Autogenous 1200-inch Mill Trunnion Repair

— Oct 06, 2010 Supplied information continued: Over time the ground product eroded a section of trunnion from the back side resulting in stress fatigue cracks. Read Full Case Study

— Sep 20, 2010 Out at sea, the crew of this Russian container ship noticed a sudden loss of power. Upon inspection below, they discovered the engine had thrown a conrod causing severe damage to the engine block. Read Full Case Study

Engine Crack Repair

— Sep 20, 2010 Freeze damage caused cracks in this shipboard engine. Read Full Case Study

Broken Gear Box 1 Repair

— Sep 20, 2010 As this crane was in use, its free hook caught on a stationary piece of equipment, resulting in considerable damage to the gear box. Read Full Case Study

Broken Gear Box 2 Repair

— Sep 20, 2010 Operation on this conveyor system was humming along when suddenly the chain climbed the sprocket on this Hanson gear box. The shaft tore loose and proceeded to selfdestruct. Plant operation was brought to a dead… Read Full Case Study

Blade Hub Repair

Ore Carrier Suffering from Ice Damage Ready to Headout in Just Days

The Problem

With hub removed from the ship's propeller shaft, close-up view displays areas of the cracks in the hub.

The Fix

Crew stitches up over 150" of crack on the hub.

The Results

Hub being installed onto the tail shaft. Estimates in replacing the heat-fitted hub ran to approximately $250,000 and nearly six months of lead time Five days of stitching at 10% of the estimated replacement cost brought the hub back into service. This type of repair for hub securing these enormous seven foot blades had never been attempted before. As proof of the strength of the repair, the ship set out on Lake Superior later in early spring. This time the ice sheared off the propeller blades. After ballasting the tanks, an inspection revealed the hub was as good as new. New blades were replaced.