Applies to all fixed extinguishing systems installed to meet an OSHA standard, other than automatic sprinklers (1910.159). Fixed systems not required by OSHA but whose discharge could expose employees to injury, death or adverse health effects from the agent are subject only to paragraphs (b)(4) to (b)(7) and (c); such systems in areas with no employee exposure are exempt. General requirements: components and agents designed and approved for the hazards they protect; if a system becomes inoperable, employees must be notified and temporary precautions taken until it is restored, with defects corrected by trained personnel; a distinctive discharge alarm or signal complying with 1910.165 and perceivable above ambient noise or light, unless discharge is immediately recognizable; effective safeguards warning employees against entering discharge areas where the atmosphere remains hazardous; hazard warning or caution signs at the entrance to and inside areas protected with agents in hazardous concentrations; annual inspection by a person knowledgeable in the system's design and function; weight and pressure of refillable containers checked at least semi-annually, with maintenance if net content or weight loss exceeds 5 percent or pressure loss exceeds 10 percent; factory charged nonrefillable containers without pressure indicators weighed at least semi-annually and replaced if they lose more than 5 percent of net weight; inspection and maintenance dates recorded on the container, on an attached tag or centrally, with the last semi-annual check record kept until the next check or for the life of the container, whichever is less; training for employees who inspect, maintain, operate or repair the systems, reviewed annually; no chlorobromomethane or carbon tetrachloride where employees may be exposed; corrosion-resistant construction in corrosive atmospheres; detection equipment meeting 1910.164; effective operation at expected climatic extremes; at least one manual discharge station per system, with manual devices identified as to the hazard protected; and PPE for immediate rescue of employees trapped by an agent discharge. Paragraph (c) on total flooding systems does not apply where employees cannot enter the area during or after discharge; otherwise, areas protected by total flooding systems with concentrations exceeding the maximum safe levels in 1910.162(b)(5) and (b)(6) require an emergency action plan under 1910.38, and every total flooding system needs a pre-discharge employee alarm complying with 1910.165 and automatic actuation by an approved fire detection device interconnected with that alarm, giving employees time to exit before discharge.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.