This article is from the source 'bbc' and was first published or seen on . It will not be checked again for changes.

You can find the current article at its original source at http://news.bbc.co.uk/go/rss/-/1/hi/world/americas/7216993.stm

The article has changed 3 times. There is an RSS feed of changes available.

Version 0 Version 1
Canada isotope plant 'was unsafe' Canada isotope plant 'was unsafe'
(about 3 hours later)
Canada ordered a nuclear reactor to be re-opened even though the risk was far greater than international standards permit, a committee has heard.Canada ordered a nuclear reactor to be re-opened even though the risk was far greater than international standards permit, a committee has heard.
Linda Keen told a House of Commons committee that she was acting according to the law when she refused to approve restarting the reactor last year.Linda Keen told a House of Commons committee that she was acting according to the law when she refused to approve restarting the reactor last year.
She was later sacked as head of the country's nuclear watchdog.She was later sacked as head of the country's nuclear watchdog.
The plant produces two-thirds of the world's medical isotopes, and the shutdown created a worldwide shortage.The plant produces two-thirds of the world's medical isotopes, and the shutdown created a worldwide shortage.
Ms Keen refused to re-open the Chalk River plant after it was shut for routine maintenance in November last year, because some safety back-up systems were not working.Ms Keen refused to re-open the Chalk River plant after it was shut for routine maintenance in November last year, because some safety back-up systems were not working.
Prime Minister Stephen Harper said in December that there was no risk of a meltdown, and his Conservative government pushed emergency legislation through parliament to get it working again.Prime Minister Stephen Harper said in December that there was no risk of a meltdown, and his Conservative government pushed emergency legislation through parliament to get it working again.
'Conduct standards''Conduct standards'
Speaking on Tuesday, Ms Keen said the chance of a failure was only one in 1,000, while the permitted international standard is one in a million. Speaking on Tuesday, Ms Keen said the chance of a failure was one in 1,000, while the permitted international standard is one in a million.
"Ignoring safety requirements is simply not an option," she told the House of Commons committee that is reviewing the circumstances surrounding the shutdown."Ignoring safety requirements is simply not an option," she told the House of Commons committee that is reviewing the circumstances surrounding the shutdown.
Also on Tuesday, Auditor General Sheila Fraser told the committee that the government's decision to fire Ms Keen raised concerns about the independence of regulatory bodies.Also on Tuesday, Auditor General Sheila Fraser told the committee that the government's decision to fire Ms Keen raised concerns about the independence of regulatory bodies.
Earlier this month, Natural Resources Minister Gary Lunn said the way Ms Keen had handled the closure did not meet "the very high standard of conduct the government and Canadians expect from public officeholders".Earlier this month, Natural Resources Minister Gary Lunn said the way Ms Keen had handled the closure did not meet "the very high standard of conduct the government and Canadians expect from public officeholders".
The isotopes produced at the plant are used for medical imaging and diagnostic scans for fractures, cancer and heart conditions.The isotopes produced at the plant are used for medical imaging and diagnostic scans for fractures, cancer and heart conditions.
When injected into the body they give off radiation that can be seen by a camera.When injected into the body they give off radiation that can be seen by a camera.