RadLine™ is a small, novel, remotely operated radiation detector which uses a scintillating crystal and fibre optic cable to obtain radiation measurements from difficult to access or large process areas over a wide radiation range.

Benefits of RadLine technology

  • Deployable as a single detector, a chain, or as an array giving the ability to monitor large process areas
  • Tolerant of a high level of radiation, has a wide radiation detection range (0.01 to 8580 Sv hr-1)
  • No electronic components can be used underwater
  • Small dimensions and flexibility of the device enables it to be deployed into small, difficult to access areas (such as pipe work)
  • Wide range of applications in operational plant as well as ad hoc and specialised projects

What is RadLine used for?

Evolving decommissioning challenges in the worldwide nuclear industry require the development of innovative new technologies to enable the characterisation of radiation hazards in a wide variety of scenarios.

The device is a real-time, remotely deployed, radiation detection device initially developed to operate in elevated levels of radiation (i.e. thousands of Sieverts per hour), but with an ability to also operate at low radiation levels.

The technology offers customers improved information about their process operations through cost effective, responsive radiation level mapping with reduced radiation exposure to the operator. RadLine's resistance to radiation enables it to be used in highly active waste processing and storage facilities. In addition, RadLine is suited to low level radiation environments and underwater applications.

How it works

RadLine consists of a small (3cm long) scintillating crystal coupled to a metal-coated fibre-optic cable. Scintillation light produced by the crystal in a radiation field is transmitted long distances down the fibre-optic cable to a photon detection device. Data is then recorded on PC software and used to measure the radiation levels of the environment. RadLine can be used alongside NNL's inspection devices in a single deployment to provide customers with even greater information.

To date, RadLine has been calibrated with low and high level radiation sources at Tracerco Ltd (UK) laboratories and the National Physical Laboratory (UK) respectively. These calibrations have shown RadLine to be sensitive over the radiation range of 0.01 to 8,580 Sv hr-1 with an upper radiation limit estimated at 100,000 Sv hr-1. Current development work is progressing on the low level detection limits of the technology below 0.01 Sv hr-1, underwater applications and proving a directional capability.

RadLine has been developed by the NNL in partnership with Tracerco Ltd (UK).

For more information on the use of RadLine for your application, please contactcustomers@nnl.co.uk