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1. During the test, a uniformly distributed load equivalent to the difference between the rated mass and the tare weight of the container should be placed in the container and fully bolted.
2. The ground on which the offshore container falls should be a flat concrete floor or other hard surface. The ground may be covered with planks, which shall not exceed 50 mm in thickness.
3. Lift the marine container tilted so that the angle between the side beam and the end beam connected to the lowest angle on the bottom of the container and the ground is not less than 5°. On the bottom surface of the container, the height difference between the lowest corner point and the highest corner point should not be greater than 400 mm.
4. During testing, the corner with the worst stiffness should be selected as the lowest impacted corner.
5. The lowest corner point of the offshore container should be more than 50 mm away from the ground. The initial impact velocity of the offshore container touching the ground shall not be less than 1m/s.
6. After testing, the offshore container shall not show significant permanent deformation or damage. Small repairable open welds and deformations are allowed.
TLS will not proceed to the next production step until the marine container has passed the vertical impact test

1. Offshore containers shall be tested according to the requirements of four-point lifting and two-point lifting respectively.
2. During the lifting test, the lifting angle should be the design angle.
3. The lifting process should be carried out smoothly to avoid obvious inertial load.
4. The deformation measurement of the beam and the integrity inspection of the offshore container should be carried out after keeping the lifting state for 5 minutes.

   
   FOUR-POINT LIFTING

1. When lifting, a uniform load equivalent to 2.5R-T should be placed in the box.
2. During the test, the deformation of the beam should not exceed 1/300 of the beam span. After the test, the container shall not show significant permanent deformation or damage.

   
​    TWO-POINT LIFTING (DIAGONAL LIFTING TEST)

1. Select two lifting lugs at diagonal positions for lifting. When lifting, a uniform load equivalent to 1.5R-T should be placed in the container.
2. If the container is not geometrically symmetrical, the lifting test shall be carried out on the two diagonal corners respectively.
3. After the test, the container shall show no obvious permanent deformation or damage.

 
R - maximum allowable total mass of offshore container and loaded cargo (without spreader)
T - Empty mass of offshore container including attachments (without spreader)
The TLS containers will not promote the next production step until the lifting test is passed.