Contained in Current Plan ML17325B5741999-05-0303 May 1999 Forwards LER 99-010-00 Re RCS Leak Detection Sys Sensitivity Not in Accoradnce with Design Requirements.Listed Commitments Identified in Submittal ML17325B5631999-04-22022 April 1999 Forwards Results of Independent Chemical Evaluations Performed from Sept 1997 Through Feb 1999,re Resolution of Issues Related to License Amend 227 ML17325B5561999-04-16016 April 1999 Forwards LER 99-006-00, Fuel Crane Loads Lifted Over SFP Could Impact Energies Greater than TS Limits, IAW 10CFR50.73.Submittal Was Delayed to Allow for Resolution of Questions.Commitment Made by Licensee,Listed ML20205P0591999-04-14014 April 1999 Ninth Partial Response to FOIA Request for Documents.App Records Already Available in Pdr.Records in App T Encl & Being Made Available in Pdr.App U Records Being Released in Part (Ref FOIA Exemption 7).App V Records Withheld Entirely ML17325B5451999-04-12012 April 1999 Forwards LER 99-009-00 Re as-found RHR Safety Relief Valve Lift Setpoint Greater than TS Limit.Commitments Identified in Submittal Listed ML17325B5301999-04-0707 April 1999 Forwards LER 99-S01-01, Vulnerability in Locking Mechanism of Four Vital Area Gates, Per 10CFR50.73.Commitments Made by Util,Listed ML17325B5241999-04-0505 April 1999 Forwards Revs 0 & 1 to Cook Nuclear Plant Restart Plan, Dtd 980307 & 0407.Rev 5 Is Current Cook Nuclear Plant Restart & Supercedes Previous Revs in All Respects ML17325B5121999-04-0101 April 1999 Forwards LER 99-007-00, Calculations Show That Divider Barrier Between Upper & Lower Containment Vols May Be Overstressed. Commitments Made by Util Are Listed 1999-09-30
[Table view] Category:INCOMING CORRESPONDENCE
MONTHYEARML17335A5511999-10-0707 October 1999 Forwards LER 99-023-00, Inadequate TS Surveillance Testing of ESW Pump ESF Response Time. Commitments Identified in LER Listed ML20217D9361999-09-30030 September 1999 FOIA Request for Document Re Section 9.7 of SE by Directorate of Licensing,Us Ae Commission in Matter of Indiana & Michigan Electric Co & Indiana & Michigan Power Co,Dc Cook Nuclear Plan,Units 1 & 2 ML17326A1541999-09-20020 September 1999 Provides Notification of Change in Senior Licensed Operator Status.Operating Licenses for CR Smith,License SOP-30159-4 & Tw Welch,License SOP-30654-2 Are No Longer Required & Should Be Withdrawn ML17326A1261999-09-17017 September 1999 Forwards LER 99-022-00 Re Electrical Bus Degraded Voltage Setpoints Too Low for Safety Related Loads.Listed Commitment Identified in Submittal ML17326A1441999-09-17017 September 1999 Submits Trace on Second Shipment of Two Plant,Unit 2 Steam Generators.Info Re Shipment Submitted ML17326A1531999-09-16016 September 1999 Submits Info Pertaining to Plant Proposed Operator Licensing Exam Requirements Through Yr 2003.NRC Form 536, Operator Licensing Exam Data, Which Provides Required Info Encl ML17326A1101999-08-27027 August 1999 Forwards LER 99-021-00, GL 96-01 Test Requirements Not Met in Surveillance Tests. List of Commitments Identified in LER Provided ML17326A0991999-08-26026 August 1999 Forwards LER 99-020-00,re EDGs Being Declared Inoperable. Commitments Made by Util Are Listed ML17326A1221999-08-23023 August 1999 Forwards Revised Page 2 to 1998 Annual Environ Operating Rept, for DC Cook Nuclear Plant,Correcting Omission to App I ML17326A0981999-08-23023 August 1999 Forwards fitness-for-duty Program Performance Data for Period of 990101-0630 for DC Cook Nuclear Plants,Units 1 & 2,per 10CFR26.71(d) ML17326A0891999-08-16016 August 1999 Forwards LER 99-019-00,re Victoreen Containment High Range Monitors Not Beign Environmentally Qualified to Withstand post-LOCA Conditions.Commitments Made by Util Are Listed ML17326A0811999-08-10010 August 1999 Notifies NRC of Changes in Commitments Made in Response to GL 98-01,supplement 1, Yr 2000 Readiness of Computer Sys Ar Npps, Dtd 990623 ML17326A0821999-08-0606 August 1999 Informs That Util Is Submitting Encl Scope & Objectives for 