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 1 90 of 53 8 c onsi de ra ti on g iven t o a p pl y in g e n g ine e rin g c ontr ols t o re duc e noise le v e ls t o be low 85 dB A if possi ble Doc u m e n t Identif icat ion S E L 022 P age Nu m b e r 3 of 7 Doc u m e n t C r e ation Dat e Ma y 10 2011 Im p le m e n tat ion Dat e o n Re vised Doc u m e n t F e bru a r y 2 2016 De pe ndin g on the c ir c um stanc e s poss ibl e e n g ine e ring c ont rols c ould i nc lude ba rr i e rs vibr a ti on da mpi ng sour c e isol a ti on a nd sound a bsorbin g e n c losure s 32 Admini stra ti ve C ontrols W he re e n g inee rin g c ontr ols ar e not pra c ti c a l or f e a sibl e or u na ble to r e duc e noise le ve ls below 85 dB A a dmi nist ra ti ve c o ntrols s uc h a s c ha n ge s in work pr oc e dure s re sc h e duli ng of no is y a c ti vit y o r de c re a sin g the dur a ti on o f e x posure shoul d be c on sider e d C lea rl y visi ble w a rnin g s ig ns m ust be posted a t t h e a pproa c he s to an a re a whe re sound l e v e ls re g ul a rl y e x c e e d 85 dB A The se wa rnin g sig ns m us t cle a rl y indi c a te th a t t he use of he a ring pr otec ti on is m a nda tor y o r pr ovide t he max im um e x posure ti me fr om Ta ble 1 w h e re a n in divi dua l m a y be in t he a r e a without he a rin g prote c ti on I n si tuations whe re a pi e c e of e quipm e nt or ma c hi ne r y pre s e nts a noise ha z a rd a si g n mus t be a f fix e d to the e quipm e nt i n a c lea rl y visi ble loc a ti on indi c a t ing that the ope ra tor mus t we a r a pp ropr iate h e a ring prote c ti on 34 He a rin g P rote c ti on W he re other hier a r c h y of c ontrols i s not pra c ti c a bl e he a rin g p rote c ti on mus t be w orn b y wor k e rs w h e re noise e x posure s c ould ex c e e d the l e ve ls g iven in Ta ble 1 Re g a rdl e ss of t he l im it s in Table 1 he a r ing prote c ti on shoul d be a va i lable to wor ke rs on re que st whe re noise le v e ls ex c e e d 80 d B A 33 Educ a ti on a nd Tr a ini ng All noi se e x pose d wor ke rs w ho a r e re quir e d to we a r he a rin g prote c ti on mu st attend a tra ini n g se ssi on with t he he a lt h a nd sa f e t y c oo rdina tor This t ra ini ng se ssi on will c ove r 331 Ha z a rds of e x c e ssi ve noi se 332 R e sult s of noise surve y s i n the w ork a r e a 333 Noise c o ntrol st ra te g ies 334 The prop e r s e lec ti on a nd use of he a ring pr otec ti on