MIL-HDBK-1022A
a) Vapor line connections
b) Vessel liquid overfill protection
c) Vessel vapor overpressure and vacuum protection
d) Fire, explosion, and detonation protection
e) Detonation arrestors, flame arrestors, and flame
screens
f) Inerting, enriching, and diluting systems
g) Vapor compressors and blowers
h) Vapor recovery and vapor destruction units
2.13.4
Air Quality Control
2.13.4.1 Design Requirements. Regulatory requirements
pertaining to air quality control will vary according to
locality and to type and size of the petroleum vapor source.
Petroleum storage and dispensing facilities are common sources
of air pollution. Their emissions are typically restricted
through requirements in state and local regulations. Federal
regulations (40 CFR 60 Subparts Kb and XX) may also apply
depending on the product handled and size of the tank or
facility being constructed.
2.13.4.2 Aboveground Storage Tanks. Federal regulation 40
CFR 60 Subpart Kb requires that tanks used for the storage of
fuel with a design capacity greater than 19,000 gallons
(72 000 L) having a true vapor pressure greater than 0.75 psia
(5 kPa) at operating temperature must be equipped with either:
1) a fixed roof in combination with an internal floating pan;
2) an external floating roof equipped with a dual seal closure
device between the wall of the tank and the roof edge; or 3) a
closed vent system designed to collect all volatile organic
compound (VOC) vapors and gases discharged from the tank and a
control device designed to reduce VOC emissions by 95 percent
or greater. It is the design intent that most vertical
aboveground tanks will have internal honeycomb floating pans
with foam-filled fabric seals (primary and secondary) and that
vapor recovery will be used only if required by federal,
state, or local regulations for the type of fuel and type of
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