Scope. This section covers painting operations connected with maintenance of structures, equipment and
gear at the marine terminal and of transient equipment serviced at the terminal. It does not apply to overall painting of terminal structures under
construction, major repair or rebuilding of terminal structures, or portable spraying apparatus not used regularly in the same location.
"Spraying area" means any area where flammable vapors, mists or combustible residues, dusts or
deposits may be present due to paint spraying operations.
"Spray booth" means an enclosure containing a flammable or combustible spraying operation and
confining and limiting the escape of paint, vapor and residue by means of a powered exhaust system.
"Approved" means, for the purpose of this section, that the equipment has been approved for the
specified use by a nationally recognized testing laboratory.
Spray painting requirements for door and outdoor spraying areas and booths.
Shut-off valves, containers or piping with attached hoses or flexible connections shall have
shut-off valves closed at the connection when not in use.
Pumps used to transfer paint supplies shall have automatic pressure-relieving devices.
Hoses and couplings shall be inspected before use. Hoses showing deterioration, leakage or weakness
in the carcass or at the couplings shall be removed from service.
No open flame or spark-producing equipment shall be within
20 feet (6.1 m) of a spraying area unless it is separated from the spraying area by a fire-retardant partition.
Hot surfaces shall not be located in spraying areas.
Whenever combustible residues may accumulate on electrical installations, wiring shall be in
rigid conduit or in boxes containing no taps, splices or connections.
Portable electric lights shall not be used during spraying operations. Lights used during
cleaning or repairing operations shall be approved for the location in which they are used.
When flammable or combustible liquids are being transferred between containers, both containers
shall be bonded and grounded.
Spraying shall be performed only in designated spray booths or spraying areas.
Spraying areas shall be kept as free from combustible residue accumulation as
Residue scrapings, debris, rags, and waste shall be removed from the spraying area as they
Spraying with organic peroxides and other dual-component coatings shall only be conducted in
sprinkler-equipped spray booths.
Only the quantity of flammable or combustible liquids required for the operation shall be allowed in
the spraying area, and in no case shall the amount exceed a one-day supply.
Smoking shall be prohibited and "No Smoking" signs shall be posted in spraying and paint storage
Additional requirements for spraying areas and spray booths.
Distribution or baffle plates shall be of noncombustible material and shall be removable or
accessible for cleaning. They shall not be located in exhaust ducts.
Any discarded filter shall be removed from the work area or placed in water.
Filters shall not be used when the material being sprayed is highly susceptible to spontaneous
heating and ignition.
Filters shall be noncombustible of an approved type. The same filter shall not be used when spraying
with different coating materials if the combination of materials may spontaneously ignite.
Spraying areas shall be mechanically ventilated for removal of flammable and combustible vapor and
Mechanical ventilation shall be in operation during spraying operations and long enough thereafter
to exhaust hazardous vapor concentrations.
Rotating fan elements shall be nonsparking or the casing shall consist of or be lined with
Piping systems conveying flammable or combustible liquids to the spraying booth or area shall be
made of metal and be both bonded and grounded.
Air exhausted from spray operations shall not contaminate makeup air or other ventilation intakes.
Exhausted air shall not be recirculated unless it is first cleaned of any hazardous contaminants.
Original closed containers, approved portable tanks, approved safety cans or a piping system shall
be used to bring flammable or combustible liquids into spraying areas.
If flammable or combustible liquids are supplied to spray nozzles by positive displacement pumps,
the pump discharge line shall have a relief valve discharging either to a pump section or detached location, or the line shall be equipped with a
device to stop the prime mover when discharge pressure exceeds the system's safe operating pressure.
Wiring, motors and equipment in a spray booth shall be of
approved explosion-proof type for Class I, Group D locations and
conform to subpart S of Part 1910 of this chapter for Class I, Division
1, Hazardous Locations. Wiring, motors and equipment within 20 feet
(6.1m) of any interior spraying area and not separated by vapor-tight
partitions shall not produce sparks during operation and shall conform
to the requirements of subpart S of Part 1910 of this chapter for Class
I, Division 2, Hazardous Locations.
Outside electrical lights within 10 feet (3.05m) of spraying
areas and not separated from the areas by partitions shall be enclosed
and protected from damage.
Additional requirements for spray booths.
Spray booths shall be substantially constructed of noncombustible material and have smooth interior
surfaces. Spray booth floors shall be covered with noncombustible material. As an aid to cleaning, paper may be used to cover the floor during
painting operations if it is removed after the painting is completed.
Spray booths shall be separated from other operations by at least 3 feet (0.91m) or by
fire-retardant partitions or walls.
A space of at least 3 feet (0.91m) on all sides of the spray booth shall be maintained free of
storage or combustible materials.
Metal parts of spray booths, exhaust ducts, piping and airless high-pressure spray guns and
conductive objects being sprayed shall be grounded.
Electric motors driving exhaust fans shall not be located inside booths or ducts.
Belts shall not enter ducts or booths unless the belts are completely enclosed.
Exhaust ducts shall be made of steel, shall have sufficient access doors to permit cleaning, and
shall have a minimum clearance of 18 inches (0.46m) from combustible materials. Any installed dampers shall be fully opened when the ventilating
system is operating.
Spray booths shall not be alternately used to spray different types of coating materials if the
combination of the materials may spontaneously ignite unless deposits of the first material are removed from the booth and from exhaust ducts before
spraying of the second material begins.
[62 FR 40202, July 25, 1997; 65 FR 40942, June 30, 2000]