True or False: Enclosures in Class 1 Division 1 and 2 locations are required to prevent an internal explosion from causing external explosions.

The statement is accurate because enclosures in Class 1 Division 1 and Division 2 locations are specifically designed to prevent the ignition of explosive atmospheres surrounding them by containing any potential internal explosion. In Class 1 Division 1, where ignitable concentrations of flammable gases or vapors are present continuously or for long periods, it’s crucial that equipment is constructed to ensure that an internal explosion does not lead to an ignition of the surrounding atmosphere.

In Division 2, although ignitable concentrations of flammable gases or vapors are typically not present during normal operations, equipment must still have robust protective measures in place. The design criteria for enclosures in such hazardous locations focus on containing any pressure buildup from an internal explosion and preventing it from escaping and igniting any flammable materials outside.

Maintaining such standards is vital for the safety of personnel, equipment, and the environment, reflecting the stringent requirements engineers and safety professionals must adhere to in hazardous areas.