A fuel tank is tested by performing the following procedures in the following order:
- (a) Perform the static pressure test under § 183.580.
- (b) Perform the pressure impulse test under § 183.586.
- (c) Secure the tank to the platform of a tank rocker assembly.
- (d) Fill the tank to one-half capacity with water.
- (e) Cap and seal each opening in the tank.
- (f) Apply 500,000 cycles or rocking motion 15 degrees to each side of the tank centerline at the rate of 15 to 20 cycles a minute. The axis of rotation of the rocker and fuel tank must be perpendicular to the centerline of the tank length at a level six inches or less above or below the tank's bottom.
- (g) Perform the static pressure test under § 183.580.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by USCG-1999-5832, 64 FR 34716, June 29, 1999]