Use of infrared crystal fiber in bearings temperature sensing system inside an NPP containment
О возможности применения инфракрасных кристаллических световодов для передачи сигнала температуры от подшипников внутри гермообъема АЭС

Maksim Kharaim, Viacheslav Kostarev, Natalya Akif'eva, Anastasiya Yuzhakova, Liya Zhukova, Aleksandr Korsakov
2020 Energy Systems  
The flexible fiber made of crystal systems AgBr – TlI and AgBr – TlBr0,46I0,54 has radioresistance properties, can be produced with permissible length, characterized by low optical losses with a small number and large radius of curves. This allows to use it for transmission of temperature signal from the surface of NPP equipment, including moving parts installed in the containment of NPP. Implementation of this method allows to avoid the operation of activated sensing elements in conditions of
more » ... amma and neutron fields of NPP containment. The optical fiber, suggested in the paper, is produced by the method of extrusion from single-crystal of silver and thallium halides and transparent in the mid-infrared band from 2,0 to 25,0 µm which is equivalent to the temperature range of -200...+1100°C.
doi:10.34031/es.2020.1.010 fatcat:yv5cifuirvbilgwhekukhtnxue