California Code of Regulations › Title 8 - Industrial Relations › Division 1 - Department of Industrial Relations › Chapter 4 - Division of Industrial Safety › Subchapter 7 - General Industry Safety Orders › Group 20 - Flammable Liquids, Gases and Vapors › Article 137 - Spray Coating Operations › Section 5451 - Flammable and Combustible Liquids-Storage and Handling

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) The storage of flammable liquids or
						liquids with a flashpoint greater than 199.4°F (93°C) (formerly
						designated Class IIIB Combustible liquids) in connection with spraying
						operations shall conform to the requirements of Article 141, where
						applicable.
(b) Bulk storage of
						flammable liquids or liquids with a flashpoint greater than 199.4°F
						(93°C) (formerly designated Class IIIB Combustible liquids) shall be in a
						separate, properly constructed building detached from other important buildings
						or cut off from them by construction having at least one-hour fire resistance
						rating.
NOTE: Lesser quantities of flammable or combustible
						  liquids may be stored for use within a building under conditions meeting the
						  other provisions of this section.
(c) The quantity of flammable liquids or
						liquids with a flashpoint greater than 199.4°F (93°C) (formerly
						designated Class IIIB Combustible liquids) kept in the vicinity of spraying
						operations shall be the minimum required for operations and shall not exceed a
						supply for 1 day or one shift.
(d)
						Original closed containers, approved portable tanks, approved safety cans, or a
						properly arranged system of piping shall be used for transporting flammable
						liquids or liquids with a flashpoint greater than 199.4°F (93°C)
						(formerly designated Class IIIB Combustible liquids). Open or glass containers
						shall not be used for transportation or storage.
(e) The withdrawal of flammable liquids or
						liquids with a flashpoint greater than 199.4 °F (93 °C) (formerly
						designated Class IIIB Combustible liquids) from containers and the filling of
						containers, including portable mixing tanks, shall be done only in a suitable
						mixing room or in a spraying area when the ventilating system is in operation.
						Precautions shall be taken to protect against liquid spillage and sources of
						ignition.
(f) Except as provided in
						(h), the withdrawal of flammable liquids and liquids with a flashpoint greater
						than 199.4 °F (93 °C) (formerly designated Class IIIB Combustible
						liquids) from containers having a capacity of greater than 60 gallons shall be
						by approved pumps.
(g) Containers
						supplying spray nozzles shall be of closed type or provided with metal covers
						kept closed. Containers not resting on floors shall be on substantial supports
						or suspended by wire cables. Containers supplying spray nozzles by gravity flow
						shall not exceed 10 gallons capacity.
(h) Original shipping containers shall not be
						subjected to air pressure for supplying spray nozzles. Pressure vessels
						supplying spray nozzles shall be of limited capacity, not exceeding that
						necessary for one day's operation; shall be designed and approved for such use;
						shall be provided with a visible pressure gauge; and shall be provided with a
						relief valve; all in conformance with the Unfired Pressure Vessel Safety
						Orders.
(i) Containers under
						pressure supplying spray nozzles, air storage tanks and coolers shall conform
						to the standards of the Unfired Pressure Vessel Safety Orders for construction,
						tests and maintenance.
(j) All
						containers or piping to which is attached a hose or flexible connection shall
						be provided with a shutoff valve at the connection. Such valves shall be kept
						shut when spraying operations are not being conducted.
EXCEPTION: When a circulating system is used and it is
						  provided with an automatically operated anti-runaway control.
(k) When a pump is used to deliver products,
						automatic means shall be provided to prevent pressure in excess of the design
						working pressure of accessories, piping and hose.
(l) All pressure hose and couplings shall be
						inspected at regular intervals appropriate to the service. With the hose
						extended, the hose and couplings shall be tested using the "in service maximum
						operating pressures." Any hose showing material deteriorations, signs of
						leakage or weakness in its carcass or at the couplings shall be withdrawn from
						service.
(m) Unless flammable and
						combustible liquid piping, hose and equipment have been designed to meet the
						requirements of high pressure processes (those employing pressures in excess of
						100 psig) such equipment shall not be used for this purpose.
(n) If flammable liquids or liquids with a
						flashpoint greater than 199.4°F (93°C) (formerly designated Class IIIB
						Combustible liquids) are supplied to spray nozzles by positive displacement
						pumps, the pump discharge line shall be provided with an approved relief valve
						discharging to a safe detached location, or a device provided to stop the prime
						mover if the discharge pressure exceeds the safe operating pressure of the
						system.
(o) Piping systems
						conveying flammable liquids or liquids with a flashpoint greater than
						199.4°F (93°C) (formerly designated Class IIIB Combustible liquids)
						shall be of steel or other material having comparable properties of resistance
						to heat and physical damage; they shall be so installed that a rupture of the
						system for any reason is unlikely. Piping systems shall be properly bonded and
						grounded.
(p) Whenever flammable
						liquids or liquids with a flashpoint greater than 199.4°F (93°C)
						(formerly designated Class IIIB Combustible liquids) are transferred from one
						container to another, both containers shall be effectively bonded and grounded
						to dissipate static electricity.
(q) If a spray liquid heater is used, it
						shall be low-pressure, steam or hot water type, or electric. If electric, it
						shall be approved and listed for the specific location in which it is used.
						(See Section
						5449.) Heaters shall not be located
						in spray booths nor other locations subject to the accumulation of deposits or
						combustible residue. Agitators, if used, shall be driven by compressed air,
						water, or low-pressure steam, or electric. If powered by an electric motor, the
						motor shall conform to the requirements of Section
						5449.
1.
						  Amendment filed 7-16-76; effective thirtieth day thereafter (Register 76, No.
						  29).
2. Amendment of subsections (b), (c), (e) and (j) filed
						  12-5-86; effective thirtieth day thereafter (Register 86, No.
						  51).
3. Amendment of section heading and section filed 5-5-2014;
						  operative 5-6-2014 pursuant to Government Code section
						  11343.4(b)(3)
						  (Register 2014, No. 19).
Note: Authority cited: Section
							 142.3, Labor
							 Code. Reference: Section
							 142.3, Labor
							 Code.