991026 DC Cook Nuclear Plant Emergency Plan Exercise to G Shear of NRC Plant Support Branch.Exercise Will Include Full State & County Participation ML17326A1451999-08-0404 August 1999 Requests Withholding of WCAP-15246, Control Rod Insertion Following Cold Leg Lbloca. ML17326A0751999-08-0404 August 1999 Forwards LER 98-029-01, Fuel Handling Area Ventilation Sys Inoperable Due to Original Design Deficiency. Supplemental Rept Represents Extensive Rev to Original LER & Replaces Rept in Entirely.Commitment Listed ML17326A0721999-07-29029 July 1999 Forwards LER 99-018-00 Re Refueling Water Storage Tank Suction Motor Operated Valves Inoperable,Due to Inadequate Design.Listed Commitments Were Identified in LER ML17326A0711999-07-27027 July 1999 Responds to 980123 RAI Re NRC GL 87-02, Verification of Seismic Adequacy of Mechanical & Electrical Equipment in Operating Reactors,Unresolved Safety Issue (USI) A-46. ML17326A0601999-07-22022 July 1999 Forwards UFSAR, IAW 10CFR50.71(e) & Rept of Changes,Tests & Experiments as Required by 10CFR50.59(b)(2) for DC Cook Nuclear Plant,Units 1 & 2.Without UFSAR ML17326A0631999-07-22022 July 1999 Forwards LER 98-014-03, Response to High-High Containment Pressure Procedure Not Consistent with Analysis of Record. Revised Info Marked by Sidebars in Right Hand Margin. Commitments Made by Util,Listed ML17326A0311999-07-0101 July 1999 Forwards LER 99-004-01 Re Failure to Perform TS Surveillance Analyses of Reactor Coolant Chemistry with Fuel Removed. Commitments Made by Util Are Listed ML17326A0281999-06-28028 June 1999 Provides Response to 981116 & 960228 RAIs Re GL 92-01. Revised Pressurized Thermal Shock Evaluation Based on New Weld Chemistry Info & Copy of W Rept WCAP-15074, Evaluation of 1P3571 Weld Metal from Surveillance Programs... Encl ML17326A0241999-06-23023 June 1999 Responds to GL 98-01,Suppl 1, Y2K Readiness of Computer Sys at Nuclear Power Plants. Y2K Readiness Disclosure for Plant & List of Commitments Encl ML17326A0121999-06-18018 June 1999 Forwards LER 99-014-00 Re Requirement of TS 4.0.5 Not Met for Boron Injection Tank Bolting.Commitments Identified in Submittal Listed ML17326A0111999-06-11011 June 1999 Provides Response to NRC RAI Re GL 97-01, Degradation of Crdm/Cedm Nozzle & Other Vessel Closure Head Penetrations. ML17325B6401999-06-0101 June 1999 Forwards LER 99-013-00 Re Safety Injection & Centrifugal Charging Throttle Valve Cavitation During LOCA Could Lead to ECCS Pump Failure.Listed Commitments Identified in Submittal ML17325B6281999-06-0101 June 1999 Forwards LER 99-S03-00,re Nonconforming Vital Area Barriers.Commitments Made by Util Are Listed ML17325B6331999-05-28028 May 1999 Forwards LER 99-S02-00,re Vulnerability in Safeguard Sys That Could Allow Unauthorized or Undetected Access to Protected Area.Commitments Made by Util Are Listed ML17265A8201999-05-24024 May 1999 Forwards LER 98-037-01,representing Extensive Rev to Original LER & Replacing Rept in Entirety.Listed Commitments Identified in Submittal ML17325B6111999-05-21021 May 1999 Forwards Annual Radioactive Effluent Release Rept for 980101-1231 for DC Cook Nuclear Plant,Units 1 & 2. Transmittal of Submittal Was Delayed Due to Administrative Error in Regulatory Affairs Dept ML17325B6031999-05-21021 May 1999 Provides Response to NRC GL 98-04, Potential for Degradation of ECCS & Containment Spray Sys After LOCA Because of Const & Protective Coating Deficiencies & Foreign Matl in Containment. ML17325B5971999-05-20020 May 1999 Forwards LER 99-012-00,re Auxiliary Building ESF Ventilation Sys Not Being Capable of Maintaining ESF Room Temps post-accident.Commitment,listed ML17335A5281999-05-12012 May 1999 Forwards DC Cook Nuclear Plant Fitness for Duty Program Performance Dtd for six-month Period of 980701-1231,IAW 10CFR26.71(d).Info Was Delayed Due to Administrative Error in Regulatory Affairs Dept ML17335A5271999-05-11011 May 1999 Forwards Details Re Sources & Levels of Insurance Maintained for DC