Autumn 2014

James Fisher Nuclear cleans up at Sellafield

Trials of a new technique for clearing sludge from nuclear ponds using remotely operated vehicles proves a success.

Last month, 35 staff from Sellafield attended a demonstration of sludge retrieval and transfer by James Fisher Nuclear (JFN) at Barrow-in-Furness dock facility. The demonstration was part of a trial commissioned by Sellafield Limited’s Pile Fuel Storage Pond, whose operatives need to transfer radioactive sludge from the plant’s pond decanner bays to its main pond.

Decanners are machines used to remove stainless steel and other metal cans that contain the nuclear reactor’s enriched uranium fuel rods. They do this by shearing the tubing into a spiral strip without creating any chips. Once the fuel element has been decanned, it is moved on to fuel reprocessing. 

With the aid of a barge crane, the team from JFN lowered a tethered slurry pump, two submersible remotely operated vehicles (ROVs), a skip and dumpy bags filled with simulated sludge onto the dock bed. Then one ROV moved the slurry pump into position, while the other attached a discharge hose from the pump to the skip. It then supported the inlet hose while sludge was pumped into a filter bag lining the skip. As the bag was pulled from the dock water drained out, leaving just sludge behind.

Clearing sludge from nuclear ponds is one of the greatest decommissioning challenges facing Sellafield. Through their trials, JFN showed that radioactive sludge can be successfully and safely removed in large quantities using pumps, submersible ROVs and filter bags without any need for long-reach tooling.

Simon Pyne, JFN business development manager, says:

“Everyone seems impressed by the innovation and many see applications for the new methodology in their pond projects. The new technique will accelerate decommissioning and reduce costs.”

Further information

Find out more information about JFN's activity at Sellafield here:

Search Pelican





DOWNLOAD LATEST EDITION

ARCHIVE

REGISTER

Other articles within Autumn 2014

Islands in the stream

James Fisher Marine Services wins contract with MeyGen, the first commercial tidal st...

Highland power

New monitoring systems increase longevity of hydroelectric power plant.

Young talent shines bright

This month marks the end of the first year of apprenticeship for Ryan Peacey, 17, Ben...

Lifting Weak Link Bails to the next level

ScanTech AS’s highly innovative and simple Weak Link Bail (WLB) system has been suc...

In-depth understanding (for subsea baskets)

Fisher Offshore (FO) has created its own subsea basket for transporting equipment fro...

Eastern promise

Fisher Offshore (FO) opens a new base to support subsea construction and maintenance ...

Repeat business for Subsea Vision

Subsea Vision has started a new project on the Haewene Brim, a Floating Production St...

Digging deep

James Fisher and Sons plc (JFS) and KDM Marine have joined forces to create James Fis...

Piling it on at ‘The Pearl’

Strainstall creates new testing process for higher-than-ever test loads in Qatar.

Production prowess

Workers at Strainstall’s Isle of Wight facility in Bembridge have made a colossal 1...

Mimic™ goes mobile

James Fisher Mimic upgrades its condition monitoring software for the ongoing digital...

Forging stronger links

RMSpumptools re-designs its subsea wet-mate connectors and wins more contracts.

Coming through loud and clear

HeliCom™ Matrix to be used at one of world’s largest defence hyperbaric training ...

Diving into the 21st Century

Divex wins multi-million pound contract to build state-of-the-art saturation diving s...

Osiris enters 12th year of service for Arish Mell

The team at Osiris Marine Services have been selected to continue maintenance work on...

James Fisher Nuclear cleans up at Sellafield

Trials of a new technique for clearing sludge from nuclear ponds using remotely opera...

Under the surface with: Ian Moore

Introducing Ian Moore, 47, business development manager at James Fisher Nuclear’s N...

Deeper into the safety zone

Quick reactions allow ScanTech Offshore to deliver newly certified air compressors.

Life savers

Thrills but no spills on a RAF Search and Rescue helicopter training exercise.

Corvettes set sail for Indonesia

A six month contract extends to a seven year partnership for the Corvette warships o...

BACK TO TOP