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Product: Carbon Dioxide, Refrigerated Liquid P-4573-D Date: December 2009 <br /> floor. Ventilate space before entry. Verify sufficient oxygen concentration. Close container <br /> valve after each use; keep closed even when empty. Storage areas should be clean and dry, <br /> free of oils and dust. These collect on condensing coils and impair their efficiency. <br /> Temperatures should not exceed 1250F (51.1°C). Cryogenic containers are equipped with a <br /> pressure relief device and a pressure-controlling valve. Under normal conditions, these <br /> containers periodically vent product to control internal pressure. Use adequate pressure relief <br /> devices in systems and piping to prevent pressure buildup; entrapped liquid can generate <br /> extremely high pressures. <br /> RECOMMENDED PUBLICATIONS: For further information on storage, handling, and use, see <br /> Praxair publications P-14-153, Guidelines for Handling Gas Cylinders and Containers; P-15- <br /> 073, Safety Precautions for Carbon Dioxide; and P-3499, Safety Precautions and Emergency <br /> Response Planning. Obtain from your local supplier. <br /> 8. Exposure Controls/Personal Protection <br /> See section 16 for important information on by-products generated during use <br /> in welding and cutting. <br /> COMPONENT OSHA PEL ACGIH TLV-TWA 2009 <br /> Carbon dioxide 5,000 ppm 15,000 ppm; 30,000 ppm, 15 min STEL <br /> TLV-TWAs should be used as a guide in the control of health hazards and not as fine lines <br /> between safe and dangerous concentrations. <br /> IDLH = 40,000 ppm <br /> ENGINEERING CONTROLS: <br /> Local Exhaust. Use a local exhaust system, if necessary, to keep the concentration of carbon <br /> dioxide below all applicable exposure limits in the worker's breathing zone. <br /> Mechanical (General). Under certain conditions, general exhaust ventilation may be <br /> acceptable to keep carbon dioxide below the exposure limit. <br /> Special. None <br /> Other. None <br /> PERSONAL PROTECTIVE EQUIPMENT: <br /> Skin Protection. Wear insulated neoprene gloves and metatarsal shoes for cylinder handling. <br /> Protective clothing where needed. Cuffless trousers should be worn outside shoes. Select in <br /> accordance with OSHA 29 CFR 1910.132 and 1910.133. When using carbon dioxide or carbon <br /> dioxide mixtures in welding and cutting, see Praxair MSDS P-4574, gaseous carbon dioxide, for <br /> requirements. Regardless of protective equipment, never touch live electrical parts. <br /> Eye/Face Protection. Select in accordance with OSHA 29 CFR 1910.133. <br /> Respiratory Protection. A respiratory protection program that meet OSHA 29 CFR 1910.134, <br /> ANSI Z88.2, or MSHA 30 CFR 72.710 (where applicable) requirements must be followed <br /> whenever workplace conditions warrant respirator use. Use an air-supplied or air-purifying <br /> cartridge if the action level is exceeded. Ensure the respirator has the appropriate protection <br /> factor for the exposure level. If cartridge type respirators are used, the cartridge must be <br /> appropriate for the chemical exposure (e.g., an organic vapor cartridge). For emergencies or <br /> instances with unknown exposure levels, use a self-contained breathing apparatus. <br /> Page 4 of 10 <br />