Community QuestionSeen on 12 CBTs

When is it necessary to ground the trailer?

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Answer

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

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.

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

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