MIL-PRF-23236 Coating Systems For Ship StructuresThis specification covers four types of air pollution regulated ship and structure coatings that comply with the National Emission Standards for Hazardous Air Pollutants \(NESHAP\) for shipbuilding for state and federal regulations. There are nine classes of coating systems. There are four grades of coating systems based on temperature of application and cure. In addition to tanks, all paint systems qualified to this specification are suitable for use on any ship structures, interior or exterior, for corrosion control. Except for trace levels, all types are free of lead, chromium, cadmium, and asbestos \(see 3.2.3\). All types have levels of hazardous air pollutants \(HAPs\) that do not exceed applicable NESHAP levels \(see 3.2.2.2\). Dry Type V, VI, VII, and VIII coating residues and debris are non-hazardous waste under U.S. Environmental Protection Agency \(USEPA\) regulations in effect on the date of this specification. Type VII coating will not have any solvent added to either the base resin component or the hardener component.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13

MIL-PRF-23236D

1.2.2 Classes. The classes of coating systems are as follows:

Class 5 - A coating system for use in fuel tanks, seawater ballasted fuel tanks, seawater tanks, bilges, and

other ship structures, interior and exterior. Class 5 coatings are not for use in tanks that may be used for fresh or

potable water.

Class 6 - Class 6 coatings no longer used.

Class 7- A coating system for use in dedicated seawater ballast tanks. Class 6 coatings are not for use in

tanks that may be used for freshwater, potable water, fuels, or other hydrocarbons.

Class 8 - Class 8 no loner used.

Class 9 - A coating system for use in dedicated potable or freshwater tanks. Class 7 coatings are not for use

in tanks that may be used for seawater, fuels, or other hydrocarbons.

Class 10 - Class 10 coatings no longer used.

Class 11 - A coating system for use in dedicated boiler feedwater (pure water) tanks. Class 8 coatings may

not be used for seawater, potable water, freshwater, fuels, or other hydrocarbons.

Class 12 - Class 12 coatings no longer used.

Class 13 - A coating system for use in dedicated chemical holding (ship sewage/waste) tanks (CHT tanks).

Class 9 coatings may not be used for seawater, potable water, freshwater, fuels, or other hydrocarbons.

Class 14 - Class 14 coatings no longer used

Class 15a - A coating system intended as a repair or touch-up coating for use over oily surfaces that are

prepared to bare metal surfaces where paint has been removed to the bare metal substrate.

Class 15b - A coating system intended as a repair or touch-up coating for use over wet surfaces that are

prepared to bare metal surfaces where the paint has been removed to the bare metal substrate.

Class 15c - A coating system intended as a repair or touch-up coating for application and cure under (salt)

water.

Class 16 - Class 16 coatings are no longer used. High wear resistant coatings are available in MIL-PRF-

32171

Class 17 - A coating system intended for use on properly cleaned and prepared bilge surfaces.

Class 18 - A single-coat coating system.

Class 19- A coating system intended for use on well deck overhead areas of Landing Craft Air Cushion

(LCAC) capable ships.

1.2.3 Grades. The grades of coating systems are as follows:

Grade A - A coating system which can be applied down to a temperature of 32 F (0 C) and cured down to

a temperature of 25 F (-4 C).

Grade B - A coating system which is to be applied and cured at temperatures above 32 F (0 C) up to

49 F (10 C).

Grade C - A coating system which is to be applied and cured at or above a temperature above 50 F

(11 C).

Grade D - Powder coatings cured at a high temperature in accordance with manufacturer's instructions in

order to meet all performance requirements of this specification.