NANO

GENERAL 3  Empty CNG fuel lines from the tank to the engine by shutting OFF mechanical valves on CNG tanks and using diagnostic tester to empty the CNG lines for repair work.  only carry out work which involves or removing components from the CNG system in a safe place and in the open air; before doing so, disconnect the vehicle battery, and display warning signs, e.g. ‘No smoking’ around the area;  Do not carry out any work which could affect the CNG system over or close to a vehicle inspection pit or drain where dangerous concentrations of vapour could accumulate.  Existing fixed lighting of the type which is recessed into the pit wall, usually fitted at least 1 m from the pit floor, can continue to be used provided it is sealed behind toughened plastic or glass and protected against physical damage and if the risk assessment shows it is safe to do so. Portable tools, including hand lamps, used in pits should be either air-powered or explosion protected and can continue to be used provided the risk assessment shows it is safe to do so.  Maintain a minimum clearance of 1 m between the area to be heated and the CNG fuel tank or fuel lines; provide a heat resistant shield or empty or gas-free the affected parts of the CNG system where this clearance cannot be achieved. Hazard Identification  Human health hazards: Exposure to high CNG vapour concentrations can lead to nausea, headache, dizziness, and in extreme cases, loss of consciousness and death in oxygen deficient environments. Prolonged exposure to vapour may affect the central nervous system. Contact with liquid CNG can cause cold burns. First Aid Measures  Symptoms and effects: Liquid may cause skin and eye burns. Prolonged exposure to vapour concentrations above the recommended occupational exposure standard may cause headache, dizziness, weakness, nausea, confusion, blurred vision, asphyxiation, cardiac irregularities, unconsciousness and even death.  Protection of first aiders: Take appropriate steps to avoid fire, explosion and inhalation hazards.  First Aid - Inhalation: Remove the affected person to fresh air. Keep warm and at rest. If the casualty is stupor, some physical restraint may be necessary to prevent injury. If breathing but unconscious, place in the recovery position. If breathing has stopped, apply artificial respiration. If heartbeats absent, give external cardiac compression. Monitor breathing and pulse. OBTAIN MEDICAL ATTENTION IMMEDIATELY.  First Aid - Skin: Drench affected parts with water to normalize temperature Remove contaminated clothing, rings, watches, etc., if possible, but do not attempt to do so if they are adhering to the skin. Do not attempt to reheat the affected parts rapidly – reheat slowly. Cover with a sterile dressing. Do not apply ointments or powders. Note that contaminated clothing may be a fire hazard. Contaminated clothing should be soaked with water before being removed. It must be laundered before reuse.  First Aid - Eye: DO NOT DELAY. Flush eye with copious quantities of water to normalize temperature. Cover eye with a sterile dressing. OBTAIN MEDICAL ATTENTION IMMEDIATELY.  First Aid - Ingestion: In the unlikely event of ingestion, obtain medical attention immediately