Page last updated at 15:13 GMT, Wednesday, 18 February 2009

'Worm' probes radioactive pipes

Pipe crawler
The pipe crawler has beamed back images from inside the pipeline

A device described by its operators as a hi-tech worm has been used to probe the condition of a pipeline once used to discharge radioactive effluent.

The 100,000 pipe crawler has beamed back images from inside the system at the Dounreay plant in Caithness.

The underground pipeline to the sea was in use from 1957 to 1992.

Dounreay Site Restoration Limited (DSRL) said the worm spent five days in the system, sending back video images and radioactivity readings.

The experimental nuclear power complex on the Caithness coast is being decommissioned.

Martin Howse, project manager with DSRL, said: "The tunnel system has been flooded for more than half a century and the pipeline itself was taken out of routine use in 1992, so we don't know what condition the pipeline is in or if it safe to leave in place."

He added: "We are looking for signs of structural degradation, trapped debris and radioactive contamination."

Radioactive particles have been found on beaches near Dounreay in recent years.

The metallic fragments of reprocessed reactor fuel are linked to a historic discharge from the plant into the sea.

Print Sponsor

Wull-E: Robots doing dirty work
30 Jul 08 |  Highlands and Islands
Divers probe nuclear waste system
16 Apr 08 |  Highlands and Islands
Grand scale of a nuclear clean-up
11 Apr 08 |  Highlands and Islands

The BBC is not responsible for the content of external internet sites

Has China's housing bubble burst?
How the world's oldest clove tree defied an empire
Why Royal Ballet principal Sergei Polunin quit


Sign in

BBC navigation

Copyright © 2020 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.

Americas Africa Europe Middle East South Asia Asia Pacific