Use and Control HEPA Filtration and Vacuum Equipment NISP ... · Use and Control HEPA Filtration and Vacuum Equipment NISP-RP-08 Revision: 0.0 ... 3.2.12 Power up the unit and observe

UseandControlHEPAFiltrationandVacuumEquipment

NISP-RP-08

Revision:0.0 EffectiveDate:07-07-2017 Thisisanindustrydocumentforstandardizingradiationprotectionprocessesusedbysupplementalradiationprotectiontechnicians.Standardprocessesandrequirementsareestablishedtoeliminatesite-specificradiationprotectiontrainingforsupplementalradiationprotectiontechniciansandsupervisors.TheInstituteforNuclearPowerOperations(INPO)maintainscurrentproceduresforstandardprocessesontheINPOwebsiteandhasapprovalauthorityforrevisions.INPOapprovalauthorityisgrantedbytheindustrycontingentonastructuredreviewandapprovalprocessbyrepresentativesofutilityradiationprotectionorganizations.

NUCLEARINDUSTRYSTANDARDPROCESS

RadiologicalProtection

NuclearIndustryStandardProcessUseofHEPAFiltrationEquipment

Document#:NISP-RP-08

Revision:0.0

EffectiveDate:07-07-2017

TableofContents

1.0 Introduction..............................................................................................................1

1.1 Purpose..................................................................................................................1

1.2 ScopeandApplicability..........................................................................................1

2.0 GeneralRequirements..............................................................................................1

3.0 ProcessInstruction……………………………………………………………………………………………..…2

3.1 SelectionofHEPAEquipment……………………………………………………………………………….2

3.2HEPASetup…………………………………………………………………………………………………………..3

3.3MonitoringofHEPAOperation………………………………………………………………………………4

3.4StorageofHEPAEquipment…………………………………………………………………………………..5

4.0ClarifyingNotes……………………………………………………………………………………………………….5

5.0References………………………………………………………………………………………………………………5

Attachment1-CaptureVelocityChart………………………………………………………………………….6

Attachment2-EffectiveCaptureVelocityandDistance………………………………………………..8

Attachment3-HEPAIssue/ReturnLog-Sample.…………………………………………………………11

Attachment4-HEPAShift/DailyInspectionLog-Sample……………………………………………..12

Attachment5-WorkerInstructionsforVacuumOperations………………………………………13



Revision:0.0


Page1of13

1.0 Introduction

1.1 PurposeThisprocedureprovidesinstructionsfortheselection,operationandmonitoringofHEPAventilationandvacuumequipmentusedforradiologicalprotection.

1.2 ScopeandApplicabilityThisproceduredoesnotapplytoHEPAventilationorvacuumunitsusedforotherindustrialhazardssuchaslead/asbestosabatement.Documentationwillbecompletedusingsitespecificforms,electronicprocesses,ortheattachmentstothisprocedure.

ThisprocedureisapplicabletoUSmemberutilitieswiththeInstituteofNuclearPowerOperations(INPO).Memberutilitiesareexpectedtousethisstandardtoenablesupplementalworkerstotransitionbetweennuclearpowerplantswithminimalsite-specifictraining.Compliancewiththeseinstructionsisexpectedwithoutadditionalsiterequirementsorprocessdeviationsbeingimposedthatmayrequireadditionaltrainingorchallengetheperformanceofsupplementalworkers.

Thisprocedurewillbeusedtotrainandinstructsupplementalradiologicalprotectiontechnicians.MemberutilitieswillimplementtheseprocessrequirementsinsiteproceduresandupdatesiteprocedureswheneverrequirementsorprocessstepsinthisNuclearIndustryStandardProcess(NISP)arerevised.CurrentrevisionsaremaintainedontheINPOwebsite.

Terms,acronyms,anddefinitionsareprovidedinNISP-RP-13,RadiologicalProtectionGlossary.

ClarifyingnotesforrequirementsandprocessstepsareprovidedinSection4.0usingsuperscriptnumbersintheprecedingsections.

2.0 GeneralRequirements

2.1 OnlyHEPAandvacuumunitswithacurrentDOP/PAOtestcanbeusedtocontrolairborneradioactivity.

2.2 HEPAandvacuumunitsshallbeDOP/PAOtestedbasedonthemanufacturerrecommendationsbutasaminimumwillbetestedonceevery24monthsorwhenHEPAfiltermediaischanged.Dateforretestingwillbedisplayedontheunit.

