30 C.F.R. § 36.50 Tests of fuel tank.
Title 30 - Mineral Resources
The fuel tank shall be inspected and tested to determine whether: (a) It is fuel-tight, (b) the vent maintains atmospheric pressure within the tank, and (c) the vent and closure restrict the outflow of liquid fuel.
Title 30: Mineral Resources
PART 36—APPROVAL REQUIREMENTS FOR PERMISSIBLE MOBILE DIESEL-POWERED TRANSPORTATION EQUIPMENT
Subpart C—Test Requirements
§ 36.50 Tests of fuel tank.