What is a Zone 2 hazardous area?

What is a Zone 2 hazardous area?

Zone 2: An area in which an explosive gas atmosphere is not likely to occur in normal operation and, if it occurs, will only exist for a short time.

What is a Class 1 Division 2 area?

Class I, Division 2 or Zone 2 classified locations. An area where ignitable concentrations of flammable gases, vapors or liquids are not likely to exist under normal operating conditions. In this area the gas, vapor or liquids would only be present under abnormal conditions (most often leaks under abnormal conditions).

What are the classifications of hazardous area?

Then, the level of risk of an explosion is based on the frequency and duration of the occurrence of an explosive atmosphere. This level of risk is represented by classifying the hazardous area as Zone 0, Zone 1 or Zone 2 (for gas, vapour and mist atmospheres) or Zone 21 or Zone 22 for dust atmospheres.

What is Zone 1 and Zone 2 in oil and gas?

Zone 1 is an area in which an explosive atmosphere is likely to occur occasionally in normal operation. Zone 2 is a place in which an explosive atmosphere is not likely to occur in normal operation but, if it does occur, will persist for a short period only.

Does IIC cover IIA?

Class IIC also covers classes IIB and IIA. * Normally refers to the maximum ambient temperature of the installation. The lower is the ignition temperature of the related explosive atmosphere, the higher should be the maximum allowed surface temperature of the housing.

What does Class 1 Group D mean?

Class I Group D locations are atmospheres containing elements such as Gasoline, Hexane, Naphtha, Benzine, Butane, Propane, Alcohol, Acetone, Benzol, Lacquer Solvent Vapors or Natural Gas.

What is a Class 2 location?

Class II Locations The second type of hazardous location is called a “Class II Location”. This classification is created by the presence of combustible dust in the air in sufficient quantities to be explosive or ignitable.

What is gas group IIA?

– Group IIA—Atmospheres containing propane, or gases and vapors of equivalent hazard. – Group IIB—Atmospheres containing ethylene, or gases and vapors of equivalent hazard. – Group IIC—Atmospheres containing acetylene or hydrogen, or gases and vapors of equivalent hazard.

What is the difference between group IIa and group IIB?

Group IIA—Atmospheres containingpropane, or gases and vapors of equivalenthazard. Group IIB—Atmospheres containingethylene, or gases and vapors of equivalenthazard. Group IIC—Atmospheres containingacetylene or hydrogen, or gases and vapors ofequivalent hazard.

What are hazardous area classifications?

Hazardous Area Classifications When electrical equipment is used in, around, or near an atmosphere that has flammable gases or vapors, flammable liquids, combustible dusts, ignitable fibers or flyings, there is always a possibility or risk that a fire or explosion might occur.

What are Group 1 and Group 2 hazardous materials?

Group define the type of hazardous material and (partly) the location of the surrounding atmosphere. Group is divided in three groups where Group I is reserved for mining locations. Group II is for explosive gases (Zone 0, 1 and 2) and Group III is for explosive dusts (Zone 20, 21 and 22).

What is a group II gas tank?

 Group II—Equipment intended for use in placeswith an explosive gas atmosphere other thanmines susceptible to firedamp. Group IIequipment is subdivided into three subgroups. Group IIA—Atmospheres containingpropane, or gases and vapors of equivalenthazard. Group IIB—Atmospheres containingethylene, or gases and vapors of equivalenthazard.