Engine_2014 : Steam Plants - 664/1951
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| Scavenging air is supplied to steam soot blower elements to __________. |
| A) provide cooling air when soot blower elements are rotating through blowing arcs |
| B) prevent buildup of soot on the element |
| C) prevent overheating of adjacent tubing |
| D) prevent the backup of combustion gases into soot blower heads |
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