Cook,Units 1 & 2,as of 990401,per 10CFR50.54(w)(3). Info Was Delayed Beyond Required Date Due to Internal Oversight ML17325B5841999-05-10010 May 1999 Forwards LER 99-002-00 Re TS 4.0.5 Requirements Not Being Met Due to Improperly Performed Test.Commitments Identified in Ler,Listed ML17325B5871999-05-0707 May 1999 Forwards Current Revs of Expanded Sys Readiness Review (Essr) Implementing Procedures,For Info Purposes to Support Current NRC Insps.Current Esrr Schedule Provided for Info Purposes,Reflecting Revised Target Dates ML17325B5821999-05-0404 May 1999 Provides Addl Background,Description & Clarification of Previous & Revised Commitments Re UFSAR Revalidation Effort. Commitment Change Involved Alignment of UFSAR Revalidation Program Methodology to Strategy Contained in Current Plan ML17325B5791999-05-0404 May 1999 Forwards LER 99-011-00,concerning Air Sys for EDG Not Supporting Long Term Operability.Commitments Made by Util Listed ML17325B5741999-05-0303 May 1999 Forwards LER 99-010-00 Re RCS Leak Detection Sys Sensitivity Not in Accoradnce with Design Requirements.Listed Commitments Identified in Submittal ML17325B5631999-04-22022 April 1999 Forwards Results of Independent Chemical Evaluations Performed from Sept 1997 Through Feb 1999,re Resolution of Issues Related to License Amend 227 ML17325B5561999-04-16016 April 1999 Forwards LER 99-006-00, Fuel Crane Loads Lifted Over SFP Could Impact Energies Greater than TS Limits, IAW 10CFR50.73.Submittal Was Delayed to Allow for Resolution of Questions.Commitment Made by Licensee,Listed ML17325B5451999-04-12012 April 1999 Forwards LER 99-009-00 Re as-found RHR Safety Relief Valve Lift Setpoint Greater than TS Limit.Commitments Identified in Submittal Listed ML17325B5301999-04-0707 April 1999 Forwards LER 99-S01-01, Vulnerability in Locking Mechanism of Four Vital Area Gates, Per 10CFR50.73.Commitments Made by Util,Listed ML17325B5241999-04-0505 April 1999 Forwards Revs 0 & 1 to Cook Nuclear Plant Restart Plan, Dtd 980307 & 0407.Rev 5 Is Current Cook Nuclear Plant Restart & Supercedes Previous Revs in All Respects ML17325B5121999-04-0101 April 1999 Forwards LER 99-007-00, Calculations Show That Divider Barrier Between Upper & Lower Containment Vols May Be Overstressed. Commitments Made by Util Are Listed ML17325B5141999-03-30030 March 1999 Forwards Rept on Status of Decommissioning Funding.Attached Rept Includes Amount of Decommissioning Funds Estimated to Be Required Pursuant to 10CFR50.75(b) & (C) ML17325B5191999-03-29029 March 1999 Forwards LER 99-001-00,re Degraded Component Cw Flow to Containment Main Steam Line Penetrations.Commitment, Listed ML20204F6401999-03-19019 March 1999 Responds to NRC 981013 NOV & Proposed Imposition of Civil Penalty.Violations Cited in Subject NOV Were Initially Identified in Referenced Five Insp Repts.Corrective Actions: Ice Condensers Have Been Completely Thawed of Any Blockage ML17325B4751999-03-18018 March 1999 Forwards LER 99-004-00,re Failure to Perform TS Surveillance Analyses of Reactor Coolant Chemistry with Fuel Removed. Commitment Made by Util,Listed ML17325B4721999-03-18018 March 1999 Forwards LER 99-005-00,re Reactor Trip Breaker Manual Actuations During Rod Drop Testing Not Previously Reported. Listed Commitments Identified in Submittal ML17325B4641999-03-17017 March 1999 Withdraws Response to Issue 1 of NRC Cal,Dtd 970919. Comprehensive Design Review Effort in Progress to Validate Resolution of Issue for Future Operation 1999-09-30
[Table view] Category:UTILITY TO NRC
MONTHYEARML17328A4481990-09-21021 September 1990 Requests Withdrawal of Mode 6 Proposed Tech Spec Change Since Issue Currently Being Addressed by New STSs ML17328A4331990-08-27027 August 1990 Informs of Preliminary Assessment of 900713 Electrical Contact Accident at Facility.Investigation Concludes That No Safety Rules Violated ML17328A4001990-08-24024 August 1990 Responds to 900725 Ltr Re Commitments Made in Response to Generic Ltr 88-14 on Instrument Air Supply Problems Affecting safety-related Equipment.Simulator Training to Be Provided as Stated ML17334B3781990-08-24024 August 1990 Forwards Info to Certify Plant Simulator Facility.Results of Evaluation of Dual Unit Simulation Facilities Demonstrate That Plant Simulator Performance Compares Favorably W/Units ML17328A4231990-08-21021 August 1990 Forwards Under Separate Cover,Semiannual Radioactive Effluent Release Rept for Jan-June 1990 ML17328A3901990-08-17017 August 1990 Responds to NRC 900720 Ltr Re Violations Noted in Onsite Audit of Spds.Corrective Actions:Apparent Disparity in Selection of Reactor Trip & Sys Capacity or Anticipatory Values Rectified ML17328A3891990-08-15015 August 1990 Forwards Performance Data Sheets for Plant fitness-for-duty Program for Period Jan-June 1990,per 10CFR26.Encl Includes Statistics on Various Categories of Testing,Substances Tested for & cut-off Levels Used ML17328A3571990-08-0202 August 1990 Responds to Open Items in Safety Evaluation of Util Response to Unresolved Issues on post-fire Safe Shutdown Methodology. Open Items 1 & 21 Will Be Closed by Implementing Plant Procedures Providing Equivalent Degree of Protection ML17328A3431990-07-23023 July 1990 Requests Withdrawal of 890830 Proposed Tech Spec Changes Re Sections 3.0 & 4.0.Util Will Resubmit Generic Ltr 87-09 Recommended Improvement Items on Case by Case Basis ML17328A3421990-07-23023 July 1990 Provides Results of Offsite Dose Calculation for Reactor Coolant Pump Locked Rotor Event for Facility Cycle 8.Util Identified Previously Issued SERs Addressing Short Term Containment Analysis & LOCA Containment Integrity ML20055G7551990-07-18018 July 1990 Responds to NRC Re Violations Noted in Insp Repts 50-315/90-10 & 50-316/90-10.Corrective Actions:Required Review Performed & Updated Procedure 12 Mhp 5021.019.001 Revised & Issued ML17328A3191990-07-12012 July 1990 Responds to NRC 900601 Ltr Re Violations Noted in Insp Repts 50-315/89-31 & 50-316/89-31.Corrective Actions:Electrical Testing Techniques Improved & Surveillance Procedures for Feedwater Pumps Will Be Rewritten ML17328A3181990-07-0909 July 1990 Responds to Generic Ltr 90-03,Suppl 1, Relaxation of Staff Position in Generic Ltr 83-28,Item 2.2,Part 2, 'Vendor Interface for Safety-Related Components.' Licensee Will Contact safety-related Vendors on Annual Basis ML17328A3111990-07-0303 July 1990 Provides Certification of Funding Plan for Decommissioning of Plant,Per 10CFR50.33 & 50.75 ML17328A2961990-06-25025 June 1990 Forwards Response to Generic Ltr 90-04 Re Closeout of Generic Safety Issues.Util Supports Concern & Desire to Close long-standing Generic Safety Issues ML17328A2921990-06-22022 June 1990 Forwards WCAP-12483, Analysis of Capsule U from American Electric Power Co DC Cook Unit 1 Reactor Vessel Radiation Surveillance Program. ML20044A3521990-06-22022 June 1990 Submits Info Re Sensitivity Study Performed on Number of Fuel Axial Intervals,Per Topical Rept, American Electric Power Reactor Core Thermal-Hydraulic Analysis Using Cobra III-C/MIT-2 Computer Code. ML17328A2821990-06-15015 June 1990 Submits Ltr Re Proposed Control Room Habitability Tech Spec Changes & Supporting Analyses,Per 900521 Discussion.Revised Calculations of Control Room Thyroid Doses Will Be Submitted within 60 Days of Receipt of Proposed Generic Ltr ML17328A2741990-06-12012 June 1990 Submits Followup,Per 900205 & 0308 Ltrs & Provides Update Re Inoperable Fire Barrier.Fire Seal Repaired & Restored to Operability on 900419 ML17328A2551990-06-0505 June 1990 Forwards Addl Info Re Util 900126 Revised Response to NRC Bulletin 88-002,per NRC 900509 Request ML17328A7361990-06-0101 June 1990 Forwards Addl Info Re 890825 & 1212 Applications for Amends to Licenses DPR-58 & DPR-74,per Request.Amends Make Changes to Administrative Controls ML17328A7331990-05-29029 May 1990 Forwards Nonproprietary WCAP-12577 & Proprietary WCAP-12576, Westinghouse Revised Thermal Design Procedure