Explosion Proof Overhead Crane

Overview:

Explosion-proof Overhead Crane is a type of bridge crane, supporting the use of explosion proof electric hoist,

Most of them are used in flammable, explosive, and corrosive environments. They are in line with JB/T10219-2001 “Explosion-proof beam cranes”

The crane is qualified inspected by inspection unit of blast-proof product which is appointed by the state. The crane has got Certification of conformity of An Instrument for Explosive Atmosphere. where has mixture of detonating gas which is composed of flammable gas or steam, whose ignition temperature team belongs to T1 ~ T4 team , and air. The applicable danger area is Area 1 or Area 2.

Gas Environment

Zone 1

A place in which an explosive atmosphere consisting of a mixture with air or flammable substances in the form of gas, vapour or mist is likely to occur in normal operation occasionally.

Zone 2

A place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation but, if it does occur, will persist for a short period only.

Dust Environment

Zone 21

A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is likely to occur in normal operation occasionally.

Zone 22

A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is not likely to occur in normal operation but, if it does occur, will persist for a short period only.