A view inside the boiler of Lady Nan looking towards the firebox.  The long metal bars are the longitudinal stays that reach the full length of the boiler from the backhead to the front tubeplate.  This prevents damage (from pressure) to what would otherwise be unsupported areas of flat plate.
A view inside the boiler of Lady Nan looking towards the firebox. The long metal bars are the longitudinal stays that reach the full length of the boiler from the backhead to the front tubeplate. This prevents damage (from pressure) to what would otherwise be unsupported areas of flat plate.
Credit: Dick Bellchambers, 2005-03-30