Deck : Safety - 608/2841
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| The atmosphere in a tank is too lean if it is __________. |
| A) capable of supporting combustion because the hydrocarbon content is above the UFL (Upper Flammable Limit) |
| B) capable of supporting a fire once started |
| C) incapable of supporting combustion because the hydrocarbon content is below the LFL (Lower Flammable Limit) |
| D) not safe for ballasting |
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