Posted by Melvin Riego on May 10, 2000 at 17:38:20:
In Reply to: Boiler lay-up posted by Doug Yard on March 31, 2000 at 17:40:59:
: What is the best way to store boilers that are fire-tube,4-pass,scottish marine boilers.They are of the 400,600,and 800 horse variety.They are manufactured by Johnson.Wey or Dry?
I think the best way to lay up especially in the winter and requiring very little attention is to drain the boiler and purge with nitrogen. Follow it by pressurizing the boiler to about 5 psig. The nitrogen bottle should have a pressure regulator. It would be left open to the boiler at all times maintaining the pressure. I recommend this highly for long duration layups.
For short duration, simply fill the boiler and add appropriate sulfite yielding a concentration of >5ppm. The boiler must be fully vented through a vent. Test the residual on a weekly basis. By having it filled, it would be ready to fire at a moment notice. Dry layup will require removing lime trays out fo the boiler and boxing it up. Time consumming.
Well, this is what I would recommend.