Newsletter March 2020

Have you heard of HD-Spec?

Be prepared for worst-case scenarios – with the SARA high dose rate spectrometer

Reactor operators like to quip that their job is 99% boredom and 1% panic. Although modern nuclear power plants are regarded as some of the safest methods of generating electricity, current technology is unfortunately not yet able to rule out beyond design basis accidents completely. Following this type of incident, dose rates can easily exceed several mSv/h – as was the case in both Chernobyl and Fukushima Daiichi.

Typical spectroscopic monitoring systems are no longer able to process count rates of this magnitude. By contrast, single-purpose gamma dose rate probes such as MIRA or SARA's integrated Geiger-Mueller counter can handle these activities effortlessly. However, the valuable spectroscopic information is lost: for releases in the vicinity of power plants, the nuclide vector contains information on the sequence of events during the accident; with mixed nuclides it forms the basis for evaluating the biological impact.


Dose rates in the vicinity of the Chernobyl nuclear power plant, one month after the accident, with hypothetical placements of SARA with HD-Spec in a typical ring monitoring network; Original picture: Uriy Dzubenko,, CC-BY-SA 4.0

The patented SARA high dose rate spectrometer option, "HD-Spec" (pat. no. 10 2016 117 356), recovers this data, thereby filling in the gaps in the radiological situation assessment. Its special CeBr3 detector enables HD-Spec to record spectroscopic measurements of up to 100 mSv/h. Moreover, from summer 2020, HD-Spec can also be combined with a Geiger-Mueller counter, profiting from SARA's extended dose rate detection range up to 10 Sv/h.

Fitted with HD-Spec, SARA is an unparalleled solution for ring monitoring networks and nationwide surveillance. Authorities such as Lithuania's Environmental Protection Agency EPA are already committed to turning this to good advantage. If you too want to be optimally prepared for radiological events, our ENVINET experts will be happy to advise you under This email address is being protected from spambots. You need JavaScript enabled to view it. or by calling +49 (89) 45 66 57-0. We look forward to hearing from you.

ENVINET – Leading in Environmental Radiation Detection

Best regards

We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.