Doc.P/N06‐312
Rev.11/March2020
PAGE/7
4.2 FillbyWeight
IG‐55(50%Argonand50%NitrogenMixture)
IG‐55inertgasmixtureconsistsof50±5%nitrogenand50±5%argon.Detailedbelowarethestepsnecessarytofillthe
PROINERTcontainerassemblywithIG‐55.
Connecttothevalveoutletandpull25"to27"ofthevacuumtoremoveresidualatmosphereandmoisture.
Fillthecontainerviathevalveinletwithargonandthennitrogenperthetablebelowforthesystempressure
required:
Size
(Liters)
Argon
(kg)
Nitrogen
(kg)
ResultantIG‐55
(kg)
SystemPressure
(bar@15°C)
SystemPressure
(psi@59°F)
80 12.87–13.43 9.43–9.79 22.66–22.87 200 2,900
80 18.91–19.73 13.23–13.73 32.64–32.96 300 4,350
NOTE: Performapreliminaryleakcheckattheneckofthecylinderwithasoapsolution(SwageLokSnooporits
equivalent)onceithasbeenfilledwithargon.Ifaleakisdetected,discontinuethefillforthatparticular
cylinder.
Verifythecontainerbyensuringthefinalfillpressureisasdetailedaboveat59°F(15°C).Ifrequired,referto
thepressurevs.temperaturechartforIG‐55inAppendixA.2.
Closethevalvebyunscrewingthecentralscrewonthefillingadaptorandremovingthetophalfofthe
adaptor.Noticehowthedowelontheinternalpieceofthefillingadaptormovesdownwardduringthis
operation.
ProceedwithremovalofthebottomhalfofthefillingadaptorbyunscrewingthetwoM6capscrews.Remove
thisadaptorfromthevalveandcheckthatthespringwasherhasdroppedlowerthanitsoriginaldepth.
Ventthefillinghoseandcheckthatthereisnoflowfromthevalveoutlet.
Fitthevalvelockoutassembly ontothevalve(seefigurebelow)priortoremovingthefillinghose.
Removethefillinghoseandscrewtherecoilcapontothedischargeoutlet.
Removethevalvelockoutassemblyfromthevalveaftertherecoilcaphasbeenfitted.
Proceedtoleakchecking(refertoSection5.0).
Checkthecontainerpressure(refertoSection6.0).
Oncetestingiscomplete,screwthesh ipping/safetycapontothecylinder.
Figure4.2.1‐1IG‐55ValveLockoutAssemblyInstalled
ValveLockout
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