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 26 of 538 Doc u m e n t Identif icat ion S E L 005 P age Nu m b e r 4 of 1 4 42 Assig nin g A Ri sk De si g n a ti on R a te the ha z a rd to he lp d e ter mi ne whic h h a z a rd is the most se rious a nd thus whic h ha z a rd to c ontrol fir st P rior it y sha l l be e stablis he d b y takin g int o a c c ount t he se ve rit y prob a bil it y a nd fr e que n c y of the e x posure B y a ssi g nin g a prior it y to the ha z a rd y ou a r e c r e a t ing a r a ti ng o r a n a c ti on it e m The following fa c tors pla y a n im porta nt role F re qu e nc y of e x posure S e ve rit y o f e x posure P roba bil it y o f oc c urr e nc e W he n the ha z a rd is identified de ter mi ne th e c ontr ols whi c h a re a lre a d y in plac e to ensur e thi s infor mation i s take n int o a c c ount wh e n a ssi g ning a risk de si g na ti on Onc e e a c h h a z a rd ha s be e n a ssi g n e d a s c ore for se ve rit y fr e qu e nc y a nd p ro ba bil it y ba se d on the c ha rt a bov e mul ti pl y x the 3 it e ms S x F x P Tota l F requenc y P ro ba b i l i t y Sev er i t y 4 One or mor e ti mes pe r h our 4 P roba ble li ke l y to occ ur im media tel y 4 C a tastrophic de a th ser i ous inj ur y 3 Onc e or mor e ti mes pe r d a y 3 Oc c a sional li ke l y to o c c ur 3 C ritica l lost ti me inc ident c onsi de ra ble p rope rt y d a mage 2 Onc e a d a y 2 R e mot e c ould occ ur 2 Mino r ill ne ss etc 1 R a re l y 1 Not li ke l y to occ u r 1 Ne a r Miss RISK RA T IN G M A T RIX 45 64 Hi g h R isk I m pleme nt cor r e c ti ve a c ti ons im media tel y The se r isks a re una c c e ptabl e S ubst a nti a l i mprove ments i n risk c ontrol m e a sure s a re ne c e ssa r y so t ha t t he risk is re duc e d to an a c c e ptable leve l R isk re duc ti on mea sure s shoul d be im pleme nted ur ge ntl y a nd it ma y b e ne c e ssar y to conside r suspending or re strictin g the a c ti vit y unti l short t e r m and long ter m c ontrols ar e im pleme nted tha t re duc e s th e risk so t ha t i t i s no l ong e r hi g h 31 44 Me dium R isk I mpl e ment c orr e c ti ve a c ti ons wit hin 24 hours C onsi de ra ti on shoul d be a s to whe ther the r isks c a n be lowe re d whe r e a ppli c a ble to a tol e ra bl e leve l a nd pr e f e ra bl y to an a c c e ptable leve l Th e risk mea sure s shoul d be im pl e mente d withi n a de fin e d ti me pe riod Ar ra n ge ments shoul d be made to ensur e th a t contr ols ar e maintaine d p a rtic ular l y if th e risk leve ls a re a sso c iate d with ha rmf ul conse que n c e s 16 30 L ow Ri sk Aw a re n e ss I mpl e ment c or re c ti ve a c ti ons wit hin 2 we e ks R e g ula r moni toring shoul d be pe r for med to e nsur e that the c ontrols ar e maintain e d a nd c onti nue d to be e ff e c ti ve 1 15 Mini mum or N o R isk I ndica tes th a t risks a re c onsi de re d a c c e ptab le No f urthe r a c ti on or a ddit ional c ontrols ar e n e c e ssar y