fac7.1_best practices and nfpa codes for clean agent systems_jeremiah crocker
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Session #FAC 7.1 Suppression
Jeremiah Crocker, P.E.Business Development ana!er
Best Practices an"FPA Co"es $or
Clean A!entS%stems
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Jeremiah Crocker, P.E.• asters in Fire Protection
En!ineerin!
• 7 %ears o$ Fire Protection '(De)perience
• 'e!istere" Pro$essional En!ineer*Fire Protection
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Best Practicesand NFPACodes for Clean
Agent Systems
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• S%stem -%pe Selection• Detection etho" an" Control o!ic• Enclosure /nte!rit% /ssues• Perio"ic aintenance 'e0uirements• nintentional Dischar!e Prevention
Agenda
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Stan"ar" on Clean A!ent FireE)tin!uishin! S%stems, &:1&
E"ition• Sets Desi!n, /nstallation an"
aintenance Stan"ar"s $orClean A!ent S%stems
• Anne) aterial E)plains Certain/n$ormation in Depth, i.e., 'oom/nte!rit% -estin!
Clean Agent Standard !"PA #$$%
FPA &::1 Stan"ar" on Clean A!ent Fire E)tin!uishin! S%stems
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A""itional ui"ance on*•
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• -otal Floo" aseous A!ent• Enclosure re0uire"
• Sa$e $or ccupie" Areas• Environmentall% Accepta4le• Electricall% on Con"uctive• eaves o 'esi"ue
e-ning Clean Agents
FPA &::1 Stan"ar" on Clean A!ent Fire E)tin!uishin! S%stems
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Clean Agent SystemComponents• Detection ( Control
• A!ent
• A!ent Stora!e• -anks ( 4rackets
• A!ent "eliver% s%stem• Dischar!e hose, pipin! ( no55les
• Actuation s%stem• 3alve actuator• Actuation connection components
• Suita4le Enclosure• Pressure 'elie$
• 'oom /nte!rit%
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Clean Agent Application E ample
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Clean Agent Categories
Ar!on?
Suppression MethodHeat Absorption
Suppression MethodOxygen eduction
One Common !oalFire Suppression
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/alocar0on Systems•
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/alocar0on ) 'ypical System Components
Agent Cylinders
Control Panel
Electric Actuator
System Piping
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Bene-ts and Challenges )/alocar0ons
Bene-ts• =i"el% Availa4le
• Small Footprint
• o6er /nstalle"Cost
• 'api" 'echar!eAvaila4ilit%
Challenges• Cost o$ a!ent
• 'oom /nte!rit%
• imite" Pipe 'uns
• 3aria4leEnvironmentalCharacteristics
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&nert 1as Systems• /nert as a!ents are compose" o$ atmospheric !ases
• Class A ha5ar"s* concentrations $rom + .& to +7.
• Class C ha5ar"s* concentrations $rom [email protected] to &.7
• -anks are pressuri5e" to 12:, &::, or +:: 4ar
• : 1&: secon"s to "ischar!e
• 'oom inte!rit% less o$ a concern
• Pressure relie$ critical
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&nert 1as 'ypical System Components
Agent Cylinders
Control Panel
Pressure Reducer
Electric Actuator
Selector Valves
System Piping
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&nert 1ases Bene-ts and Challenges
Bene-ts
• Environmentall%Beni!n• Cost o$ A!ent• E!ress Sa$et%
• o thermal shock• /ncrease"
'etention -ime• Selector 3alves
• Pipe Distances
Challenges
• Footprint ># o$C%lin"ers?•
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/alocar0on Agents• Suppress 4%
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!"PA *# !ational "ire Alarm Code
• .1&.1 Fire alarm controlunits use" $or automatic ormanual activation o$ a Lresuppression s%stem shall 4eliste" $or releasin! service
• .1&.& 'eleasin! "evices $orsuppression s%stems shall
4e liste" $or use 6ithreleasin! service controlunits.
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A""resses Suppression
SpeciLc /ssues*• Cross 5one Detector Spacin! &2:
s0$t
• Air Samplin! at
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Notification Devices
Control Panel
Spot Detection
Early Warning DetectionManual Devices
Agent Cylinder Pre Action Valve
!VAC Controls
etection and Control Se(uence o23peration
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'ypical etection 4 Control Se(uence
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• 4scuration evel• /oni5ation :.@ 1.2 o4s9$t
• Photoelectric &.: .:o4s9$t
• aser :.:& &.:: o4s9$t• Passive
• 'e0uires smoke tomi!rate to "etector
• A""ressa4ilit%•
A4ilit% to pinpoint alarmlocation
Spot Smoke etection
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Air Aspirating Smoke etection
• 4scuration evels
• Aspiratin! :.::12.&2:: o4s9$t
• Active• Allo6s $or optimi5e"
placement• ultiple Alarm evels
•
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Room &ntegrity &ssues• 'etain the A!ent• Stop Air E)chan!e
• Provi"e Pressure'elie$
Esta4lish an" aintain ver the i$e o$ the S%stem
5ethods• Fan -estin!
• Dischar!e -estin!• 3entin! Calculations• 3entin! Components• Annual 3eriLcation
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Room &ntegrity emonstrated
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• 'e0uires /nspection o$Enclosure Ever% 1& onths or aDocumente" Control Pro!ram
• 'e0uires Enclosure 'e -est i$ncertaint% E)ists.
Clean Agent Standard !"PA #$$%
FPA &::1 Stan"ar" on Clean A!ent Fire E)tin!uishin! S%stems
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• All Clean A!ent -%pes'e0uire 3entin!Calculations
Enclosure 6enting Re2erence
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!"PA #$$% Periodic 5aintenanceRe(s.
FPA &::1 Stan"ar" on Clean A!ent Fire E)tin!uishin! S%stems
• 7.1.1 At east Annuall%, allS%stems Shall 4e -horou!hl%/nspecte" an" -este" $orProper peration 4% PersonnelMualiLe" in the /nstallationan" -estin! o$ Clean A!entE)tin!uishin! S%stems.
• 7.1.+ At east Semiannuall%,
the A!ent Muantit% an"PressureNShall 4e Checke".
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• -his ui"e Provi"esSu!!este" Checklists an"Forms -hat Compl% 6ith
FPA 'e0uirements to 4ese" 4% /nspection an"aintenance Personnel
System &nspection Re2erence
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• #1 S%stem 6ner
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Causes 2or!on)"ire Related
ischarge
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Best Practices and !"PA Codes2or Clean Agent SystemsSummary91. Select a S%stem -%pe Base" on Complete
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:uestions;
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'hank You< J e r e m
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