Bruce Power has a history of feedwater heater operating problems. Steam hammer has been a common problem on the HX5 drain lines in all eight units at Bruce Power in Ontario, Canada, since early in its operating history.

When it comes to plant inspection and maintenance, surprises happen. At no other time in the commercial nuclear power industry’s history has this been truer than since serious material degradation issues were first identified at pressurized water reactor (PWR) plants.