This striking image from ANSTO’s HIFAR reactor highlights the specialized rig flasks used for handling experimental irradiation rigs.
Positioned outside the reactor’s top plate, these flasks were essential for safely loading and unloading experimental assemblies, enabling research into material properties under neutron exposure.
The reactor top plate itself is a feat of engineering, with the central section weighing 9 tonnes and the surrounding ring-shaped plate adding another 11 tonnes. Designed for shielding and structural integrity, this 500mm-thick barrier ensured controlled access to the reactor core while maintaining radiation safety.
With its precision layout and industrial complexity, this photograph is a compelling addition for collectors of scientific heritage and industrial infrastructure photography.