Deck : Deck General - 796/5076
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| What is NOT required of the cargo tank venting on a tank barge carrying grade A liquids? |
| A) Each cargo tank must have a vent. |
| B) A vent header must be fitted with a pressure-vacuum valve. |
| C) The diameter of the vent must be greater than 4 inches in diameter. |
| D) The vent must extend to a reasonable height above the weather deck. |
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