Covers flammable liquids whose flashpoint is 199.4 F (93 C) or lower, other than bulk transport and fuel oil tanks connected to oil burning equipment. Only approved containers and portable tanks are used; approved safety cans or DOT containers are used for 5 gallons or less (very viscous liquids may stay in original shipping containers, and original containers may be used for 1 gallon or less); flammable liquids are not stored in exits, stairways or passageways. Indoors, no more than 25 gallons may be kept in a room outside an approved storage cabinet; cabinets (built as specified for wooden cabinets, or approved metal) are labelled 'Flammable-Keep Away from Open Flames', hold at most 60 gallons of Category 1 to 3 liquid or 120 gallons of Category 4 liquid, and no more than three cabinets may be in one storage area; beyond that an inside storage room is needed, built to NFPA 251-1969 fire resistance with 4-inch sills or ramps (or a lowered floor or grated trench), self-closing fire doors, liquid-tight wall-floor joints, Class I Division 1 electrical equipment, gravity or mechanical exhaust starting within 12 inches of the floor giving at least 6 air changes an hour, a 3-foot clear aisle, no stacking of containers over 30 gallons, and quantities within Table F-2. Near spraying operations only the minimum, ordinarily no more than a day's or shift's supply, is kept. Outdoors, container piles (containers of 60 gallons or less) are limited to 1,100 gallons, separated by 5 feet and kept 20 feet from buildings, with a 12-foot access way within 200 feet and grading or 12-inch curbs or dikes with drainage; portable tanks stay 20 feet from buildings with the specified separations and emergency venting per NFPA 30-1969. Fire control: a 20-B extinguisher outside and within 10 feet of the door of any room storing more than 60 gallons, another 25 to 75 feet from outside storage, sprinklers to NFPA 13-1969, and a 20-B:C extinguisher on every tank truck. Dispensing more than 5 gallons at a time is separated by 25 feet or 1-hour construction with spill control and ventilation that holds vapor to no more than a tenth of the lower flammable limit; Category 1 to 3 transfers are bonded; transfer only by closed piping, safety cans, top-drawing devices or gravity or pump through approved self-closing valves, never by air pressure; dispensers are protected from collision and approved. At point of use, Category 1 to 3 liquids stay in closed containers when not in use, spills are cleaned up promptly and no ignition source is within 50 feet. Service and refuelling areas use approved containers or underground or aboveground portable tanks, NFPA 385-1966 tank trucks, approved hose and automatic-closing nozzles without latch-open devices, no abandoned underground tanks, a remote emergency power shutoff for dispensers, heaters mounted as specified, no smoking or open flames with posted signs, engines off while fuelling, and a 20-B:C extinguisher no further than 75 feet from every pump, dispenser, fill opening and service area. Paragraph (i) sets detailed rules for tank storage (materials, design codes, spacing, normal and emergency venting sized by Table F-10, vent piping, drainage and dikes, underground tank location, cover and corrosion protection, tanks inside buildings with heat-actuated valves and overflow protection, supports and fire-resistive protection, flood and earthquake precautions, control of ignition sources, and strength and tightness testing before service); paragraph (j) sets piping, valve and fitting rules with hydrostatic testing at 150 percent (or pneumatic at 110 percent, at least 5 psig) held for at least 10 minutes; paragraph (k) covers marine service stations (dispensers 20 feet from fixed ignition sources, automatic-closing nozzles, pier tank limit of 1,100 gallons, shore shutoff valves and grounding of piping).
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.