Arcflash Pbrhjg Wmv 060509

7/24/2019 Arcflash Pbrhjg Wmv 060509

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1PB/RH -- March 3, 2009

ARC FLASH HAZARDS

Construction Safety

Association of Ontario



2PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Purpose of this Presentation

#ntro"uction to$

% Ha!ar" of arc fash

% &e' CSA Stan"ar" on eectrica safety

% Arc fash (re)ention an" (rotection




Five Main Topics

1. #ntro"uction to arc fash

2. Arc fash in*uries

3. Co"es an" stan"ar"s

. Protecti)e cothin+ an" eui(ent

!. Pre)ention



PB/RH -- March 3, 2009

Topic 1 "Topic 1 "#ntro$uction to Arc F%ash#ntro$uction to Arc F%ash



!PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

&hat is an Arc F%ash Ha'ar$(

“. . . a dangerous condition associated with the

release of energy caused by an electric arc.”



)PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

&hat is an *%ectric Arc(

An eectric arc is a short circuit throu+h the air.


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An eectric arc 'i osciate an" escaate if

not constraine".

A sin+e-(hase eectric arc can en+uf asecon" or thir" con"uctor in ony t'o cyces.

An eectric arcs current (ro(es the arc a'ay

fro the (o'er source.

Characteristics of an *%ectric Arc


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PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

&hat Causes Arc F%ash(

ust, i(urities, corrosion, con"ensation, anias

S(ar1 "ischar+e fro$

% Acci"enta touchin+

% ro((in+ toos

O)er-)ota+es across narro' +a(s

Faiure of insuatin+ aterias

ui(ent faiure


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&hat is Arc %ast(

. 4he fash causes an e5(osi)e e5(ansion

of air an" eta.

% For e5a(e$ 6hen co((er )a(ouri!es it

e5(an"s 7y a factor of 8,000.

2. 4he 7ast (ro"uces "an+erous$

% Pressure 'a)es % Soun" 'a)es

% Moten stee an" shra(ne.


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Video Clip 1 – Arc Flash DemoVideo Clip 1 – Arc Flash Demo




ectric arc Arc fash Arc 7ast

Arc F%ash *vents

Co(ients of Sais7ury ectrica

Safety :.:.C.




For0s of Arc F%ash *ner

&oise

5(ansion

;a(ori!ation

4hera ra"iation



13PB/RH -- March 3, 2009

Topic 2 " Arc F%ash #nuriesTopic 2 " Arc F%ash #nuries

13




Arc F%ash #nuries

ectric shoc1

Se)ere 7urns

Bin"ness

Bast in*uries

% Shra(ne 'oun"s

% :un+ 7ast in*uries

% Ru(ture" ear"rus

% Pressure 'a)e in*uries



1!PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

1. Po4er % aount

of ener+y at the arc

2. Distance % of the

'or1er to the arc

3. Ti0e % "uration of

the arc e5(osure

Severit Factors



1)PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

5i$eo C%ip 2 " 67ot Safe at 1, inches8



1+PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

5i$eo C%ip 3 " 67ot Safe &or9in 7ear8



1,PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

*%ectric Shoc9 #nur " urn



1-PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Severe urns fro0 Arc F%ash

Arc fash u( to 3<,000=F

Sun 9,900=F



2/PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Pro:a:i%it of Survivin urns

; S

u r v i v a

%

Ae Rane< =ears




%in$ness

Fash of i+ht is so intense it can

"aa+e )ision.




Shrapne% &oun$s

Material and molten metalcan hit the body at over

700 miles per hour.



23 PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

%ast Lun #nur >L#?

Arc 7ast can cause inhaation in*uries.

For e5a(e$

% #nhain+ hi+h te(eratureco((er )a(our.

% More than 00 to5ic

su7stances can 7e foun"

in the fues.

BLI + Burns = Greater chance of death




Hearin Da0ae

Arc 7ast at 2 feet >< "eci7es

?et en+ine at 200 feet 32 "eci7es

Pain thresho" 30 "eci7es



2! PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Pressure &ave #nuries

Arc 7ast can thro' a 'or1er$

% Off a a""er

%#nto near7y 'as or eui(ent.

