Ha nd & Powe r T ool Sa fe ty @ Aa rdva rk Cla sse s Pre fa - - PowerPoint PPT Presentation

Ha nd & Powe r T

• ol

Sa fe ty

@Aar dvar k Classe s

Pre fa c e

T his pre se nta tio n is inte nde d to pro vide a g e ne ric , no n- e xha ustive o ve rvie w o f a pa rtic ula r sta nda rds-re la te d to pic . T his pre se nta tio n do e s no t itse lf a lte r o r de te rmine c o mplia nc e re spo nsib ilitie s, whic h a re se t fo rth in OSHA sta nda rds the mse lve s a nd the Oc c upa tio na l Sa fe ty a nd He a lth Ac t o f 1970. Mo re o ve r, b e c a use inte rpre ta tio ns a nd e nfo rc e me nt po lic y c ha ng e o ve r time , fo r a dditio na l g uida nc e o n OSHA c o mplia nc e re q uire me nts, the re a de r sho uld c o nsult c urre nt a dministra tive inte rpre ta tio ns a nd de c isio ns b y the Oc c upa tio na l Sa fe ty a nd He a lth Re vie w Co mmissio n a nd the c o urts.

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Introduc tion

T his pre se nta tio n is de sig ne d to pre se nt to e mplo ye e s a nd e mplo ye rs a summa ry o f the b a sic sa fe ty pro c e dure s a nd sa fe g ua rds a sso c ia te d with ha nd a nd po rta b le po we r to o ls. Ma te ria l in this pre se nta tio n is b a se d o n the sta nda rds o f the Oc c upa tio na l Sa fe ty a nd He a lth Administra tio n (OSHA); this pre se nta tio n, ho we ve r, sho uld no t b e c o nside re d a s a sub stitute fo r the full OSHA sa fe ty a nd he a lth sta nda rds.

@ Aa rdva rk Cla sse s Pa g e 2 o f 27

Introduc tion (c ont.)

E mplo ye e s who use ha nd a nd po we r to o ls a nd a re e xpo se d to the ha za rds

• f fa lling , flying , a b ra sive , a nd spla shing o b je c ts, o r to ha rmful dusts, fume s,

mists, va po rs, o r g a se s must b e pro vide d with the a ppro pria te pe rso na l pro te c tive e q uipme nt. All e le c tric a l c o nne c tio ns fo r the se to o ls must b e suita b le fo r the type o f to o l a nd the wo rking c o nditio ns (we t, dusty, fla mma b le va po rs). Whe n a te mpo ra ry po we r so urc e is use d fo r c o nstruc tio n a g ro und-fa ult c irc uit inte rrupte r sho uld b e use d. E mplo ye e s sho uld b e tra ine d in the pro pe r use o f a ll to o ls. Wo rke rs sho uld b e a b le to re c o g nize the ha za rds a sso c ia te d with the diffe re nt type s o f to o ls a nd the sa fe ty pre c a utio ns ne c e ssa ry. F ive b a sic sa fe ty rule s c a n he lp pre ve nt ha za rds a sso c ia te d with the use o f ha nd a nd po we r to o ls:

• K

e e p a ll to o ls in g o o d c o nditio n with re g ula r ma inte na nc e .

• Use the rig ht to o l fo r the jo b .
• E

xa mine e a c h to o l fo r da ma g e b e fo re use a nd do no t use da ma g e d to o ls.

• Ope ra te to o ls a c c o rding to the ma nufa c ture rs’ instruc tio ns.
• Pro vide a nd use pro pe rly the rig ht pe rso na l pro te c tive e q uipme nt.

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Introduc tion (c ont.)

E mplo ye e s a nd e mplo ye rs sho uld wo rk to g e the r to e sta b lish sa fe wo rking pro c e dure s. I f a ha za rdo us situa tio n is e nc o unte re d, it sho uld b e b ro ug ht imme dia te ly to the a tte ntio n o f the pro pe r individua l fo r ha za rd a b a te me nt. T he fo llo wing se c tio ns ide ntify va rio us type s o f ha nd a nd po we r to o ls a nd the ir po te ntia l ha za rds. T he y a lso ide ntify wa ys to pre ve nt wo rke r injury thro ug h pro pe r use o f the to o ls a nd thro ug h the use o f a ppro pria te pe rso na l pro te c tive e q uipme nt.

