“…On the other hand, SPND and FC That is why Ignalina NPP (RBMK-1500) used SPND with GC emitters as radial and axial detectors, which substantially changed the approach to ICIS development [15]. At foreign NPPs, SPND with low-burnup emitters fabricated of Pt, Er, Co, Yo, Ta, and Cd found a wide application in ICIS [16][17][18][19]. Besides the neutron method, a considerable amount of application was given to the gamma method, where primary transducer GT was used [21].…”