DYEING AND FINISHING
§ 47.351. Heating and ventilating.
(a) The requirements of this section in addition to the requirements of § § 47.342—47.343 (relating to apparatus; machines) shall be complied with in dyeing and finishing establishments.
(b) Dye houses shall be equipped with ventilating systems which will produce the following conditions:
(1) During the months of November, December, January, February, March, April and May, the temperature of the dye house shall be maintained between 40°F and 95°F. During this period when the weather is clear and the outside temperature is 40°F or more, the dye house shall be kept free from steam to a height of 6 feet from the floor. The ventilating system employed to produce this freedom from steam shall be maintained in operation during less favorable weather conditions.
(2) During the months of June, July, August, September and October, the dye house shall be kept free from steam at all times to a height of 6 feet from floor.
(c) The systems which are used to produce the conditions set forth in subsection (b) may consist of ventilating fans, heating coils, hoods with flues attached over kettles or introduction of hot air on other natural ventilating devices.
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