What's new in cavitation repair

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Hydro Review; (United States)

OSTI ID:5296363

Fulton, E

Repairing pits and cracks on a hydroturbine runner in place is, perhaps, the most difficult maintenance task at many plants. Over the years, hydro operations and maintenance staff have created new techniques and tools for making the job easier. Responses to an informal survey of O M staff at a sampling of North American hydro plants suggests that the move to all stainless steel runners and the virtually universal use of stainless steel welding alloys in repairs has had a significant positive effect. Specifically, the interval between repairs has widened dramatically, often giving crews the opportunity to repair cavitation damage during routine maintenance of the entire turbine rather than being forced to shut down the unit for emergency work only on the runner.

• OSTI ID: 5296363
• Journal Information: Hydro Review; (United States), Journal Name: Hydro Review; (United States) Vol. 7:6; ISSN HYREE8; ISSN 0884-0385
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130700* -- Hydro Energy-- Power-Conversion Systems
ALLOYS
CAVITATION
EQUIPMENT
FABRICATION
HIGH ALLOY STEELS
HYDRAULIC TURBINES
HYDROELECTRIC POWER PLANTS
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MACHINERY
POWER PLANTS
REPAIR
STAINLESS STEELS
STEELS
TURBINES
TURBOMACHINERY
WELDING