Summary
The Geological Survey of Norway has developed a system for mobile gamma ray
spectrometer surveying suitable for use in nuclear emergencies where
potentially dangerous radioactive materials have been released into the
environment. The measuring system has been designed for use with different
kinds of transportation platform. These include fixed-wing aircraft,
helicopters and vans. The choice of transportation platform depends on the
nature of the nuclear emergency. Widespread fallout from a distant source can
be mapped quickly from the air while local sources of radiation can be deline-
ated by a car-borne system.
The measuring system processes gamma ray spectra in real-time. The operator of
the system is therefore able to guide surveying in accordance with meaningsful
data values and immediately report these values to decision-making authorities.
The operator is presented with a number of different displays suited to
different kinds of nuclear emergencies that lead to more efficient surveying.
Real-time processing of data means that the results of a survey can be
delivered to decision-makers immediately upon return to base. It is also
possible to deliver data via alive mobile telephone link while surveying is
underway.
