Riveted Steam Drum Head
Pictured above is one head of a the steam drum from Boiler #2.
Each end of the Steam Drum is closed with a dished head. This was the last boiler that was made using riveted construction. The next drums used welded seams.
The man-way door provided access to the inside of the drum. This was useful during construction, for rolling in tubes, and during maintenance, cleaning and repairs.
Manufacturer: Babcock-Wilcox and Goldie McCulloch
Joint type: Double Riveted Double Butt Strap
Designation: Middle Steam Drum Head
Working pressure: 425 psi
Plate thickness: 1 13/16" (4.6 cm)
Tensile strength: 55,000 lb/sq. in.
Outside diameter: 48 inches (122 cm)
Rivet Diameter: 1 1/2" (3.8 cm)
Rivet Pitch: 4" (10 cm)
Manway opening: 12" x 16" (30 cm x by 40 cm)
The Steam Drum was located at the top of the boiler, about 40 feet off the floor. Pictured above is a steam drum from the first of seven Sterling boilers installed at the Rossdale Power Plant. These boilers operated at 400 psi.