ATEX zone 0 (gas)
Explosion hazard in ATEX Zone 0
In an ATEX environment, there is an explosive atmosphere hazard. To minimize the risk of explosion, European directives have been established for these potentially explosive areas. The guidelines divide an ATEX environment into different ATEX zones, each with its own risks and regulations. There are a total of three gas zones and three dust zones. In this blog, we tell you everything about ATEX Zone 0, a gas zone.
ATEX Zone 0 is one of the most hazardous gas zones. In this
ATEX zone
, a gas explosive atmosphere is continuously or for long periods present. This means there is a high risk of explosion in ATEX Zone 0. Even a small spark or a minor increase in temperature can cause an explosion. The presence of flammable gases, such as methane, hydrogen, acetylene, and propane, makes the environment extremely sensitive to ignition.
When is ATEX Zone 0 applicable?
ATEX Zone 0 is defined as an area where an explosive atmosphere is continuously, for long periods, or frequently present during normal operations. This can be the case when an explosive atmosphere is present for more than 10% of the operational time. Companies dealing with this zone must comply with strict safety standards and procedures to ensure the safety of workers and equipment.
Safety measures and certification
Devices and systems used in ATEX Zone 0 must meet various requirements and obtain the appropriate ATEX certification. The same requirements apply to ATEX Zone 0 as for Zone 1 and Zone 21 equipment, with additional requirements. Additionally, regular risk assessments must be carried out. A common application is monitoring the temperature of an explosive mixture.
Equipment used in ATEX Zone 0 falls under Category 1 equipment. Category 1 G equipment can also be used in ATEX Zone 0. Category 1 equipment must provide a very high level of protection because there is a very high risk in Zone 0 and Zone 20. All equipment in Category 1 is therefore designed to operate without producing sparks, hot surfaces, or other sources of ignition that could cause an explosion. Additionally, safety must be maintained even if two independent faults occur.
DEKRA offers comprehensive services to meet your ATEX obligations. We can investigate whether you are subject to ATEX regulations and prepare a detailed explosion safety document. Additionally, we have extensive testing capabilities as a notified body. Do you want to know more about explosion safety and ATEX zones? Feel free to contact one of our experts.
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