Instrument... Methodology for American Electric Power DC Cook Unit 2 Nuclear Power Station, Per 900419 Commitment ML17328A7321990-05-24024 May 1990 Responds to NRC Bulletin 90-001, Loss of Fill Oil in Transmitters Mfg by Rosemount. No Rosemount Model 1153 Series B or D or Model 1154 Transmitters Installed at Facility.Transmitters Purchased as commercial-grade Units ML17328A6991990-05-0909 May 1990 Provides Suppl to 900103 Response,Certifying That Fitness for Duty Program Implemented at Plant.Change Also Clarifies When More Stringent cut-off Levels Adopted at Plant Program Apply ML17328A7001990-05-0909 May 1990 Responds to NRC 900406 Ltr Re Inadequacies of Spds,Per Audit on 900221-22.Corrective Actions:Software Mod Will Prevent User from Accessing Displays Other than Iconic Displays from SPDS Dedicated Terminal ML17328A7071990-05-0707 May 1990 Forwards Monthly Operating Rept for Apr 1990 & Corrected Rept Mar 1990 for Donald C Cook Nuclear Plant Unit 1 ML17328A7031990-05-0707 May 1990 Forwards Monthly Operating Rept for Apr 1990 & Corrected Rept for Mar 1990 for DC Cook Nuclear Plant Unit 2 ML17328A6951990-04-30030 April 1990 Certifies That Training Programs for Initial Licensing & Requalification Training of Operators & Senior Operators at Plant Accredited by Inpo,Per Generic Ltr 87-07 ML17328A6861990-04-30030 April 1990 Forwards Annual Environ Operating Rept,Jan-Dec 1989, & DC Cook Nuclear Plant Units 1 & 2 Operational Radiological Environ Monitoring Program 1989 Rept Jan-Dec 1989. ML17328A6801990-04-23023 April 1990 Responds to NRC Bulletin 88-004, Potential Safety-Related Pump Loss. Study Planned to Evaluate Alternative Actions to Be Taken for Protecting RHR Pumps ML17328A6771990-04-23023 April 1990 Forwards DC Cook Nuclear Plant 1990 Annual Emergency Preparedness Exercise. Exercise Scope & Objectives & Detailed Scenario Documentation Encl ML17334B3641990-04-11011 April 1990 Responds to NRC 900301 Ltr Re Violations Noted in Insp Repts 50-315/89-31 & 50-316/89-31.Corrective Actions:Reliability Centered Maint Program Initiated ML17328A6601990-04-11011 April 1990 Forwards Updated QA Program Description for Cook Nuclear Plant, Incorporating Editorial,Organizational & Position Title Changes ML17328A6551990-04-0909 April 1990 Responds to NRC 900309 Ltr Re Violations Noted in Insp Rept 50-316/90-08.Corrective Actions:Procedure for Steam Generator Stop Valve Operability Test Revised to Require That MSIV Be Declared Inoperable After Failing Stroke Test ML17334B3601990-04-0606 April 1990 Forwards Revised Figures for Loss of Load Event Previously Submitted in Attachment 4,App B of Vantage 5 Reload Transition Safety Rept Supplied by Westinghouse in Jan 1990. Update Is Editorial in Nature ML17334B3621990-04-0606 April 1990 Forwards 1989 Annual Rept & Projected Cash Flow ML17328A6341990-03-30030 March 1990 Forwards Application for Renewal of Plant NPDES Permit,For Info,Per Section 3.2 of App B to Plant Tech Specs.W/O Encl ML17328A6331990-03-30030 March 1990 Responds to NUMARC 900104 Request for Addl Info Re Station Blackout Submittals.Target Reliability for Emergency Diesel Generator of 0.0975 Established for 4 H ac-independent Coping Category Will Be Maintained ML17328A6321990-03-30030 March 1990 Forwards Response to Generic Ltr 90-01, NRC Regulatory Impact Survey. Util Ack Recommendation by NUMARC ML17328A6221990-03-27027 March 1990 Responds to 900226 Ltr Transmitting Notice of Violation & Proposed Imposition of Civil Penalty in Amount of $75,000. Corrective Actions:Flow Retention Circuitry Setpoints Set to Compensate for Missized Process Flow Orifice ML17328A6191990-03-27027 March 1990 Forwards Payment in Amount of $75,000 for Civil Penalty Imposed Through Notice of Violation Issued in Insp Rept 50-316/89-02 on 891016-20,24-26 & 1204.Response to Violation & Corrective Actions Provided in Separate Submittal ML17328A6161990-03-20020 March 1990 Responds to Generic Ltr 89-19 Re Safety Implications of Control Sys in LWRs (USI