Ventilation Basic LI v1 (1)

8/18/2019 Ventilation Basic LI v1 (1)

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PPT-040-01 1

Basic VentilationBureau of Workers’ Compensation

PA Training for Health & Safety(PATHS)


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Course Goals

• To understand the basic conceptof ventilation

• To understand reasons for

ventilation

• To understand and apply properventilation techniques


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!tudent "b#ective

• Be able to define $hat ventilation is• Be able to apply ventilation to different applications

• Be able to deter%ine best %ethod of ventilation

• Be able to %ove air


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Ventilation

•

The process of &chan'in'( orreplacin' air in any space toprovide hi'h quality indoor air

• To)

*e%ove unpleasant s%ells and%oisture

+ntroduce outside air +%prove circulation, etc

• +n firefi'htin', refers to a tacticof creatin' a draft to control therelease of heat and s%o.e


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PPT-040-01 /

*easons for Ventilation

To re%ove or control)

• aardousobno3ious odors• !%o.e and s%o.e odor• "dors• sbestos• Che%icals• Gases• 5u%es

• ParticulatesBurned Popcorn-6'h78ote) There are specific require%ents

for certain conta%inants that requirespecialied trainin' and equip%ent

http://thumbs.ifood.tv/files/images/editor/images/Burnt%20Popcorn.jpg


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Types of Ventilation

• Vertical :ovin' air up and out

• oriontal ;lateral<

:ovin' air out throu'h$indo$s and doors


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:ethods of Ventilation

• :echanical5orced 5ans

Coolin'

>ilution

?3haust Circulation

• 5iltration

!crubbers

• ?3haust !yste%s

Che%ical

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o$ ir :oves

• 8aturalA 8o cost

- >ifficulty controllin'

- +ncreased ti%e to utilie

• :echanical5orced

A ?asy to control direction

- 8eed po$er source

- 5u%es

- Cost


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PPT-040-01

Ventilation !afety

• 8ever use 'asoline po$ered fans inside abuildin', structure or confined space

• :a.e sure fans are 'rounded

• +f a fla%%able at%osphere e3ists %a.e sure

fans are intrinsically safe ;ie e3plosion proof<• ?nsure area safe to set up equip%ent

• Trip haards bloc. off area, $ires, fans


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Ventilation !teps

>eter%ine)

Dhat the proble% is• !%o.e, odor, che%ical, etc

Dhere it is located• Dhat type of structure, buildin' layout, occupancy

Dhat is the cause or source• "ri'in of proble% that needs ventilated

+s it safe for %e• :ain concern) can you do it safely $ithoutendan'erin' yourself or othersE


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Ventilation !teps

+f un.no$n or dan'erous)• !ee. further assistance fro% ?nviron%ental

ealth F !afety ;?!<

• ?%er'ency services ;either public or private

contractors %ay be considered an option<• 11

+f %aterial can be identified and handled in

a safe %anner proceed to the ne3t step 5ollo$ co%pany policy


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Ventilation !teps

+f you can start ventilation)• >eter%ine $here you are 'oin' to direct the

flo$ of air

void conta%inatin' clean areas void directin' into hi'h occupancy area

Dill it be a nuisance or haard to anyone

do$n $indE

+f odors or other conditions are too stron',contact ?! for further evaluation


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PPT-040-01 1

Vapors

• Chec. the correspondin' !afety >ata !heet;!>!< for the product bein' ventilated

• *evie$ HVapor >ensity( listed on !>!

• Vapor >ensity I %easure of a vaporJs $ei'ht$hen co%pared to air ;air assi'ned value of 1<

• >enser vapors tend to sin. to floor level, lessdense vapors tend to rise to ceilin' level


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>irectin' ir 5lo$

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•

"penin' F closin' doors

• "penin' F closin' $indo$s

• an'in' plastic tarps in unconta%inated areas


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>irectin' 5lo$

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• draft is better created $ith the flo$ co%in'in one direction and funnelin' out the oppositeend

• Closin' additional doors or $indo$s $illincrease the flo$ of air out of roo%area

• dditionally, re%ove any screens or curtains

that %ay be in the $ay

• :a.e sure the $ind is not naturally co%in' inthe $ay you intend to e3haust the odor


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>irectin' 5lo$

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• Close off open hall$ays or unaffected areas

6tilie plastic tarps or plastic sheets

!ho$er curtains $ith open hoo.s also $or. Tension rods

>uct tape

To %eet standards, so%e ite%s $ill require

top to be %ore sealed up to preventadditional conta%ination


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KetJs Ventilate

PPT-040-01 1=

!tairs

!tairs

1=PPT-040-01

o$could youventilatethis areaE

Dindo$s

>oors

!tairs

6se 8atural,:echanical,Co%bination

of both


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?3a%ple of !tricter *equire%ents

PPT-040-01 1@

• sbestos sbestos trainin' required

>o not disturb or enter

*equired ite%s)

o !i'na'e

o 8e'ative air %achines

o ir loc.

o

*estricted entryo PP? ;respiratory<


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?valuate the rea

PPT-040-01 1

• ?valuate before allo$in' occupants ;e' students,staff, etc< to return

•

!enses %ay not be the best testin' factorL %ay depend upon $hat is bein' ventilated

M 6se %eters if necessary

M 6tilie so%eone not on site previously

;so%e ite%s %ay desensitie your abilityto s%ell the%<


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!u%%ary

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• Ventilation is not difficult, but does ta.e so%ethin.in' as to $here to %ove conta%inated air

• 8ever %ove conta%inated air into non-conta%inated areas

• +f necessary, %ove occupants out of an areabefore ventilatin'

• >eter%ine the best %ethod for effectiveventilation

• +f %aterial involved is haardous, or you arenot sure) stop and consult ?! for instructions


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Nuestions

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Ventilation Basic LI v1 (1)

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