33 CFR §183.586
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
A fuel tank is tested by performing the following procedures in the following order:
- (a)Perform the static pressure test under § 183.580.
- (b)If the tank is non-metallic, fill it to capacity with a gasoline that has at least a 50 percent aromatic content. Keep the fuel in the tank at 21 °C or higher for 30 days prior to testing.
- (c)Mount the tank on a test platform.
- (d)Fill the tank to capacity with water.
- (e)Cap and seal each opening in the tank.
- (f)Apply 25,000 cycles of pressure impulse at the rate of no more than 15 impulses per minute varying from zero to three PSIG to zero inside the tank top from a regulated source of air, inert gas, or water.
- (g)Perform the static pressure test under § 183.580.