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Engine : Motor Plants and Auxiliary Boilers - 616/947
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When running a large, dual fuel, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching from heavy fuel oil to diesel oil?
A) The temperature of the fuel from the preheater should be gradually reduced after switching over the three-way valve.
B) The diesel oil must never be allowed to mix with the heavy fuel.
C) The heating steam to the preheater should be increased as soon as the diesel fuel passes through the three-way valve.
D) The heating steam must be secured before the diesel oil passes through the three-way valve.
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