511OccupationalSafetyandHealthAdmin.,Labor§1910.164thesystem’sapplication.Carbondiox-ideobtainedbydryiceconversiontoliquidisnotacceptableunlessitisprocessedtoremoveexcesswaterandoil.(2)Exceptduringoverhaul,theem-ployershallassurethatthedesignedconcentrationofgaseousagentsismaintaineduntilthefirehasbeenex-tinguishedorisundercontrol.(3)Theemployershallassurethatemployeesarenotexposedtotoxiclev-elsofgaseousagentoritsdecomposi-tionproducts.(4)Theemployershallassurethatthedesignedextinguishingconcentra-tionisreachedwithin30secondsofini-tialdischargeexceptforHalonsystemswhichmustachievedesignconcentra-tionwithin10seconds.(5)Theemployershallprovideadis-tinctivepre-dischargeemployeealarmcapableofbeingperceivedaboveambi-entlightornoiselevelswhenagentde-signconcentrationsexceedthemax-imumsafelevelforemployeeexposure.Apre-dischargeemployeealarmforalertingemployeesbeforesystemdis-chargeshallbeprovidedonHalon1211andcarbondioxidesystemswithade-signconcentrationof4percentorgreaterandforHalon1301systemswithadesignconcentrationof10percentorgreater.Thepre-dischargeemployeealarmshallprovideemployeestimetosafelyexitthedischargeareapriortosystemdischarge.(6)(i)Whereegressfromanareacan-notbeaccomplishedwithinoneminute,theemployershallnotuseHalon1301inconcentrationsgreaterthan7percent.(ii)Whereegresstakesgreaterthan30secondsbutlessthanoneminute,theemployershallnotuseHalon1301inaconcentrationgreaterthan10per-cent.(iii)Halon1301concentrationsgreat-erthan10percentareonlypermittedinareasnotnormallyoccupiedbyem-ployeesprovidedthatanyemployeeintheareacanescapewithin30seconds.Theemployershallassurethatnoun-protectedemployeesentertheareaduringagentdischarge.[45FR60712,Sept.12,1980;46FR24557,May1,1981]§1910.163Fixedextinguishingsys-tems,watersprayandfoam.(a)Scopeandapplication.Thissectionappliestoallfixedextinguishingsys-tems,usingwaterorfoamsolutionastheextinguishingagent,installedtomeetaparticularOSHAstandard.Thesesystemsshallalsocomplywith§1910.160.Thissectiondoesnotapplytoautomaticsprinklersystemswhicharecoveredunder§1910.159.(b)Specificrequirements.(1)Theem-ployershallassurethatfoamandwaterspraysystemsaredesignedtobeeffectiveinatleastcontrollingfireintheprotectedareaoronprotectedequipment.(2)Theemployershallassurethatdrainageofwaterspraysystemsisdi-rectedawayfromareaswhereemploy-eesareworkingandthatnoemergencyegressispermittedthroughthedrain-agepath.[45FR60712,Sept.12,1980]OTHERFIREPROTECTIONSYSTEMS§1910.164Firedetectionsystems.(a)Scopeandapplication.Thissectionappliestoallautomaticfiredetectionsystemsinstalledtomeettherequire-mentsofaparticularOSHAstandard.(b)Installationandrestoration.(1)Theemployershallassurethatalldevicesandequipmentconstructedandin-stalledtocomplywiththisstandardareapprovedforthepurposeforwhichtheyareintended.(2)Theemployershallrestoreallfiredetectionsystemsandcomponentstonormaloperatingconditionasprompt-lyaspossibleaftereachtestoralarm.Sparedetectiondevicesandcompo-nentswhicharenormallydestroyedintheprocessofdetectingfiresshallbeavailableonthepremisesorfromalocalsupplierinsufficientquantitiesandlocationsforpromptrestorationofthesystem.(c)Maintenanceandtesting.(1)Theemployershallmaintainallsystemsinanoperableconditionexceptduringre-pairsormaintenance.(2)Theemployershallassurethatfiredetectorsandfiredetectionsys-temsaretestedandadjustedasoftenasneededtomaintainproperrel...
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