A-47).Both Units Have Steam Overfill Protection Sys That Would Automatically Prevent Water Carryover Into Steam Lines If Control Sys Failed ML17328A6121990-03-13013 March 1990 Forwards Monthly Performance Monitoring Rept,Jan 1990. ML17325B3901990-03-0606 March 1990 Forwards Annual Rept to NRC Per 10CFR50.54(W)(2) Re Nuclear Property Insurance ML17325B3921990-03-0606 March 1990 Modifies Application for Amend to License DPR-74 Re Cycle 8, Per 900228 Telcon ML17325B3781990-02-28028 February 1990 Forwards Response to NRC Info Notice 89-056 Re Questionable Certification of Matl Supplied to Dod by Nuclear Suppliers. Matl Capable of Performing Design Function & Acceptable for Continued Use ML17328A5971990-02-27027 February 1990 Withdraws 890203 Application for Amend to License DPR-74, Modifying Tech Spec Table 3.2-1 Re DNB Parameters to Express RCS Flow Rate on Volumetric Rather than Mass Basis ML17334B3511990-02-22022 February 1990 Submits Annual Rept of Changes to or Errors in Acceptable LOCA Evaluation Models or Application of Models for Plants. Wflash Analyses Will Be Superceded by Notrump Analyses for Unit 2,Cycle 8 Reload ML17328A5881990-02-21021 February 1990 Responds to NRC 890914 Request for Addl Info Re Safe Shutdown Methodology.App R Fire Barriers Being Maintained & Surveilled Under 3/4.7.10 for Units 1 & 2 ML17328A5861990-02-16016 February 1990 Provides Revised Comments in Response to NRR Comments During 891213 Telcon Re Allowable Stresses for Piping & Piping Supports 1990-09-21
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AC CELEBRATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)ACCESSION NBR:8807070374 DOC.DATE: 88/06/24 NOTARIZED:
NO DOCKET FACIL:50-315 Donald C.Cook Nuclear Power Plant, Unit 1, Indiana 6 05000315 50-316 Donald C.Cook Nuclear Power Plant, Unit 2, Indiana&05000316 AUTH.NAME AUTHOR AFFILIATION ALEXICH,M.P.
Indiana Michigan Power Co.RECIP.NAME RECIPIENT AFFILIATION DAVIS,A.B.
Document Control Branch (Document Control Desk)
SUBJECT:
Forwards addi info re potential enforcement items noted during environ qualification audit on 860421-30.
DISTRIBUTION CODE: IE01D COPIES RECEIVED:LTR
]ENCL L SIZE: TITLE: General (50 Dkt)-Insp Rept/Notice of VioTation Response NOTES: D S RECIPIENT ID CODE/NAME PD3-1 PD INTERNAL: AEOD NRR MORISSEAU,D NRR/DLPQ/QAB 10 NRR/DREP/EPB 10 NRR/DRIS DIR 9A NUDOCS-ABSTRACT OGC 15-B-18 RES/DRPS DEPY EXTERNAL: LPDR NSIC COPIES LTTR ENCL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 RECIPIENT ID CODE/NAME STANG,J DEDRO NRR/DLPQ/PEB 11 NRR/DOEA DIR 11 NRR/DREP/RPB 10 NRR/PMAS/ILRB12 OE L~ERMAN,J~~ILE 02 RGN3 LE 01 NRC PDR COPIES LTTR ENCL 2 2 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 1 1 J'D D S TOTAL NUMBER OF COPIES REQUIRED: LTTR 23 ENCL 23 Power Company p0 Box f6631 Coiumous.OH 43'~fHllMNA MfCHfQAN fIOWI'R AEP:NRC:0775AN Donald C.Cook Nuclear Plant Units 1 and 2 Docket Nos.50-315 and 50-316 License Nos.DPR-58 and DPR-74 DONALD C.COOK NUCLEAR PLANT ENVIRONMENTAL QUALIFICATION INSPECTION
-ADDITIONAL INFORMATION U.S.Nuclear Regulatory Commission Attn: Document Control Desk Washington, D.C.20555 Attn: A, B.Davis June 24, 1988
Dear Mr.Davis:
In response to a request from your staff, we are providing additional information regarding potential enforcement items identified during the Donald C.Cook Nuclear Plant Environmental Qualification Audit conducted during the period April 21-30, 1986 (Inspection Report Nos, 50-315/86015; 50-316/&6015 Attachment 1).Also included is information about two recently discovered conditions involving the mixing, of, greases in Limitorque motor operators and undocumented materials found in Limitorque motor operators.
Some of the enclosed material has been previously provided in our submittal AEP:NRC:0775AE,"Equipment Environmental Qualification Audit," dated May 29, 1986.Inspection report Item 1 stated that the Environmental Qualification files were not auditable, in that the records were not readily retrievable.
