Document vBd6vbKZz86DEzj4qkm8rgKV9

Normally, vnrtilatitai within the ta> t* provided hi la improve witiili>y and to help prevent the m rape of dust to the wnvimdiog areas, oat to reduce the concentration of flics dial to i tafe ImL Turablut or rotating table type of sand Utft traits should t provided with sufficient ventilation to prevent the cape of silica dust. Leakage doe to cxcerive wear should l< remedied. Small sandblast cabinets, sine the operator controls the Mast nozzles from outside the cabinet, frequently have faulty seals around the doors or the robber gauntlet* ate loose or tom. The dost trlwk escapes from the cabinet through these openings b a dose proximity to the breathing zone of the employee and In many 8rutteres exceeds the permissible lim it for silica. This leakage sbuald be rwriTcfcd and the men ibuld not lc required to use respirator*. if the articW being blamed ate free of silica or other toxic material the dust resulting from grit or shot blast ing ts classified In the nuisance cate gory. It follow* that the maintenance of ventilating systems for grit blast ing. although desirable, b not always so necessary as for sand blasting. The use of steel grit or shot in blasting rooms produces excessively high concentrations of dost within the erjciawre. It a therefore, necessary to protect the worker within the room. The remarks contenting sandhlafling rooms are therefore, perti nent when considering rooms in which tied grit or shot are used as the abrasive. Vapur IJailing. * a variation vl tend blasting, b a romperstrrdy re-' rent devdopaeot. Thb procedure in volves the tae of fine silica and water under pressure. The allies used fa vapor blast units vans in sue and* may even be as small as 1250 mesh (approximately 10 microns). It b. generally believed that airborne particles below .5 microns are most significant in causing silicosis. It then follows that operations involving the ae of silks abrasive whose ini tial particle rite approaches that', order of magnitude are more hazard ous, and, require continual vigilance in maintaining good control. It b,. therefore, essential that the vapor blast cabinets be maintained so that leakage of mist does not occur. Good housekeeping h also essen tial as spillage of the sand and wate sludge upon the floor will create a toeroe for dust dtmcsri&ation when the water evaporates. Likewise, ooa-' tamers of the dried sludge should not' be allowed to stand in the factory where they can be influenced by air' currents of high velocity. Practically all industrial plants have operations which involve the uw of lad bam bearing metal or DUSTumcj Abrasive dusts irritate workmen and slowproduction. Eliminate them with TORIT DUST COLLECTORS TOer Dal Cnftdon <u cmpl.nl/ at dm t Abcorfie duds pass tawk fMuuf fibers and fts deansd ok & TOOTDetf GdUdm to cyaula, end Sous rungmg from M HF to 3 HP.ond fiNkg rfluowdoid grindin^ cut-off and poGAhg wharfs livery. For details end latest -TOOT catalogwriter T OR IT MIIFACTIIII8 CO. M V- !<lrr. Babbitt bearing metal cetrfam- ir.c approximately 75 per -cat lead bate been encountered. Hie compost- ti>-n of solder metal b variable and dr{>eodent upon the purpose for hicb it is toed, with ordinary soft Wilder containing- a comparatively hiph percentage of lead. Assuming that the babbitt or solder ctmlxfas a ty**""* amount of lead, the question then ansa as to whether or not onptoyea working with thb material will become flL The answer rtiuid be given by a qualified indus trial byghabt after he bad aeen the higher temperature the metal b more readily oxidized to produce a dross consbting of a high percentage of lead oxide. Tlx draw may provide a protective coating to reduce the vola tilization of thg lead; however, dis turbance of thb' costing wiO `create As a safeguard against excessive or habbitx ere usaally votilated. Wherever possible, it b advisable to ariose the pot as completely as pos sible end provide official air vob ume lo overcome the thermal efleete of the molten metaL Attempts have been made to toe natural draft ven tilation systems to control theM foma and In those instances where the duct*' were not of snScfart diameter the system was inadequate. A preferable method b the use of mechanical syv- terns. The removal of excess folder whh power-driven toots, each a grinding wheels, discs, or wire wheels, creates airborne dust which may tootemiaate large areas if (hr operation b ex tensive. Diligent use of abrasive doth will also result in excessive coocen- operation and considered such factors a* the temperature to which the metal b heated, the method of removing ex cess soldier, the length of qpuwiie, WHEN DANGER TIPS WE SCALE- and the effectrvcnesi of the control measure* provided. It is a weO known fact that lad ausa flbem if absorbed fa excessive WORKERS ARE SAFER in sta^afe amounts, sod therefore operations where lead b tard have recoved con siderable stady. Out of thb expert- (^PROTECTIVE GARMENTS erne certain praetka are known to produce other praetka have bee lo be harmful It b generally, cooceded that excess!>e concentrations do not result from operations when elder b applied by means of an deo DnUBK tan, uS tajnto tkn.Ua .aim iat pruatj pntatad fnai tk. ubfkk tkey an. Staaaf. It. attha Guana ui toitgwC to tU. trie soldering Iron. Thb b probably due to the kbsU amounts of older used and the comparatively low beat of the metsL When the {too b heated fa o small Oils and Grease Adds and Caustics gas-fired furnace, the exposure may be of grata consequracs. Solder which remains on the iron coming into contact with the flame or heat b Tan and Creosote Paints and Laeqaen Naphtha and Solvents vulnerable for volatilisation. Small amounts of solder drop from the iron onto the bot floor of the furnace Flame. Each of these represents a potential where K b readily volatilized or oxi- lost time accident. Protect your dbed. The oxidised material may ^ tome airborne due to disturbances crated by the flame or by removing or placing the soldering ires bithe workers against these hazards by standardizing on StaSafe Protective Garments. farance. Frequently industrial hygfenba* we*"."*--*! that ventilation he pro vided for beating unite of. thb type, Stock nerfeft who men) problems; Stendorft free donga wetrkn w3t deretop o new modet or modify on etutmg one to roht poor tpedd thereby nanoring lead *fuma end tofety problem. dot from the amroamaL Thb b particularly true fa nail rooms or where many --fr* are fa use. - Vrht for BJUdm Nn. 104 . StaSafe Products Atmospheric cootemfastioh odea, looed by the use of cither gas. or. are manufactured by electrically bested pots containing solder b dependent oo a number of factors. With higher ;tanpcrattans STANDARD SAFETT EQUIPMENT COMPANY 222 West Ontario Stmt. Chlcnf 10, IBfanb more iH occur end the HIVttK CltVtLAMn tOtAMMUl greeter wiB be the expoksra. With the 77