isx g and lng system owner's manual -...

GX and LNG System Operator’s

Manual

EPA 07 and ADR80/02

Models

ii

Emergency Situations• Fireon-boardthevehicle

• Uncontrolledseverenaturalgasleak

• AnyothercircumstancerequiringassistancefromEmergencyPersonnel

Emergency Response Procedure

Gas Leak Classification and ResponseSevere:

• UncontrolledspillorsprayofLNG

• Aleakwhichresultsinalargevaporcloud

• Anyleakwherethevehicleislocatedinaplacewheregasmayaccumulate

• Anyleakwhereasourceofignitionisincloseproximitytothevehicle

Response:followEmergencyResponseProcedure

Significant:

• On-boardgasdetectorisinalert(redindicatorlight)

• Noother“Severe”conditions

Response:seeSection 3.3—Gas Detection Monitor: Table 3—Gas detection interpretation

Trace:

• On-boardgasdetectorisintracealarm(yellowindicatorlight)

• Noother“Severe”or“Significant”conditions


Driver Safety – Quick Reference Page

Find a safe place to pull over

Turn off engine

Turn off Emergency Shut-off Valve (if equipped) and Accumulator Isolation Valve

IF SAFE TO DO SO

Call Emergency Responders Inform them that LNG and CNG are on board

Clear and secure the largest practical perimeter

Inform shop / dispatch

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Westport™ GX and LNG System Operator’s Manual EPA 07 and ADR80/02 Models

©2008,2009WestportPowerInc.

Allrightsreserved.Nopartofthisdocumentmaybereproduced,storedinaretrievalsystem,ortransmittedinanyform,byanymeans,withoutthepriorwrittenpermissionofWestportPowerInc.

ThisdocumentiswrittenandpublishedbyWestportPowerInc.inVancouver,BritishColumbia,CanadaforWestportPowerInc.anditsaffiliates.Everyprecautionhasbeentakentoensureitsaccuracy.Ifyoudofindanerror,pleasecontactus.WestportPowerInc.anditsaffiliatesassumenoresponsibilityforerrorsinthisdocument,omissions,ortheirconsequences.Theinformationissubjecttochangewithoutnotice.

Ifyouhaveanyquestionsabouttheinformationinthisguide,orifyouneedserviceassistance,pleasecontacttheWestportHeavy-DutyServiceTeam.

North America:

Toll-free: 1-888-WPT-HPDI 1-888-978-4734E-mail: [email protected]: http://www.westport-hd.com http://service.westport.com

ForalistingoflocalservicecontactsrefertoAppendix C—Contact Informationofthismanual.

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Table of ContentsDriver Safety – Quick Reference Page iiList of Figures and Tables viAbout This Guide viiDefinitions and Acronyms viiiGeneral Safety Instructions ix1. Description of the Westport LNG System 1

1.1 What the Westport LNG System Is 11.2 What the Westport LNG System Does 11.3 How the Westport LNG System Works 11.4 Location of Westport LNG System Components 1

1.4.1 Inside the Cab 11.4.2 Inside the Engine Bay 31.4.3 Outside the Engine Bay 5

2. Pre-Trip Inspection 112.1 Check Inside the Cab 112.2 Check Inside the Engine Compartment 122.3 Check Outside the Engine Compartment 13

3. Starting and Driving 153.1 Starting the Engine 153.2 Westport LNG System Monitor 16

3.2.1 Top Westport LNG System Display Window 163.2.2 Bottom Westport LNG System Display Window 17

3.3 Gas Detection Monitor 173.4 Turning the Truck Off 193.5 Post-Trip Inspection 193.6 Exhaust Aftertreatment Considerations 193.7 Parking—General and for Maintenance 20

4. Westport LNG System Safety Precautions 214.1 Fuels 21

4.1.1 Liquefied Natural Gas 214.1.2 Natural Gas Vapor and CNG 214.1.3 Diesel 22

4.2 High Pressure 234.3 Pressure Safety Devices 23

4.3.1 Automatic Relief Valves 234.3.2 Manual Valves 25

4.4 Gas Leaks Classification and Response 264.5 Emergency Response 27

5. Safe LNG Truck Fueling 285.1 LNG Fueling Safety Equipment 28

5.1.1 Recommended Personal Protective Equipment 285.1.2 Truck Equipment 28

5.2 LNG Fueling Basics 295.3 Incident Reaction 30

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5.4 Pre-Fueling 315.5 LNG Fueling 315.6 Venting 33

5.6.1 Venting to Station 335.6.2 Venting to Atmosphere 34

5.7 Minimizing Venting and Fuel Loss 36

6. Westport LNG System Maintenance and Care 376.1 Maintenance Schedules 37

6.1.1 Natural Gas Code Required Maintenance 406.1.2 Oil Drain Intervals 40

6.2 Recommended Fluids and Capacities 416.2.1 LNG Composition Specifications 416.2.2 LNG Cleanliness Specifications 416.2.3 Lubricating Oil Specifications 416.2.4 Coolant Specifications 426.2.5 LNG Pump / Steering Fluid Specifications 426.2.6 Diesel Fuel Specification 426.2.7 Biodiesel Fuel Use in the LNG System 436.2.8 Usable LNG Tank Sizes 43

6.3 Fuel Weathering 446.4 Running on Diesel (ROD) Operation 446.5 Minimizing Tank Contamination 44

7. Diagnostics and Troubleshooting 457.1 Frozen Valves 457.2 Leak at Tank Fuel Receptacle 467.3 Excessive “Please Wait…” Message Time 46

7.4 Crank, But No Start Condition 467.5 Difficulty Fueling with LNG 477.6 Jump Starting your LNG Truck 477.7 Sweaty LNG Tank / Low Fuel Efficiency 47

8. LNG Properties and Handling 498.1 Physical Properties 498.2 Safety Hazards 498.3 First Aid 508.4 Sample LNG MSDS 50

Appendix A. Daily Log Sheet 54Appendix B. Towing and Recovery 58Appendix C. Contact Information 59

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List of Figures and TablesFigure 1 Westport LNG System Monitor 2Figure 2 Gas detection monitor 2Figure 3 Engine bay 4Figure 4 LNG tank and plumbing 7Figure 5 Westport LNG System Controllers, high-pressure

accumulator, and associated plumbing 8Figure 6 Vent stacks, filter, and drain port 9Figure 7 Remote fill panel 10Figure 8 Secondary relief valve 13Figure 9 Westport LNG System Monitor 15Figure 10 Westport LNG System Monitor 16Figure 11 Gas detection monitor 17Figure 12 Gas detection monitor – [PUSH TO TEST] button 18Figure 13 LNG tank shroud automatic pressure relief valves 24Figure 14 High-pressure accumulator plumbing 24Figure 15 LNG tank shroud manual pressure relief valves 25Figure 16 LNG tank ground clamp attachment 32Figure 17 Remote fill panel attachments 32Figure 18 Tank shroud labels 35

Table 1 Westport LNG System Monitor messages 17Table 2 Gas detection zone assignment 17Table 3 Gas detection interpretation 18Table 4 Automatic relief valves and devices 23Table 5 Manual valves 25Table 6 Oil drain intervals 40Table 7 LNG tank volumes 43

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About This GuideThis guide covers the Westport LNG System.

ThisguideisforoperatorsoftrucksusingtheWestportliquefiednaturalgas(LNG)Systemwithhigh-pressuredirectinjection(HPDI)technology.SupplementalWestportLNGSystemOperatorTrainingisalsoavailable.FormoreinformationontrainingortheWestportLNGSystem,pleaseusethecontactinformationlistedinAppendix C—Contact Information.

ThisguidecontainsthebasicinformationyouneedtoknowabouttheWestportLNGSystemonyourtruck.RefertotheOEMOperator’sManualprovidedwithyourtruckforotheroperationandmaintenanceinformation.

Thisguideprovides:

• WestportLNGSystemoverview

• WestportLNGSystemspecificoperatingprocedures and guidelines

• WestportLNGSystemsafetyprecautions

• WestportLNGSystemmaintenanceandcare

• Fuelingprotocolandsafety

AfteryoubecomefamiliarwiththeWestportLNGSystemanditscomponents,youcanusetherestofthisguideasareferenceandsourceofinformationontheWestportLNGSystem.

Westportwelcomesyourcomments,suggestions,andquestions.YoucancontactyourlocalWestportServicerepresentativelistedinAppendix C—Contact Informationofthisguide.

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Definitions and AcronymsWARNING!

Serious personal injury or extensive property damage can result if the warning instructions are not followed.

API AmericanPetroleumInstitute

°C Celsius

CARB CaliforniaAirResourceBoard

CGA CompressedGasAssociation

CNG compressednaturalgas

DPF dieselparticulatefilter

ECU electroniccontrolunit

ESD emergencyshut-down

EPA EnvironmentalProtectionAgency

°F Fahrenheit

FCM FuelConditioningModule

GVW grossvehicleweight

hp horsepower

HPDI high-pressuredirectinjection

km/h kilometersperhour

kPa kilopascal

L liters

LEL lowerexplosivelimit

LNG liquefiednaturalgas

MPa megapascal

mph milesperhour

MSDS MaterialSafetyDataSheet

NFPA NationalFireProtectionAgency

NG naturalgas

OEM originalequipmentmanufacturer

PPE personalprotectiveequipment

PRV pressurereliefvalve

psi poundspersquareinch

ROD runningondiesel

rpm revolutionsperminute

CAUTION! Minor personal injury can result or a part, an

assembly, or the engine can be damaged if the caution instructions are not followed.

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General Safety InstructionsWARNING!

Improper practices, carelessness, or ignoring the warnings can cause burns, cuts, mutilation, asphyxiation or other personal injury or death

ReadandunderstandallofthesafetyprecautionsandwarningsbeforeuseoftheWestportLNGSystemtruck.Thislistcontainsthegeneralsafetyprecautionsthatmustbefollowedtoprovidepersonalsafety.

Naturalgasislighterthanairandcanaccumulateinenclosedspaces,suchasunderthehoodorunderawnings.Ifthereisanignitionsource,anexplosioncouldresult.

PARKINGOUTSIDEISMANDATORYduetonormalventingofnaturalgas.

Naturalgasiscolorlessandodorless.Somenaturalgassuppliersaddanodoranttonaturalgas.However,liquefyingnaturalgasdestroysthisodorant.

WestportLNGSystemtrucksareequippedwithagasdetectionmonitor.Youmustchecktheoperationofthegasdetectionmonitorandlistenforsoundsofaleak.Ifyoudetectsignsofaleak,seeredoryellowlights,hearagasalarm,orcannotseethegreenpowerlightonthedetector,doNOTenteroroperatethetruck.Notifytheshopfromoutsidethetruck.

Donotstayinanaturalgasvaporcloud.Naturalgasdisplacesoxygenandwillcauseasphyxiation.

TheWestportLNGSystemcontainshighpressuregas,liquid,andcryogenicfluid—evenwhenthetruckisturnedoff.NounauthorizedoruntrainedpersonshouldEVERattemptmaintenanceorrepairsonaWestportLNGSystemtruck.Donotturnvalvesyouareunfamiliarwith.Highpressureblastorcryogenicburninjuriescouldoccur.

WestportLNGSystemrepairsmustbecompletedonlyatCertifiedWestportLNGSystemshops.

Onlyoperate“ServiceOnly”valvesifyouareaqualifiedWestportLNGSystemstechnician.

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Releaseofhighpressuregasorfluidcanbreakorpropelcomponentswithexplosiveforce.

LNGisacryogenic(extremelycold)fluid,whichmustbestoredatcryogenictemperatures.Avoidcontactwithliquidandplumbing.Freezingburnsandlacerationscouldoccur.

Wearappropriatepersonalprotectiveequipment(PPE)whenfuelingorworkingaroundtheLNGtankorplumbing.

Tankpressurecanrise275kPa(40psi)perdaywhenthetruckisparked.

Iftankpressurereadszero,notifytheshopasthismayindicatealeak.

Fuelingrecommendationsinthismanualareforguidelinepurposesonly.YoumustreceivetrainingtoyourspecificLNGfuelingstation.

General Safety Instructions (continued)Naturalgasvaporisflammablewhenmixedwithair,andisignitablebystaticdischarge.Ensuretruckisproperlygroundedduringfueling.Donotsmokeduringfueling.WestportrecommendsnotsmokingwhileoperatingaWestportLNGSystemtruck

DamagetotheWestportLNGSystemcanoccurifthecoolantmixtureisincorrect.Ensurecoolantmixturecontainsapprovedantifreeze.

Containliquidspillsasbestaspossibletopreventtheliquidorgasfromenteringthesewage/stormdrainsystem.Keeptheresultingvaporcloudawayfrombuildingsorventilationsystems.

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1. Description of the Westport LNG SystemThissectiondescribestheWestportLNGSystemanditscomponents.

