What is Zone area classification?
2 min read
Asked by: Damaris Taylor
Zone 1: An area in which an explosive gas atmosphere is likely to occur in normal operation; 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 Zone 1 area?
A Zone 1 area is classified as 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. These are typically process areas where gases are more likely to be present.
What are Zone 2 areas?
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. These areas only become hazardous in case of an accident or some unusual operating condition.
What is the difference between Zone 21 and Zone 22?
In a hazardous dust environment, an ATEX Zone 21 is classified as an area that is classified ‘as a place in which an explosive atmosphere in the form of a cloud of combustible dust in the air is likely to occur occasionally during normal operation’ whereas an ATEX Zone 22 is classified as ‘a place in which an explosive …
How many zones are available as per hazardous area classification?
In order to classify this danger an installation is divided into areas of risk depending upon the amount of time the hazardous is present. These areas are referred to as Zones. For gases and vapours and dusts and fibres there are three zones.
What areas are zone 3?
Download coordinates as: KML
| Station | Local authority | Managed by |
|---|---|---|
| East Putney | Wandsworth | London Underground |
| Elverson Road | Lewisham | Docklands Light Railway |
| Forest Gate | Newham | TfL Rail |
| Forest Hill | Lewisham | London Overground |
What are the 3 zone classification?
Zone 0: Explosive atmosphere for more than 1000h/yr. Zone 1: Explosive atmosphere for more than 10, but less than 1000 h/yr. Zone 2: Explosive atmosphere for less than 10h/yr, but still sufficiently likely as to require controls over ignition sources.
What is ATEX Zone?
ATEX generally refers to the hazard of explosive atmospheres occurring in the workplace due to the presence of flammable gasses or combustible dust mixed in air, which can give rise to the risk of explosion.