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What Ar e the Hazar ds of Hand T

• ols?

Ha nd to o ls a re to o ls tha t a re po we re d ma nua lly. Ha nd to o ls inc lud e a nything fro m a xe s to wre nc he s. T he g re a te st ha za rd s po se d b y ha nd to o ls re sult fro m misuse a nd impro pe r ma inte na nc e . So me e xa mple s inc lud e the fo llo wing :

• If a c hise l is use d a s a sc re wd rive r, the tip o f the c hise l ma y b re a k a nd fly o ff, hitting

the use r o r o the r e mplo ye e s.

• If a wo o d e n ha nd le o n a to o l, suc h a s a ha mme r o r a n a xe , is lo o se , splinte re d , o r

c ra c ke d , the he a d o f the to o l ma y fly o ff a nd strike the use r o r o the r e mplo ye e s.

• If the ja ws o f a wre nc h a re sprung , the wre nc h mig ht slip.
• If impa c t to o ls suc h a s c hise ls, we d g e s, o r d rift pins ha ve mushro o me d he a d s, the

he a d s mig ht sha tte r o n impa c t, se nd ing sha rp fra g me nts flying to wa rd the use r o r

• the r e mplo ye e s.

Appro pria te pe rso na l pro te c tive e q uipme nt suc h a s sa fe ty g o g g le s a nd g lo ve s must b e wo rn to pro te c t a g a inst ha za rd s tha t ma y b e e nc o unte re d while using ha nd to o ls. Wo rkpla c e flo o rs sha ll b e ke pt a s c le a n a nd d ry a s po ssib le to pre ve nt a c c id e nta l slips with o r a ro und d a ng e ro us ha nd to o ls. Po we r to o ls must b e fitte d with g ua rd s a nd sa fe ty switc he s; the y a re e xtre me ly ha za rd o us whe n use d impro pe rly.

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Who is Re sponsible for Safe T

• ols?

T he e mplo ye r is re spo nsib le fo r the sa fe c o nditio n o f to o ls a nd e q uipme nt use d b y e mplo ye e s. E mplo ye rs sha ll no t issue o r pe rmit the use o f unsa fe ha nd to o ls. E mplo ye e s sho uld b e tra ine d in the pro pe r use a nd ha ndling o f to o ls a nd e q uipme nt. E mplo ye e s, whe n using sa w b la de s, knive s, o r o the r to o ls, sho uld dire c t the to o ls a wa y fro m a isle a re a s a nd a wa y fro m o the r e mplo ye e s wo rking in c lo se pro ximity. K nive s a nd sc isso rs must b e sha rp; dull to o ls c a n c a use mo re ha za rds tha n sha rp o ne s. Cra c ke d sa w b la de s must b e re mo ve d fro m se rvic e . Wre nc he s must no t b e use d whe n ja ws a re sprung to the po int tha t slippa g e o c c urs. Impa c t to o ls suc h a s drift pins, we dg e s, a nd c hise ls must b e ke pt fre e o f mushro o me d he a ds. T he wo o de n ha ndle s

• f to o ls must no t b e splinte re d.

Iro n o r ste e l ha nd to o ls ma y pro duc e spa rks tha t c a n b e a n ig nitio n so urc e a ro und fla mma b le sub sta nc e s. Whe re this ha za rd e xists, spa rk-re sista nt to o ls ma de o f no n-fe rro us ma te ria ls sho uld b e use d whe re fla mma b le g a se s, hig hly vo la tile liq uids, a nd o the r e xplo sive sub sta nc e s a re sto re d o r use d.

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Ge ne ra l Pre c a utions

T

• pre ve nt ha za rds a sso c ia te d with the use o f po we r to o ls,

wo rke rs sho uld o b se rve the fo llo wing g e ne ra l pre c a utio ns:

• Se t the to o l do wn b e fo re e ne rg izing (plug g ing -in) the to o l.
• Ne ve r c a rry a to o l b y the c o rd o r ho se .
• Ne ve r ya nk the c o rd o r the ho se to disc o nne c t it fro m the

re c e pta c le .