1.1 What the Westport LNG System IsTheWestportLNGSystemisafuelinjectionsystemdevelopedbyWestportPowerInc.Itallowsdieselenginestousenaturalgasastheprimaryenginefuel.

1.2 What the Westport LNG System DoesBysubstitutingover95%ofdieselfuelwithcleanburningnaturalgas,atruckusingtheWestportLNGSystemsignificantlyreducesemissionsandmaintainsthesamepowerandperformanceasanequivalentdiesel-onlytruck.

1.3 HowtheWestportLNGSystemWorksLNGisdrawnfromtheLNGtankandispressurizedbythetank-mountedLNGpump.Usingwarmenginecoolant,avaporizer(heatexchanger)warmsthehigh-pressureLNG,changingittohigh-pressurenaturalgasvapor.Thishigh-pressurevaporiscalledcompressednaturalgas(CNG)andprovidesprimaryfueltotheengine.

Simultaneously,dieselisdrawnfromthedieseltanktoanengine-mounted,high-pressuredieselpump.Thehigh-pressuredieselisfedtotheFuelConditioningModule(FCM)thatcontrolsthedieselpressuretotheinjectors.

Insidetheengine,aspecialHPDIinjectordeliversasmallamountofdieselfueland,almostsimultaneously,alargeamountofcompressednaturalgasintothedieselenginecombustionchamber.Thedieselfuelignitesthenaturalgas,whichthenprovidestheengine’spowerstroke.

1.4 Location of Westport LNG System Components

WestportLNGSystemcomponentsarelocatedinthreegenerallocationsonthetruck:

1.4.1 Inside the Cab

TheWestportLNGSystemaddstwospecializedmonitorstothestandarddashboarddisplays:

• Westport LNG System MonitorIndicatestheWestportLNGSystemstatus,includingLNGfuellevelandsystemparameters.Displaysstatusandsystemfaultmessages(seeSection 3.2— Westport LNG System Monitorformoreinformation).

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1.4.1 Inside the Cab (continued)

• Westport LNG System Monitor (continued)

TANK 1

Figure 1—Westport LNG System Monitor

• Gas Detection MonitorMonitorsandindicatesnaturalgasleaksfromthesystemintwokeyzones:inside the cabandinside the engine bay.

Ifgasdetectionmonitorisnotasshown,refertoOEMsupplementaldocumentation.

Cab

Engin

e Bay

GASCONCENTRATION:

SilenceEngaged

RelayEngaged

Pushto

Silence

RelayReset

Pushto

Test

Figure 2—Gas detection monitor

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1.4.2 Inside the Engine Bay

• Fuel Conditioning Module (FCM)Amanifoldthatcontrolspressureandsupplyofnaturalgasanddieseltotheengine.Itcontainsadieselsafetyreliefvalve,aswellasagasventvalveforsystemmaintenance.

• High-Pressure Diesel Pump AnenginemountedpumpwhichisbeltdrivenoffacustomWestportcrankshaftpulley.Thepumpprovideshigh-pressuredieseltotheFCM.

• Low-Pressure Diesel PumpAframe-mounteddieselliftpumpthatincorporatesafirstchancefilterandwaterseparator.

• HPDI Injectors HPDIinjectorsreplacetheoriginaldieselinjectorsanddeliverbothdieselandnaturalgasintothecombustionchamber.

• Hydraulic Reservoir Mountedintheenginebay,thereservoirprovideshydraulicfluidtoruntheLNGpumpaswellasthepower-assistedsteeringsystem.

• Engine Oil FillLocatednearthevalvecover,theengineoilfillreplacesthebaseengineoilfilltoincorporatetheinjectorwireharnesspassthrough.

• High-Pressure Hydraulic PumpAdualvanehydraulicpumpthatprovideshigh-pressurehydraulicfluidtodriveLNGpump(s),andoperatesthebaseenginepowersteeringcircuit.

• Hydraulic Oil CoolerMountedbeneaththeradiatorbetweenthebumpersupportandforwardenginemount,behindthecab,orinthecoolingpack,thisitemcoolsthehydraulicfluid.

• Dosing Pump ThedosingpumpisequippedontrucksfittedwithanintegratedCumminsParticulateFilter.

Wherefitted,thispumpsuppliesfueltothedieselparticulatefilter(DPF)aspartoftheexhaustaftertreatmentsystem.

SeeOEMmanualsanddocumentationformoreinformationregardingtheexhaustaftertreatmentsystem.

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1.4.2 Inside the Engine Bay (continued)

Figure 3—Engine bay (other configurations possible)

Vent stack filter

High-pressure hydraulic pump

Dosing pump

Low-pressure diesel pump

High-pressure diesel pump

Hydraulic reservoir

Engine oil fill

FCM

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1.4.3 Outside the Engine Bay

• LNG Storage Tank(s)OneormorestainlesssteelLNGtanksaremountedontheframerailorbehindthecab.BecausethetankholdsLNG,whichisextremelycold,itisconstructedasadouble-walledvessel.Theinnerandouterwallsareseparatedbyinsulationandavacuumspacetoprovideexcellentprotectionfromtheoutsideenvironment.ThisinsulationkeepstheLNGtemperaturelowforlongerperiodsoftime.Westportofferssingleormultipletankconfigurations.

• LNG Pump TheLNGpumpismountedinsidethetank(seeFigure 4).Thepumpdrawsandpressurizesliquefiednaturalgas,whichisvaporizedwiththeaidofwarmenginecoolantintocompressednaturalgasthatisdeliveredtothehigh-pressureaccumulator(seeFigure 5).

• LNG Tank Valves(see Figure 4)

Automatic Pressure Relief Valves (PRV)LocatedinsidetheLNGtankshroud,thepressurereliefvalvesprotectthesystemfromover-pressure.Intheeventofanover-pressurecondition,thevalvesventtheexcessgasthroughtheventstackintotheatmosphere.TheLNGtankisequippedwithaprimaryandasecondaryreliefvalve:

Primary Relief ValveAvalvedesignedtoopenwhentankpressureexceeds1,600kPa(230psi).Itclosesautomaticallywhentankpressurefallsbelow1,600kPa(230psi).

Secondary Relief Valve Avalvedesignedtoopeniftankpressureexceeds2,200kPa(315psi),iftheprimaryreliefvalvemalfunctions.Itisequippedwithasafetycaptokeepdebrisandmoistureoutofthevalve.However,thiscapwillblowoffwhenthevalveopens,indicatingapossibleprimaryreliefvalvemalfunction.ThepresenceofthiscapmustbecheckedduringthePre-TripInspection(seeSection 2.3—Check Outside the Engine Compartment).

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1.4.3 Outside the Engine Bay (continued)

• LNG Tank Valves(continued,see Figure 4)

Manually Operated ValvesPrimarilylocatedinsidetheLNGtankshroud,includes:

Manual Emergency Shut-Off Valve (if equipped) LocatedbelowtheLNGpump,theprimaryfunctionistoshutoffthegasexitingfromtheLNGpumpandtank.Thisvalve(redhandle)mustbeopenduringnormaloperation.The“TankShut-OffValveClosed”messageisdisplayedontheWestportLNGSystemMonitorwhenthevalveisclosed(seeSection 3.2—Westport LNG System Monitor).Somemodelsareequippedwithanautomaticversionofthisvalve.

Vent-to-Station ValveLocatedinsidethetankshroudontheleft-handside,thisvalvecontrolsthereturnofexcessfuelvaportothestation.Theexcessvaporissafelyreturnedthroughthestation’sfuelhose,ordedicatedstationventlinepriortorefueling.SeeSection 5.6—VentingformoreinformationonventingLNGtanksforfueling.

Vent-to-Atmosphere Valve Locatedinsidethetankshroudontheright-handside,thisvalvecontrolstheventingofexcesstankvaporsafelythroughthevehicle’sventstacktothe

atmospherewhenvent-to-stationisnotavailableorpossible.SeeSection 5.6—VentingformoreinformationonventingLNGtanksforfueling.

Service ONLY Valves (to be used by qualified personnel only)

Liquid Drain ValveDrainsLNGfromthetankpriortoatankorpumpserviceorrepair.

Accumulator High-Pressure Gas Shut-Off Valve Locatedneartheaccumulator,thisvalveisolatesthehigh-pressuregasintheaccumulatorduringdownstreamgassystemmaintenance.Thisvalveshouldonlybeoperatedbytrainedrepairpersonnelusingvalvelock-outproceduresduringmaintenance(seeFigure 5).

AdetaileddescriptionofthevalvesandtheirfunctionsisinSection 4.3—Pressure Safety Devices.

WARNING! The Westport LNG System contains high-pressure

gas, liquid, and cryogenic fluids—even when the truck is turned off. No unauthorized or untrained person should EVER attempt maintenance or repairs on a

Westport LNG System truck. Do not turn valves you are unfamiliar with. Serious high-pressure blast or

cryogenic burn injuries could occur.

7

Figure 4—LNG tank and plumbing (other configurations possible)

Secondary tank relief valve (2,200 kPa / 315 psi)

Vent-to-station valve

Manual emergency shut-off valve

LNG pump

Vent-to-atmosphere valve

Primary tank relief valve (1,600 kPa / 230 psi)

To vent stack

Water drain

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• Westport LNG System Control Consistsoftwoon-boardelectronicsmodulesconfiguredinaparent-childrelationship.ThesemodulescontroltheWestportLNGSystemincluding:HPDIinjectors,LNGpump,andengineparameters.Modulesaremountedonthechassis,orbeneaththecabanddisplaymessagesontheWestportLNGSystemMonitor.

Figure 5—Westport LNG System Controllers, high-pressure accumulator, and associated plumbing (other configurations possible)

Westport LNG System Controllers

Accumulator high-pressure gas

shut-off valve

High-pressure gas filter

High-pressure accumulator

• High-Pressure AccumulatorThehigh-pressureaccumulator,containingCNGathighpressure,islocatedbetweentheframerails,orbehindthecab.ItisusedtoreducegaspressurepulsesinthesystemintroducedbytheLNGpump.High-pressuregasisdeliveredfromtheaccumulatortotheengineforcombustion.

9

Figure 6—Vent stacks, filter, and drain port (other configurations possible)

Vent stacks

Vent stack filter

Drain port

• High-Pressure Gas Filter Mountedneartheaccumulator,thehigh-pressuregasfilterprovidesprimaryfiltrationforCNGenteringtheengine.

• Gas Vent Stacks Theventstacksaresmallpipesthatrunupalongthebackofthecab.Theyserveasawayforexcessgastoescapesafelyupandawayfromthetruck.

Therearetwoventstacks:oneventstheLNGtanks;theotherventstheenginegasrail,FCM,andaccumulatorpressure.Thesecondventstackisequippedwithafilteranddrainport.SeeSection 6.1—Maintenance Schedulesfordrainintervals.

• Remote Fill Panel Equippedonsomemodels,thispanelallowsmulti-tanksystemstobefueledfromonelocation.Theremotefillpanelisequippedwithventportsandagroundinglug(seeFigure 7).Formoreinformationonfueling,pleaseseeSection 5—Safe LNG Truck Fueling.

10


Figure 7—Remote fill panel (if equipped)

Fuel nozzle

Vent line receptacle

Ground lug

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2. Pre-Trip InspectionTheWestportLNGSystemrequiresregularmonitoringandmaintenancetoensuremaximumperformanceandsafety.Beforestartingyourtrip,completethepre-tripinspectiondescribedinthefollowingsectionsinadditiontoyournormalrequiredtruckwalk-around.Thereisasamplepre-andpost-tripinspectionsheetinAppendix A—Daily Log Sheetofthismanual.





2.1 CheckInsidetheCab

WARNING! Naturalgasiscolorlessandodorless.Youmustcheck

the operation of the Gas Detection Monitor and listen for soundsofaleak.Ifyoudetectsignsofaleak,seeredoryellowlights,hearagasalarm,orcannotseethegreenpowerlightonthedetector,doNOTenteroroperatethe

truck.Notifytheshopfromoutsidethetruck.

Beforeenteringthetruck,checkthegasdetectionmonitorlocatedinthedashboard(seeFigure 2).Section 3.3—Gas Detection Monitordescribesthefunctionofthegasdetectionindetail.

Before entering the cab:

1. Check for a green power light on the Gas Detection Monitor.Ifthegreenlightisoff,gasdetectionhasbeendisabled—DoNOTstartthetruck;notifytheshop.

2. Check for red or yellow lights on display.Ifredoryellowlightsareon,thisindicatesaleak—DoNOTstartthetruck;notifytheshop.

3. Listen for an alarm.Ifyouhearanalarm,thisindicatesaleak—DoNOTstartthetruck;notifytheshop.

4. Listen for an audible (hissing) noise; it may indicate a leak—DoNOTstartthetruck;notifytheshop.

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2.1 CheckInsidetheCab(continued)After entering the cab:

1. Checktheoperationofthegasdetectorbypressingthe[TEST]buttononthegasdetectionmonitor.Formoreinformationoncheckingandtestingthegasdetectionmonitor,seeSection 3.3—Gas Detection Monitor.

