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 59 of 53 8 Doc u m e n t Identif icat ion S E L 018 P age Nu m b e r 9 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 I f the monit or r e sponds a pprop ria tel y the bump te st i s c ompl e te Th e bump t e st t e ll s the use r onl y th a t the monit or is r e spondi ng a s it shoul d 82 C a li bra ti on C a li bra ti on invol ve s a pply i n g spe c i fic a mount s of c a li bra ti o n g a s to t he mo nit or to a djust the se nsors so the y r e a d p rope rl y a c c o r ding to t he se t point s C a li bra ti on shoul d a lso be done whe n e ve r a bump test fa il s The se t point s a re p re vio usl y c onfi g u re d b y the f a c tor y All of the se t point s matc h pro vincia l OH S a s ther e is no c e il in g e x posure li mi t for C O the hig h a lar m set point shoul d re main a t 200 ppm Note L E L is r e a d in LE L mode ra the r tha n a s p e rc e nt a g e of total a i r volume L E L is s a fe r a nd pre fe rr e d 90 A T M OS PH E R IC H A Z A R DS I N C ON F I N E D SP A CE Atmos phe ric ha z a rds in a c onfine d spa c e a re those that e x pose e ntra nts t o a risk suc h a s de a th e ntra pment inj ur y or a c ute ill ne ss fr om one or m ore of the followin g c a us e s 91 Ox y ge n An a tm osphe ric ox y ge n c onc e ntr a ti on be low 195 ox y ge n de fi c ienc y o r a bove 235 ox y ge n e nric hment