The turbine runner was not properly rebalanced after these repairs.

This also allows for the use of a smaller turbine runner, which can decrease costs and mechanical losses.

Water was directed tangentially through the turbine runner causing it to spin.

A gradually flaring passage located downstream of the turbine runner.

In conjunction with this work, the turbine runner was also replaced with a more efficient and powerful design.

Old turbine runners may have a significant amount of stainless steel added this way by the end of their lifetime.

The turbine runner was repaired in 2010 by welding the old blade back in place.

A turbine runner is on permanent display at the Manitoba Electrical Museum.

Flowing water is directed on to the blades of a turbine runner, creating a force on the blades.

The resulting impulse spins the turbine runner, imparting energy to the turbine shaft.

The A-9 unit was noted for being the first at Hoover Dam to have a solid stainless steel turbine runner.

When the wicket gates are opened wider, more water will flow into the turbine runner which results in higher speeds of the turbine rotation.

A top down view of the vanes (green lines) that funnel water from the outer spiral tunnel to turn the central turbine runner (large yellow circle).

Flow through the turbine is controlled either by a large valve or by wicket gates arranged around the outside of the turbine runner.

Movable vanes around the periphery of a turbine which regulates the flow of water from the scroll case to the turbine runner.

Fixed metal vanes fitted to the inner periphery of the scroll case that guide the water from the scroll case to the turbine runner.

The project included physical model testing, new turbine runners, a major turbine overhaul, a generator rewind, and disassembly and reassembly of the units.

Caption: Robert Moses Power Dam - A cone is attached to the Unit 17 turbine runner assembly before lowering into the unit.

Improving the performance of turbine runners and extending their service life while performing, on site and as quickly as possible, welding, cutting, gouging, grinding and metrology work.

Large turbine runners are typically delivered in two pieces by rail, requiring additional site installation time to weld the two halves together, heat treat the metal and balance the completed runner.

From 2003 to 2005, state-of-the-art turbine runners were installed in the turbine-generator units at the Cougar powerhouse, and were designed to resist cavitation and operate efficiently at very large head ranges.

From 1950 to 1954, he served as the Director of Power at Hoover Dam, overseeing the installation of three new generating units, including the first to have a solid stainless steel turbine runner.

McKeil Marine McKeil Marine advises that its tugs and barges are capable of carrying the hydro turbine runner between Montréal and Portland, Oregon.

McKeil Marine states that the ship has sufficient deck space to perform the activity described in the application and that the company is experienced in carrying large equipment, comparable to the hydro turbine runner.

The applicant submits that the vessel used must be equipped with its own heavy lifting device to reduce the amount of manipulation and the risk of damage to the hydro turbine runner during the Montréal-Portland, Oregon trip.