June’s work weekend resulted in progress on the fitting of the second course of the Montreal. We had a very nice turnout of workers including Mike Wahl, Kelly Bauman, Bob Jackson, Steve Seibel, Doug Klitzke, Darryl Gasser, and Bruce Case. The second course is the tapered course which is especially difficult to fit. Finished to a point where Becker Boiler needs to fabricate an attachment to allow finish fitting of the patch.
Holes were cleaned up for many of the new studs by tapping the sheets with special boiler taps (tappered). It is necessary to ‘clean’ the holes so that a completely sealed ‘joint’ will be made between the stud and sheet. Obviously, leaks will not be tolerated.
Driving box binder fitting was initiated on the frame. This is necessary to determine the repairs and alterations required to renew the shoes and wedges.
Ultra sounding of more of the boiler sheets was also accomplished. Becker Boiler has started welding up the ‘old’ stay bolt holes so that they can be redrilled, reamed and tapped to return the stay bolts to the original 7/8″ diameter size. When a stay bolt breaks, it can be renewed by replacing it with a new bolt a little larger in size (usually 1/16″ larger in diameter). As time goes on, the bolts can wind up much larger than the original size which can result in more frequent breakage. Returning the bolts to the orginal design size will allow future repairs without jeopardizing the original design specifications.
It may seem as though the progress is slow at this time….fitting of the boiler patches are extremely delicate and MUST be done correctly the first time! Various inspections are also requirred through out the boiler patching process which can result in longer lead times.
Plans are being made to manufacture new tube sheets to complete the boiler repairs.