What surfaces of a tank should be carefully inspected for signs of leakage when shipped with a liquid-filled interstice?

When considering the inspection of a tank shipped with a liquid-filled interstice, it is crucial to focus on both the interior and exterior surfaces. The interior is important because it can reveal signs of leaks directly from the tank contents into the interstitial space, which could pose significant risks of contamination or safety hazards. Meanwhile, the exterior inspection is equally vital, as it allows for the detection of any leakage from the interstice that could potentially escape into the environment.

In the context of tanks, the integrity of both surfaces ensures that the system as a whole functions correctly and safely, preventing leaks that could lead to environmental harm or system failure. Therefore, a thorough inspection of both the interior and exterior is essential to maintaining compliance with safety regulations and protecting public health.