2.3 OnlyHEPAcertifiedvacuumunitscanbeusedinsidetheRCA.

2.4 PhysicalinspectionisrequiredforallHEPAandvacuumunitspriortobeingplacedinservice.Specificattentionistobemadetoelectricalconnectsandpowercords,hosesandconnections,andequipmentguards.Donotoperateanyequipmentwithpotentialsafetydefects.

2.5 AllHEPAandvacuumunitsusedinsidetheRCAmustbetaggedasinternallycontaminatedandcannotbeopenedwithoutRadiationProtectionoversight.IftheunithasbeenusedinanalphaLevel3areaitmustbeindicatedonthetagaspossiblycontainingalphacontamination.

2.6 ContactIndustrialSafetypriortousingaHEPAventilationunitanytimethatvolatilesubstances,vaporsorfumesareexpectedtobegeneratedduringtheworkactivity.1

2.7 PortableHEPAventilationdoesNOTeliminatetherequirementsforairqualityorconfinedspacemonitoring.



Revision:0.0


Page2of13

2.8 Onlythosevacuumslabeledaswetvacuums,orwet/dryvacuumsorsystemsdesignedforthispurpose,shallbeusedtoremoveliquids.

2.9 HEPAsthatrequireanoperatingvoltagegreaterthan120VACwillrequiremaintenancesupportforelectricalconnections.HEPA’srequiringmulti-phasewiring(e.g.,480V3phase)shouldhaveproperrotationcheckedpriortoplacingtheunitintoservice

2.10 AllHEPAunitsandvacuumsusedintheRCA,whilenotinuse,willbecontrolledinamannertopreventunauthorizedremovalanduse.

2.11 Whennotintheuse,theopeningsoftheHEPAventilationunitandhoseswillbecoveredtopreventaccesstoanypotentiallycontaminatedsurfaceorcomponent.

2.12 AnOutofServicetagwillbeattachedtoanyHEPAventilationorvacuumunitremovedfromserviceduetoequipmentfailureorretestingduedate.

2.13 RadiationlevelsshouldbemonitoredontheHEPAunitsandvacuumswhiletheyareinservice.Whereavailable,andbasedonthepotentialforincreaseinradiationlevels,telemetryunitsshouldbeplacedonthefilterhousingtoprovideacontinuousmethodofmonitoring.

2.14 FirezoneloadingshouldbeconsideredwheninstallingHEPAequipment.

2.15 SparkarrestorsshallbeusedonallHEPAunitsforworkactivitiesthatgeneratesparkssuchasgrindingonmetal.2

2.16 DoNOToperateHEPAunitswiththeendofthesuctionhosecoveredasthiswilldamagecomponents,overheattheunit,andmayresultinfire.

2.17 SiteguidanceshouldbeutilizedfortheremovalandreplacementofHEPAfiltersbasedonunittypeandmodelavailable.

3.0 ProcessInstructions

3.1 SelectionofHEPAandVacuumequipment3.1.1 ThedecisiontouseHEPAventilationorvacuumequipment,andthetyperequired,willbemade

basedontheworkactivityandtheexpectedradiologicalconditionsandtheimplementinginstructionswillbeincludedintheRWPorALARAplan.

3.1.2 PriortodeterminingtheproperengineeringcontrolsthepotentialairborneactivitywillbeprojectedduringtheTEDEALARAprocessusedbythestation.Thepotentialairbornegenerationtakesintoconsiderationtheworkmethodsbeingused,plantventilationsystems,andenvironmentalconditions(e.g.wetsurfaces).Oncetheairbornegenerationratehasbeenprojectedtheproperequipmentcanbeselected.

SelectionofHEPA/VacuumEquipment

Section3.1

HEPA/VacuumSetup

Section3.2

MonitoringHEPA/VacuumOperation

Section3.3

StorageofEquipment

Section3.4



Revision:0.0


Page3of13

3.1.3 Unlesssitespecificinformationisprovided,useAttachment1,CaptureVelocityChart,todeterminethecapturevelocityneededbasedontheworkactivity.Iftheworkactivityhasbeencompletedsuccessfullyinthepastthenhistoricalinformationcanbeusedtodeterminethecapturevelocityrequirements.

3.1.4 Unlesssitespecificinformationisprovided,useAttachment2,EffectiveCaptureVelocityandDistanceChart,todeterminetheventilationhosesizerequirementsfortheworkactivity.

