UFC 3-460-03
21 JANUARY 2003
tanks. They must also meet the requirements of Uniform Fire Code (UFC) Article 52, Fuel
Dispensing Stations, and UFC Article 79, Flammable and Combustible Liquids, and will provide a
minimum two-hour fire rating (see UFC Appendix Standard A-II-F, and UL 2085, Standard for
Protected Aboveground Tanks for Flammable and Combustible Liquids). Tanks holding jet fuel
must have a stainless steel inner tank. See MIL-HDBK-1022A for additional requirements.
NOTE: Many popular manufacturers (even some that are GSA-listed) do not meet the above
requirements; verify performance before purchasing.
7.2.1.7. Rectangular. Where building separation is not an issue and where dikes can be
constructed, a rectangular-type tank may be acceptable. Follow NFPA 30, NFPA 30A, NFPA 31,
Standard for the Installation of Oil Burning Equipment, and UL 142. Where secondary
containment is not required, such as small heating tanks, an exposed aggregate concrete-encased
tank may be desirable. Such tanks are low profile, attractive, and provide a low level of secondary
containment.
7.2.2. Belowground. Tanks must be constructed to meet requirements of NFPA 30, NFPA 30A, and
NFPA 31. Additionally, follow 40 CFR 280 and state environmental laws.
7.2.2.1. Horizontal Cylindrical. New tanks should be factory-constructed Type II double-walled
tanks complying with UL 58 criteria. Slope the tank 1% toward the water drain. See
MIL-HDBK-1022A for requirements for new tanks.
7.2.2.2. Underground Vertical (Cut-and-Cover). These tanks are primarily used for oversea
locations.
The design typically conforms with United States Air Forces in Europe
(USAFE)/NATO standard. This type of tank is not typically constructed in CONUS.
7.3. Maintenance of Storage Tanks.
7.3.1. Aboveground. All aboveground storage tanks are carefully selected and maintained to prevent
fuel evaporation. General maintenance requirements are determined by the tank components.
7.3.1.1. Tank Surfaces. Only touch-up painting is done by LFM personnel. Painting the entire
tank is usually done under contract. The outside of petroleum fuel storage tanks is painted to
comply with applicable portions of Navy Guide Specification, Section 09971, Coating of Steel
Structures for Atmospheric Service (Navy & Air Force). The interior is painted to applicable
portions of Navy Guide Specification, Section 09973, Lining of Welded Steel Petroleum Fuel
Tanks (Air Force). The projected life of the interior coating system is over 30 years. Do not
recoat the interior of tanks unless the coating has failed. Because of weathering and aesthetics, the
exterior of a tank needs to be repainted more frequently than the interior. Apply and or maintain
non-slip coatings or tape on the roof, walkways, and ladder rungs, where surfaces become slippery
when wet.
7.3.1.2. Interior surface maintenance, including inspection for sludge deposits and corrosion, is on
a scheduled recurrent basis according to requirements of paragraph 10.6, with cleaning and repair
as required.
7.3.1.2.1. Cleaning of interior surfaces will follow the procedures in Chapter 12, if cleaned by
contract. For in-house-type cleaning, the procedures given in Chapter 11 will apply.
7.3.1.2.2. Carefully inspect the underside of the tank roof for signs of weakness and corrosion
due to oxygen in the vapor.
7.3.1.2.3. Perform touch-up painting as required.
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