Although we believed that the files were auditable at the time of the inspection, we recognize that independent use of the files did require some indoctrination to the filing system that existed at the time.We have made enhancements to the filing system and now believe that it can be used by an outside auditor with minimal assistance from AEPSC personnel.
The following steps have been taken to enhance our EQ file;1.Establishment of a Master EQ Computer Data Base.8807070374 880624 F'DR ADOCK 05000315 PDC Mr.A.B.Davis-2-AEP'NRC'0775AN 2.A change was made to the System Component Evaluation Work (SCEW)Sheet Packages to reference specific file locations for the documentation of Specified and Qualified parameters.
Also, a brief description of the referenced document has been included.3.SCEW sheet packets now include specific primary and supplementary references, and the applicable article in the Surveillance/Maintenance/Replacement (S/M/R)program.The packet also states the level of qualification (DOR Guidelines or NUREG 0588, Category I)and contains a positive statement of the environmental qualification of the sub]ect device.Inspection report Item 2, qualification of Conax electrical penetrations, Haveg Kapton insulated penetration feedthrough and pigtail extension wire, and Brand Rex triaxial cable, is addressed in Attachment 2.This attachment also contains relevant pages from the Brand Rex test report which were also requested.
S It is our understanding that inspection report Item 3 is no longer an issue.Inspection report Item 4, lack of a T-drain in IM0-54, is addressed in Attachment 3.After review, it was determined that environmental qualification of this valve is not required.Inspection report Item 5, ZSO-122.configuration, concerns a containment ventilation isolation valve located inside containment.
It is required to operate for 5 seconds following an accident.It is a fail-closed valve, and its electrical installation does not need to be environmentally qualified.
Inadvertent energizing of the circuitry is prevented by the"Double Break" philosophy used for these circuits.Solenoid coil failure as a result of moisture intrusion will also cause the solenoid valve to fail safe.This was addressed in our previous submittal and reviewed and closed during a followup inspection conducted August 25-28 and September 29 and 30, 1986 (50-315/86033(DRS);
50-316/86033(DRS)).
Inspection report Item 6, Foxboro differential transmitter configuration, was addressed in our previous submittal, and is included here as Attachment 4.This was reviewed and closed during the previously noted followup inspection.
Mr.A.B.Davis-3-AEP:NRC:0775AN Additional Items In addition to the preceding items, untested torque switch materials were found in Limitorque motor operators used in the Cook Nuclear Plant.The details are provided in a report submitted by Ind'ana Michigan Power Company under the provisions of 10 CFR 21 (Attachment 5).Following the discovery, a plan for corrective action has been established and implementation is in progress.Also justifications for continued operation were prepared and provided to the NRC for review.A final item concerns contaminated greases found in the limit switch compartment of valve operators supplied by Limitorque.
The valve operators were delivered and installed in Cook Nuclear Plant Unit 1'after November 30, 1985.~While disassembling the operators which were to be installed in Unit 2, a small amount of a grease (Mobilgrease 28)different from the bulk grease (Exxon Beacon 325)was discovered.
It was determined that the contamination occurred at the vendor's test facility.Since the Unit 1 motor operators were not disassembled prior to installation, it is not known whether their limit switch compartments also contain a small amount of Mobilgrease 28.However, the Unit 1 and 2 operators were delivered at.the same time.The subsequent investigation included calls to Limitorque Corporation, Mobil Corporation and Mr.R.Bolt, an independent consultant.
Based on these conversations, we have concluded that the amount of Mobilgrease 28 found in the actuator limit switch compartment does not affect the operation of the limit switches and the environmental qualification of the actuators was not compromised.
Replacement of the torque switches (Units 1 and 2)and regreasing of the limit switch compartments (Unit 1)is to be done during the current Unit 2 outage and during the next Unit 1 refueling outage which is currently anticipated to occur in March 1989, Mr.A.B.Davis-4-AKP:NRC:0775AN This document has been prepared following Corporate procedures which incorporate a reasonable set of controls to ensure its accuracy and completeness prior to signature by the undersigned.
Sincerely, M..Ale ich Vice President MPA/eh Attachments cc: D.H.Williams, Jr.W.G.Smith, Jr.-Bridgman R.CD Callen G.Bruchmann G.Charnoff NRC Resident Inspector-Bridgman A.B.Davis-Region II1 Attachment 1 to AEP:NRC:0775AN Inspection Report 50-315/86015; 50-316/86015 Appendix A-Potential Enforcement/Unresolved Items Appendix A Potential Enforcement/Unresolved Items As a result of the special equipment qualification inspection of April 21-25, and 29-30, 1986, the following items have been referred to NRC Region III as Potential Enforcement/Unresolved Items (paragraph references are to detailed portions of the inspection report).Contrary to paragraph (j)of 10 CFR 50.49, the American Electric Power 5 C (AEPSC)EQ d i fGal" ch extent that the organization of documentation was not rea y un erstand-able and traceable to permi t independent verification of conclusions (Para-graph 4,F(1), Item 50-315/86015-01; 50-316/86015-01).
