What method is primarily used to locate damage in tanks or voids?

The primary method used to locate damage in tanks or voids is through the use of a sounding tape and liquid load list. This technique involves physically measuring the depth of liquid in tanks or void spaces using a sounding tape, which helps determine whether there are inconsistencies or unexpected levels that might indicate damage or leaks. The liquid load list provides a reference point for what should be in the tank, allowing for discrepancies to be identified.

Using a sounding tape is particularly effective because it allows for direct interaction with the tank's contents, giving a quick and reliable assessment of the tank's integrity. The combination of measurements from the sounding tape and the details from the liquid load list enables inspectors to make informed judgments about the condition of the tanks.