Honeywell HON COCON 13 - Placement of the Body; Installation of Vent Stack

Operators manual
© 2017 Honeywell International Inc.
Operators manual underground gas pressure reducing station
Type: HON COCON 13
Page 20
4.1.3‐Placementofthebody

Remark: Useliftingtackle,ahoistingframeoracranetoinstallthebody.
Duringbadweatherconditions(stormandwind),placeashelterabovethestation.This
willpreventwateranddirtfromgettingintothestation.Itisimportantthatthearea
undertheshelteriswellventilated.
Supporttheopenedpitcover,bywindforceeightandup,withasupporttoprevent
closing.

‐ Closecasingcoverandpitcover
‐ Putthehoistinghooksinthecranehooks.
‐ Hoistthecasingcarefully.Ensurethatthecenterofthecasinghangsabovethecenterofthepit.
‐ Lowerthecasingcarefullyontothefoundation.

Inmostcases,thesupplyanddischargepipesare
attachedtothecasingwithaconnectingflange.

‐ PutasealringANSI150betweenthesupplypipeflangeandtheinletheader.
- Attachthesupplypipeflangetotheflangeoftheinletheaderwithfourbolts,four
nutsandeightwashers.Thewashersaresituatedbetween
theboltheadsandthesupplypipeflangeand
betweentheballvalveflangeandthenuts.
‐ PutasealringANSI150betweenthedownstreamdischargepipeflangeandtheoutletheaderflange.
‐ Attachthedownstreamdischargepipeflangetothecasing'soutletheaderflangewitheightbolts‐‐,
eight
nuts‐‐andsixteenwashers.Thewashersaresituatedbetweentheboltheadsandthedischargepipeflange
andbetweentheoutletflangeandthenuts.

Remark:Insulatetheflangeconnectionswithacovering,topreventthefastenersfromcorroding.

Weadviseyoutoplacearailingaroundthestation.Thispreventsthestationfromobstructione.g.vehicles.

4.2–Installationoftheventstack

Remark:Duringbadweatherconditions(stormandwind),placeashelterabovethestation.Thiswill
preventwateranddirtfromgettingintothe
station.Itisimportantthattheareaunder
theshelteriswellventilated.

Supporttheopenedpitcover,bywindforceeightandup,withasupporttopreventclosing.

Whenthecasingcoverandpitcoverareclosedandthestationisinoperation,theareainwhichtheregulatorpilot,
reliefvalveandshutoffrelayarelocatediskeptatmospheric.Thisisdonebyaconnectionbetweenthecasingand
theventpipebymeansofheavy‐
dutyflexiblehoses.Thereliefhasitsownseparateconnectiontoatmosphere
throughtheventpipewithaflamearrestorontopoftheventpipe.

‐ Fillthespacebetweenthestationandthewallofthehole,untiljustundertheventconnectionsonthe
casingwithsoil.
‐ Place
theventstackatadistanceofapproximately0.5metersfromthecasinginadepthinaccordancewith
illustration4.1.Theventstackrequiresaconcretefoundation.
- Twohosesaresuppliedwiththeunit(Threehosesifareliefvalveisfitted).Oneof2meters(Incase
ofrelief
valvetwo)andoneof3meterstomakeitpossibletoplacetheventstackoneachsideoftheHONCocon.
- Attachthehoseswiththe¾”fittingbetweentheventilationconnectionsonthecasingandtheventstack.
Theventstackhasthreeconnectionsthe
middleoneisforthereliefvalveconnection.Theothertwohaveto
beconnectedtothecasingtokeeptheareainwhichtheregulatorpilot,reliefvalveandshutoffrelayare
locatedatmospheric.Besurethatthehosesareconnectedinsuchawaythatnowater
canenterthehoses.
- Closethepitcover.
‐ Fillthespacebetweenthestationandwalloftheholetogroundlevelwithsoil.