Belte r r a Cor p or at ion S afety M an ual D oc I D C H S M BE L 2 0 1 7 Pa g e 28 of 538 Doc u m e n t Identif icat ion S E L 005 P age Nu m b e r 6 of 1 4 451 En gi n e e r i n g C on tr ol s Eng ine e rin g c ontrols eli mi na te or c ontrol t he ha z a rd T his i s the pr e f e rr e d method of c ontrol Ex a mpl e s of E ng inee ring c ontrols at the sour c e a r e Elim ination g e tt ing rid of a ha z a rdous job tool prov e s mac hine o r substanc e is t he be st wa y of pr ote c ti ng wor ke r s An e x a mpl e Using me c ha nica l e quipm e nt ra ther than h a ve wo rke rs ma nua ll y li ft lowe r c a rr y e tc S ubst it ut ion doing the sa me w ork i n a less h a z a r dous wa y suc h a s subs ti tut ing a ha z a rdous c he mi c a l wit h a less h a z a rdous one R e plac ing h a z a rdous pr o c e sses w it h less ha z a rdou s proc e sses S e lec ti ng tool s e quipm e nt and ma c hiner y that re q uire less maintena nc e R e plac ing h e a v y a wkw a rdl y sh a p e d loads w it h li g hter lo a ds wit h ha ndles a ndor g o od g rippin g surf a c e s R e de sig n jobs and p roc e sses c a n b e re d e si g ne d t o make them sa f e r f or e x a mpl e Ma king c ontaine rs e a sier to l ift a nd hold P roviding fa il sa fe int e rl oc ks on e quipm e nt door s va lve s e tc C ontroll ing tra ff ic to a vo id colli sions or r e duc e a c c e ss t o a re a s e tc I mprovin g wo rkpla c e li ghti ng ve nti lation and te mper a ture c ontrol P roviding wa rnin g s y ste ms I solation if a h a z a rd c a nnot be e li mi na ted or re p lac e d it c a n som e ti mes b e isol a ted c ontaine d or o the rw ise k e pt aw a y f rom w ork e rs f or e x a mpl e S ound r e duc in g e nc losur e s for nois y e quipm e nt Ne g a ti ve pr e ssure fume hoods i n labor a tor y se tt ing s Eng ine e rin g c ontrols alo ng the p a th B a r rie rs a h a z a rd c a n b e blocke d be for e it r e a c h e s wor ke rs U sua ll y the f urthe r a c ontrol ke e ps a ha z a rd a w a y fr o m wor ke rs the mor e e f fe c ti ve it is Ex a mpl e s S pe c ial c urta ins c a n pre v e nt e y e inj urie s f rom w e l ding a r c r a diation P rope r e quipm e nt g ua rdi ng will prote c t wo rke rs fr om conta c ti ng movi n g pa rts L oc k out s y st e ms ca n iso late e ne r g y sou rc e s du ring r e pa ir a nd maintena n c e Absor pti on a ha z a rd c a n be a bsorbe d b e for e it re a c he s wo rke rs Th e c lose r the a bsorbe r is to t he ha z a rd the be tt e r E x a mp les S ound ba ff les c a n a bsorb noise g e ne r a ted b y mac h iner y W e ldi ng g l a sses a bsorb t he ult ra viol e t l ig ht g e n e r a ted b y we ldi n g Ac ti va ted c a rbon c h a rc o a l ca n be use d to abso rb v olatil e g a s e s g e ne ra ted b y e x pe rime ntal proc e dur e s 452 Adm in istr ative Contr ols AD M W he n e ng ine e rin g c ontro ls ar e not pos sibl e or pr a c ti c a l admini stra ti ve c on trols ar e the ne x t best solut ion for c ontroll ing h a z a rds Admini stra ti ve c ontrols a t t he wor ke r inc lud e S a fe wor k p ra c ti c e s SW P a nd S a fe J ob P roc e du re SJ P de sc ribe how to sa fe t y c ompl e te a job fr om st a rt to finis h a ndor pr ovide sa f e t y pre c a ut ions