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 b. Paint Application. Precautions to be observed when paints are applied by brush, roller, or spray are
the same as those for mixing paints; in addition, the potential hazards from flammable or toxic solvents
are greater. Additional ventilation in confined spaces is needed. Depending upon location of the painting
operation and type of paints being used, respirators and protective clothing may also be needed to
comply with personnel protective precautions.
c. Ignition Sources. Steps shall be taken to ensure the absence of ignition sources while paint is being
applied. Prohibited activities include welding, smoking, hot work, open flame, and the energizing of
electrical circuits (except explosion-proof type) in the same and adjacent compartments and exterior work
areas. Areas such as fire, engine, and pump rooms shall be in a cold-iron condition before and during
paint application and until all paint fumes dissipate.
d. Highly Flammable Paints. Flashpoint labeling is a requirement for all paints and solvents. Personnel
shall be instructed to read and understand container labels before using the paint product. The size of
posted danger areas, amount of ventilation and degree of other fire and explosion preventive procedures
shall be increased prior to use of low-flashpoint paint materials.
e. Epoxy Paints. Epoxy-polyamide paints and most interior and tank paints have a flashpoint of about
37.8C (100F). Commercial exterior epoxy paints and silicone alkyd surface ship topside enamels
generally have flashpoints above 26.7 C (80 F). A few paints have lower flashpoints, some below 15.6
C (60 F), which present a much greater fire and explosion hazard.
f. Vinyl and Epoxy Paints. Personnel applying these paints by brush or roller should avoid skin contact
with the paint and its components by wearing solvent resistant, synthetic rubber or plastic gloves, and an
apron. Sleeves shall be kept rolled down. A face shield or chemical safety goggles shall be worn to
protect the face and eyes. Protective cream, Chemical Barrier (NSN 6850-00-244-4894) may be used on
exposed skin to act as a barrier, and for easier cleaning. Local exhaust or supply ventilation, or both,
must be used to control personnel exposure to solvent vapors.
painting the interior surfaces of a confined space, such as the inside of a tank.
a. Explosion-Proof Lamps. Explosion-proof lamps with shatterproof lenses, such as Crouse-Hinds
Model RCD-6 or equal, shall be installed. Lights shall be completely and properly assembled and in
operable condition prior to installation in the danger area. Bulbs shall not be replaced nor shall lights be
repaired within the danger area. Portable lights shall be hung using spark proof hooks and not wrapped
around nor draped over supports.
b. Gas-Free Testing. Periodic tests shall be conducted to ensure safe, gas-free working conditions. The
Marine chemist or competent person should conduct the initial test, with monitors conducting the follow-
up tests. During paint operations, gas testing shall continue as necessary to detect dangerous
accumulations of hazardous vapors.
c. Ventilation. During painting operations, all tanks and enclosed areas shall be properly ventilated by
installing explosion-proof ventilation equipment. There is a possibility that vented paint vapors will create
an explosion hazard outside the tank or compartment being painted. Therefore, venting and ventilation
shall continue for at least 1 hour after the operation has been completed, and until vapor concentrations
remain below 10 percent of the lower explosive limit (LEL).
2-15. Application by Spray. Due to the volume of material applied, the application of paints, varnishes,
lacquers, enamels, and other flammable liquids by the spray process is more hazardous than brush
application. Potentially harmful mists created by paint spraying operations add to the health hazard.
Spraying also deposits a flammable residue, which is subject to spontaneous ignition. The following
precautions for paint spraying include those for mixing and paint application.
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