Engine : Steam Plants - 53/811
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| A slight vacuum is maintained in the shell of the first stage heater shown in the illustration. The primary reason for the vacuum is to __________. SG-0025 |
| A) force the use of the main condenser as the drain cooler |
| B) provide a low pressure area to guarantee feed water flow to the heater |
| C) maintain a positive flow of steam as supplied by the main engine LP bleed system |
| D) avoid the necessity of having to use the condensate pumps |
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Illustration SG-0025
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