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...ding materials such as floor tiles, dry wall compounds, reinforced plaster. Du...

... stacks unless air is adequately conditioned. ASBESTOS AND RADON Although acute health effects are not associated with asbestos and radon, we mention them due to recent concerns about their health effects. Asbestos may be found in: insulation and other building materials such as floor tiles, dry wall compounds, reinforced plaster. During renovation or maintenance operations, asbestos may be dislodged and become airborne. Evaluation of employee exposure to asbestos will normally be covered under the OSHA Asbestos standard. Radon may occur in the ground beneath buildings, building materials, and ... irritation; odor annoyance. Man-made fibers Sources: fibrous glass and mineral wool. Acute health effects: irritation to the eyes, skin and lungs; dermatitis. Miscellaneous gases This includes ammonia, hydrogen sulfide, sulfur dioxide, etc. Sources: microfilm equipment, window cleaners, acid drain cleaners, combustion products, tobacco smoke, blue-print equipment. Acute health effects: eye, respiratory tract, mucous membrane irritation; aggravation of chronic respiratory diseases. Nitrogen oxides Sources: combustion products from gas furnaces and appliances; tobacco smoke, welding ... flow. c) rebalancing the system to prevent inflow or outflow of contaminated air due to pressure differentials between rooms. d) preventing poor distribution of make-up air by proper placement of air inlets and exhausts. e) using room fans to improve mixing and dilution of pollutants. PREVENTIVE MAINTENANCE (P.M.) PM plans for humidifiers, water spray and other HVAC system components should include: a) checking damper positions and functioning belts, baffles, ductwork, and system balance. b) measuring airflow and performing necessary adjustment if necessary ...