2. Checkthatrequiredsafetygearforfuelingisinplace,ifyourefuelthetruckyourself(seeSection 5.1—LNG Fueling Safety Equipment).

3. Turnkeytothe[ON]positionandchecktheOEMdieselfuellevelgaugetoensurethatyouhavediesel.Section 6.2.6—Diesel Fuel Specificationcontainsinformationondieselfueltypeandexpectedusage.

4. Withthekeyinthe[ON]checkLNGfuellevelsdisplayedontheWestportLNGSystemMonitor.Section 6.2.1—LNG Composition SpecificationscontainsinformationonLNGFueltype.

5. Turnkeytothe[OFF]positiontocompletenextchecks.

2.2 CheckInsidetheEngineCompartmentWiththeengineoff,inspecttheenginebayforanyleakssuchasdieselfuel,engineoil,hydraulicfluid,andgasleaks.Listenforthesoundofaleak.Checkthefollowing:

Hosesandfittings

Drainalldieselfuel-waterseparators

Drainventstackfilter

High-pressuredieselpumpandtheconditionofthebelt

Hydraulicpumpandfittings

FCM

Hydraulicreservoir/powersteeringlevel

Hydraulicoilcoolerisunblockedandfreeofdebris

Thefrontandsidesofengineforoilleaks.

Notethelocationofanyleaksorabnormalitiesandhavethemrepairedbyaqualifiedtechnicianbeforeoperatingthetruck.

13

Safety cap

Figure 8—Secondary relief valve

Normaltankpressurecanvarybetween205kPaand1,600kPa(30and230psi).Adviseaqualifiedtechnicianifthepressurevariesaboveorbelowthenormalrange,orifthetruckventsfrequently.

Ifyounoticemorefrostingthanusual,itmayindicatealeak.Notethefrostedareaandreportittotheshopimmediately.Anyleakmustberepairedbeforestartingthetruck.

Ventingwillproduceanaudiblehissingsoundfromtheventstacks.Reportuncontrolledventingtotheshop,asrepairsmayberequired.

2.3 CheckOutsidetheEngineCompartmentInspecttherestoftheWestportLNGSystemcomponentsforexternaldamage,leaks,ortampering.Lookto:

Checkthehigh-pressuregasfilterlocatedneartheaccumulatorforleaksordamage

InspecttheLNGtankandvalvesforabnormalfrostoraudibleleaks

Checktheventstackforexcessiveventing

Checkthatthesafetycapispresentonthesecondaryreliefvalve(seeFigure 8)

Makesurevent-to-stationvalveisclosed.

Note:theplasticsafetycapinstalledonthesecondaryreliefvalvekeepsmoistureanddebrisoutofthevalve.However,italsoindicatesifthesecondaryreliefvalvehasbeenused.Theabsenceofthecapindicatesapossiblemalfunctionoftheprimaryreliefvalve.Alwayscheckandreporttotheshopifthesecondaryreliefvalvecapismissingbefore startingyourtrip(seeSection 4.3.1—Automatic Relief Valves).

14

2.3 CheckOutsidetheEngineCompartment (continued)

Remember! The reading on the LNG tank pressure gauge has

NO correlation to amount of fuel in the tank.

WARNING! Iftankpressurereadszero,notifyshop,

asthismayindicatealeak.





PRE-TRIP SUMMARY

Checkgasdetectionmonitorstatusbeforeenteringcab.

Testgasdetectionmonitoroperationbypushing[TEST]button.

Checkenginecompartmentcomponentsforleaks,tampering,anddamage.

Checkforrequiredfuelingsafetygear,ifplanningtorefuelyourself.

CheckLNGanddieselfuellevels.

CheckLNGtanksandframe-mountedcomponents.

Checksecondaryreliefvalvecap.

Checkvent-to-stationvalveisclosed.

Checkhydraulicoilcoolerisunblockedandfreeofdebris.

15

3. Starting and DrivingAWestportLNGSystemequippedtruckisdrivenexactlylikeanequivalentdiesel-poweredtruck.Thepowerbandandshiftingpointsaresimilar.TheonlydifferencewhiledrivingistochecktheWestportLNGSystemMonitor.Section 3.2—Westport LNG System MonitorandSection 3.3—Gas Detection Monitorcovertheinstrumentationindetail.

3.1 Starting the Engine

CAUTION!The user of ether as a cold climate starting aid is not recommended for the Westport LNG System and may

lead to component damage.

The engine should be started only after a complete pre-trip inspection.ThestartingprocedureofaWestportLNGSystemtruckisthesameasaregulardieseltruck.Tostartthetruck,turnthekeytothe[START]positionandcranktheengineuntilitfires.SeeSection 7—Diagnostics and Troubleshootingiftheenginehasproblemsstarting.

TANK 1 TANK 1 TANK 2

Figure 9—Westport LNG System Monitor (single and dual tank systems shown)

Note:ifthereareanymessagesontheWestportLNGSystemMonitor,followtheinstructionsshownonthedisplay.Whenyoufirststartthetruck,themessage“PleaseWait…”isshownuntilthecoolantissufficientlywarmedand/orthehigh-pressureaccumulatorisfullycharged.Whilethismessageisshown,youcanbobtailthetruck(withnoloadortrailer)aroundtheyardtoamaximumof6mph(10km/h).Anaudiblealarmissoundedwhentruckexceedsspeedlimit.SeeSection 3.2—Westport LNG System Monitorformoreinformation.

16

3.1 Starting the Engine (continued)

CAUTION!Exceeding speed limit while “Please Wait...” message

is displayed may cause Westport LNG System components to freeze up.

START-UP SUMMARY

1. Turnignitiontothe[START]positionandcrankengineuntilitfires.

2. WaitfortheWestportLNGSystemMonitortoshowanormaldrivingscreen.

3. Donotexceed10km/h(6mph)when“PleaseWait…”messageisdisplayed.

4. Checkcontrolsandgaugesbeforebeginningyourtrip.

5. Ifnofaultsormessages,youcanbegintodrive.

3.2 Westport LNG System MonitorTheWestportLNGSystemMonitordisplaysmessagesaboutthestatusoftheWestportLNGSystem.Themainscreenhastwowindows.

TANK 1

LNG fuel tank level meter (showing 5/8 full)

Disabled pump indicator (pump not working)

Cold gas discharge temperature indicator (coolant temperature too low, usually accompanied with “Please Wait...” message

Figure 10—Westport LNG System Monitor (top window summary, bottom window message example)

3.2.1 TopWestportLNGSystemDisplayWindow

Thetopwindowshows:

• LNG fuel tank level meter and LNG pump icon

• Disabled LNG pump indicator-(Xthroughthepumpicon)

• Cold gas discharge temperature indicator-(snowflakeunderthepumpicon)

17

Fortrucksequippedwithmultipletanks,thetankiconwillflashtoshowwhichtankfuelisbeingdrawnfrom.Undernormalconditions,thisshouldalternatebetweentanks.

3.2.2 BottomWestportLNGSystemDisplayWindow

TheLNGSystemhasthefollowingoperatormessages:

Table 1—Westport LNG System Monitor messages

Message Alarm Cause ActionPlease Stop Engine…

YES Significant engine issue

Pull over, stop engine, and call shop/service

Check for CNG Leak

YES Possible high-pressure gas leak

Pull over, stop engine, and call shop/service

Prepare to Stop YES Loss of gas supply Prepare to pull over and stop

Please Wait… YES* Coolant not sufficiently warmed

Wait before driving truck over 10 km/h (6 mph)

Tank 1/2/3 shut-off is closed

NO Manual emergency shut-off valve (if equipped) is closed

Check with qualified LNG System technician if truck is ready for service

LNG Tank 1/2/3 is empty

NO No LNG fuel in tank Refill LNG tank

Check ECU Next Stop

NO Active fault code stored in ECU

Advise shop of message after return from trip

On Diesel – XXX Seconds Remaining

NO Possible fault in LNG System or no LNG fuel in tank

Engine running on diesel; pull over, wait for gas pressure build up, and call shop/service

* alarm sounds if speed limit is exceeded

3.3 Gas Detection MonitorWestportLNGSystemtrucksareequippedwithnaturalgassensorsmonitoringtwozones:

Table 2—Gas detection zone assignment

Area Sensor LocationCab On A-pillar

Engine bay Mounted on bulkhead

Cab

Engin

e Bay

GASCONCENTRATION:

SilenceEngaged

RelayEngaged

Pushto

Silence

RelayReset

Pushto

Test

Figure 11—Gas detection monitor (if not as shown, refer to OEM supplemental documentation)

18

3.3 Gas Detection Monitor (continued)Twolightscorrespondwitheachzoneonthedisplay:

Table 3—Gas detection interpretation

Light Alarm Meaning ActionOFF NO No gas leak detected None, normal conditions

Yellow (Trace)

NO Indicates a trace gas leak [20–50% of lower explosive limit (LEL)] near corresponding location

Continue to drive

Monitor gas detector for change to alert

Report to shop

Repair leak before next trip

Red (Alert)

YES Indicates significant gas leak [>50% of LEL] near corresponding location

Pull over

Shut off engine and all emergency shut-off valves (if safe to do so)

Notify shop

Do NOT operate truck until repair is done

If “Cab”–exit and do not return to cab. Unroll the window if safe to do so

If “Engine bay”–open hood if safe to do so

Thesensorfaultlightsshowifasensorisnotworkingcorrectly.Itisrecommendedthatthegasdetectionmonitorbetestedduringthepre-tripinspectionbypressingthe[PUSHTOTEST]button.Reportanyproblemstotheshop.

Cab

Engin

e Bay

GASCONCENTRATION:

SilenceEngaged

RelayEngaged

Pushto

Silence

RelayReset

Pushto

Test

Figure 12—Gas detection monitor – [PUSH TO TEST] button


the operation of the gas detection monitor and listen for soundsofaleak.Ifyoudetectsignsofaleak,seeredoryellowlights,hearagasalarm,orcannotseethegreenpowerlightonthedetector,doNOTenteroroperatethe


19

3.4 TurningtheTruckOffWhenyourtripiscomplete,lettheengineidlefor2minutesthen,turnthekeytothe[OFF]position.

YoumaynoticeventingintheVentStackbehindthecab.Itisnormal forthefuelsystemto vent a small amount of gastotheatmosphereaftershutdown.Theventingshouldnotlastmorethan5seconds.Ifventingpersists,notifytheshop.

3.5 Post-Trip InspectionThepost-tripprocedureissimilartothepre-tripinspection.Inparticular:

1. CheckandrecordtheLNGtankpressure.

2. Lookforleaks.

3. EnsureWestportLNGSystemcomponentsaresecurelymounted.

4. Checksecondaryreliefcaponeachtank(seeFigure 8).

5. Itisimportantthatyoucheckthetankpressure.Thetankpressurecouldrise275kPa(40psi)eachdaywhenthetruckisparked(notused).Ifthetankpressureconsistentlyincreasesmorethan275kPa(40psi)perday,reportittotheshop,astheremightbeaproblemwithyourtank.

3.6 Exhaust Aftertreatment ConsiderationsWestportLNGSystemtrucksmaybeequippedwithanOEMintegratedCumminsParticulateFilter,whichhasitsownoperationalandsafetyconsiderations.PleaserefertoOEMdocumentationontheDPFandexhaustaftertreatmentsystemformoreinformation.

WARNING! Regeneration,aspartoftheexhaustaftertreatment

system,cancauseexhaustgasandtheexhaustsystemsurfaces to get hot enough to burn people and ignite or burn common materials. See OEM documentation for

moreinformationonassociatedhazards.

20

3.7 Parking—GeneralandforMaintenance

WARNING! YOU MUST PARK OUTSIDE

Neverallowthetrucktoventorleakinanenclosedspace.Thegaswillriseandcollectinareaswherethere

may be an ignition source. An explosion could result.

Parkingoutsideismandatory.Remember,thetankreliefvalveswillreleaseatapproximately1,600kPa(230psi).Itisnormalforthetankpressuretoriseandautomaticventingtooccurthroughtheventstacks.

Indoorparkingoroperationmaybeallowedprovidedthefacilityisproperlyequippedandthetruckisappropriatelypreparedtopreventanaccumulationofnaturalgasinacombustiblemixture.TruckandfacilitypreparationaredictatedbynationalcodessuchasNFPA30Aandotherlocalrulesandregulations.Alwayscheckwiththeforemantoseeifyourfacilityhastheappropriateequipment.

Neverparkindoorsformaintenancewithoutcompletingathoroughleakinspectionofthetruck.

