When securing a main propulsion turbine equipped with carbon packing glands, the vacuum should always be broken before securing the gland seal steam because __________.

Question

Accepted Answer

cold air rapidly entering the gland may result in damage to the carbon segments and sealing surfaces

Answer

loop seal will flood the aftercondenser

Answer

gland seal leakoff lines will flood with water

Answer

the turbine rotor expands faster than the gland casing

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