Engine : Steam Plants - 446/811 |
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A water-tube boiler can be laid up either wet or dry. If it is to be laid up wet, you should __________. |
A) drain and refill the boiler when the pH goes above 6 |
B) drain and refill the boiler each week |
C) completely fill the boiler with deaerated feed water and maintain a slight pressure |
D) completely fill the boiler with water, then blow down to steaming level |
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