NEBOSH Practice Test

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Which of the following is NOT a type of failure mode that can lead to loss of containment from a storage tank?

Overfilling
Corrosion
Temperature control failure
Bund failure

The correct answer is: Temperature control failure

The option that is considered not a type of failure mode leading to loss of containment from a storage tank is related to the failure of temperature control. While temperature control is vital for maintaining the integrity of stored materials and preventing conditions that could lead to failures, it is not classified as a direct failure mode itself. Overfilling refers to the excess liquid exceeding the designed capacity of the storage tank, potentially leading to spillage and loss of containment. Corrosion, on the other hand, is a deterioration process that compromises the structural integrity of the tank over time, potentially resulting in leaks. Bund failure relates to the containment area that surrounds storage tanks, and if it fails, it can no longer effectively contain any spillage or leaks. Therefore, while temperature control is important for safe operations, it does not directly constitute a failure mode that can lead to loss of containment in the same way that the other options do.