Heisler Hydro...

As the Sumpter Valley Railroad is under the regulations of the Federal Railroad Administration (FRA) each year the locomotives must undergo a full hydrostatic test and inspection before entering service.

Heisler number 3 has been reassembled and is being warmed up for her annual hydro test and inspection tomorrow. The water in the boiler is heated to between 70 and 100 degrees for a hydro test to relieve stress on the boiler and tubes.

Our CMO Scott Hutton (left) and Road Foreman of Engines Steve Christy (right) are carrying out the hydro test on Heisler number 3. Also assisting but not pictured are Eric Wunz and Taylor Rush. The 97-year old locomotive was pressure tested to 231.25 psi, or 125% of her permitted operating pressure of 185 psi. However though she is certified to a higher pressure, we only run her at 150 psi. It was a good test, no problems to report, number 3 is ready for the summer!