§ 13.148. Carbonate of lead or white lead; Old Dutch Process.
(a) Melting pot. The melting pot of the buckle casting machine shall be provided with a hood connected with an efficient air exhaust.
(b) Lead dust. The work of stripping the stacks shall be so conducted, and such adequate devices provided and maintained by the employer as to protect the employe as much as possible from lead dust.
(c) Other equipment. The employer shall equip the crane bucket, box, barrel, car or other receptacle into which the corroded buckles are dumped, with a hood or other tight-fitting cover connected with an efficient air exhaust, which shall be connected with an efficient dust collecting system. Such system shall be regulated by the discharge of air from a fan, pump or other apparatus through an enclosed cloth dust collector, having an area of not less than one square foot of cloth to every cubic foot of air passing through it per minute. If this cloth dust collector is not of the portable type, it shall be placed in a separate room or in a permanent dust house equipped with baffles or such other appartus to adequately take care of all dust which it may receive. The dust collector shall be provided with adequate means, so that the dust can be removed by an employe or employes who are outside the room or dust house, and no employe shall be required or allowed to enter such room or dust house except for the making of essential repairs, and then only when the dust-collecting machinery is not in operation.
(d) Gas escape. The employer shall equip the crane bucket, barrel, box, car or other container in which the corroded buckles are transported from the stack to the place where they are dumped with a cover to prevent the escape of dust.
(e) Discharge point. The dump, hopper, chute or other point at which the corroded buckles are discharged from the crane bucket, barrel, box or other receptacle which contains them, shall be equipped with a hood having connection with an efficient air exhaust and dust-collecting system, as provided for in subsection (c).
(f) Separator screens. Separator screens and their vents shall be dust tight and shall be connected with an efficient air exhaust and dust-collecting system, as provided for in subsection (c).
(g) Drag boxes. All drag boxes shall be so constructed that the dry lead shall enter under the water and not on top of the water.
(h) Dry pans. All dry pans shall be enclosed and so equipped with mechanical exhaust ventilation that dust cannot enter the workroom. The efficacy of such mechanical exhaust ventilation shall be approved, in writing, by the Department or its authorized representative. It is recommended that all employes engaged in the work of emptying a dry pan should wear respirators.
(i) Chasers, pulverizers and mills. All chasers, pulverizers and mills shall be properly encased with covers, and connected with an efficient air exhaust and dust-collecting system, as provided for in subsection (c).
(j) Hoppers, chutes and dumps. All hoppers, chutes and dumps, not otherwise mentioned, shall be connected with an efficient air exhaust and dust-collecting system, as provided for in subsection (c).
(k) Conveyors, elevators and mills. All conveyors, elevators, and mills, where lead is handled dry, shall be connected with an efficient air exhaust and dust-collecting system as provided for in subsection (c).
(l) Packing by machine. All packing of dry white lead, red lead, litharge, or any other dry substance containing lead in packages over 100 pounds in weight shall be carried on by means of an approved type of enclosed packing machine.
(m) Packing by hand. All packages 100 pounds or less in weight may be packed by hand under a hood equipped with an efficient air exhaust and dust-collecting system as provided for in subsection (c).
Cross References This section cited in 34 Pa. Code § 13.149 (relating to Carter process); 34 Pa. Code § 13.151 (relating to manufacturing); and 34 Pa. Code § 13.153 (relating to dry grinding, sieving and packing).
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