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h�lp://,ww.osha-sic.gov/dta/hib/hib_data/ 19960605 Potential Carbon Dioxide (CO(2)) Asphyxiation Hand When Filling Stationary Low Pressure CO(2) Supply Systema. Tuesday, February 13, 2001 In bl 9960605.html concentrations at low levels. Therefore, ventilation systems should be designed to exhaust from the lowest level and allow make-up air to enter at a higher point. 4. Develop and implement a procedure to monitor the atmosphere for CO(2) and provide local ventilation where levels may exceed the PEL. Do not depend on measuring the oxygen content of the air because elevated levels of carbon dioxide can be toxic, even with adequate oxygen for life support. 5. We recommend that appropriate warning signs be affixed outside of those areas where high concentrations of carbon dioxide gas can accumulate. Recommended language is shown below: CAUTION - CARBON DIOXIDE GAS Ventilate the Area. A High CO(2) Gas Concentration May Occur in this Area And May Cause Suffocation. 6. Establish a procedure for inspection and maintenance, at regular Intervals, of all piping tubing, hoses, and fittings. The entire system should be maintained by qualified personnel in accordance with the manufacturer's instructions. 7. Proper lighting may be Important to enable workers to use these systems safely. 8. For further Information on stationary low pressure, carbon dioxide supply systems and related topics, the following Compressed Gas Association, Inc. (CGA) pamphlets should be consulted. These pamphlets are designed to assist personnel involved In transferring liquid carbon dioxide, designers, engineers, safety and training personnel, distributors, restaurant personnel, other users, inspectors and all Interested parties. CGA G-6.5-1992, Standard for Small Stationary Low Pressure, Carbon Dioxide Supply Systems CGA G-6.4-1992, Safe Transfer of Low Pressure Liquefied Carbon Dioxide in Cargo Tanks, Tank Cars, and Portable Containers CGA G-6.3-1995, Carbon Dioxide Cylinder Filling and Handling Procedures CGA G-6-1984, Carbon Dioxide CGA G-6.2-1994, Commodity Specification for Carbon Dioxide CGA G-6.6-1993, Standard for Elastomer -Type Carbon Dioxide Bulk Transfer Hose Please distribute this bulletin to all Area Offices, State Plan States, Consultation Project Officers, and appropriate local labor and industrial associations. 4 OSHA Hazard Information Bulletins - Table of Contents by Year Page:2