§ 13.149. Carter process.
(a) Melting pot. The melting pot shall be provided with a hood connected with the chimney stack or with other efficient air exhaust.
(b) Blow chamber. The blow chamber shall be so enclosed as to be dustproof and means shall be provided to empty it mechanically. The blow chamber shall not be entered when blowing is in progress. It may be entered when blowing is not in progress only for the making of repairs or to clean the chamber. The employes so engaged shall wear respirators.
(c) Conveying equipment. The employer shall convey the blown lead to the cylinders or reels either by a screw conveyor with dustproof cover, or the crane bucket, barrel, box, car or other conveyor equipped with a dustproof cover.
(d) Reels. Care shall be taken in conveying the blue lead into the reels to create as little dust as possible. Employes engaged in this work shall wear respirators.
(e) Pipes to reels. The pipes conveying the carbon dioxide to the reels shall be tight and inspected daily for leaks. A record of such inspection shall be kept in a book.
(f) Emptying reels. Care shall be taken in emptying the reels to create as little dust as possible. Employes engaged in this work shall wear respirators.
(g) Dry thrasher. The dry thrasher shall be enclosed and connected with an efficient air exhaust and dust collector, as provided for in § 13.148(c) (relating to carbonate of lead or white lead; Old Dutch Process).
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