Tank-wagons, demountable tanks and battery-wagons:
(Reserved)

Tank-containers, tank swap bodies and MEGCs:
By derogation from the requirements of 6.8.2.4.2, periodic inspections shall be performed no later than every eight years and shall include a thickness check using suitable instruments. For such tanks, the leakproofness test and check for which provision is made in 6.8.2.4.3 shall be performed no later than every four years.