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Dival SQD-6 - MT 224-E - 02-2020
ENPRECAUTION
GENERAL PRECAUTION
The apparatus described in this manual is a device subject to pressure installed in systems under pressure;
Theapparatusinquesonisnormallyinstalledinsystemsfortransporngammablegases(naturalgas,forexaple).
PRECAUTION FOR THE OPERATORS
Beforeproceedingwithinstallaon,commissioningormaintenance,operatorsmust:
• Examinethesafetyprovisionsapplicabletotheinstallaoninwhichtheymustwork;
• Obtaintheauthorisaonsnecessaryforworkingwhenrequired;
• Usethenecessarymeansofindividualprotecon(helmet,goggles,etc.);
• Ensurethattheareainwhichtheyoperateisedwiththemeansofcollecveproteconenvisagedand
withthenecessarysafetyindicaons.
PACKING
Thepackingfortransportaonofequipmentandofrelevantsparepartsaredesignedandshapedtoavoiddamageto
anypartduringtransportaon,warehousingandhandlingacvies.Thereforetheequipmentandsparepartsshallbe
keptintotheirpackingunltheirinstallaoninthenalsite.Aerpackingisopen,checkthatnodamageoccurredto
anygoods.Ifdamageoccurredinformthesupplierandkeeppackingforanyvericaon.
HANDLING
Thehandlingoftheapparatusandofitscomponentsmustonlybecarriedoutaerensuringthattheliinggearis
adequatefortheloadstoli(liingcapacityandfunconality).Theapparatusmustbehandledusingtheliingpoints
providedontheapparatusitself.
Motorisedmeansmustonlybeusedbythepersonsinchargeofthem.
INSTALLATION
Theinstallaonofthepressureregulatorhastooccurincompliancewiththeprovisions(lawsorstandards)inforcein
theplaceofinstallaon.
Indetail,naturalgasplantshavetoshowfeaturesincompliancewiththelawprovisionsandstandardrequirementsin
forceintheplaceofinstallaonoratleaseincompliancewithstandardsEN12186orEN12279;indetail,itisneces-
sarytomeettheprovisionsofparagraphs6.2,7.5.2,7.7,9.3ofthestandardEN12186and6.2,7.4,7.6,9.3oftheEN
12279standard.Theinstallaonincompliancewithsuchstandardsminimizestheriskofrehazardandtheformaon
ofpotenallyexplosiveatmospheres.
Thevalveisnotequippedwithexternalpressurelimitaondevices;therefore,ithastobeinstalledmakingsurethat
theoperangpressureof theassembly on whichit is installeddoesnot exceedthemaximumallowablepressure
(PS).
Therefore,theuser,asdeemednecessarybythesame,shallinstallontheassemblysuitablepressurelimitaonsy-
stems,aswellasprovidetheplantwithsuitablereliefordrainsystemsinordertodischargethepressureanduid
containedintheplantbeforeproceedingwithanyinspeconandmaintenanceacvity.
Iftheinstallaonoftheapparatusrequirestheapplicaonofcompressionngsintheeld,thesemustbeinstalled
followingtheinstruconsofthemanufacturerofthengsthemselves.Thechoiceofthengmustbecompable
withtheusespeciedfortheapparatusandwiththespecicaonsofthesystemwhenenvisaged..
START UP
Commissioningmustbecarriedoutbyadequatelytrainedpersonnel.
Duringthecommissioningacvies,thepersonnelnotstrictlynecessarymustbeorderedawayandtheno-goarea
mustbeproperlysignalled(signs,barriers,etc.).
Checkthatthesengsoftheapparatusarethoserequested;ifnecessary,resetthemtotherequiredvaluesinaccor-
dancewiththeproceduresindicatedinthemanual.
Whencommissioning,therisksassociatedwithanydischargesintotheatmosphereofammableornoxiousgases
mustbeassessed.
Ininstallaonsinnaturalgasdistribuonnetworks,theriskoftheformaonofexplosivemixtures(gas/air)insidethe
pipingmustbeconsidered.
COMPLIANCE WITH DIRECTIVE 2014/68/EU (PED)
TheSQD-6regulatorsareclassiedasFailOpenregulatorsandasDierenalStrength(DS)accordingtoEN334and
arethereforedeniedassafetyaccessoriesaccordingtoDirecve2014/68/EU(PED).