This hazardous area work permit:
Hazardous area classification is the process of systematically analyzing and classifying the environment where flammable/explosive atmospheres may occur using national or internationally recognised and approved classification techniques. The classification process determines the extent of Zone 0, 1, 2, 20, 21 and 22 hazardous areas based on an assessment of the various grades of release applicable to the plant, equipment and fittings under review.
In addition, classification may determine the fluid and flammable/explosive atmosphere spark ignition characteristics (used to assign a gas group) and auto-ignition temperature (used to assign a temperature class), to enable the selection, installation and maintenance of suitably approved apparatus.
A hazardous area work permit is a document that is required to be completed by a person or workgroup that is planning to work in an area that has combustible dusts or has been assessed to be hazardous.
The permit is designed to ensure that the workers understand the risks associated with working in a hazardous area and have taken the necessary precautions to protect themselves, particularly with electrical equipment and electrical installations in hazardous areas or where there is an ignition source risk.
Note: A hazardous area permit to work system should be kept on site, near the work area and be available for inspection by any authorised person.
There are provisions in the hazardous area work permit for (but, not limited to) the following: