Document nNk4aeBLMwjn91zg1V2373baz

in Eelco-tfemy Storage Battery Factory lomiKvmTio'. iO The complete separation of various departments of fcho operation is advantageous, because there Is consider* ablo variation in the mgnltude of exposure occasioned by various types of work and it is desirable to isolate the types of exposure 30 far as possible in order to appreciate their magnitude, and In order that no un necessary exposure bo brought about. In this way the doctor can localize the hazards of a particular occu pation by the condition of fcho men so engaged* It is also desirable to have certain occupational fields which have no intrinsic hazard, into which to transfer workmen who have been suffering significant exposure* The hazards of any particular occupation should bo studied and combatted by all possible means, so as to corns within the limits of known satisfactory conditions* The best manner of defcoiraining the latter In this case is to measure the dust concentration in fcho air breathed, and to be satisfied with fcho results only when the uir breathed by workmen contains loss than 5 mg* of lead per 10 cubic meters of air* Methods of combatting fcho dust hazards are boat summar ized as follows: (a) Flier there is dust on the floor from any cause the floor should be kept continually wet* (b) V.'hore there is dust thrown into the air In any operation, a suitable forced ventila tion should so dilute fcho air breathed as to reduce the lead dust to the above con centration* Hoods and fans can accomplish this* They work best if the air current Is pulled laterally or downward, rather than upward * The above applies with equal force to volatile lead from melting pots, lead burning, etc* Insistent Instructions and supervision as to cleanliness of workmen, with especial care as to nails, hands and tooth, is absolutely necessary to prevent careless General Veconmendafcions (cont.) 6, Thorough inspection of respirators and other protective equipment, as well as of the cui'efullnogs of the men thornselvos should be inaugurated unlose already in ex istence# 7# The use of respirators 3a necessary as long as there are duet concentrations in excess of the figures given above# (I an sending herewith a booklet describing various types of such masks * Please return It when you have finished v*ith it. I an also obtaining a sample mask which I will show you v/hon I obtain it from a man 1 know in England#) CklTICIbTSv a; > : V.. f' TT' Tf' ,j+ . - i 1* V eclomation Department# (a) Thoro is too much dust at the opening at which materials are put into the melting pot# This could be hooded, or materials might bo put in mechanically. b) There is oxide dust in dressing the melting pot. This should bo hooded. It would probably be well to use a metal track in which to put the dross, and to 'nave a hood over this at the time dross is being oliovaled or dipped into it (c) There is considerable dust at the grinding apparatus. The Tutorials give off dust as introduced (shoveled) and tho grinding apparatus leaks. (d) There is a considerable amount of dust on tho floor# This should be prevented, as water is dangerous In the area of the melting pot# (c) 'Tho load pig moulds should bo hooded to remove the load vapor. f# Kixing Department# Tho emptying of barrels of oxide and other materials gives rise to dust. Tho barrels might best bo empfclod by moans of a mechanical device that upends them into an orifice exactly fitted to tho barrel top, so no leakage* :1s possible# If some amount of oxide gets on tho floor, tho floor should bo kept wot, otherwise currents of air will carry it into respired air of workmen# o# Tasting Department. H 0012284 The mechanical pasting machines allow paste to got on tho floor where it nay dry* also on various parts of the machinery It nay dry* It should be neon that the floor and apparatus are sufficiently moist to prevent dust being thrown into the air* 4* Porting and Plato Assembling* Tho grating with down draft on which these are handled Is very good* However some dust rises from those gratings* They should he hooded so as to havo some side draft in order to hoop the dust out of the air breathed by workmen* This Is shown In part by tho dust on the floor In this area* The same Is true of the rotary brushes which clean those plates* They are not properly hooded* Dust passes out of tho hood In front and at the sides* 5 ..asonr.'linr; "enartment * (a) There is more dust on the floor and on the moving assembly platform than is - necessary* This would be prevented in part by a partition separating this department from tho pasting and sorting space*' It should bo possible to lesson the dust on the moving platform by cleaning the platen more adequately* (b) There I3 no precaution against lend vapor in tho case of tho lead burners in the assembling work* This operation should bo hooded so as to reduce tho crubrtity of vapor breathed* KE 0012285