Final answer:
In aircraft hangars, any pit or depression below the level of the hangar floor shall be classified as a Class I, Division 2 location that shall extend up to said floor level. Class I, Division 2 locations are classified as areas where flammable gases or vapors may be present under normal operating conditions in quantities sufficient to produce ignitible mixtures, but which are not likely to exist under abnormal conditions. This classification ensures that appropriate safety measures are taken to prevent the ignition of flammable substances and maintain a safe working environment.
Step-by-step explanation:
In aircraft hangars, any pit or depression below the level of the hangar floor shall be classified as a Class I, Division 2 location that shall extend up to said floor level.
Class I, Division 2 locations are classified as areas where flammable gases or vapors may be present under normal operating conditions in quantities sufficient to produce ignitible mixtures, but which are not likely to exist under abnormal conditions.
This classification ensures that appropriate safety measures are taken to prevent the ignition of flammable substances and maintain a safe working environment.