2.3.4, 6.Contrary to paragraphs (f)and (k)of 10 CFR 50.49, and Se'ction 5.2.5 of the DOR Guidelines, the Eg files for (1)Conax electrical penetration assem-blies (600 volt and below), model 2325-8386-01 through 11 and 15;(2)Haveg Kapton insulated penetration feedthrough and pigtail extension wire;and (3)Brand Rex triaxial cable, type RG 11/U, did not adequately demonstrate qualification because of failure to show that the equipment functional per-formance requirements were satisfied.
No analyses were found which address how measured parameters taken during the type test (IR readings as an exam-ple)would affect plant circuits, when used in units 1 and 2 (Paragraphs 4.F(2), 4.F(3), 4.F(4), Item 50-315/86015-02; 50-316/86015-02).
Contrary to paragraphs (f)and (k)of 10 CFR 50.49 and Section 5.2,2.of the DOR Guidelines, the installed configuration of seven Limitorque motor operators (four in uni t 1 and three in uni t 2)were not the same as qual-ified by type test, in that undocumented wire was identified within the limit switch assembly housings (Paragraph 4.F(6)a, Item 50-315/86015-03; 50-316/86015-03).
Contrary to paragraphs (f)and (k)of 1C CFR 50.49 and Section 5.2.2.of the DOR Guidelines, the installed configuration of Limitorque motor operator, DC Cook Tag No.IM0-54, located inside the unit 2 containment, was not the same as qualified by type test in that"T" drains (motor housing)and grease relief valves (gearbox housing)had not been installed (Paragraph 4.!-:(1)a, Item 50-316/86015-04).
Contrary to paragraphs (f)and (k)of 10 CFR 50.49 and Section 5.2.2 of the DOR Guidelines, the installed configuration of ASCO solenoid valve, Model NP-8316-54 Y, DC Cook Tag No.XSO-122 was not the same as qualified by type test in that moisture seals were not provided at the cable entrance.(Para-graphs 4.'H(2)a, I tern 50-316/86015-17)
Contrary to paragraphs (f)and (k)of 10 CFR 50.49 and Section 5.2.2 of the DOR Guidelines, the installed configuration of Foxboro Differential Trans-mitters, Model No.NE13-DM-H1H22, DC Cook Tag No.FFC-230 and FCC-241 was not the same as qualified by type test in that no weep hole was installed in the low point of the connecting conduit and the cable termination conduit was not sealed with silicon sealant as alternately permitted by the plant construction drawing.(Paragraph 4.H(3)a, Item 50-315/86015-21)
Attachment 2 to AEP:NRC:0775AN Cable Insulation Resistances Potential Enforcement nresolved Items Item 2: Environmental Qualification of (1)Conax Electrical Penetration assemblies, (2)penetration feedthrough extension wire (Haveg Kapton insulated wire), and (3)Brand Rex Triaxial Cable, type RG 11/u had been reviewed and approved by the electrical cognizant engineer.The Cognizant engineer approval was documented in the EQ file (file¹'s 13 (5/26/78), 138 (6/30/81)).
His review, though not explicitly stated, considered Insulation Resistance (IR)and Hi Pot tests values given in the test reports.Also considered during the review was the fact that IR values are greatly influenced by direct blasts of steam and chemical spray solution on the sample cables during the EQ test.Consistently, cable samples that pass the environmental test show greatly improved IR values during the subsequent functional test which is more closely applicable to the protected cable installations.
The Cognizant engineer is also aware that the field installation of cables is always a more protected configuration than the tested configuration.
Specifically at Cook Plant the penetration feedthrough and extension wire are protected against direct steam and chemical spray impingement by flood up tubes (file¹61 SCEW¹1-CI-11).
The Brand Rex triaxial cable used to supply power to the Victoreen radiation monitors (the only Brand Rex triaxial in the EQ scope)is also protected by flood up tube installation through all its routing from the containment penetration to the Victor'een instrument.(file,¹138 SCEV¹1-CI-21).
This discussion shows that the electrical installation identified in item 2 was environmentally qualified when approved as such by the cognizant electrical engineer.All the necessary documentation to show that the electrical installation was environmentally qualified was also in the EQ file and could be retrieved with the help of the EQ engineer.'In s'ummary, we believe that the technical assessment of combined worst case IR measurements, although conservative, does not meaningfully address the actual accident performance of the electrical system.Instead, the review of individual tested electrical devices is sufficient and acceptable.