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 64 of 53 8 Doc u m e n t Identif icat ion S E L 018 P age Nu m b e r 14 of 19 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 130 A P PENDIX B CO N F INE D SP A C E HA ZA R D AS S E S S M E N T W O R K S HE E T C O N F I N ED SP A C E H A ZA R D A SS ES SMEN T WO R K SH EE T Locat i on O f Wo r k D es cr i pt i on of T a sk s T o B e C ar r i ed Ou t Entr y D at e A t m osph er i c H az ards Y es No Explos i v e at m osphe r e g as es v apor s f i ne du st s O xyg en de f i ci e ncy O xyg en e nr i chm ent T ox i c g as e s or v apo r s D ust s m i st s f um es Sm o k e B i ol og i c al ag en t s O t her I f y e s to 1 or mor e of the a bove spe c i f y a tm osphe r ic ha z a rds