Regulation 4, also referred to as LA Chief's Regulation 4, entails a mandatory provision for specific categories of structures situated in Los Angeles. The primary objective underlying Regulation 4 testing is to ascertain the operational efficacy of fire safety, fire suppression, and fire detection systems within a building, ensuring their capability to safeguard both the premises and its occupants in the event of a fire outbreak.
As stipulated by the Los Angeles Fire Department, Certification under Regulation 4 is obligatory for buildings categorized as "high-hazard" or engaged in providing "essential services." These encompass establishments such as hospitals, schools, high-rise buildings, and other facilities that accommodate a substantial number of individuals. The testing procedure must be conducted by accredited contractors and encompasses a comprehensive evaluation of the building's fire safety mechanisms, encompassing fire alarms, sprinkler systems, standpipes, and other fire suppression systems.