Essential Tests Before Container Delivery

When it comes to the manufacturing of containers, ensuring quality and reliability is paramount. Before our containers are ready for delivery to customers, a series of rigorous tests are conducted to guarantee their integrity and safety. In this article, we’ll delve into the key tests that are performed to ensure the containers meet international safety standards and can withstand the harshest conditions.

Welding Inspection:

Welding inspection is a fundamental step in the manufacturing process of containers. It goes beyond merely examining the final product; it is an ongoing process that ensures the quality of welds throughout the container’s construction. This inspection includes Non-Destructive Testing (NDT) to identify any potential weaknesses. By adhering to stringent welding standards and conducting continuous inspections, structural issues are prevented.

Lifting Test:

In addition to meeting the requirements outlined by international container safety conventions, we also carry out specialized lifting tests for offshore containers according to the DNV2.7-1. This includes the two tests:

• Four-Point Lifting Test: In this test, the focus is on assessing the container’s load-bearing capacity. The objective is to confirm that the container can be safely lifted without undergoing permanent deformation. This is tested by loading the container up to a total gross mass of 2.5 × R, where R is the maximum allowable combined mass of the container and its cargo. The container should be lifted with a lifting sling set attached to each of its four pad eyes with an angle to the vertical equal to the design angle. After the lifting, the container shall show no significant permanent deformations or other damages.
• Two-Point Lifting Test: This test assesses the container’s ability to resist deformation while being suspended from only two points. This is done using two lifting lugs positioned diagonally opposite each other, with a total mass of 1.5 × R. If the container is unsymmetrical, two diagonal lifting tests will be required. Like the four-point lifting, the container shall show no permanent deformation or signs of damage after the test.

Drop Test:

Moreover, a drop test is performed to assess how an offshore container handles free fall. Thus, this test comprises that the offshore container shall be suspended from a quick-release hook. When released, the offshore container shall drop freely for at least 5 cm, to give it a speed at an initial impact of at least 1 m/s. After testing, the offshore container shall not show significant permanent deformation or damage. The drop test is crucial in guaranteeing that containers arrive at their destination in perfect condition, regardless of the handling they experience during transit.

Water-tightness Test:

Ensuring that containers remain watertight is essential. That is why containers undergo a high-pressure water test, spraying them from all angles. Afterward, thorough checks are conducted to verify that no water has penetrated the container. This test is a vital part of safeguarding the contents from damage due to exposure to moisture during transport and storage.

Quality assurance

In conclusion, these rigorous tests are the foundation of container quality control. By conducting these tests, potential structural issues can be identified in advance, thereby minimizing the risk of accidents occurring during operation. This not only protects the safety of personnel but also diminishes potential property damage!

At Uniteam, our dedication lies in delivering top-notch container solutions. We conscientiously control each stage to guarantee that our products adhere to the highest standards, and your specific needs and technical requirements. Are you curious to know more? Get in touch with us today!

Sources: DNV Standard for Certification.