3.1.5 Selecttheproperventilationequipmentbytakingintoconsiderationthefollowingadditionalfactors:a. Weightloadingoftheequipmentonfloororgratingb. Abilitytopositionthehoseattherequireddistancetoprovidepropercapturevelocityand

allowtheworkersthevisibilitytoperformthetask.c. Sparkarrestorsshouldbeinstalledforallsparkproducingworkactivities.Considertheuse

offireresistanthosematerialifavailable.d. Considertheuseofanoisesuppressoronthedischargeoftheunittofacilitateabetter

workenvironment.3.1.6 Selectthepropervacuumunitdependingonthefollowingconditions

a. Wetordryconditionsareexpectedduringtheworkprocessb. Distancethematerialwillhavetobetransportedthroughthehosefromthesuctionpointto

thereceptacle.c. Potentialdoseratesonthematerialbeingvacuumed

3.1.7 Inapplicationswhereiodinegasisexpected,charcoalfiltersshouldbeconsidered/utilized.33.1.8 Ifacharcoalfilterbankisbeingusedtakeadditionalstepstomonitorforiodineatthedischarge

oftheunit.Severalfactorscontributetothecharcoalsabilitytoremoveiodineincludinghumiditywhichcanchangeoverthecourseofaworkactivity.

3.2 HEPA/VacuumSetup3.2.1 VerifytheHEPAorvacuumunitDOP/PAOtestingiscurrentpriortosetupinthefield.3.2.2 Verifythetamperproofsealorequivalentisinplaceontheunit.3.2.3 ValidatethecurrentradiologicalconditionsoftheunitareindicatedontheRAMlabelortag.3.2.4 Checkthephysicalconditionoftheunitincludingtheconditionofthepowercord.Donotplug

intoanelectricalpowersourceifthecordshowssignsofdamage.3.2.5 EachHEPAandvacuumunitshallhaveauniquenumberingsystemandshouldbesignedoutto

theworklocationusingAttachment3,HEPA/VacuumIssueandReturnLog,orelectronicallyusingsitespecificprocesses.

3.2.6 UsecautionwhenremovingendcoversofhosesorHEPAunitsduetothepotentialforinternalcontamination.Propercontaminationcontrolmeasuresshouldbeimplementedpriortoremovingthecovers.

3.2.7 EnsureexhaustoftheHEPAunitisdirectedawayfromacontaminationareaboundarytopreventthepotentialforairbornegeneration.

3.2.8 EnsuretheHEPAexhaustscreenisintactwhichpreventspersonnelinjuryfromrotatingequipment.



Revision:0.0


Page4of13

3.2.9 Usethefollowingguidancetoroutetheventilationhosea. Minimizetheamountofhoseusedtopreventthepotentialcollapsingofthetrunk.Keep

thehoseasstraightaspossiblefromtheunittotheworksiteb. Makesurethesuctionofthehoseislocatedintheproperlocationtoprovidethecapture

velocitynecessarytoprovidetheproperventilationc. Minimizesharpbendsorcurveswhichcanreducethesuctionflowandpreventthedesired

CFMfrombeingachieved.Ifsharpbendsarenecessaryconsidertheuseoffabricatedjoints.d. Routehoseinlowtrafficareasorintheoverheadtopreventtriphazardstopersonnel.As

appropriateusesafetyflaggingtomakepersonnelawareofthehazard.e. Ifthehoseisbeingroutedverticallyconsidertheneedforhosesupportsbasedonthe

weightoftheHEPAhosebeingused3.2.10 IfacharcoalfilterisrequiredinstallthedeviceinthesuctionoftheHEPAunitorperthe

manufacturer’sinstructions.3.2.11 AfterinspectionandinstallationoftheHEPAhose,connecttheunittopowersource.Iftheunit

usesgreaterthan120VACtheunitmustbeconnectedbyaqualifiedindividual.3.2.12 Poweruptheunitandobservethemagnehelicgauge,ifequipped,andensureitfallswithinthe

bandestablishedforthatunit.Ifthemagnehelicgaugeisoutsidethebandthensecuretheunitandtakethefollowingactionsa. Validatethehosedidnotcollapsewhiletheunitwasinoperation.b. Validatethemagnehelicgaugeconnectionsarenotloosec. Theendofthehoseisopenandfreed. Therearenosharpbendsinthehosewhichcouldreducetheairflowe. Ifnoissueswherefoundduringa-caboveconsidertheneedtoreplacetheHEPAand/or

Pre-filtersusingsiteguidance.f. Forunitsoperatingon3phase220/480VACitmaybenecessarytoverifytherotationofthe

unituponinitialstartup.3.2.13 ForoperationofvacuumunitsindividualsshouldreviewtherequirementsinAttachment5,

WorkerInstructionsforVacuumOperation.

