ATEX zone 0

ATEX Zone 0 is an area where an explosive atmosphere of flammable gases, vapors or mists is continuously present, or present for long periods of time. This is the highest risk classification in the ATEX system.

When is ATEX Zone 0 relevant?

You find ATEX Zone 0 in extreme cases, such as:

• Inside chemical tanks or reactors containing flammable liquids.
• Confined spaces where gas or vapor accumulation is permanent.
• Certain offshore modules with continuous hydrocarbon presence.

For you as a safety officer or plant manager, ATEX Zone 0 means only specially certified “intrinsically safe” equipment may be used. Even ATEX Zone 1 tools are not suitable here. Maintenance often requires shutdowns, inerting, or specialized robotic equipment.

Extra explanation about ATEZ zone 0

ATEX gas zones overview:

• Zone 0 – continuous explosive atmosphere.
• Zone 1 – likely during normal operation.
• Zone 2 – abnormal or short-lived presence.

Pinovo’s blasting technology is not intended for direct use in Zone 0, because:

• Continuous explosive atmosphere demands “intrinsic safety” (IS) or specially designed equipment.
• Vacuum blasting with grit requires air movement that could disturb the explosive medium.

However, Pinovo enables you to blast safely just outside Zone 0 areas (for example, on tank exteriors or adjacent structures classified as Zone 1). This still provides the benefits of dust-free, ATEX-safe operation while protecting critical assets.