• K

e e p c o rds a nd ho se s a wa y fro m he a t, o il, a nd sha rp e dg e s.

• Disc o nne c t to o ls whe n no t using the m, b e fo re se rvic ing a nd

c le a ning the m, a nd whe n c ha ng ing a c c e sso rie s suc h a s b la de s, b its, a nd c utte rs.

• K

e e p a ll pe o ple no t invo lve d with the wo rk a t a sa fe dista nc e fro m the wo rk a re a .

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• Se c ure wo rk with c la mps o r a vise , fre e ing b o th ha nds to
• pe ra te the to o l.
• Avo id a c c ide nta l sta rting . Do no t ho ld fing e rs o n the switc h

b utto n while c a rrying a plug g e d-in to o l.

• Ma inta in to o ls with c a re ; ke e p the m sha rp a nd c le a n fo r b e st

pe rfo rma nc e .

• F
• llo w instruc tio ns in the use r’ s ma nua l fo r lub ric a ting a nd

c ha ng ing a c c e sso rie s.

• Be sure to ke e p g o o d fo o ting a nd ma inta in g o o d b a la nc e

whe n o pe ra ting po we r to o ls.

• We a r pro pe r a ppa re l fo r the ta sk. L
• o se c lo thing , tie s, o r

je we lry c a n b e c o me c a ug ht in mo ving pa rts.

• Re mo ve a ll da ma g e d po rta b le e le c tric to o ls fro m use a nd ta g

the m: “Do No t Use .”

Ge ne ra l Pre c a utions (c ont.)

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Sa fe ty Gua rds

T he e xpo se d mo ving pa rts o f po we r to o ls ne e d to b e sa fe g ua rde d. Be lts, g e a rs, sha fts, pulle ys, spro c ke ts, spindle s, drums, flywhe e ls, c ha ins, o r o the r re c ipro c a ting , ro ta ting , o r mo ving pa rts o f e q uipme nt must b e g ua rde d. Ma c hine g ua rds, a s a ppro pria te , must b e pro vide d to pro te c t the o pe ra to r a nd o the rs fro m the fo llo wing :

• Po int o f o pe ra tio n.
• In-running nip po ints.
• Ro ta ting pa rts.
• F

lying c hips a nd spa rks. Sa fe ty g ua rds must ne ve r b e re mo ve d whe n a to o l is b e ing use d. Po rta b le c irc ula r sa ws ha ving a b la de g re a te r tha n 2 inc he s in dia me te r must b e e q uippe d a t a ll time s with g ua rds. An uppe r g ua rd must c o ve r the e ntire b la de o f the sa w. A re tra c ta b le lo we r g ua rd must c o ve r the te e th o f the sa w, e xc e pt whe re it ma ke s c o nta c t with the wo rk ma te ria l. T he lo we r g ua rd must a uto ma tic a lly re turn to the c o ve ring po sitio n whe n the to o l is withdra wn fro m the wo rk ma te ria l.

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Ope ra ting Controls a nd Switc he s

T he fo llo wing ha nd-he ld po we r to o ls must b e e q uippe d with a c o nsta nt-pre ssure switc h o r c o ntro l tha t shuts o ff the po we r whe n pre ssure is re le a se d: drills; ta ppe rs; fa ste ne r drive rs; ho rizo nta l, ve rtic a l, a nd a ng le g rinde rs; disc sa nde rs; b e lt sa nde rs; re c ipro c a ting sa ws; sa b e r sa ws, sc ro ll sa ws, a nd jig sa ws a nd

• the r simila r to o ls.

T he fo llo wing ha nd-he ld po we r to o ls must b e e q uippe d with e ithe r a po sitive “o n-o ff” c o ntro l switc h, a c o nsta nt pre ssure switc h, o r a “lo c k-o n” c o ntro l: disc sa nde rs, g rinde rs, pla te n sa nde rs, ro ute rs, pla ne rs, la mina te trimme rs, nib b le rs a nd she a rs. I t is re c o mme nde d tha t the c o nsta nt-pre ssure c o ntro l switc h b e re g a rde d a s the pre fe rre d de vic e . Othe r ha nd-he ld po we r to o ls suc h a s c irc ula r sa ws, c ha in sa ws, a nd pe rc ussio n to o ls with no me a ns o f ho lding a c c e sso rie s se c ure ly must b e e q uippe d with a c o nsta nt-pre ssure switc h.

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What Ar e the T ypes of P

• wer

T

• ols?

T he type s o f po we r to o ls a re de te rmine d b y the ir po we r so urc e :

• Ha nd (Ma nua l)
• E

le c tric

• Pne uma tic
• L

iq uid F ue l

• Hydra ulic
• Po wde r-Ac tua te d

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Ha nd (Ma nua l) T

• ols

Ha nd (ma nua l) to o ls ne e d no e xte rna l po we r so urc e . Ha nd (ma nua l) to o ls inc lude a b ro a d ra ng e o f to o ls fro m e xtre me ly simple to mo re c o mple x, suc h a s: – Ha mme rs – Sa ws – Sc re wdrive rs – Sho ve ls a nd Spa de s – Bull-flo a ts – L e ve ls – Pry Ba rs – Sc isso rs/ She e rs/ K nive s

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E le c tric T

• ols

E mplo ye e s using e le c tric to o ls must b e a wa re o f se ve ra l da ng e rs. Amo ng the mo st se rio us ha za rds a re e le c tric a l b urns a nd sho c ks. E le c tric a l sho c ks, whic h c a n le a d to injurie s suc h a s he a rt fa ilure a nd b urns, a re a mo ng the ma jo r ha za rds a sso c ia te d with e le c tric po we re d to o ls. Unde r c e rta in c o nditio ns, e ve n a sma ll a mo unt o f e le c tric c urre nt c a n re sult in fib rilla tio n o f the he a rt a nd de a th. An e le c tric sho c k a lso c a n c a use the e mplo ye e to fa ll o ff a la dde r o r o the r e le va te d wo rk surfa c e a nd b e injure d due to the fa ll. T

• pro te c t the e mplo ye e fro m sho c k a nd b urns, e le c tric to o ls must ha ve a

thre e -wire c o rd with a g ro und a nd b e plug g e d into a g ro unde d re c e pta c le , b e do ub le insula te d o r b e po we re d b y a lo w-vo lta g e iso la tio n tra nsfo rme r. T hre e -wire c o rds c o nta in two c urre nt-c a rrying c o nduc to rs a nd a g ro unding c o nduc to r. Any time a n a da pte r is use d to a c c o mmo da te a two -ho le re c e pta c le , the a da pte r wire must b e a tta c he d to a kno wn g ro und. T he third pro ng must ne ve r b e re mo ve d fro m the plug . Do ub le -insula te d to o ls a re a va ila b le tha t pro vide pro te c tio n a g a inst e le c tric a l sho c k witho ut third- wire g ro unding . On do ub le -insula te d to o ls, a n inte rna l la ye r o f pro te c tive insula tio n c o mple te ly iso la te s the e xte rna l ho using o f the to o l.

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E le c tric T

• ols (c ont.)

T he fo llo wing g e ne ra l pra c tic e s sho uld b e fo llo we d whe n using e le c tric to o ls:

• Ope ra te e le c tric to o ls within the ir de sig n limita tio ns.
• Use g lo ve s a nd a ppro pria te sa fe ty fo o twe a r whe n using

e le c tric to o ls.

• Sto re e le c tric to o ls in a dry pla c e whe n no t in use .
• Do no t use e le c tric to o ls in da mp o r we t lo c a tio ns unle ss the y

a re a ppro ve d fo r tha t purpo se .

• K

e e p wo rk a re a s we ll lig hte d whe n o pe ra ting e le c tric to o ls.

• E

nsure tha t c o rds fro m e le c tric to o ls do no t pre se nt a tripping ha za rd. I n the c o nstruc tio n industry, e mplo ye e s who use e le c tric to o ls must b e pro te c te d b y g ro und-fa ult c irc uit inte rrupte rs o r a n a ssure d e q uipme nt-g ro unding c o nduc to r pro g ra m.

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E le c tric T

• ols (c ont.)

