Final answer:
Portable fire extinguisher requirements can vary but commonly must be on every floor and in every hazardous area. Knowledge of fire safety equipment location is essential for safety in environments with potential fire hazards.
Step-by-step explanation:
The requirement for a portable fire extinguisher can vary depending on specific regulations and building codes, which may dictate that they should be placed on every floor, in every hazardous area, or both.
In certain settings, like healthcare facilities, additional requirements could state that one must be available for a set number of patient-sleeping rooms. Understanding the location of fire safety equipment in any building, especially those with open flames and flammable chemicals, is crucial for safety and often part of standard laboratory and workplace safety protocols.