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.

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MIL-PRF-23236D

3.2.2.3 Hazardous air pollutant (HAP) content of Types V, VI, VII, VIII, and VIIIa coatings. When evaluated

as specified in 4.5.6, the content of HAPs in each individual coating of Types V, VI, VII, VIII, and VIIIa shall be

less than the VOC limit prescribed for the specific types. Within this limitation and the requirement that the finished

coating meet all requirements of this specification, Types V, VI, and VII coating systems solvent selection is the

responsibility of the manufacturer.

3.2.3 Hazardous pigments and additives.

3.2.3.1 Types V, VI, VII, VIII, and VIIIa. When tested as specified in 4.5.10, the content of each soluble metal

and the total content of each metal of the coating shall be less than the values listed in tables I and II. In addition,

asbestos and asbestiform pigments shall be less than 0.5 percent by weight (wt%) of the dry paint film. Crystalline

silica shall not exceed 0.1 wt%. If the total metal content for an individual metal is less than the allowed soluble

metal content for that metal, the total metal value may be submitted for the soluble metal value and the actual test for

soluble metal need not be performed.

TABLE I. Soluble metals content for Type V, VI, VII, VIII, and VIIIa coatings.

Soluble metal and/or its compound in

Maximum, mg/L

each individual dry paint

Antimony

Arsenic

Barium (excluding barite)

100

Beryllium

0.75

Cadmium

Chromium (VI)

Chromium and/or chromium (III)

560

Cobalt

Copper

Fluoride salts

180

Lead

Mercury

0.2

Molybdenum

350

Nickel

Selenium

Silver

Tantalum

100

Thallium

Tungsten

100

Vanadium

Zinc

250