Injur y/ Illne ss Pr e ve ntion:

• Ope ra te e le c tric to o ls within the limits o f the ir de sig n
• Do no t ho ld the e le c tric a l to o l while it is b e ing plug g e d in
• Do no t use e le c tric a l to o ls in da mp a nd / o r we t a re a s
• Re mo ve a ll da ma g e d po rta b le e le c tric to o ls fro m use
• E

nsure tha t e le c tric a l c o rds do no t pre se nt tripping ha za rds

• Use g lo ve s a nd a ppro pria te sa fe ty fo o twe a r whe n using

e le c tric to o ls

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Por table Abr asive Whe e l T

• ols

Po rta b le a b ra sive g rinding , c utting , po lishing , a nd wire b uffing whe e ls c re a te spe c ia l sa fe ty pro b le ms b e c a use the y ma y thro w o ff flying fra g me nts. Ab ra sive whe e l to o ls must b e e q uippe d with g ua rds tha t:

• Co ve r the spindle e nd, nut a nd fla ng e pro je c tio ns
• Ma inta in pro pe r a lig nme nt with the whe e l
• Do no t e xc e e d the stre ng th o f the fa ste ning s

Be fo re a n a b ra sive whe e l is mo unte d, it must b e inspe c te d c lo se ly fo r da ma g e a nd sho uld b e so und- o r ring -te ste d to e nsure tha t it is fre e fro m c ra c ks o r de fe c ts. T

• te st, whe e ls sho uld b e ta ppe d g e ntly

with a lig ht, no n-me ta llic instrume nt. I f the whe e ls so und c ra c ke d o r de a d, the y must no t b e use d b e c a use the y c o uld fly a pa rt in

• pe ra tio n. A sta b le a nd unda ma g e d whe e l, whe n ta ppe d, will g ive

a c le a r me ta llic to ne o r “ring .”

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P

• r

table Abr asive Wheel T

• ols (cont.)

T

• pre ve nt a n a b ra sive whe e l fro m c ra c king , it must fit fre e ly o n the

spindle . T he spindle nut must b e tig hte ne d e no ug h to ho ld the whe e l in pla c e witho ut disto rting the fla ng e . Alwa ys fo llo w the ma nufa c ture r’ s re c o mme nda tio ns. T a ke c a re to e nsure tha t the spindle spe e d o f the ma c hine will no t e xc e e d the ma ximum

• pe ra ting spe e d ma rke d o n the whe e l.

An a b ra sive whe e l ma y disinte g ra te o r e xplo de during sta rt-up. Allo w the to o l to c o me up to o pe ra ting spe e d prio r to g rinding o r c utting . T he e mplo ye e sho uld ne ve r sta nd in the pla ne o f ro ta tio n o f the whe e l a s it a c c e le ra te s to full o pe ra ting spe e d. Po rta b le g rinding to o ls ne e d to b e e q uippe d with sa fe ty g ua rds to pro te c t wo rke rs no t

• nly fro m the mo ving whe e l surfa c e , b ut a lso fro m flying fra g me nts in

c a se o f whe e l b re a ka g e .

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Pne uma tic T

• ols

Pne uma tic to o ls a re po we re d b y c o mpre sse d a ir a nd inc lude c hippe rs, drills, na ile rs, ha mme rs, a nd sa nde rs. T he re a re se ve ra l da ng e rs a sso c ia te d with the use o f pne uma tic to o ls. F irst a nd fo re mo st is the da ng e r o f g e tting hit b y

• ne o f the to o l’ s a tta c hme nts o r b y so me kind o f fa ste ne r the wo rke r is using

with the to o l. Pne uma tic to o ls must b e c he c ke d to se e tha t the to o ls a re fa ste ne d se c ure ly to the a ir ho se to pre ve nt the m fro m b e c o ming disc o nne c te d. A sho rt wire

• r po sitive lo c king de vic e a tta c hing the a ir ho se to the to o l must a lso b e

use d a nd will se rve a s a n a dde d sa fe g ua rd. If a n a ir ho se is mo re tha n 1/ 2-inc h in dia me te r, a sa fe ty e xc e ss flo w va lve must b e insta lle d a t the so urc e o f the a ir supply to re duc e pre ssure in c a se o f ho se fa ilure . In g e ne ra l, the sa me pre c a utio ns sho uld b e ta ke n with a n a ir ho se tha t a re re c o mme nde d fo r e le c tric c o rds, b e c a use the ho se is sub je c t to the sa me kind o f da ma g e o r a c c ide nta l striking , a nd b e c a use it a lso pre se nts tripping ha za rds.

