FAC7.1_Best Practices and NFPA Codes for Clean Agent Systems_Jeremiah Crocker

8/18/2019 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



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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 #$$%



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• All Clean A!ent -%pes'e0uire 3entin!Calculations

Enclosure 6enting Re2erence


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!"PA #$$% Periodic 5aintenanceRe(s.


• 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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C r o c k e r

P . E .

B u s i n e s s

D e v e l o

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J e r e m

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FAC7.1_Best Practices and NFPA Codes for Clean Agent Systems_Jeremiah Crocker

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