Explain About Type Of Hazard (groups)?

1.	Explain About Type Of Hazard (groups)?
Answer» The type of hazard will be in the form of EITHER a gas or vapour or a dust or fibre. The classification of these hazardous is primarily divided into two groups depending on whether it is in a mining or above surface industry. These are DEFINED below: Group I – electrical equipment for use in mines and underground INSTALLATIONS susceptible to firedamp Group II and Group III -electrical equipment for use in surface installations Groups II & III are further sub-divided depending upon the hazard. Group II gases are grouped together based upon the AMOUNT of energy required to ignite the most explosive mixture of the gas with air. Group III dusts are subdivided according to the nature of the explosive atmosphere for which it is intended. The type of hazard will be in the form of either a gas or vapour or a dust or fibre. The classification of these hazardous is primarily divided into two groups depending on whether it is in a mining or above surface industry. These are defined below:

Answer»

The type of hazard will be in the form of EITHER a gas or vapour or a dust or fibre.

The classification of these hazardous is primarily divided into two groups depending on whether it is in a mining or above surface industry.

These are DEFINED below:

Group I – electrical equipment for use in mines and underground INSTALLATIONS susceptible to firedamp Group II and Group III -electrical equipment for use in surface installations
Groups II & III are further sub-divided depending upon the hazard. Group II gases are grouped together based upon the AMOUNT of energy required to ignite the most explosive mixture of the gas with air. Group III dusts are subdivided according to the nature of the explosive atmosphere for which it is intended.

The type of hazard will be in the form of either a gas or vapour or a dust or fibre.

The classification of these hazardous is primarily divided into two groups depending on whether it is in a mining or above surface industry.

These are defined below:

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