Which of the following is an acceptable condition for the height of ignition sources?

The requirement for ignition sources to be positioned at least 18 inches above the floor is important for several reasons related to safety and compliance with fire codes.

This height helps to minimize the risk of accidental ignition from spills or leaks of flammable liquids or gases that might accumulate on the floor. By raising ignition sources above this height, it reduces the likelihood that vapors, which are typically heavier than air and may settle closer to the ground, will come into contact with those sources. This positioning aids in preventing potentially dangerous situations that could lead to fires or explosions.

Various standards and regulations, such as those outlined by the National Fire Protection Association (NFPA) or similar bodies, often endorse this requirement to enhance safety in environments where flammable materials are present. Being vigilant about ignition source placement is a critical practice in risk management within any facility handling hazardous materials.