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Engine_2014 : Motor Plants and Auxiliary Boilers - 2609/2614
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You are preparing to undertake the repiping of a water column for an auxiliary fire-tube boiler exceeding a 15 psig operating pressure and is piped similarly to the arrangement shown in the illustration. According to Coast Guard Regulations (46 CFR, Part 52), which of the following statements is true?
A) It is permissible to locate water column piping in the uptake, smoke box, or boiler casing.
B) The minimum size of the piping connecting the water column to the boiler is to be 1.5 inches (3.8 cm).
C) The various fittings used must be of cast iron construction.
D) The shut off valves on the boiler must be locked, or sealed open.
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Illustration MO-0093

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