Radiometric instrumentation for plant environmental monitoring at BNFL Sellafield

BNFL has detailed experience and knowledge in the application of installed radiometric instrumentation, primarily at Sellafield. The range of applications is extensive and comprises: (i) process monitoring; (ii) waste characterisation; (iii) fissile material accountancy; (iv) environmental discharge monitoring; (v) workplace monitoring. The scale of the systems ranges from single stand alone instruments to large building surveillance and evacuation systems incorporating many airborne contamination monitors. Over 600 alpha-in-air monitors, 1000beta-in-air monitors and 500gamma monitors have been installed in 30 new plants at Sellafield since 1975