3.3 MonitoringHEPA/VacuumOperations3.3.1 DoseratesmonitoringfrequencyforHEPAandvacuumunitsshouldbebasedonthepotentialfor

changingconditions.InmostcasestheunitsshouldbecheckeddailywheninuseoratasurveyfrequencydeterminedbyRPsupervision.Surveyfrequencyisdocumentedonattachment4.

3.3.2 Considerinstallingatelemetrydevice,ifavailable,andthereisthepotentialfortheHEPAorvacuumunittobecomeasourceofexposure.Installthemonitoringdeviceontheinletofthefilterassembly.

3.3.3 UseAttachment4,HEPAShift/DailyInspection,tovalidatetheoperationoftheunitonceperDay/ShiftoratthefrequencydeterminedbyRPsupervisionwhileinoperation.

3.3.4 TheeffectivenessofHEPAunitoperationshouldbemonitoredbasedontheriskassociatedwithfailureoftheunit.Forhighriskactivities(i.e.Steamgeneratorsventilation)considertheuseofcontinuousairmonitorstoprovideaquickindicationofequipmentfailure.Forothermediumtolowriskactivitiessmearthedischargeoftheunitand/orobtainairsamplestovalidatetheunitsoperation.



Revision:0.0


Page5of13

3.4 StorageofEquipment3.4.1 HEPAandVacuumequipmentshouldbestoredinacontrolledmannertopreventunauthorized

personnelfromplacingequipmentinservice.3.4.2 RPpersonnelwillmaintainthecontrolofHEPAandvacuumunitsbyissuingequipmentusing

Attachment3,HEPA/VacuumIssue/ReturnLog,orsiteelectronicprocessesorforms.3.4.3 FireloadingshouldbeconsideredbeforestoringHEPAventilationequipmentinsidetheplant.3.4.4 HEPAandvacuumequipmentshallbeclearlytaggedinaccordancewithNISP-RP-04,Radiological

PostingandLabeling.3.4.5 Charcoalfiltrationunitsshouldbestoredtopreventdamagefrommoisturebasedon

manufacturesrecommendations.

4.0 ClarifyingNotes

1 HEPAventilationequipmentcouldtransportharmfulvaporsorfumestootherareasoftheplantortheHEPAmediacouldbedamaged.EnsureapropersafetyevaluationhasbeencompletedpriortousingHEPAventilationequipmentwhenotherindustrialhazardsarepresent.

2 Duetotheflowofoxygenafireinaventilationhosecanspreadrapidly.Ensureproperprecautionsaretakenifsparkproducingworkistakingplaceinthearea.

3 AtsomesitesthedischargeoftheHEPAunitsmaybedirectedtowards,orattacheddirectlyto,theplantscontainmentpurgeorventilationsystem.Ensuretheequipmentisinstalledaccordingtositespecificdocumentsandtestedasrequiredpriortouse.

5.0 References

5.1 INPO05-008,GuidelinesforRadiologicalProtectionatNuclearPowerStations



Revision:0.0


Page6of13

Attachment1–CaptureVelocityChart

DispersionofContaminant

Examples

TypicalCapture

Velocity(FPM)

Releasewithpracticallynovelocityintostillair

• Evaporationfromtanks• Workon“wet”components

50–100

Releasedatlowvelocityintomoderatelymovingair

• Weldingspraybooths• Intermittentcontainertransfer• Handtoolworkon

contaminateditems

100-200

Activegenerationintorapidlymovingair

SprayPainting,BarrelFilling 200–500

Releasedathighvelocityintoveryrapidlymovingair

Grinding,abrasiveblasting 500-2000



Revision:0.0


Page7of13

Attachment1–CaptureVelocityChart



Revision:0.0


Page8of13

Attachment2–EffectiveCaptureVelocityandDistanceFlowRate CaptureVelocityinFeetperMinute(for12”Hose)

InCFM @Face @3” @6” @9” @12” @15”