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Pne uma tic T

• ols (c ont.)

Whe n using pne uma tic to o ls, a sa fe ty c lip o r re ta ine r must b e insta lle d to pre ve nt a tta c hme nts suc h a s c hise ls o n a c hipping ha mme r fro m b e ing e je c te d during to o l o pe ra tio n. Pne uma tic to o ls tha t sho o t na ils, rive ts, sta ple s, o r simila r fa ste ne rs a nd

• pe ra te a t pre ssure s mo re tha n 100 po unds pe r sq ua re inc h,

must b e e q uippe d with a spe c ia l de vic e to ke e p fa ste ne rs fro m b e ing e je c te d, unle ss the muzzle is pre sse d a g a inst the wo rk surfa c e . Airle ss spra y g uns tha t a to mize pa ints a nd fluids a t pre ssure s o f 1,000 po unds o r mo re pe r sq ua re inc h must b e e q uippe d with a uto ma tic o r visib le ma nua l sa fe ty de vic e s tha t will pre ve nt pulling the trig g e r until the sa fe ty de vic e is ma nua lly re le a se d.

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What Ar e the Dange r s of Pne umatic T

• ols?

E ye pro te c tio n is re q uire d, a nd he a d a nd fa c e pro te c tio n is re c o mme nde d fo r e mplo ye e s wo rking with pne uma tic to o ls. Sc re e ns must a lso b e se t up to pro te c t ne a rb y wo rke rs fro m b e ing struc k b y flying fra g me nts a ro und c hippe rs, rive ting g uns, sta ple rs, o r a ir drills. Co mpre sse d a ir g uns sho uld ne ve r b e po inte d to wa rd a nyo ne . Wo rke rs sho uld ne ve r “de a d-e nd” the m a g a inst the mse lve s o r a nyo ne e lse . A c hip g ua rd must b e use d whe n c o mpre sse d a ir is use d fo r c le a ning . Use o f he a vy ja c kha mme rs c a n c a use fa tig ue a nd stra ins. He a vy rub b e r g rips re duc e the se e ffe c ts b y pro viding a se c ure ha ndho ld. Wo rke rs

• pe ra ting a ja c kha mme r must we a r sa fe ty g la sse s a nd sa fe ty sho e s tha t

pro te c t the m a g a inst injury if the ja c kha mme r slips o r fa lls. A fa c e shie ld a lso sho uld b e use d. No ise is a no the r ha za rd a sso c ia te d with pne uma tic to o ls. Wo rking with no isy to o ls suc h a s ja c kha mme rs re q uire s pro pe r, e ffe c tive use o f a ppro pria te he a ring pro te c tio n.

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L iquid F ue le d T

• ols

F ue l-po we re d to o ls a re usua lly o pe ra te d with g a so line . T he mo st se rio us ha za rd a sso c ia te d with the use o f fue l-po we re d to o ls c o me s fro m fue l va po rs tha t c a n b urn o r e xplo de a nd a lso g ive

• ff da ng e ro us e xha ust fume s. T

he wo rke r must b e c a re ful to ha ndle , tra nspo rt, a nd sto re g a s o r fue l o nly in a ppro ve d fla mma b le liq uid c o nta ine rs, a c c o rding to pro pe r pro c e dure s fo r fla mma b le liq uids. Be fo re re filling a fue l-po we re d to o l ta nk, the use r must shut do wn the e ng ine a nd a llo w it to c o o l to pre ve nt a c c ide nta l ig nitio n o f ha za rdo us va po rs. Whe n a fue l-po we re d to o l is use d inside a c lo se d a re a , e ffe c tive ve ntila tio n a nd/ o r pro pe r re spira to rs suc h a s a tmo sphe re -supplying re spira to rs must b e utilize d to a vo id b re a thing c a rb o n mo no xide . F ire e xting uishe rs must a lso b e a va ila b le in the a re a .

