Not to dwell on the subject too much, regardless of the fuel used,
but in the area of _safety_ for boiler operation, unscrew the safety
valve and with an appropriate tool, work the valve off its seat a few
times to be sure it will work at the given steam pressure, especially
if the boiler hasn't been used for a while.  You have a potential bomb
when steaming a boiler!

Steve Bentley
Chief Engineer (marine)
Vancouver, BC