Document MGYxBOJpxgKLKbxR4Ga8Rnxp9

HAND AND PORTABLE POWER TOOLS Fig 30-22. An excellent holder for a soldering Iron. Note the Iron's pistol grip thot makes for eose of handling. Courtesy Western Electric Company be dismantled periodically, as well as thor oughly cleaned every day by being blown out with low-pressure air If compressed air is used, the operator should wear gog gles or work with a transparent shield be tween his body and the air blast The fire and explosion hazard of wood sanding is considerable, and precautions should be taken to keep the dust to a mini mum through adequate ventilation or, if the machine is so designed, with a dust col lector or vacuum bag If much wood sanding must be done, electrical equipment designed for this ex posure should be used to minimize the ex plosion hazard Fire extinguishers approved for electrical or Class C fires should be available, and employees should be told what to do m case of fire Soldering irons are the source of bums and of illness from inhalation of fumes Insulated, noncombustible holders will prac tically eliminate the fire hazard and the danger of bums from accidental contact. Ordinary metal covering on wood tables is not sufficient because the metal conducts heat and may ignite the wood below. Holders should be designed so that em ployees cannot accidentally touch the hot irons if they reach for them without look ing The best holder completely encloses the heated surface and is inclined so that the weight of the iron prevents it from fall ing out (Fig 30-22). Harmful quantities of fumes from lead soldering should not be allowed to accumu late Local regulations may require exhaust facilities if much lead soldering is done Even if lead fumes are not present in harm ful quantities, it may be desirable to ex haust the nuisance fumes and smoke Air samples should be taken to verify that the amount of lead in the air is not harmful Lead solder particles should not be al lowed to accumulate on the floor and on work tables If the operation is such that the solder or flux may spatter, employees should wear face shields or do the work under a transparent shield Air power tools Air hose An air hose presents the same tripping or stumbling hazard as do cords on electric tools. Persons or material acci- 30-20