Tender Transition

Why the Tender Can't be Salvaged

After many years of use, the bottom of the tender cistern has corroded through.

Man using gas torch to weld metal frame

Our restoration staff have built a platform for the cistern construction.

Pre-drilled Holes in Tender Steel

Some of the holes in the steel for the cistern have been pre-drilled.

This week the restoration crew has been busy setting up to begin work on the tender for the Sierra No. 3.

We are conforming with the Secretary of Interior’s Standards for the Treatment of Historic Properties, which call for retaining as much of the original fabric as possible. Because of the poor condition of the original tender, the decision was made to replace the entire wooden tender frame and steel cistern, while retaining the trucks, cistern top, and oil bunker. 

A working platform has been constructed in the Tri Dam shop on which to assemble the cistern.  The formed steel sheets for the tender were delivered last month, and are now ready to assemble. We are awaiting delivery of the rivets to begin the hot riveting.  Our machinist, Bob West, has fabricated custom rivet snaps, and the forge is standing by.  Some of the holes have been pre-drilled in the steel, but the remainder will be drilled here using a magnetic base drill. 

This is an interesting point in the project, as we transitioning from refurbishing original equipment, to the creation of what is essentially a new replica, using old technology.