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Hydra ulic Powe r T

• ols

T he fluid use d in hydra ulic po we r to o ls must b e a n a ppro ve d fire -re sista nt fluid a nd must re ta in its o pe ra ting c ha ra c te ristic s a t the mo st e xtre me te mpe ra ture s to whic h it will b e e xpo se d. T he e xc e ptio n to fire -re sista nt fluid invo lve s a ll hydra ulic fluids use d fo r the insula te d se c tio ns o f de rric k truc ks, a e ria l lifts, a nd hydra ulic to o ls tha t a re use d o n o r a ro und e ne rg ize d line s. T his hydra ulic fluid sha ll b e o f the insula ting type . T he ma nufa c ture r’ s re c o mme nde d sa fe o pe ra ting pre ssure fo r ho se s, va lve s, pipe s, filte rs, a nd o the r fitting s must no t b e e xc e e de d. All ja c ks—inc luding le ve r a nd ra tc he t ja c ks, sc re w ja c ks, a nd hydra ulic ja c ks—must ha ve a sto p indic a to r, a nd the sto p limit must no t b e e xc e e de d. Also , the ma nufa c ture r’ s lo a d limit must b e pe rma ne ntly ma rke d in a pro mine nt pla c e o n the ja c k, a nd the lo a d limit must no t b e e xc e e de d. A ja c k sho uld ne ve r b e use d to suppo rt a lifte d lo a d. Onc e the lo a d ha s b e e n lifte d, it must imme dia te ly b e b lo c ke d up. Put a b lo c k unde r the b a se

• f the ja c k whe n the fo unda tio n is no t firm, a nd pla c e a b lo c k b e twe e n the

ja c k c a p a nd lo a d if the c a p mig ht slip.

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Prope r Ja c k Ope ra tion

T

• se t up a ja c k, ma ke c e rta in o f the fo llo wing :
• T

he b a se o f the ja c k re sts o n a firm, le ve l surfa c e

• T

he ja c k is c o rre c tly c e nte re d

• T

he ja c k he a d b e a rs a g a inst a le ve l surfa c e

• T

he lift fo rc e is a pplie d e ve nly Pro pe r ma inte na nc e o f ja c ks is e sse ntia l fo r sa fe ty. All ja c ks must b e lub ric a te d re g ula rly. I n a dditio n, e a c h ja c k must b e inspe c te d a c c o rding to the fo llo wing sc he dule :

• F
• r ja c ks use d c o ntinuo usly o r inte rmitte ntly a t o ne site —inspe c te d

a t le a st o nc e e ve ry 6 mo nths

• F
• r ja c ks se nt o ut o f the sho p fo r spe c ia l wo rk—inspe c te d whe n

se nt o ut a nd inspe c te d whe n re turne d

• F
• r ja c ks sub je c te d to a b no rma l lo a ds o r sho c k—inspe c te d b e fo re

use a nd imme dia te ly the re a fte r.

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Powde r

• Ac tua te d T
• ols

Po wde r-a c tua te d to o ls o pe ra te like a lo a de d g un a nd must b e tre a te d with e xtre me c a utio n. In fa c t, the y a re so da ng e ro us tha t the y must b e o pe ra te d

• nly b y spe c ia lly tra ine d e mplo ye e s.

Whe n using po wde r-a c tua te d to o ls, a n e mplo ye e must we a r suita b le e a r, e ye , a nd fa c e pro te c tio n. T he use r must se le c t a po wde r le ve l—hig h o r lo w ve lo c ity—tha t is a ppro pria te fo r the po wde r-a c tua te d to o l a nd ne c e ssa ry to do the wo rk witho ut e xc e ssive fo rc e . T he muzzle e nd o f the to o l must ha ve a pro te c tive shie ld o r g ua rd c e nte re d pe rpe ndic ula r to a nd c o nc e ntric with the b a rre l to c o nfine a ny fra g me nts o r pa rtic le s tha t a re pro je c te d whe n the to o l is fire d. A to o l c o nta ining a hig h- ve lo c ity lo a d must b e de sig ne d no t to fire unle ss it ha s this kind o f sa fe ty de vic e . T

• pre ve nt the to o l fro m firing a c c ide nta lly, two se pa ra te mo tio ns a re

re q uire d fo r firing . T he first mo tio n is to b ring the to o l into the firing po sitio n, a nd the se c o nd mo tio n is to pull the trig g e r. T he to o l must no t b e a b le to

• pe ra te until it is pre sse d a g a inst the wo rk surfa c e with a fo rc e o f a t le a st 5

po unds g re a te r tha n the to ta l we ig ht o f the to o l.