2000 7s/ft2 (ressure on the 7o"y can cause$

% Concussion

% Coa(se" un+s % Other interna in*uries



2) PB/RH -- March 3, 2009

Topic 3 "Topic 3 "Co$es an$ Stan$ar$sCo$es an$ Stan$ar$s

2)



2+ PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Stan$ar$s

@S Occu(ationa Safety

Heath A"inistration

@S &ationa Fire Protection Association

-Stan"ar" &FPA 0

#nstitute of ectrica

ectronics n+ineers -Stan"ar" <>

Cana"ian Stan"ar"s Association

-Stan"ar" ->82

Occu(ationa Heath Safety Act -A((ica7e re+uations

Cana"ian ectrica Co"e

-Rue 2-308

http://www.ieee.org/

http://www.osha.gov/as/opa/osha35yearmilestones.html



2, PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

&hat is 7FPA +/*(

7ationa Fire Protection Association

“Standard for Electrical Safety in the Worplace”

D Stan"ar" for eectrica safety in @nite" Sates

D EHaroni!e" 'ith CSA >82



2-

&hat is CSA Stan$ar$ Z)2(

4he stan"ar" for 'or1(ace eectricasafety in Cana"a.

EHaroni!e" 'ith &FPA 0.




3/ PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

ectrica Safety Pro+ra

Arc Fash Ha!ar" Anaysis

% Fash Protection Boun"ary

% Faut Current Cacuations

% Arc Faut Cearin+ 4ie

% #nci"ent ner+y 5(osure

Reuire" PP

CSA Stan$ar$ Z)2 a$$resses@




#nstitute of *ectrica an" *ectronics*n+ineers

Offers a etho" for (erforin+ arcfash ha!ar" cacuations.

&hat is #*** Stan$ar$ 1!,(

http://www.ieee.org/




&hat is C*C Ru%e 23/)(

Cana"ian *ectrica Co"e

“!ule "#$0% Shoc and &lash 'rotection” A reuireent for fie"-ar1in+ eectrica

eui(ent to 'arn (ersons of (otentia

eectric shoc1 an" arc fash ha!ar"s.




Sa(e a7e that co(ies 'ith CC Rue 2-308.

ReBuire$ &arnin La:e%




ptiona% &arnin La:e%



3! PB/RH -- March 3, 2009

Topic " Protective C%othinTopic " Protective C%othinan$ *Buip0entan$ *Buip0ent

3!



3) PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

F%a0eResistant >FR? C%othin

Protects a 'or1er fro recei)in+ se)ere

7urns if the 'or1er is e5(ose" to a fae.

#s sef-e5tin+uishin+ 'hen the source of thefae is reo)e".



3+ PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

&hat is a Ca%orie(

A caorie is the aount of heat nee"e" to raise

the te(erature of one +ra of 'ater 7y =C.

4hera ener+y is easure" in caories/cG.

(." calories)cm* + ,olding your finger

in the blue part of the

flame for one second.



3, PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

:iit the #nci"ent ner+y e)e of the

arc fash to .2 ca/cG a+ainst the

'or1ers chest.

:oo1 for a a7e that states$

% <08 a((ro)a IAS4M F<08J

% Arc ratin+ of the +arent.

A aterias in the +arent

shou" 7e FR Rate"$

% 4hrea" % Buttons

% #nsuation

% i((ers, etc.

FR Rate$ C%othin

Photo co(ients of

Sais7ury ectrica Safety :.:.C.



3- PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Tpica% PP* ReBuire0ents

Hazard/RiskCategory

Eye protection, ear canalinserts, long sleeve shirt

and pants

Arc ratedclothing

Face & HeadProtection

Flash SuitHood

0

2

3

>



/ PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Tpica% Protective C%othin

Hazard/RiskCategory

Clothing Description Required MinimumClothing Arc Rating

/ on!"elting, #la""a$le "aterial %ith #a$ric %eight o# at least '( oz/yd)

ot applica$le

1 Arc!rated FR shirt * FR pants or FR coveralls calories/c"+

2 Arc!rated FR shirt * FR pants or FR coveralls calories/c"+

3 Arc!rated FR shirt * FR pants or FR coveralls,

and Arc!rated #lash suit, the layered syste""ust "eet the re-uired "ini"u" rating'

)( calories/c"+

Arc!rated FR shirt * FR pants or FR coveralls,and Arc!rated #lash suit, the layered syste""ust "eet the re-uired "ini"u" rating'

. calories/c"+




Snthetic C%othin

Synthetic cothin+ that ets shall not

7e 'orn, such as$

% Acetate

% &yon

% Poyester

% Poy(ro(yene

% S(an"e5.