Ifindoorparkingisrequiredformaintenance,contactyourlocalWestportServicerepresentative(seeAppendix C—Contact Information)todiscussupgradestoyoubuildinganddevelopshopproceduresspecifictoyourfacility.

21

4. Westport LNG System Safety PrecautionsThissectionprovidesinformationaboutthesafeoperationofyourWestportLNGSystemtruck.

4.1 FuelsTheWestportLNGSystemcontainsLNG,highpressurenaturalgasvapor(CNG),lowpressurenaturalgasvapor(tanksonly),anddieselfuel.Thepresenceofthesecompoundsrequiresunderstandingofsafeuseandhandlingofthesematerials.

Thefollowingsectiondescribestheliquidsandgasesyouwillencounterandthestepsyoushouldtaketoensuresafeoperationandhandling.MoreLNGinformation,suchastheMaterialsSafetyDataSheet(MSDS),isinSection 8—LNG Properties and Handling.

4.1.1 Liquefied Natural Gas (LNG)

Description: Storedatapproximately-130°Cto-165°C(-202°Fto-265°F),naturalgaswillnotigniteasaliquidbutwilligniteasvapor.LNGturnsintonaturalgasvaporsoonafterleavingthesystem.Itisclear,odorless,andnon-toxicasaliquidoragas.

WARNING! LNG is a cryogenic (extremely cold) fluid. Avoid

contactwithliquidandplumbing.Freezingburnsandlacerationscouldoccur.WearappropriatePPEwhen

workingaroundtheLNGtankorplumbing.

4.1.2 Natural Gas Vapor and CNG

Description: Flammablewhenmixedwithairandagasconcentrationbetween5–15%.Naturalgasvaporisignitablebystaticdischarge,lighterthanair,odorless,andnon-toxic.Naturalgasisasimpleasphyxiant.CNGishigh-pressurenaturalgasvapor.

WARNING! Neversmokewhilefuelingorexposenaturalgasto

sparksorflames.Naturalgasisflammablewhenmixedwithair.Neverallowtrucktoventinanenclosedspace.

WARNING! Natural gas is lighter than air and can accumulate in enclosedspaces,suchasunderthehoodorunderawnings.Ifthereisanignitionsourceanexplosioncouldresult.Neverallowthetrucktoventinanenclosedspace.Parkingoutsideismandatory.

22

4.1.2 Natural Gas Vapor and CNG (continued)

WARNING! Natural gas is colorless and odorless. You must checktheoperationofthegasdetectionmonitorandlistenforsoundsofaleak.Ifyoudetectsignsofaleak,seeredoryellowlights,hearagasalarm,orcannotseethegreenpowerlightonthedetector,doNOTenteroroperatethetruck.Notifytheshop

fromoutsidethetruck.

WARNING! Do not stay in a natural gas vapor cloud. Natural gas

displaces oxygen and can cause asphyxiation.

WARNING! Naturalgasisflammablewhenmixedwithair,andisignitablebystaticdischarge.Ensuretruckisproperlygroundedduringfueling.Donotsmokeduringfueling.Westportrecommendsnotsmokingwhileoperatinga

WestportLNGSystemtruck.

WARNING! Releaseofhighpressuregascanbreakorpropel

componentswithexplosiveforce.Donotturnvalvesyouareunfamiliarwith.

4.1.3 Diesel

Description: Strawcoloredtodyedliquid,withacharacteristicpetroleumodor.Stableundernormalambientconditionsoftemperatureandpressure.Flammableliquidandvapor.Vaporisheavierthanairandcancauseflashfire.Dieselisknowntocausesevereskinirritationandisanaspirationhazardifswallowed.Canenterlungsandcausedamage.

WARNING! Diesel is flammable in liquid or vapor form. Keep awayfromheat,sparks,flames,staticdischarge,

or other sources of ignition. Vapor may travel considerabledistancestoasourceofignitionwheretheycanignite,flashback,orexplode.Maycreatevapor/airexplosionhazardindoors,inconfined

spaces,outdoors,orinsewers.Vaporsareheavierthanairandcanaccumulateinlowareas.

23

4.2 High Pressure

WARNING! TheWestportLNGSystemcontainshigh-pressuregas,liquid,andcryogenicfluids—evenwhenthetruckis

turnedoff.NounauthorizedoruntrainedpersonshouldEVER attempt maintenance or repairs on a Westport

LNGSystemtruck.Donotturnvalvesyouareunfamiliarwith.Serioushigh-pressureblastorcryogenicburn

injuries could occur.

TheWestportLNGSystemoperatesatpressuresupto33MPa(4,800psi).HighpressureispresentintheLNGtankandmostoftheCNGplumbing,evenaftertheengineisturnedoff.Thesystemisdesignedtosafelyhandlethesehighpressuresandisequippedwithpressuresafetydevices(seeSection 4.3—Pressure Safety Devices).

4.3 Pressure Safety DevicesTheWestportLNGSystemisequippedwithsafetydevices:automatic relief valvesandmanual valves.

4.3.1 Automatic Relief Valves

Table 4—Automatic relief valves and devices

Valve Location FunctionPrimary LNG tank pressure relief valve

Inside the vent manifold (see Figure 13)

If pressure in the tank exceeds 1,600 kPa (230 psi), the valve opens automatically to relieve pressure through the vent stack.

Secondary LNG tank pressure relief valve

Below the LNG pump (see Figure 13)

Backup relief valve in case of primary relief valve failure. Opens at 2,200 kPa (315 psi), and is equipped with blow-off cap which may warn of primary malfunction.

LNG pump pressure relief valve (if equipped)

On the LNG pump (see Figure 13)

Protects the system from over-pressure, relief set at 38 MPa (5,500 psi) and discharges into LNG tank.

Accumulator pressure relief valve

Near the high-pressure gas filter (see Figure 14)

Pressure activated valve—protects the accumulator from over-pressure. Relief is set at 37 MPa (5,400 psi) and discharges externally towards the ground.

Accumulator pressure relief device

On the accumulator manifold (see Figure 14)

Temperature activated device.—protects the accumulator from over-pressure. In the event of fire or heat exceeding 109 °C (228 °F), discharges externally towards the ground.

Diesel pressure relief device

On the FCM inside the engine bay

Protects the engine from diesel over-pressure, returns excess diesel fuel into the diesel tank.

24

Secondary LNG pressure relief valve (set at 2,200 kPa / 315 psi)

inspect presence of cap daily

Figure 13—LNG tank shroud automatic pressure relief valves (other configuration possible)

Primary LNG tank pressure relief valve

(inside vent manifold, set at 1,600 kPa / 230 psi)

LNG pump pressure relief valve (38 MPa / 5,500 psi)

Figure 14—High-pressure accumulator plumbing (other configurations possible)

High-pressure accumulator shut-off

(service only)

Accumulator pressure relief device—relieves at or above

109 °C (228 °F)

Accumulator pressure relief valve (37 MPa / 5,400 psi)

4.3.1 Automatic Relief Valves (continued)

25

4.3.2 Manual Valves

TheLNGtankshroudcontainsasmanyasfourmanualvalvesusedprimarilyduringmaintenanceandserviceofthetruck.Valvesmustbeoperatedonlybytrainedtechniciansandpersonnel.Thefollowingfigureandassociatedtableoutlinethelocationandfunctionofvalveoperation.

Table 5—Manual valves

Valve / Location FunctionManual emergency shut-off valve (if equipped)Red handle at left side of the LNG pump* (see Figure 15)

¼ turn valve. Isolates gas pressure within the tank from the engine bay. Valve must be open for truck to run on natural gas. If closed, warning message “Tank Shut-off Closed” shows on driver display.

Vent-to-station valveBelow and left of LNG pump* (see Figure 15)

Hand turn valve. When open, valve allows vapor to flow from LNG tank through fill hose, and back to the fueling station. Valve is normally closed and should only be open after filling hose or dedicated vent line is secured. WARNING: Vent-to-Station valve must be closed after fueling.

Vent-to-atmosphere valveBelow and right of the LNG pump* (see Figure 15)

Hand turn valve. When open, valve allows flow of vapor from the LNG tank into the atmosphere via the vent stack. The valve is normally closed.

Liquid drain valve (service only)*(see Figure 15)

Hand turn valve (requires special service tool). Drains LNG from the tank for service or maintenance.

High-pressure gas accumulator shut-off valve (service only)(see Figure 14)

¼ turn valve. Isolates high-pressure gas in the accumulator for service or maintenance. To be used only by trained Westport LNG System personnel in conjunction with lock-out procedures.

FCM vent valve (service only)Inside the engine bay located on the FCM

Hand operated valve. Vents FCM pressure for service or maintenance.

* location indicated on tank shroud labelFigure 15—LNG tank shroud manual pressure relief valves (other configurations possible)

Road side tank fill port

Vent-to-station valve

Emergency shut-off valve LNG pump

Vent-to-atmosphere

valve

Liquid drain valve (service only)

LNG tank vapor

pressure gauge

26

4.3.2 Manual Valves (continued)





WARNING!LNG is a cryogenic (extremely cold) fluid. Avoid






CAUTION!The tank vapor pressure could rise 275 kPa (40 psi)

per day when the truck is parked.

4.4 GasLeaksClassificationandResponseItisimportanttoinspectthetruckdaily,asdescribedinSection 2—Pre-Trip Inspection.Youmaydetectaleakbyhearingahissingsound,noticingunusualfrostoriceaccumulation,orbeingalertedbythegasdetectionmonitor.

Responsetogasleaksdependsontheleakclassification.Therearethreeclassificationsofleaks(listedindecreasingseverity).

Severe:

• UncontrolledspillorsprayofLNG

• Aleakwhichresultsinalargevaporcloud

• Anyleakwherethevehicleislocatedinaplacewheregasmayaccumulate

• Anyleakwhereasourceofignitionisincloseproximitytothevehicle

Response:seeSection 4.5—Emergency Response

Significant:

• On-boardgasdetectorisinalertbutnoother“Severe”conditionsaremet

• Detectedgaslevelisgreaterthan50%oftheLowerExplosiveLimit(LEL)


27

Trace:

• On-boardgasdetectorisintracealarm,butnoother“Severe”or“Significant”conditionsaremet

• Detectedgaslevelisbetween20%and50%oftheLEL





4.5 Emergency ResponseDuetothepresenceofLNGandCNGon-board,additionalsafetyprecautionsmustbetakenwhenrespondingtoanemergencyinvolvingaWestportLNGSystemtruck.Westportconsiders(butdoesnotlimit)thefollowingsituationsasemergencies.

Emergency Situations

• Fireon-boardthevehicle

• UncontrolledSeverenaturalgasleak

• AnyothercircumstancerequiringassistancefromEmergencyPersonnel

Emergency Response

Intheeventofanemergency,followstandardsafetypracticestoensureyourownpersonalsafetyandthesafetyofothers,and

1. Findasafespottopullover

2. Turnofftheengine

3. Turnoffmanualemergencyshut-offvalve(ifequipped)andaccumulatorshut-offvalve(ifsafetodoso)

4. CallemergencyrespondersandinformthemthatLNGandCNGareon-board

5. Clearandsecurethelargestpracticalperimeter

6. Informshop/dispatch

SeeSection 8.4 – Sample LNG MSDS,formoreinformationonemergencymeasureswithrespecttoLNG.IfyouhaveanyfurtherquestionsorconcernspleasecontactWestportService(seeAppendix C—Contact Information).

28

5. Safe LNG Truck FuelingWARNING!

The following procedure is a guideline only and does not replace proper training. Due to the variety of fueling stations, you MUST receive training to your specific LNG

fueling station.

FuelingofLNGtrucksishighlycontrolledandthereforequitesafe.LNGstationstypicallyhavemoresafetyfeaturesthanotherfuelfillingstations.Thefollowingprecautionsminimizeharmintheeventofasafetyincident.Followtheprocedurestoensurethatthesafetyofthefuelingprocessismaintained.

5.1 LNG Fueling Safety EquipmentBelowisarecommendedlistoftheminimumpersonalprotectiveequipment(PPE)requiredforLNGfueling.ItisrecommendedthatthisequipmentiscarriedonboardaWestportLNGSystemtruckatalltimes.Checkwithyourfleetand/orLNGproviderastheymayhaveadditionalrequirements.

5.1.1 Recommended Personal Protective Equipment (PPE)

• Fullfaceshield

• Heavyleathergloveswithlongcuffs(weldingorsimilarthicknesswithcuffstothemid-forearm)

• Fire-retardantraincoat

• Longpantsortrousers

• Closedtoeleathershoesorboots

Notethattheseareminimumrecommendations.Yourfuelingstationorfleetmayhavetheirownrequirements.

5.1.2 TruckEquipment

• ABC-ratedMultipurposeDryChemicalfireextinguisher—2.3kg(5lbs)minimum*

• Emergencytrianglesorcones

• Flashlight(forpre-andpost-tripinspections)

*FormoreinformationonextinguishingfiresandotheremergenciesinvolvingLNGseeSection 8.4 – Sample LNG MSDS.

