工业通风美国标准.doc

? Part Number: 1910 ? Part Title: Occupational Safety and Health Standards ? Subpart: G ? Subpart Title: Occupational Health and Environment Control ? Standard Number: 1910.94 ? Title: Ventilation. 1910.94(a) Abrasive blasting. 1910.94(a)(1) Definitions applicable to this paragraph 1910.94(a)(1)(i) Abrasive. A solid substance used in an abrasive blasting operation. 1910.94(a)(1)(ii) Abrasive-blasting respirator. A respirator contstructed so that it covers the wearers head, neck, and shoulders to protect him from rebounding abrasive. 1910.94(a)(1)(iii) Blast cleaning barrel. A complete enclosure which rotates on an axis, or which has an internal moving tread to tumble the parts, in order to expose various surfaces of the parts to the action of an automatic blast spray. 1910.94(a)(1)(iv) Blast cleaning room. A complete enclosure in which blasting operations are performed and where the operator works inside of the room to operate the blasting nozzle and direct the flow of the abrasive material. 1910.94(a)(1)(v) Blasting cabinet. An enclosure where the operator stands outside and operates the blasting nozzle through an opening or openings in the enclosure. 1910.94(a)(1)(vi) Clean air. Air of such purity that it will not cause harm or discomfort to an individual if it is inhaled for extended periods of time. 1910.94(a)(1)(vii) Dust collector. A device or combination of devices for separating dust from the air handled by an exhaust ventilation system. 1910.94(a)(1)(viii) Exhaust ventilation system. A system for removing contaminated air from a space, comprising two or more of the following elements (a) enclosure or hood, (b) duct work, (c) dust collecting equipment, (d) exhauster, and (e) discharge stack. 1910.94(a)(1)(ix) Particulate-filter respirator. An air purifying respirator, commonly referred to as a dust or a fume respirator, which removes most of the dust or fume from the air passing through the device. 1910.94(a)(1)(x) Respirable dust.