Arc F%ash Rate$ PP*

Reuire" iniu cothin+$

% &on-etin+, faa7e ateria,

% Fa7ric 'ei+ht of at east >.< o!/y".

PP ust aso (ro)i"e

arc fash (rotection$

% Face shie"

% Ko)es, etc.

Photo co(ients of


5i$ C%i 1//; C tt C% thi




5i$eo C%ip " 1//; Cotton C%othin

5i$ C%i ! P % t C tt C% thi




5i$eo C%ip ! " Po%esterCotton C%othin

5i$ C%i ) FR C% thi



! PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

5i$eo C%ip ) " FR C%othin



) PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

#ncreases e)e of (rotection.

May 7e i+hter than a sin+e

hea)y +arent.

Manufacturer ust (ro)i"e

the ne' co7ine" arc ratin+

affor"e" 7y ayerin+.

FR C%othin Can e Laere$

Photo co(ients of




+ PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

4e the su((ier that you nee"

arc fash rate" PP an" cothin+.

PP ust ha)e soe resistance to$

% Fae

% #+nition

% Metin+.

o7tain PP fro a 1no'n an"

truste" su((ier.

&hen Purchasin PP*

-ot all &! clothing is tested to S/M &(0%

Photo co(ients of




, PB/RH -- March 3, 2009

Topic ! " PreventionTopic ! " Prevention

,



- PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Tas9s 4ith Potentia% for Arc F%ash

O(eratin+ a s'itch or circuit 7rea1er

#nsertin+ or reo)in+ a circuit 7rea1er

O(enin+ an encosure "oor Reo)in+ a co)er I7ote" or hin+e"J

4estin+ for )ota+e

1n each tas2

Worer is interacting with energi3ed e4uipment.



!/ PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Con"uct a Fash Ha!ar" Anaysis to "eterine the

Fash Protection Boun"ary

#nci"ent ner+y e5(osure

4y(e an" arc ratin+ of PP

1f wor must be done on or near

energi3ed electrical e4uipment5

identify the potential for arc flash.

Arc F%ash Ha'ar$ Ana%sis



!1 PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Re"uce the faut cearin+ tie.

Re"uce the short-circuit current.

#(ro)e eui(ent aintenance.

C7TRLL#7E ARC FLASH HAZARDS

At the Source



!2

@se fash-resistant eui(ent.



At the Source

4hese "isconnect s'itch-(u+s ha)e 7een

"esi+ne" 'ith 7uit-in fash-(rotection.'hotos courtesy of Meltric 6orporation



!3 PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

#ncrease the 'or1in+ "istance.

Re"uce the ener+y e5(osure.

@se hin+e" "oors instea" of 7ote"

"oors to eiinate the ris1 of 7ots

fain+ into the (ane.6or1 "e-ener+i!e".


A%on the Path



! PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

ner+i!e" eectrica 'or1 (erit

Barriers

4rainin+ an" s1is

?o7 7riefin+s

PP

4oos


At the &or9er

Photo co(ients of




!! PB/RH -- March 3, 2009 Arc Fash Ha!ar"s -- Construction Safety Association of Ontario

Prevention Su00ar

. #ncu"e ectrica Safety in your Occu(ationa

Heath an" Safety Mana+eent Pro+ra.

2. @se an eectrica 'or1 (erit syste.

3. Con"uct re+uar eui(ent aintenance an" a7eeui(ent that (oses a fash ha!ar".

>. Confir sin+e-ine "ia+ras for accuracy an"

a)aia7e faut current.

<. Maintain "ocuentation (rocess.

8. Pro)i"e trainin+ an" *o7 7riefin+s.

. Con"uct (erio"ic safety au"its.



ARC FLASH HAZARDSARC FLASH HAZARDS

It is ALWAYS preferable to work on

de-energized equipment.

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Arcflash Pbrhjg Wmv 060509