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Posted by eng on April 03, 2010 at 14:52:40:
In Reply to: Re: Turbine with 5"external diameter steam supply pipe posted by Tom Stanton on April 02, 2010 at 20:04:21:
: The diameter has nothing to do with the actual horsepower of the turbine. It is used to determine what class enginner has to be IN CHARGE. If the external pipe size is 1.75 up to 3.5 inches a third class engineer can be in charge, if greater than 3.5 and not over 5 inches a second engineer can be in charge and if over 5 inches a first class engineer must be in charge.
So, the practical outcome of this is that the owner of the turbine is being given a pass by not having to hire a first class engineer to be in charge. Because the second class engineer is limited to 150 horsepower, the legislature is giving the owner-user a break?