More issues at Bruce power station raise concerns about aging nuclear infrastructure. Unexpectedly high levels of hydrogen in pressure tubes at a nuclear power plant in Ontario have renewed questions about how long Canada’s aging CANDU reactors can continue to operate safely. At a meeting before the Canadian Nuclear Safety Commission (CNSC) on Friday, officials confirmed more pressure tubes at the Bruce Nuclear Generating Station on the eastern shore of Lake Huron were found to contain hydrogen concentrations in excess of regulatory limits, and above what the industry expected. Bruce Power disclosed in July that it had discovered two tubes that exceeded regulatory limits. The cause has not been determined, nor is it clear how many other pressure tubes in Canadian reactors might also be affected. Bruce Power did not answer questions from The Globe late Friday on how many additional tubes were found to violate the station’s licensing requirements.
Globe and Mail 3rd Sept 2021 read more »