29

5.2 LNG Fueling BasicsLNGfuelingreliesonthetransferofnaturalgasinliquidform.BecauseLNGispressurizedandcontainedinaclosedtanksystem,youcannotphysicallycheckthelevelofLNG,(suchaslookingthroughthefillopeningofadieseltank).YoumustrelyontheWestportLNGSystemMonitorfuelgaugeandthestationdispensertoestimatetheamountofLNGpresentinyourtank.

Astheliquidpassesthroughthefuelinghoseandintothetank,someoftheliquidwarmsandconvertstovapor.ThisstatechangefromliquidtogasincreasesthevaporpressureinsidetheLNGtank.Thetankpressuregaugeindicatesthisvaporpressureanddoes notindicatetheamountofliquidinsidethetank.TheWestportLNGSystemreliesonlyontheliquidnaturalgas,notthevapor,unlikeothernaturalgasenginetechnologies.

WithvaryingLNGtankpressure,thefuelingprocedurecanchangeanddependslargelyonstationtypeandfuelcondition(temperatureandpressure).ThebasicrulesofLNGfuelingareconsistent.Detailedfuelingproceduresspecifictoyoursystemplumbing(suchasasingleversusmultipletanksystems),aswellastheparticularLNGstationusedatyournormalfuelinglocation,iscoveredinyourfuelingtraining.Thefollowingarebasicrules,whichmakefuelingeasierandshortenyourtimeatthepump.

Basic Rules for LNG Fueling:

1. Stay safe!

• Followstationandtrucksafetyrulesandinspectyourequipmentbeforeuse.

• BefamiliarwiththeEmergencyShut-Down(ESD)buttonsincaseofanemergency.

• WearyourPPEandgroundthevehiclewithastationgroundingcable.

• Parkthetruckwithparkingbrake[ON],engineoff,andkeyinthe[OFF]position.

• Checkthattherearenoignitionsourcesnearby(openflame,smoking,runningengines,etc.).

WARNING! Naturalgasvaporisflammablewhenmixedwithair,andisignitablebystaticdischarge.Ensuretruckisproperlygroundedduringfueling.Donotsmokeduringfueling.WestportrecommendsnotsmokingwhileoperatingaWestportLNGSystemtruck.

30

5.2 LNG Fueling Basics (continued)Basic Rules for LNG Fueling (continued):

2. Vehicle LNG tank pressure must be less than station output pressure.

• Pressurecontrolisnotalwayspossible,asitdependsonfrequencyoftruckuseandfuelcondition.Factorssuchasplanningyourfuelingandventingbacktostationcanhelpwithpressurecontrol(seeSection 5.7—Minimizing Venting and Fuel Loss).

• Youcanstillfuelifthetankpressureexceedsthestationpressurebecausethestationisequippedwithapump,whichforcestheLNGintothetank;howeverthefillingprocessmaytakelongertocomplete.

• Minimizeventingtoatmosphere,asthisactionreleasesmethanegaswhichisharmfultotheatmosphere.

3. Use compressed air to dry the fueling hose and LNG tank receptacle.

• Moistureinsidethenozzleandfuelingreceptaclescancausefuelingcomponentsandvalvestofreeze.

• LNGmaysprayduringfuelingasaresultofpoorcomponentfitandoperation.

• Frozenmoistureinthenozzleandfuelreceptaclecancausedisconnectionproblemspost-fueling.(seeSection 7—Diagnostics and Troubleshootingformoreinformation)

4. Cool down your LNG fueling hose prior to filling.

• ColdLNGstationplumbingcangreatlyimproveyourfill,byavoidingtherapidstatechangethathappenswhencoldLNGpassesthroughawarmhose.

• Usetankvent-to-stationvalve,ifventingbacktothestation,asitaidsincoolingthefillhose(Section 5.6.1—Venting to Station outlinesthisprocedure).

5. Know your truck.

• Basedonyoursupervisedfillsandtraining,knowhowmuchfuelyoushouldbetakingonboard.

• RefertotanksizechartinSection 6.2.8—Usable LNG Tank SizestodeterminethemaximumamountofLNGatankcanhold.

Remember!The reading on the LNG tank pressure gauge has

NO correlation to amount of fuel in the tank.

5.3 Incident ReactionYoumusthaveproperLNGfuelingtrainingtooperateanyLNGrefuelingstation.Trainingincludesinstructionsonwhattodoifthereisanemergencyoranincident.FollowthestepsoutlinedinyourspecificLNGEmergencyResponsePlan.Ifyouneedmoreinformation,contactyourlocalLNGstationrepresentative.

31

5.4 Pre-FuelingYoumusthaveproperLNGfuelingtrainingspecifictoyourLNGstation.ThistrainingdetailsthespecificprocesstofollowbeforefuelinganLNGtank.Usethefollowingpointsasaguidelinebeforefuelingyourtruck:

1. Verifythatanescaperouteisclearandunlockedforallfuelingpersonnel.

2. VerifylocationandreadinessofESDsandtheEmergencyPhone.

3. Inspectsafetyequipmentfordamage,readiness,andfit(fireextinguisherandPPE).

4. Visuallyinspectstationandtruckfuelsystempipingforleaksandbringanyleakstotheattentionofthestationprovider.

5. Neverleaveavalveopenandunattended.

6. Notifysitepersonnelifrequired.

5.5 LNG Fueling

WARNING!The following procedure is a guideline only and does

not replace proper training. Due to the variety of fueling stations, you MUST receive training to your specific LNG

fueling station.

1. Parkthetruckintheproperpositionforfueling.Thetransferhoseandgroundcablemustreachthetruckorremotefillpanel(ifequipped)withoutstretching.

2. Setthetruckbrakesandmakesurethetruckisoutofgear.

3. Turnofftheignition.

4. Recordnecessarydatainthefuelinglogbookandthetrucklogbook.

5. PutonyourPPE.EnsurethatanyoneassistingyoualsowearsPPE.

6. AttachgroundclamptotheLNGtankorremotefillpanelifequipped(seeFigure 16—LNG Tank ground clamp attachmentandFigure 17—Remote Fill Panel attachments).

7. Ifyouarefuelingatankthathasbeenemptiedforservicereasons,getanyspecialinstructionsfromaWestportLNGSystemtrainedtechnician.

8. Inspect,clean,anddrythefuelnozzle.Usepressurizedairtoremovedirtandicefromnozzleface.

9. Doanynecessaryventingoffueltanks(seeSection 5.6—Ventingformoredetails).

10.Closeventvalves.

11.RemovecaponLNGtankorremotefillpanel(ifequipped).Inspect,clean,anddryfuelconnector.Usepressurizedairtoremovedirtandicefromconnectorface.

12.ConnectfuelingnozzletoLNGtankorremotefillpanel(ifequipped).

13.Startfuelingbypressingthestation[START]button.

32

5.5 LNG Fueling (continued)14.Thestationshouldstoponcethetankisfull.Confirm

thetankisfullbycheckingtheWestportLNGSystemMonitorwiththekeyinthe[ON]position.

15.CarefullydisconnectthefuelnozzleandinstallthedustcaponthefillhoseandLNGtankorremotefillpanel(ifequipped).

16.Returnhoseandgroundclamptothefillingstation.

17.Finishrecordingnecessarydatainthefuelinglogbookandthetrucklogbook.

18.Removeandstowallsafetyequipment,beingcarefultobrushanyiceoffoftheglovesbeforeremovingthemfromyourhands.


Ground lug

Figure 16—LNG tank ground clamp attachment

Ground lug

Vent line receptacle

Figure 17—Remote fill panel attachments (if equipped)

33

5.6 VentingAllLNGtanksmustventatsomepointtobeabletorefuel.LNGhasaverylowboilingpointof-130°Cto-165°C(-202°Fto-265°F)atatmosphericpressureandmustbestoredatverylowtemperatures.LNGisreferredtoasacryogenicliquid.Theboilingpointreferstoatemperatureatwhichasubstancechangesfromaliquidtoagas.Forwaterthisisabout100°C(212°F)atatmosphericpressure.LNGisconstantlychangingtoavaporastemperatureandpressureincreaseinsidethetank.

Eachtankisequippedwithapressuregaugewhichreadsthisvaporpressure.The LNG tank gauge does not indicate liquid level, only vapor pressure.Eachtankisalsoequippedwithapressurereliefvalve(seeSection 4.3.1—Automatic Relief Valves)whichrelievesat1,600kPa(230psi).Themaximumpressureforfuelingdependsoneachstation,butgenerallyshouldnotexceed1,200kPa(180psi).Followingaregeneralventingguidelines.

5.6.1 Venting to Station

Thepreferredventingmethodistousethevent-to-stationvalve.ThisvalveusestheLNGstationfilllineoradedicatedstationventlinetoreturntheexcessvaporbacktothestation.Thevent-to-stationvalveonlyworksiftheLNGfuelinghoseisattached;orifusingtheremotefillpanel,ifthededicatedventlineisattached.Youcannotfuelwhileventing.ThismethodworksonlyifthestationpressureislessthantheLNGtankpressure.Thefollowingstepsareguidelinesonly;youmustreceivepropertrainingforyourspecificstation.

1. CompleteSection 5.4—Pre-Fueling.

2. Completesteps1through8ofSection 5.5—LNG Fueling.

3a. Iftruckisequippedwitharemotefillpanel,attachdedicatedstationventlinetotheventreceptacleontheremotefillpanel.

3b. Iftruckisnotequippedwitharemotefillpanel,inspectandcleanthefuelnozzleandLNGtankreceptaclewithpressurizedair.ConnectthefuelnozzletotheLNGtank.

4. Openthevent-to-stationvalve(see Figure 18–Tank shroud labels).Youshouldhearthevaporventingthroughthefillhose/dedicatedventlineandseethehosebegintofrost.Donottouchfrostyhoseswithbarehands.

5. Monitorthetankpressureandwaituntilitdropstothedesiredlevel(LNGtankshouldequalizewiththeLNGstation).

34

5.6.1 Venting to Station (continued)

6. Closethevent-to-stationvalve.

7. Iftruckisequippedwitharemotefillpanel,disconnectdedicatedventlineandreturnittothestation.

8. ContinuewithStep10ofSection 5.5—LNG Fueling.


WARNING! Vent-to-station valve must be closed before fueling.

5.6.2 Venting to Atmosphere

Ventingtoatmosphereshouldonlybeperformedoutsideandonlywhenventingtostationisnotpossible.Ventingtoatmospherereleasesmethanewhichisharmfultotheenvironmentandpromotesfuelloss.UsethismethodifthestationpressureexceedstheLNGtankpressure.Thefollowingstepsareonlyaguideline,youmustreceivepropertrainingforyourspecificstation.

1. CompleteSection 5.4—Pre-Fueling.

2. CompleteSteps1though8ofSection 5.5— LNG Fueling.

3. Openthevent-to-atmospherevalve(see Figure 18–Tank shroud labels).Youshouldhearthevaporventingthroughtheventstackbehindthecab.

4. Monitorthetankpressureandwaituntilitdropstothedesiredlevel.

5. Closethevent-to-atmospherevalve.

6. ContinuewithStep10ofSection 5.5—LNG Fueling.


WARNING! Vent-to-atmosphere valve

must be closed before fueling.

35

VENTTO

ATM

VENTTO

STN

LIQUIDDRAIN

EMERGENCY SHUT-OFF VALVEClose ¼ turn tostop fuel flowto engine.

VENT TO STATIONNormally closed. Open to vent vapour through fill or vent connection.

VENT TO ATMOSPHERE

Normally closed. Open to vent vapour through

vehicle vent stack.

LIQUID DRAINService valve ONLY. Do

not operate without proper instruction /

service training.

Figure 18a—Tank shroud label (manual shut-off valve equipped) Figure 18b—Tank shroud label (automatic shut-off valve equipped)

36

5.7 MinimizingVentingandFuelLossMinimizingventingandfuellossisanimportantpartofoperatingyourWestportLNGSystemtruck.Withsomebasicguidelines,youcanreducefuellossandimprovethefuelingprocess.ContactyourlocalWestportServicerepresentativeifyouhavequestions(seeAppendix C—Contact Information).

Somegeneralsuggestionstominimizeventinginclude:

• Fuelingrightbeforeashift,ratherthanthenightbefore.ThisminimizesthepressurebuildupfromLNGboil-offandkeepstheLNGcolderforlongerperiodsoftime.

• Ifventingmustoccur,useventingbacktostationratherthantoatmosphere.Ventingbacktostationwillre-collapsesomeofthevaporinsidethestation.Ventingtoatmospherereleaseslargeamountsofmethanegas,whichisharmfultotheenvironmentandpromotesfuelloss.

