Document om3g6GjB05gQnq9db9BOaygZE

FILE NAME: Visible Dust (VDT) DATE: 1953 DOC#: VDT011 DOCUMENT DESCRIPTION: Industry Warning Information eh h tr> eS'L- SAFE PRA CT ICE DATA SHEET A - 20 s5a3t as ASBESTOS A s b e s to s i s use! i n siany v a r i e d fo r m auch ( board, c lo t h , fi b e r , fpe psckinjt, u l e e v i n g , tap*, twin, ya ra , s h e e t , and in s t k i r numerous ao sih ia atsfin s. The ssan er o f sto ra g e depends upon the form o f s i i h e s t o i. Where the a s h a o is s say jMusaibly he in a loose fa sp du ring s t o r ag e , a d u s t y c o n d i t i o n co u ld he produced and p r o p e r v e n t i l a t i o B s h o u l d he p r o vided. PROPERTIES yIS - Non-flammable. s l i g h t l y h i g h e r c o n c e n t r a t i o n may bo permitted but m s t not excead lO m illis n p a r t i c l e s per c-ubie f o o t . These M axi Allowable Concentrations apply to re peated or re cu rrin g d a ily expoaurei*. Where a s b e s t o s may be n i x e d w i t h o t h e r less harmful d u sts, the co n cen tratio n at ashestoo dust w i l l be the c o n t r o l l i n g fa c t o r . The asbeatoa dust co n c e n tra tio n c a n he d e t e r m i n e d by c o l l e c t i n g _ r,d analyzing air samples. SKI iSiSl TAT 19 - A s b e s to s i a u s u a l l y not 'shirt i r r i t a n t . EXPtaSIQX - Non-explosive. PERSONAL PROTECTIVE EQUIPMENT 8ft#ATHI8d D u s t f r o m a s b e s t o s m a te ria l say produce a chronic lung disease i f i t is breathed in s u ffic ie n t concen- t r a t i a o s over a p erio d o f y e a r s . In some p e r s o n s , t h e d i s e a s e may d e v e l o p much more r a p i d l y than i n o t h e r s . The c o n c e n t r a tio n and p a r t i c l e s i t e o f the d u s t w i l l a l s o i n f l u e n c e th e number o f year* of exposure required to produce the d is e a s e . In any c * a e , exposure eves to high conceotCfition of asbestos dust fo r a p e rio d o f a fa's days nr even c few months v i'ii not produce the d is e a s e . P a r t i c l e s l a r g e r than, about 10 m ic ro n {O.OO0C3S i n . ) can n o t g e t i n t o tha sms 11 lo n g a i r sac.* t o e a u s s dam age. .Sitp.K s m a l l p a r t i c l e ** f a r be lew t h e r i t e which i s v i s i b l e to the halted. *ys. Host d a n l s , however, hste p a r t i c l e o f s la r g e range o f asses which vary from v is ib le to i n v i s i b le . I t is only the fin inv ia ib le oust p a r t ic le s that, am e ffe c t * in prodnejag onbeatoai. WHEN ST I S NECESSARY TO WORK It- AN AREA CONTAININC HIGH DUST CONCENTRATIONS. AN A IR -L IN E RESPIRATOR OR HOSE MASK WITH OR WITHOUT A BLOWER MAY BE U S E D , l b a i r - l i n e r e s p i r a t o r s h o u ld have 6 i t 15 l h x / a q , i n . p r e s s u r e . C a re sh o u ld be t a 'en so t h a t c o n t a m i n a t e d a i r doer n e t e n te r the hose fo r the hose maah. For medium d u a l c o n c e n t r a t i o n s , the standard a ll dust re s p ira to r 8881-5, equipped with f i l t e r 8883-6, say be used. F i l t e r s sh o u ld be r e p la c e d a c c o r d in g to s predate trained ch e d u ls or at any time b res tin n g becomes d i f f i c u l t . A l l r e s p i r a t o r and rep lacem ent p o r ts sh o u ld h a r t th Bureau o f Mines a p p r o v a l which i s i n d i c a t e d by a l a b e l on l a r g e r nsrt o r PM#_________ { a p p r o v a l n n m h e r i on smsl|er part. PSfCAUTIOHS Whore p e o p l e y b r e a t h e t i e ' a t , A PF.8SOM SHOULD NOT ENTER AN AREA th e Maximum A l V o v i b l e Cone a n t r i i s CONTAINING AN EXTREMELY HIGH CONCENTRA- S i l l too p a r t i c l e * p e r e u h ic f i a t o f TIOfi GF ASBESTOS BUST FOR A PROLONGED , i r , u n i * * * h e pbedir T e ( r 1 PERIOD OF TIME WITHOUT ADEQUATE PftOTEC- that) on* h o d r p * s d * y , i " h i * t .is s ' - T I C K . Tl 14AXIMUM ALLOWABLE CONCENTRATION t>;m 1M DOUBT COHSOLT HSDICAl OB SAfSTY DEBAiTHBHT ft So$*U SAFE PRACTICE DATA SHEET A-20 1 .J ! #t t 3 I T C H O U S * * t * e r K J C CU S P . , t p O U S T IA t H Y G S K S LAB. , t.AST 03'111- 58 q P I T T S BU*CH._,r A- ewir