Are you nuts? Retrieval of walnuts saves on storage

Are you nuts?  Retrieval of walnuts saves on storage

A fresh approach to waste management has reduced the amount of intermediate level waste (ILW) being stored Trawsfynydd Site – and it’s all because of walnut shells.

Eight steel sections of the site’s former fuelling machine rings, each weighing between 60-80kg, have been successfully decontaminated, consigned as low level waste (LLW) and stored in a vault. The rings had been originally categorised as ILW.

However, a ‘kernel of an idea’ led to the careful removal and vacuuming of radioactively contaminated walnut shell debris, which was used during the original decommissioning phase in the 1990’s, allowing the rings to be re-categorised as LLW, with the removed walnuts disposed of through an existing waste stream.

Walnut shells are commonly used as a soft abrasive, chosen because they do not damage or scratch surfaces and can remove paint, grease and other debris. This highly successful process means the metal can now be recycled, meaning Magnox don’t have to ‘shell out’ on ILW processing and long-term storage costs at the site – which is operated on behalf of its owner, the UK government’s Nuclear Decommissioning Authority.

Vic Belshaw, Programme Delivery Manager at Trawsfynydd Site, said: “Our initial tests showed the steel was not as radiologically active as first predicted and it was in fact walnut debris inside the rings which was the main source of the higher levels of radiation.

“Removing the debris means we can reduce the amount of waste stored at Trawsfynydd, reducing the long term legacy of the site.”

Source – http://www.magnoxsites.co.uk/news/2012-10-01/are-you-nuts–retrieval-of-walnuts-saves-on-storage

Advertisements

One comment

  1. Pingback: Energy & Nuclear News Article List 3rd Oct – 11th Oct 2012 « Assystem Energy & Nuclear

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s