• UseyourWestportLNGSystemtruckasmuchaspossible.Runninglongertripswithfrequentrefuelingeventscanhelpmanagevaporinsidethetankandminimizeventingandfuelloss.

WARNING!LNG is a cryogenic (extremely cold) fluid. Avoid






37

6. Westport LNG System Maintenance and CareWARNING!

The Westport LNG System contains high-pressure gas, liquid, and cryogenic fluids—even when the truck is turned

off. No unauthorized or untrained person should EVER attempt maintenance or repairs on a Westport LNG System truck. Do not turn valves you are unfamiliar with. Serious high-pressure blast or cryogenic burn injuries could occur.

6.1 Maintenance SchedulesThefollowingmaintenancetasksarerequiredtoensurethewarrantedperformanceoftheWestportLNGsystem.

ThesemaintenancetasksandschedulesareONLYfortheWestportLNGSystemanddonotreplacethemaintenancetasksrequiredbytheoriginalequipmentmanufacturer(OEM).PleaseseeOEMdocumentationforadditionalmaintenanceitemssuchasdaily/refuelingchecks,coolantflushes,hydraulicfluidchangeintervals,etc.

Exceptfordaily/refuelingchecks,allotherperiodicmaintenancemustbeperformedbyqualifiedWestportLNGSystemtechniciansonly.DetailedworkinstructionsforallchecksandservicingareavailablethroughWestportServiceEngineering(seeAppendix C—Contact Information).Thesepagescanbeduplicated.

CAUTION!The use of fluids other than those approved by

Westport Service for use in the Westport LNG System may void the system warranty.

Daily or Upon RefuelingCheck operator’s report

Engine check

Drain all diesel fuel-water separators engine bay

Check all engine drive belts

Drain vent stack filter, if so equipped

Fluid check Check engine oil, engine coolant & hydraulic fluid levels

Check vehicle for diesel, hydraulic & coolant leaks

Check hydraulic oil cooler for debris and/or damage

Westport LNG System

check

Check Westport LNG System for loose or damaged components

Check Westport LNG System for gas or diesel leak(s)

Check Westport LNG System for excessive frost

Check gas detection monitor—alarms and lights

Check LNG fuel level, tank pressure & tank valve positions

38

Every 4 months

Conduct gas detection system function test

Every 12 months, 1,000 hours,

or 50,000 km (31,250 miles), whichever comes first

Conduct detailed gas leak check

Conduct detailed diesel leak check

Replace primary (low pressure) diesel filter

Inspect high-pressure gas accumulator

Conduct LNG tank visual inspection

Drain vent stack filter, if so equipped

Every 4,000 hours


Inspect all fluid hoses for leaks and deterioration

Replace hydraulic spin-on filter, if equipped

Replace high-pressure natural gas filter

Replace high-pressure (secondary) diesel filter

Replace diesel pump drive belt

Replace dosing pump filter, if equipped

Replace vent stack filter, if equipped

6.1 Maintenance Schedules (continued)

ThemaintenanceschedulescontainedonthesepagesaresubjecttochangebyWestport.

ContactWestportService(seeAppendix C—Contact Information)todetermineifthereisauniquemaintenancescheduleforyourapplication.

39

Every 4,000 hours


Replace LNG pump (single tank system)

Every 8,000 hours


Replace LNG pump (dual tank system)

Replace gas regulator (DLSR)

Replace high-pressure diesel pump

Replace diesel drain solenoid and diesel PRV

Every 5 years, 10,000 hours,

800,000 km (500,000 miles), whichever comes first

Replace natural gas pressure relief devices

Additional Recommended MaintenanceWestportrecommendsthemaintenancedescribedpreviouslydescribedbeperformedbeyondthewarrantyperiodandthroughoutthevehicle’slifetoensurepropersystemoperation.Inaddition,Westportrecommendsthefollowingmaintenancetominimizeunplanneddowntime.

40

6.1.1 Natural Gas Code Required Maintenance

The owner is responsibleforensuringtheirvehicleremainscompliantwithcodesregardingtheuseofnaturalgasinvehicles.

ToensurethatyourWestportLNGSystemtruckremainscompliantwithregulatorycodesoutlinedforNaturalGasVehicles,thefollowingtwochecksneedtobedone.

1. Thegasdetectionsystemneedstobefunctionallytested.SeeWestport Work Instruction INS-10011605 Gas Detection System Function Test.

2. Thehigh-pressureaccumulatormustbeinspectedbyqualifiedpersonnel.SeeWestport Work Instruction INS-10009895 Accumulator and Pressure Relief Device Detailed Visual Inspection.

ThesecheckshavebeenincludedintheWestportLNGSystemMaintenanceSchedule.PleaseseethelistedWestportWorkInstructions(availableontheWestportServiceWebsiteathttp://service.westport.com)fordetailsontheseinspectionsandtests.IfyouhaveanyquestionsregardingcodecomplianceofyourvehiclecontactWestportService(seeAppendixC—ContactInformation).

6.1.2 Oil Drain Intervals

• FollowoildrainintervalSevereDutyifyourvehicleoperatesundereitherconditionlistedunderSevereDuty.

• FollowoildrainintervalNormalDutyifyourvehicleoperatesundereitherconditionlistedunderNormalDutyanddoesnotmeetanyconditionsunderSevereDuty.

• FollowoildrainintervalLightDutyifyourvehicleoperatesunderbothconditionslistedunderLightDutyanddoesnotmeetanyconditionsunderSevereDutyorunderNormalDuty.

Table 6—Oil drain intervals

Oil Classification

Severe Duty Normal Duty Light Duty

< 2.3 km/l (5.5 mpg) or 36,287 kg (80,000 lb)

GVW

2.3–2.8 km/l (5.5–6.5 mpg) or 36,287 kg (80,000 lb)

GVW

2.9 km/l (6.7 mpg) or < 31,751 kg (70,000 lb)

GVW

CES 20081(1)(2) 24,000 km (15,000 mi)

40,000 km (25,000 mi)

56,000 km (35,000 mi)

CES 20078(1)(2) 32,000 km (20,000 mi)

48,000 km (30,000 mi)

64,000 km (40,000 mi)

(1) The use of Centinel™ or any type of oil blending is prohibited. The use of a high-quality filter is mandatory. Refer to OEM documentation for filter part numbers.

(2) Engines equipped with an integrated Cummins Particulate Filter MUST operate on ultra-low sulfur diesel (15 ppm sulfur) fuel.

41

6.2 Recommended Fluids and Capacities6.2.1 LNG Composition Specifications

TheWestportLNGSystemiscertifiedforoperationwithCaliforniaAirResourceBoard(CARB)specificationnaturalgas.Theprimaryrequirementsonnaturalgascompositionareasbelow:

• C1—Methane(minimum): 90%

• C2—Ethane(maximum): 4%

• C3andhigherhydrocarbons(maximum): 2%

• C6andhigherhydrocarbons(maximum): 0%

• Oxygen(maximum): 0%

• inerts—CO2plusN2(maximum): 4%

WestportrecognizesthatLNGcompositionwillvarydependingonthesourceandsupplymethod.Ifyourfueldoesnotmeettheabovespecification,contactWestporttodiscuss.

6.2.2 LNG Cleanliness Specifications

LNGdeliveredtotheLNGtankshouldbefilteredto5micronsnominal,10micronsabsolute.LNGtankfuelingreceptaclesmustbedriedwithcompressedairpriortofuelingtoavoidfreezingandcontaminationofthesystem.

6.2.3 Lubricating Oil Specifications

WestportrecommendsfollowingstandardCumminsoiltypes,usuallytheuseofahigh-quality15W-40multiviscosityheavy-dutyengineoilthatmeetstherequirementsofCumminsEngineeringSpecificationCES20081/CJ-4orCES20078/CI-4.Special“break-in”enginelubricatingoilsarenotrecommendedforWestportLNGSystemengines.

42

6.2.4 Coolant Specifications

Westportrecommendsusingeithera50/50mixtureofgoodqualitywaterandfullyformulatedantifreeze,ora50/50premixedcoolant.Thefullyformulatedantifreezeorpremixedcoolantusedmustmeetbaseenginecoolantspecifications.Seebaseenginedocumentationforcoolanttestingand/orchangeintervals.TheapproximateextracapacityrequiredbytheWestportLNGSystemoverthebaseengineisapproximately:

• 3.37L(0.89U.S.gallons)forasingletanksystem,

• 5.52L(1.46U.S.gallons)foradualtanksystem,and

• 7.05L(1.87U.S.gallons)foratripletanksystem.

WARNING! Do not remove the pressure cap from a hot engine. Waituntilcoolanttemperatureisbelow50ºC(120°F)before removing the pressure cap. Heated coolant

spray or steam can cause personal injury.

CAUTION!Damage to the Westport LNG System can occur if

coolant mixture is incorrect. Ensure coolant mixture contains approved antifreeze.

6.2.5 LNG Pump / Steering Fluid Specifications

Inmanyapplications,Westportusesthepower-steeringassistreservoirandcircuittoprovidehydraulicfluidtothesystem’sLNGpump(s).WestportrequiresthatATF Dexron IIIoilisusedastheworkingfluidfortheLNGpump.Thehydrauliccircuitfluidcapacityisapproximately:

• 14L(3.7U.S.gallons)forasingletanksystem,

• 16L(4.2U.S.gallons)foradualtanksystem,and

• 22L(5.7U.S.gallons)forathreetanksystem

inadditiontothebaseenginefluidcapacity.

6.2.6 Diesel Fuel Specification

TheWestportLNGSystemusesnaturalgasastheprimaryfuelalongwithdieselasanignitionsourceor“liquidsparkplug”.Theamountofdieselinjectedintothecylindervaries,withagreaterpercentageusedatidle.

TrucksmaybeequippedwithanintegratedCumminsParticulateFilter.IfthetruckhasanintegratedCumminsParticulateFilter,ultra-lowsulfurdieselfuelmustbeused.SulfurcontentofthedieselfuelcanNOTexceed15ppm.

TheWestportpositionontheuseofbiodieselisdescribedinthefollowingsection.

WARNING!Seriousenginedamageandwarrantynon-compliance

can result by the use of incorrect diesel fuel.

43

WARNING!Fuelmustbekeptfreeofdirtandwater.Dirtandwater

can cause severe damage to the fuel system.

CAUTION!Do not use diesel fuel blended with lubricating oil in

engines equipped with an integrated Cummins Particulate Filter.

6.2.7 Biodiesel Fuel Use in the LNG System

WestportdoesNOTrecommendorendorsetheuseofbiodieselfuelintheWestportLNGSystem.

Currentlytherearenofirmindustrystandardsonthecontentandpropertiesofbiodieselfuels.Whiledieselisonlyusedinasmallportionofthecombustionprocess,thecombustioncharacteristicsofthedieselfuelarecriticalforwarrantedengineperformance.WestportcertifiesitsengineusingtheprescribedEPACertificationFuels.Westportdoesnotcertifyenginesonanyotherfuel.

CARBcurrentlydoesnotcertifyanybiodieselfuelsforuseinCalifornia.Emissionwarrantiesarevoidedwiththeuseofnoncompliantfuels.

WARNING!Failures or damage to the Westport LNG System

(including the Westport GX engine and LNG storage and delivery system) caused by fuels not certified for use in theWestportLNGSystemareNOTwarrantablefailuresandwillNOTbecoveredundertheWestportWarranties.

6.2.8 UsableLNGTankSizes

ThefollowingtableoutlinestheusableLNGvolumethatcanbeexpectedfromthevarioussizesoftheLNGtanks.AllWestportLNGtankshaveadataplateaffixedtothetankthatclearlystatesthetankwaterequivalentvolume.TheusablevolumeofthetankissmallerthantheproductiontanksizeduetoasafetyullagespaceandthemaximumsuctionleveloftheLNGpump.

Table 7—LNG tank volumes

Production Tank Size Approximate Usable Volumes265 L (70 U.S. gallons) 208 L (55 U.S. gallons)

380 L (100 U.S. gallons) 288 L (76 U.S. gallons)

455 L (120 U.S. gallons) 356 L (94 U.S. gallons)

44

6.3 Fuel WeatheringWhenevertheLNGfueltankisventedtotheatmosphere,thelightgasesarereleased(methaneandnitrogen)andtheheavygases(ethaneandpropane)areleftbehind.Whenthisoccursrepeatedly,theconcentrationofheavygasesincreases.ThisiscalledLNGweathering.Althoughweatheringcancausechangesinthespecificationofthefuelinthetank,ithaslittleeffectontheWestportLNGSystem,asliquidfuelisdrawnfromthebottomoftheLNGtank.Asaresult,LNGfuelweatheringisnotaconcerntothetruckoperator.