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Powde r

• Ac tuate d T
• ols (c ont.)

If a po wd e r-a c tua te d to o l misfire s, the use r must ho ld the to o l in the o pe ra ting po sitio n fo r a t le a st 30 se c o nd s b e fo re trying to fire it a g a in. If it still will no t fire , the use r must ho ld the to o l in the o pe ra ting po sitio n fo r a no the r 30 se c o nd s a nd the n c a re fully re mo ve the lo a d in a c c o rd a nc e with the ma nufa c ture r’ s instruc tio ns. T his pro c e d ure will ma ke the fa ulty c a rtrid g e le ss like ly to e xplo d e . T he b a d c a rtrid g e sho uld the n b e put in wa te r imme d ia te ly a fte r re mo va l. If the to o l d e ve lo ps a d e fe c t d uring use , it sho uld b e ta g g e d a nd must b e ta ke n o ut o f se rvic e imme d ia te ly until it is pro pe rly re pa ire d . Sa fe ty pre c a utio ns tha t must b e fo llo we d whe n using po wd e r-a c tua te d to o ls inc lud e the fo llo wing :

• Do no t use a to o l in a n e xplo sive o r fla mma b le a tmo sphe re .
• Inspe c t the to o l b e fo re using it to d e te rmine tha t it is c le a n, tha t a ll mo ving pa rts
• pe ra te fre e ly, a nd tha t the b a rre l is fre e fro m o b struc tio ns a nd ha s the pro pe r

shie ld , g ua rd , a nd a tta c hme nts re c o mme nd e d b y the ma nufa c ture r.

• Do no t lo a d the to o l unle ss it is to b e use d imme d ia te ly.
• Do no t le a ve a lo a d e d to o l una tte nd e d , e spe c ia lly whe re it wo uld b e a va ila b le to

una utho rize d pe rso ns.

• K

e e p ha nd s c le a r o f the b a rre l e nd .

• Ne ve r po int the to o l a t a nyo ne .

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Powde r

• Ac tua te d T
• ols (c ont.)

Safe ty Pr e c autions (c ont.)

Whe n using po wde r-a c tua te d to o ls to a pply fa ste ne rs, se ve ra l a dditio na l pro c e dure s must b e fo llo we d:

• Do no t fire fa ste ne rs into ma te ria l tha t wo uld a llo w the

fa ste ne rs to pa ss thro ug h to the o the r side .

• Do no t drive fa ste ne rs into ve ry ha rd o r b rittle ma te ria l tha t

mig ht c hip o r spla tte r, o r ma ke the fa ste ne rs ric o c he t.

• Alwa ys use a n a lig nme nt g uide whe n sho o ting fa ste ne rs into

e xisting ho le s

• Whe n using a hig h-ve lo c ity to o l, do no t drive fa ste ne rs mo re

tha n 3 inc he s fro m a n unsuppo rte d e dg e o r c o rne r o f ma te ria l suc h a s b ric k o r c o nc re te .

• Whe n using a hig h ve lo c ity to o l, do no t pla c e fa ste ne rs in ste e l

a ny c lo se r tha n 1/ 2 inc h fro m a n unsuppo rte d c o rne r e dg e unle ss a spe c ia l g ua rd, fixture , o r jig is use d.

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Conc lusion

T ha nk yo u fo r se le c ting @ Aa rdva rk Cla sse s to pro vide the c o ntinuing e duc a tio n c re dits yo u ne e d to fulfill yo ur lic e nsing re q uire me nts. We ho pe yo u fo und this pre se nta tio n he lpful in ma king yo u a b e tte r tra de sma n. T his pre se nta tio n is a va ila b le to yo u a nytime in the e ve nt yo u ne e d to re fe re nc e it in the future . Ag a in, tha nk yo u fo r re vie wing @ Aa rdva rk Cla sse s pre se nta tio n

• f:

“Hand & Po we r T

• o l Safe ty”

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