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 53 of 53 8 Doc u m e n t Identif icat ion S E L 018 P age Nu m b e r 3 of 1 9 Doc u m e n t C r e ation Dat e J a nua r y 1 2013 Im p le m e n tat ion Dat e o n Re vised Doc u m e n t Apr il 26 2016 40 DE F INITIO N S B ar r icade A ph y sica l obst ruc ti on c re a t e d with t a pe s scr e e ns or c one s to wa rn of a nd li mi t ac c e ss to a ha z a rdous a re a Conf in e d S p ac e Code of P r ac ti c e A w ritten se t of pr oc e dur e s de v e lope d to elim inate or c ontrol t he ha z a rds a nti c ipate d in a c onfine d spa c e e nt r y E n tr y An y a c ti on that bre a ks t he plan e of the c onfine d spa c e ie c omp lete or pa rtia l ent r y suc h a s e ntr y o f onl y the e mpl o y e e s he a d Hazar d ou s At m osp h e r e An a tm osphe re that is ox y g e n de fi c ient a ndor c ontains e x plosi ve g a se s or tox ic c ontaminants i n a c onc e ntra ti on that ma y e x c e e d p e rmiss ibl e e x posure li mi ts Hot Wor k An y wor k i nvolvi ng the use of a fla me or a potential sourc e of ig nit ion i nc ludi ng C utt ing we ldi ng bu rning a ir g o u g ing rive ti ng he a t shrinki ng d rilli ng grinding c hippi n g wor kin g with ex plosi ve a c tuate d tool s The use of no n c lassifie d e lec tric a l equipment The int roduc ti on of a c ombus ti on e ng ine to a w ork p roc e ss a nd An y othe r w ork w h e r e a fla me is used or sp a rks a re prod u c e d L E L lo w e r e xp losi ve li m it The mi nim um con c e ntra ti on of ga s va pour or du st or a n y c ombi na ti on of the se in a ir a t ambien t t e mper a ture s a t which f l a me pr opa ga ti on will oc c ur in the p re se n c e of a sourc e of i g nit ion M on it or in g C onti nuous or pe riodic testing of a n a tm os phe re in a c onfine d spa c e OE L oc c u p ation al exp osu r e li m it The max im um air borne c on c e ntra t ion of subst a nc e s that wo rke rs ma y b e e x pose d to for sp e c ific len g ths of ti me a s de fine d b y the A lbe rta O c c upa ti ona l H e a lt h a nd S a fe t y C od e Re sc u e The p roc e ss of a pe rson or p e rsons r e movi ng a n e mpl o y e e f rom a ha z a rdous e nvironmen t while pr otec ti n g their ow n sa fe t y a nd noti f y in g a ut horiti e s of a n e me r g e nc y sit ua ti on S T E L short te r m e xp o su r e li m it The max im um c onc e ntra ti on of subs tanc e s that wor k e rs ma y be e x po se d to for 15 mi nutes c onti nuousl y T e n d in g Wor k e r Emp lo y e e s r e quire d to s tand b y outs ide a c onfine d sp a c e a nd re main in const a nt c omm unica ti on with emplo y e e s insi de the c onfin e d spa c e T e stin g Atmos phe ric inspec ti on of a c on fine d s pa c e b e for e e ntr y b y me a ns of a pprov e d visu a l se nsor y or instrume nt m onit oring