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43.1.6.5.1
Liquids shall be transported by means of closed containers, approved safety cans, or approved portable tanks or shall be transferred by means of a piping system. Open containers shall not be used for moving or storing liquids. [33:8.5.1]
43.1.6.5.2*
Wherever liquids are transferred from one container to another, both containers shall be effectively bonded and grounded to dissipate static electricity. [33:8.5.2]
43.1.6.5.3
Containers that supply spray nozzles shall be of the closed type or shall be provided with metal covers that are kept closed. Containers that do not rest on the floor shall have supports or shall be suspended by wire cables. Containers that supply spray nozzles by gravity flow shall not exceed 10 gal (38 L) capacity. [33:8.5.3]
43.1.6.5.4
Original shipping containers shall not be subjected to air pressure for supplying spray nozzles. [33:8.5.4]
43.1.6.5.5
Containers that are pressurized to supply spray nozzles, air storage tanks, and coolers shall comply with all applicable requirements of the ASME Boiler and Pressure Vessel Code, Section VIII, for construction, tests, and maintenance. [33:8.5.5]
43.1.6.5.5.1
Containers that meet the following requirements need not meet the requirements of the ASME Boiler and Pressure Vessel Code, Section VIII, for construction, tests, and maintenance:
  1. Pressure containers less than 6 in. (150 mm) in diameter
  2. Pressure containers that operate at less than a gauge pressure of 15 psi (1.03 kPa)
  3. Siphon-type spray cups
[33:8.5.5.1]
43.1.6.5.6
If a heater is used to heat the liquid being sprayed, it shall be low-pressure steam, low-pressure hot water, or electric. [33:8.5.6]
43.1.6.5.6.1
If electric heaters are used to heat the liquid being sprayed, the electric heater shall be approved and listed for the specific location in which it is used. (See Chapter 6 of NFPA 33.) [33:8.5.6.1]
43.1.6.5.6.2
Heaters shall not be located in spray booths or other locations subject to the accumulation of deposits of combustible residue. [33:8.5.6.2]
43.1.6.5.7
Agitators, if used, shall be driven by compressed air, water, low-pressure steam, or electricity. [33:8.5.7]
43.1.6.5.7.1
If the agitators are powered by an electric motor, the motor shall meet the requirements of Chapter 6 of NFPA 33. [33:8.5.7.1]
43.1.6.5.8
Methods for cleaning paint circulation systems shall meet the requirements of Chapter 18 of NFPA 30. [33:8.5.8]
43.1.6.5.9
Compressed air shall be permitted to be used for cleaning paint delivery hose for individual applicators in a spray booth, provided both of the following requirements are met:
  1. The booth ventilation is operating.
  2. The maximum air pressure does not exceed the maximum working pressure of any component of the piping or hose system.
[33:8.5.9]

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