(EHS) Environment Health Safety

Type of Hazard Occupational Health Hazards can be classified into five catagories.  1. Chemical Hazard:- Dusts, fibres, gases, vapours, etc. and the associated hazards. 2. Physical Hazard:- Noise, vibration, radiation, heat, etc 3. Biological Hazard:- Bacteria, fungus, virus, human endoparasites, etc. 4. Psycho-social Hazard:- Stress, substance misuse, violence at work, etc. 5. Ergonomic Hazard:- Posture, workplace layout, etc.  

 Flash Back Arrester IS code- 11006 TERMINOLOGY 1. Flash Back arrestor:-  It is a device to stop or arrest or prevent the return of the flame which can result in an explosion or of the blow back of the oxygenated gas from damaging whatever it is intended to protect. These devices may incorporate two or more safety functions. 2. Safety Relief Device — It is a device intended to prevent rupture of the flame arrestor due to sudden built in pressure which can be in a form of safety valve, bursting disc or liquid seals connected to atmosphere. 3. Safety Seals — The flame arrestors or flash back arrestors are at times also referred as safety seals. 4. Flash Back — It is the return of the flame into an apparatus or line and its propagation against the flow of the gas. 5. Non-return Valve — It prevents the flow to return from the down stream side. 6. Flame Arrestors — Device which quenches a flame. MANUFACTURER’S TEST The following test should be carried o...