Dutch bracing for the worst when top two isotope reactors are shut down

OTTAWA — The Netherlands is bracing for the worst if the world is without its two top sources of medical isotopes next year, a scenario that became more likely last week after Canada’s nuclear agency said it will take longer than planned to repair a leaky reactor at Chalk River, Ont.

OTTAWA — The Netherlands is bracing for the worst if the world is without its two top sources of medical isotopes next year, a scenario that became more likely last week after Canada’s nuclear agency said it will take longer than planned to repair a leaky reactor at Chalk River, Ont.

An aging Dutch nuclear reactor in community of Petten is scheduled for lengthy maintenance work next spring, which is the earliest its downed Canadian counterpart is expected back up and running.

The two reactors built a half-century ago supply the bulk of the isotopes used to diagnose cancer and heart ailments.

But Atomic Energy of Canada Ltd.’s repeated delays in returning Chalk River to service have cast doubts about whether the 52-year-old reactor will ever work again.

That has the Dutch worried that an already shaky isotope supply is about to get a whole lot shakier.

“We here in the Netherlands are forming a task force this month to prepare for the worst scenario in 2010,” Dr. J. Fred Verzijlbergen, the head of the Dutch Society of Nuclear Medicine, said in an email.

“People from the industry … government, nuclear medicine and radiotherapy have to co-operate and study every possibility to keep the medical radioisotope production intact.”

“Shutdown of Chalk River and Petten for a long period will have huge consequences, this time also for patients with cancer diagnostics and treatments.”

The Dutch reactor’s operator, NRG, has a licence to run the reactor until March 2010, at which point it must be shut down for major repairs.

It’s expected to take six months to repair the Dutch reactor.

The past month — during which the Dutch and Chalk River reactors have been off-line — has been a preview of what may be in store next spring.

And medical products maker Covidien Ltd. — which refines and sells raw isotopes to pharmaceutical companies and clinics — told its customers to expect shortages in July and August.

“Chalk River and Petten are closed at the same time presently and we’ve been able to muddle through,” said Dr. Christopher O’Brien, head of the Ontario Association of Nuclear Medicine.

He added that’s only because a smaller Belgian reactor that normally produces isotopes for only a third of the year has dutifully been filling in for its larger counterparts.

But the Belgian reactor is primarily a research reactor and isn’t usually used to make isotopes for months on end. It produces 10 per cent of global supply.

So it’s uncertain if the Belgian reactor can stand in for any length of time.

There won’t be many backups if it can’t. France’s small OSIRIS reactor is also scheduled for repair work next year.

The only other reactor up and running besides the one in Belgium is in South Africa.

It was hoped that a brand new reactor in Australia would help stem the isotope shortage, but the Australian Nuclear Science and Technology Organization says it’s still months from supplying other countries.

Aglukkaq, who will speak to doctors Monday at the Canadian Medical Association’s annual meeting in Saskatoon, says Health Canada will continue to look at alternatives to radioactive isotopes. But she acknowledges that countries around the world, including the Netherlands, are worried.

“I’ve had discussions with officials from Belgium to try and co-ordinate shut downs of the reactors within the global community to mitigate as much as possible the shortage,” said Aglukkaq.

“We are all very concerned about the shortage within the international community, but the fact of the matter is these reactors need to be shut down for their regular maintenance otherwise it’s not safe any more.”

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