500 636 354 152 78 46

600 764 425 183 94 56

800 1019 567 244 125 75

1000 1273 709 304 156 93 61

1200 1528 850 365 187 111 73

1400 1783 993 426 218 130 85

1600 2037 1134 487 250 148 97

1800 2292 1276 548 281 167 110

2000 2546 1417 608 312 185 122

FlowRate CaptureVelocityinFeetperMinute(for10”Hose)

InCFM @Face @3” @6” @9” @12” @15”

200 370 172 66

400 740 343 132 65

600 1110 515 197 98

800 1480 686 263 130 76

1000 1850 858 329 163 95 62

1200 2220 1030 395 195 114 74

1400 2590 1201 461 228 133 86

1600 2960 1373 526 260 152 98

1800 3330 1544 592 293 171 111

2000 3700 1716 658 325 190 123



Revision:0.0


Page9of13

Attachment2–EffectiveCaptureVelocityandDistance


InCFM @Face @3” @6” @9” @12” @15”

375 1069 385 131 63

500 1425 513 175 83 48

625 1781 641 219 104 60 39

750 2138 769 263 125 72 47

875 2494 897 306 146 83 54

1000 2850 1025 350 167 95 62

1125 3206 1154 394 188 107 70

1250 3563 1282 438 208 119 78

1375 3919 1410 481 229 131 85

1500 4275 1538 525 250 143 93

1750 4988 1794 613 292 167 109

2000 5700 2051 700 333 191 124



Revision:0.0


Page10of13

Attachment2–EffectiveCaptureVelocityandDistance


InCFM @Face @3” @6” @9” @12” @15”

85 442 104

125 650 153 47

200 1040 245 74 34

300 1560 368 112 52

400 2080 490 149 69 39

500 2600 613 186 86 49 32

600 3120 736 223 103 59 38

700 3640 858 260 120 69 44

800 4160 981 298 138 78 50

900 4680 1103 335 155 88 57

1000 5200 1226 372 172 98 63



Revision:0.0


Page11of13

Attachment3–HEPA/VacuumIssue/ReturnLog-Sample

HEPA/VacuumNumber LocationofUse

PlacedBy

Print/Sign

ReturnedtoStorageBy

Print/Sign Date

Time

DOP/PAOCurrent

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No

Yes No



Revision:0.0


Page12of13

Attachment4–HEPA#________InspectionLog-Sample

InspectionFrequencyDaily/Shiftly/Other_______(Circleoneoftheabove;ifotherspecifythefrequency)

Date/Time Location Smear results

Dose Rate Magnehelic Reading

Physical Inspection

Performed By

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat

/ Sat / Unsat



Revision:0.0


Page13of13

Attachment5–WorkerInstructionsforVacuumOperation–Sample

1. Ifatanytimeyouareuncertainaboutyourresponsibilities,placeworkinasafeconditionand

immediatelycontactRPforguidance.2. OnlyuseavacuumunitthathasbeenDOP/PAOtestedwithinthelast24months3. DoNOTopenavacuumunitwithoutcontactingRP.4. Donotusethevacuumforanyotherjobortaskthantheoneforwhichthevacuumwasissued.5. Donotusewetvacuumsfordryworkordryvacuumsforwetwork6. Ifadryvacuuminadvertentlycollectsliquids,thenstopwork,shutoffunitandcontactRP.7. Ensurethatthevacuumcleanerandassociatedequipmenthasayellowradioactivemateriallabelortag

withdoserateinformation.Ifthetagisnotattached,contactRPpriortouseforsurveying.8. Ifyouhavereasontobelievethatdoseratesorcontaminationlevelsonthevacuumcleaneror

attachmentshavechangedduringuse,thencontactRPtoperformaradiologicalsurveyandupdatetheradioactivemateriallabelortag

9. Verifytheunithasatamperproofsealorequivalentinstalledandisintact.10. Covertheopeningsonthesuctionlinesafteruse,orbetweenuses,topreventreleaseofcontamination.11. Immediatelydiscontinuetheuseofvacuumcleaner(s)thatdonotperformproperly,havesafetyissues,

orappeartobeleakingordischargingatanylocationotherthanthenormaldischargeport.12. Ifthevacuumbecomesfullandneedstobeemptied,thencontactRP13. Returnvacuumcleanertoissuestationwhennolongerneeded.

Documents

Use and Control HEPA Filtration and Vacuum Equipment NISP ... · Use and Control HEPA Filtration and Vacuum Equipment NISP-RP-08 Revision: 0.0 ... 3.2.12 Power up the unit and observe