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I was just looking for some general values that others purge hydrogen from their generator. IE flow rate that CO2 is introduced to the generator? If the unit still on turning gear? What is the casing pressure during purge? during regular operation? Time required to purge generator and casing volume?
The reason I ask is we recently did a purge going into an outage and when the generator casing was opened hydrogen was found. The point of the generator that was open was on the bottom as well where I would assume the lowest concentration would be found, however we had >25% hydrogen. We suspect this is due high CO2 flowrate? Any insight?
The reason I ask is we recently did a purge going into an outage and when the generator casing was opened hydrogen was found. The point of the generator that was open was on the bottom as well where I would assume the lowest concentration would be found, however we had >25% hydrogen. We suspect this is due high CO2 flowrate? Any insight?