6.4 Running on Diesel (ROD) OperationWestportLNGSystemequippedtruckshavetheabilitytostartandrunondieselinlimpmode.Thisprovidesaconvenientwaytostarttheenginewhenthereisnohigh-pressuregasonboard(forexample,afterservice)whilesystempressureisre-establishedwiththeLNGpump.TheRODmodemayormaynotbesufficienttogetthetruckofftheroadinanemergencysituation.

Themodeisautomaticandrequiresnointeractionfromtheoperator.There is a significant power deficit,withonlyabout10%poweravailable.Neverusethismodetodrivethetruckoverroadsorhighways,ortopullaload.Continuousoperationondieselcandamagetheoxidationcatalyst.

IfyourtruckgoesintoRODoperationduringnormaldrivingyoushould:

1. Findasafespotandpullofftheroad;

2. IdletruckforafewminutesuntiltheRODmessageclears;and

3. Reporttoshopaftertripcompletion.

IfyoucannotbringyourtruckoutofRODmode,youmaybeoutoffuelortheremaybeaproblemwithyoursystem.ShutoffthetruckandcontactWestportService(seeAppendix C—Contact Information)oryourlocalshopforassistance.

AfteranextendedRODevent(5min.orlonger)itisgoodpracticetochecktheventstackfilter(seeFigure 6).Ifthereisdieselinthefilter,drainanddisposeofthedieselfuelinaccordancewithlocalrulesandregulations.

6.5 MinimizingTankContaminationTheWestportLNGSystemandfuelingstationisalwayspressurizedsoitisdifficulttocontaminatethefuel.Onecontaminationpossibilitycomesfrommoistureordirtonthefillingnozzle.Itisimportanttocleanthenozzlewithpressurizedairbetweeneachfueling.

45

7. Diagnostics and TroubleshootingYourWestportLNGSystemtruckisequippedwiththeWestportLNGSystemMonitor,whichprovidesinformationaboutthestatusoftheLNGSystem.IfafaultoccurswiththeWestportLNGSystem,anon-screenoperatormessageisdisplayed.Formoreinformationaboutthemessages,refertoSection 3.2—Westport LNG System Monitor.

YourtruckisequippedwithLNGSystemfaultcodes,whichcanberetrievedfromtheon-boardcomputerbyatrainedtechnician.ThiscapabilityallowsamoreaccurateandtimelyrepairtimeofyourWestportLNGSystemtruck.AfulllistoftroubleshootingcodesandserviceproceduresisavailableforqualifiedWestportLNGSystemtechnicians.

7.1 FrozenValvesBecauseLNGisextremelycold,mostofthetankplumbinggetsverycoldduringfueling.Theamountoffrostdependsonmoisturecontentintheairaswellastheamountofdewonthetankplumbing.Thefrostingcansometimescausehandoperatedvalvestobecomedifficulttoturnorfreezeinoneposition.Thiscanbeaninconveniencebutitdoesnotnecessarilyindicateafaultyvalve.Beforereportingafrozenvalvetoashop,tryto:

• Letthevalvethawnaturallyinambienttemperatureair;

• Dryoffvalveswithcompressedair(availableatanyLNGstation)priortofueling;or

• Ifavailable,usewater(hotorcold)andpourdirectlyontothevalvebody.

Never:

• Heatvalveswithanyopenflameorheatgun;

• Hitvalveswithobjectssuchasahammer;

• Forcevalvesopenorclosed—theymaybreak;or

• Usepliersorothertoolsonhandvalves.

46

7.2 LeakatTankFuelReceptacleLeaksatthetankfuelreceptacleusuallyoccurifthesealonthestationreceptaclehasbeendamagedoriscoveredwithice.Onewaytopreventiceordebrisbuild-upistodryofftheinsideofthefuelingreceptacle(onboththetruckandtheLNGstation)usingcompressedair.Alwaysinspectthetrucknozzleaswellasthestationreceptaclebeforeuse,andreportanydamageortamperingtotheshop.

7.3 Excessive “Please Wait…” Message TimeIfyouarestartingacoldenginewherethecoolanthasnotsufficientlywarmed,youwillseethe“PleaseWait…”messagedisplayedonthedriver’sdisplay.Thisusuallyindicatesthatthecoolanttemperatureisnothighenoughtowarmthehigh-pressuregasatthepumpandassuch,theLNGpumpistypicallydisabled(Xthroughthegaspumpicon)becauseitistoocoldtooperate(“snowflake”belowgaspumpicon).

Thismessageisalsodisplayedifthehigh-pressureaccumulatorisnotfullycharged.Youcanmovethetruckaslongasyoudonotexceed10km/h(6mph)(withoutload).Analarmwillsoundifthespeedlimitisexceeded.Youcanspeeduptheenginewarm-uptimebyusingthecruisecontroltosettheengineonhighidle.Alwayscheckyourcoolantlevelduringyourpre-andpost-tripinspectionstoensureproperWestportLNGSystemoperation.

7.4 Crank,ButNoStartConditionIfyouexperienceaconditioninwhichyoucranktheenginebutitfailstofireafterashorttime(about5seconds),itcanlikelyberesetwiththefollowingprocedure:

1. Turnignitiontothe[OFF]positionandtakeoutthekey.

2. WaituntiltheWestportLNGSystemMonitorpowersdown.This wait time is very important.Evenaftercompletekey-off,thereisstillpowerstoredintheon-boardcomputerwhichdissipatesafteraboutaminute.

3. Insertkeyandturnignitionto[START];theengineshouldfirewithin5seconds.

Ifyoufollowthisprocedureandthetruckisstillnotstarting,contactyourWestportServicerepresentative(seeAppendix C—Contact Information)orshop—theremightbeanotherproblem.Ifthisproblempersists,advisetheshop.

47

7.5 DifficultyFuelingwithLNGMostfuelingdifficultiesarisefromtheLNGtankpressurebeingtoohighorfromthestationfuelingequipment,suchashosesandreceptaclebeingtoowarm.Section 5.2—LNG Fueling Basicsoutlinesthegeneralguidelinesforeasyandsuccessfulfuelingprocedures.Remember:Youmusthaveproperfuelingtrainingonthespecificstationyouareusing.

7.6 JumpStartingyourLNGTruckIfyouneedtojumpstartyourLNGtrucktheon-boardgasdetectorwillbedisabledandunabletodetectanaturalgasleak.

Remembernaturalgasvaporiscolorless,hasnosmell,canaccumulateunderhoods/awningsandcanbeignitedbysparkorstaticdischarge.

Notifyyourshoptoreceivefurtherinstructions.

7.7 SweatyLNGTank/LowFuelEfficiencyTheWestportLNGSystemusesLNGastheprimaryfuelsource,whichmustbekeptatcryogenictemperatures.Tokeepthefuelcold,LNGtanksareinsulatedwithavacuumlayer.

Ifyouconsistentlynoticeexcessivecondensationor“sweat”onyourLNGtanks,yourtankvacuummayhavedegraded.

ApoorLNGtankvacuumcanalsobedetectedbyalossoffuelefficiencyand/ortheLNGtankpressurebuildsfasterthannormal.

Itisimportanttorecordtankpressures,andnoteLNGtankconditionaspartofyourpreandposttripinspections.Thesecheckshelpyoutounderstandwhatisnormalforyourvehicle.

ContactWestportService(seeAppendix C—Contact Information)ifyoususpectapoorLNGtankvacuum.

48

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49

8. LNG Properties and HandlingTheprimaryfueloftheWestportLNGSystemisLNG.Asacryogenicliquidwithflammablevapor,ithassomeparticularcharacteristicsandsafetyhazards.

8.1 Physical PropertiesLNGisaclearliquidthatislessdensethanwater.Itwillcauseseverefrostburnsifallowedtocontactskin.Itdoesnotsmellandboilsbetween-130°Cand-165°C(-202°Fand-265°F).Naturalgaswillriseanddisperseinaironceithasvaporized.Whenmixedwithairinconcentrationof5–15%,naturalgasisflammableandcanbeignitedbystaticdischarge.

8.2 SafetyHazards

WARNING! LNG is a cryogenic (extremely cold) fluid. Avoid


workingaroundtheLNGtankorplumbing

WARNING! Natural gas is lighter than air and can accumulate in enclosedspaces,suchasunderthehoodorunderawnings.Ifthereisanignitionsourceanexplosioncouldresult.Neverallowthetrucktoventinan

enclosed space. PARKING OUTSIDE IS MANDATORY.




WARNING! Do not stay in a natural gas vapor cloud. Natural gas

displaces oxygen and can cause asphyxiation.

WARNING! Naturalgasisflammablewhenmixedwithair,andisignitablebystaticdischarge.Ensuretruckisproperlygroundedduringfueling.Donotsmokeduringfueling.Westportrecommendsnotsmokingwhileoperatinga

WestportLNGSystemtruck.

WARNING! Contain liquid spills as best as possible to prevent the liquidorgasfromenteringthesewage/stormdrainsystem.Keeptheresultingvaporcloudawayfrom

buildings or ventilation systems.

50

8.3 First AidIfLNGcausesburnsontheskin:

• Removeanyclothingthatmayrestrictcirculationtothefrozenarea.Donotrubfrozenparts,astissuedamagemayresult.Obtainmedicalassistanceassoonaspossible.

• Whenpractical,placetheaffectedpartofthebodyinaslightlywarmbath.Thawingmayrequire15to60minutesandshouldbecontinueduntilthepaleblueoftheskinturnspink.

• Iffrozentissuehasthawedbeforemedicalattentionhasbeenadministered,covertheareawithdrysteriledressingandalarge,bulkyprotectivecovering.

8.4 Sample LNG MSDS

MATERIAL SAFETY DATA SHEET LIQUEFIED NATURAL GAS (MSDS #582)

Revision Date: April 7, 2008Supersedes Date: February 20, 2004

Section 1 – PRODUCT AND COMPANY IDENTIFICATION

Terasen Gas Inc. Company Phone: (604) 592-7629 16705 Fraser Highway Emergency Phone: (604) 946-4818 Surrey, BC V3S 2X7 Canada

Product Name: Liquefied Natural Gas

Material Use: Various

Manufacturer: Terasen Gas LNG Plant Supplier: Terasen Gas LNG Plant 7651 Hopcott Rd 7651 Hopcott Rd Delta, BC V4G 1B7 Delta, BC V4G 1B7 Canada Canada

WHMIS Class: A – Compressed Gas; B1 – Flammable and Combustible Material – Division 1 Flammable Gases

UN/PIN Number: 1972

TDG Classification: Class 2.1 Flammable Gases

Chemical Family: Hydrocarbon Liquid

Chemical Formula: CH4 (Methane)

Molecular Weight: 16.04 (Methane)

CAS Number: 74-82-8

Trade Names and Synonyms: Liquefied Methane

51

Section 2 – HAZARDS IDENTIFICATION

EMERGENCY OVERVIEW

Appearance/Odor: Odorless, colorless liquid. This product is not odorized.

Flammable: Very flammable after vaporization to gaseous phase.

Potential Health Effects: See Section 11 for more information

Potential Environmental Effects: See Section 12 for more information.

Likely Routes of Exposure: Eye and skin contact, acute inhalation

Acute - Eye, Skin and Inhalation: Liquid or cold gas contact with skin or eyes could cause freezing or severe cryogenic burns. After vaporisation, contact with burning gas may cause burns.

Chronic- Inhalation: None

Ingestion: None

Skin Adsorption: None

Section 3 – FIRST AID MEASURES

Skin Contact: Cryogenic burns. Remove constricting clothing. Do not thaw too rapidly. Transport to hospital immediately.

Eye Contact: Get medical attention immediately.

Inhalation: Move to fresh air. Give artificial respiration if breathing has stopped. Call a physician.

Ingestion: Unlikely route of exposure as this is a gas at normal room temperature and pressure.

General Advice: Use extreme care in handling due to high flammability and risk of cryogenic burns.

Section 4 – COMPOSITION / INFORMATION ON INGREDIENTS

Component CAS Number % by Wt. Exposure Limits(1)

Methane 74-82-8 95 Simple Asphyxiant Ethane 74-84-0 3 Simple Asphyxiant Propane 74-98-6 1 Simple Asphyxiant Nitrogen 7727-37-9 1 Simple Asphyxiant

(1) See Section 8 for additional exposure limit information for C1 to C4 Aliphatic Hydrocarbon Gases.

Section 5 – FIRE FIGHTING MEASURES

Flammability: Flammable gas

Suitable Extinguishing Media: Dry Chemical (Purple-K). To suppress or contain, use water fog or high expansion foam.

Unsuitable Extinguishing Media: Do not direct water spray directly at LNG pool; this will only increase rate of vaporization. Cold vapor is heavier than air and will not readily disperse until warmed up. High expansion foam may be used to help control the vaporization rate.

Products of Combustion: Carbon dioxide and carbon monoxide

Protection of Firefighters: Very flammable after vaporization to gaseous phase. Firefighters should wear self-contained breathing apparatus (SCBA) in case of oxygen deficient atmosphere. Use Combustible Gas Indicator to determine the extent of vapor cloud.

