Engine : Engineering Safety - 334/968
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| In order to prevent the unnecessary release of hydrocarbons to atmosphere, when taking on departure ballast, one method used is to _________. |
| A) allow entering ballast to displace the inert gas to a tank where cargo is currently being discharged |
| B) manually open the pressure/vacuum device |
| C) use blowers to purge the inert gas from tanks |
| D) completely open the mast riser valve |
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