Community QuestionSeen on 12 CBTs

When is it necessary to ground the trailer?

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Answer

a. Only when filling a trailer with explosives. b. When filling or unloading any flammable liquid tank. Ground must be maintained until filling hole is properly closed. c. Only when unloading a cargo tank filled with any flammable liquid. d. None of the above. B

Alternate answers seen on other CBTs

The same question shows up worded slightly differently across CBT versions. Here are the other answer variants we've indexed.

When filling or unloading any flammable liquid tank. Ground must be maintained until filling hole is properly closed.

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