Sensitivity to Static Discharge: Ignitable by static discharge

Sensitivity to Mechanical Impact: None

Explosive Power: Not known

52

Section 6 – ACCIDENTAL RELEASE MEASURES

Personal Precautions: Use personal protection recommended in Section 8.

Environmental Precautions: Not applicable

Methods for Containment: Evacuate area for 2000 foot (600 m) radius. Stay out of vapor cloud.

Methods for Clean-Up: Wear all protective equipment recommended in Section 8. Eliminate source of ignition.

Other Information: Allow to vaporize and disperse to atmosphere.

In case of an emergency and no response at LNG plant, call SERVICE CENTER: 1 (800) 663-9911.

Section 7 – HANDLING AND STORAGE

Handling: To be handled by trained personnel only, using equipment specifically designed for LNG, and following approved operating procedures.

Storage: Store only in vessels designed for LNG storage, and follow approved operating procedures.

Section 8 – EXPOSURE CONTROLS / PERSONAL PROTECTION

Exposure Limits: Simple asphyxiant - Maintain 19.5% oxygen level (below 19.5% oxygen is considered to be oxygen deficient).

Constituent ACGIH (8-hour) TWA WorkSafeBC (8-hour TWA) Methane 1000 ppm 1000 ppm Ethane 1000 ppm 1000 ppm Propane 1000 ppm 1000 ppm Nitrogen None listed None listed

Personal Protection Equipment: Ensure use of proper PPE at all times when handling this product.

Eye/face: Face shield with other eye protection (safety glasses)

Skin: Insulated gloves, safety work boots, Nomex coveralls.

Respiratory: Supplied air respiratory protection to be used (airline or self- contained breathing apparatus) in cases of oxygen deficient atmospheres.

Other Considerations: Use extreme care in handling due to high flammability and risk of cryogenic burns.

Engineering Controls: Provide electrical ground for all parts of handling system. Provide adequate ventilation to maintain more than 19.5% oxygen, less than 1% methane (20% of the lower explosive limit). Use of CGI is mandatory since product is odorless.

Section 9 – PHYSICAL AND CHEMICAL PROPERTIES

Color: ColorlessOdor: OdorlessOdor Threshold (ppm): Not availablePhysical State: LiquidpH: Not applicableFreezing Point (˚C): -182.5Boiling Point (˚C): -161.5Flash Point (˚C): -187.8Evaporation Rate: RapidFlammability (solid, gas): Flammable gasLower Explosion Limit: 5% (by volume, gas phase)Upper Explosion Limit: 15% (by volume, gas phase)Vapor Pressure: Container ratingVapor Density: > 1 @ -112 ˚C (air = 1)Specific Gravity: 0.45 (water = 1)Solubility in Water (20 ˚C): 24.4 parts per millions (wt)Partition Coefficient: Octanol/water – 1.09 LogKOWAuto Ignition Temperature: 537 ˚C (gas phase)Percent Volatile (by volume): 99%Density (g/ml): 0.45 @ Boiling Point

8.4 Sample LNG MSDS (continued)

53

Section 10 – STABILITY AND REACTIVITY

Chemical Stability: YesCompatible Materials: Air, oxidizers, halidesHazardous Decomposition Products: None knownReactivity (and under what conditions): None known

Section 11 – TOXICOLOGICAL INFORMATION

LD50: Not availableLC50: Not availableAcute Effects: Liquid or cold gas contact with skin or eyes could cause freezing or severe cryogenic burns. After vaporization, contact with burning gas may cause burns.Chronic Effects: Not availableCarcinogenicity: Not considered carcinogenic by IARC, NTP, ACGIH or OSHA.Reproductive Effects: Not availableTeratogenicity: Not availableMutagenicity: Not availableIrritant: Not availableSensitizer: Not availableSynergistic Effects: Not available

Section 12 – ECOLOGICAL INFORMATION

Ecotoxicity: Not applicablePersistence / Degradability: Not applicableBioaccumulation / Accumulation: Not applicable

Section 13 – DISPOSAL CONSIDERATIONS

Disposal: Allow to vaporize and disperse to the atmosphere.

Section 14 – TRANSPORTATION INFORMATION

TDG Classification: 2.1 Flammable GasesUN/PIN Number: 1972Shipping Name: Methane, Refrigerated Liquid, or Natural Gas, Refrigerated Liquid with high methane contentSpecial Shipping Information: Transport only in shipping container designed for LNG and follow approved operating procedures.

Section 15 – REGULATORY INFORMATION

DSL (Canada): This product is on the DSL list.WHMIS Class: A – Compressed Gas; B1 – Flammable and Combustible Material – Division 1 Flammable Gases

Section 16 – OTHER INFORMATION

National Fire Protection Association (NFPA 704) Ratings:

Health 2 LEGEND 0 = minimal hazard Flammability 4 1 = slight hazard Instability 0 2 = moderate hazard (For methane from NFPA 325) 3 = severe hazard 4 = extreme hazard

Prepared by: AMEC Earth & Environmental Phone Number: (604) 294-3811 Occupational Hygiene Preparation Date: April 7, 2008 and Safety Group

Additional Information and Comments: This MSDS has been updated from a 9 section MSDS (2004-02-20) to a 16 section MSDS on 2008-03-10. All sections and the order that which they appear have been changed as per American National Standard – For Hazardous Industrial Chemicals – Material Safety Data Sheets Preparation (ANSI Z400.1-2004).

New text has been added in Section 8: Exposure Guidelines, WorkSafeBC and ACGIH exposure limits for methane, ethane, and propane (WorkSafeBC Occupational Health and Safety Regulation (OHSR), Guidelines Part 5, Table of Exposure Limits for Chemical and Biological Substances and ACGIH TLVs and BEI’s, Threshold Limit Values for Chemical Substances and Physical Agents & Biological Exposure Indices, 2007, respectively).

The information contained in this document applies to this specific material as supplied. It may not be valid for this material if it is used in combination with any other materials. It is the user’s responsibility to satisfy oneself as to the suitability and completeness of this information for their own particular use.

Information Sources: Various

54

Appendix A. Daily Log SheetThisappendixcontainsasampledailylogsheetthatyoucanduplicate.

55

Da

ily L

og

Sh

ee

tNa

me:

Date

:

Truc

k/Tr

acto

r No.

:

Odom

eter

Rea

ding

:

Pre-

trip

insp

ectio

n of

Wes

tpor

t LNG

Sys

tem

Befo

re e

nter

ing

the

cab:

Ch

eck

gas

dete

ctio

n m

onito

r is

pow

ered

Ch

eck

gas

dete

ctio

n m

onito

r is

NOT

in a

larm

Afte

r ent

erin

g th

e ca

b:

Chec

k ga

s de

tect

ion

mon

itor o

pera

tion

by p

ushi

ng [T

EST]

but

ton

Ch

eck

dies

el a

nd L

NG fu

el le

vels

Insi

de th

e en

gine

com

partm

ent:

Chec

k fo

r lea

ks, d

amag

e or

tam

perin

g

Chec

k ho

ses

and

fittin

gs

Drai

n al

l die

sel f

uel-w

ater

sep

arat

ors

Dr

ain

vent

sta

ck fi

lter

In

spec

t hig

h-pr

essu

re d

iese

l pum

p an

d be

lt

Insp

ect h

ydra

ulic

pum

p

Insp

ect F

CM

Chec

k en

gine

oil

leve

ls

Chec

k en

gine

coo

lant

leve

ls

Chec

k hy

drau

lic le

vels

Outs

ide

the

engi

ne c

ompa

rtmen

t:

Ch

eck

gas

filte

r loc

ated

on

fram

e ra

il fo

r lea

ks o

r dam

age

Ch

eck

LNG

Syst

em (t

anks

, val

ves,

plu

mbi

ng) f

or fr

ost o

r his

sing

Ch

eck

for p

rese

nce

of s

econ

dary

relie

f val

ve c

ap

Chec

k ve

nt-t

o-st

atio

n va

lve

is c

lose

d

Chec

k th

e ve

nt s

tack

is n

ot v

entin

g ex

cess

ivel

y

Chec

k hy

drau

lic o

il co

oler

is u

nblo

cked

and

free

of d

ebris

Reco

rd s

yste

m p

ress

ure:

Ta

nk 1

[T

ank

2]

[Tan

k 3]

Fuel

ing

Chec

k LN

G fu

elin

g:

Quan

tity

of L

NG a

dded

Odom

eter

read

ing

at fi

ll

Ta

nk 1

leve

l afte

r fill

[Tan

k 2

leve

l afte

r fill]

[Tan

k 3

leve

l afte

r fill]

Chec

k Ve

nt-t

o-St

atio

n Va

lve

is c

lose

d

Dies

el fu

elin

g:

Quan

tity

of d

iese

l add

ed

Od

omet

er re

adin

g at

fill

Post

-trip

insp

ectio

n of

the

Wes

tpor

t LNG

Sys

tem

Chec

k LN

G sy

stem

:

No

gas

leak

s (n

o fro

st, h

issi

ng s

ound

, or a

larm

)

No h

ydra

ulic

or c

oola

nt le

aks

No

leak

s in

eng

ine

com

partm

ent

Reco

rd s

yste

m p

ress

ure:

Ta

nk 1

[T

ank

2]

[Tan

k 3]

Note

s:

56

Da

ily L

og

Sh

ee

tNam

e:

Date:

Truck/Tractor No.:

Odometer Reading:

Pre-trip inspection of Westport LNG System

Before entering the cab:

Check gas detection m

onitor is powered


onitor is NOT in alarm

After entering the cab:


onitor operation by pushing [TEST] button

Check diesel and LNG fuel levels

Inside the engine compartm

ent:

Check for leaks, dam

age or tampering

Check hoses and fittings

Drain all diesel fuel-w

ater separators

Drain vent stack filter

Inspect high-pressure diesel pump and belt

Inspect hydraulic pum

p

Inspect FCM

Check engine oil levels

Check engine coolant levels

Check hydraulic levels

Outside the engine compartm

ent:

Check gas filter located on fram

e rail for leaks or damage

Check LNG System

(tanks, valves, plumbing) for frost or hissing

Check for presence of secondary relief valve cap

Check vent-to-station valve is closed

Check the vent stack is not venting excessively

Check hydraulic oil cooler is unblocked and free of debris

Record system pressure:

Tank 1

[Tank 2]

[Tank 3]

FuelingCheck LNG fueling:

Quantity of LNG added

Odometer reading at fill

Tank 1 level after fill

[Tank 2 level after fill]

[Tank 3 level after fill]

Check Vent-to-Station Valve is closed

Diesel fueling:

Quantity of diesel added

Odom

eter reading at fill

Post-trip inspection of the Westport LNG System

Check LNG system:

No gas leaks (no frost, hissing sound, or alarm)

No hydraulic or coolant leaks

No leaks in engine com

partment

Record system pressure:

Tank 1

[Tank 2]

[Tank 3]

Notes:

57

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58

Appendix B. Towing and RecoveryIngeneral,non-accidentrelatedtowingandrecoveryoperationsonWestportLNGSystemequippedtrucksareidenticaltoconventionaldieseltrucks.Thefollowingadditionalprecautionsandlimitationsapply:

1. Ensurethatthegasdetectionmonitorisnotindicatingyelloworredbeforecommencingtowing/recovery.

2. AbsolutelyDONOTSMOKEinoraroundtheWestportLNGSystemtruckduringrecoveryoperations.Naturalgasvaporishighlyflammable.

3. Donottouchanytruckhosesorlinesthatappearfrosty.LNGpipingisverycoldandcancausesevereburnsorfrostbitewhenincontactwithskin.

4. Bealertforvaporcloudsnearthegroundorpoolsofliquidform,indicatingaLNGleak.CeaserecoveryimmediatelyandcontactWestportServicepersonnel.

5. OnlyrecoverimmobilizedtrucktoapprovedWestportLNGSystemrepairfacilities.DonotattemptmaintenanceontheWestportLNGSystem.

6. ImmobilizedWestportLNGSystemtruckMUSTNOTbedroppedoff/storedindoorsattherepairshopovernight.Notifyrepairshoppersonnelofthedrop,andthatLNGispresentonthetruck.








59

Appendix C. Contact InformationToreportanemergency,maintenanceissue,providefeedback,oraskageneralortechnicalquestion:

Contact Westport Service at:

North America

1-888-WPT-HPDI [email protected]

Australia

[email protected]

Head Office 101–1750West75thAvenue

Vancouver,B.C.CanadaV6P6G2

phone:1-604-718-2000fax:1-604-718-2001

http://www.westport-hd.comhttp://service.westport.com

WestportGXandLNGSystemOperator’sManualP/N:10014256

Revision:0Date:February2009

isx g and lng system owner's manual -...

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