Three factors must be considered in determining the proper distribution of fire extinguishers:
1) The floor area of the protected space. 2) The maximum travel distance to a fire extinguisher. 3) The location of fire extinguishers in relationship to normal paths of exit travel.
OSHA requires that all employees have access to an extinguisher within 75 feet travel-distance in locations such as offices, classrooms, and assembly halls.
All employees should have access to an extinguisher within 50 feet travel-distance in such locations as workshops, storage areas, research operations, garages, warehouses, or service and manufacturing areas.
Each year a portable fire extinguisher is required to receive an "annual maintenance." The NFPA 10 Sec. 3.3.18 describes an annual maintenance as " A thorough examination of the fire extinguisher. It is intended to give maximum assurance that a fire extinguisher will operate effectively and safely. It includes a thorough examination for physical damage or condition to prevent its operation and any necessary repair or replacement
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