J. Phys. IV France 11 (2001) Pr8-593-Pr8-598
Pipe-line SM-devices for power applicationR.R. Ionaytis, A.Yu. Vasilenko, V.F. Lisovoy and M.A. Tooktarov
Research and Development Institute of Power Engineering, P.O. Box 788, 101000 Moscow, Russia
Nuclear power plants (NPP) are supplied with numerous and various pipeline devices (PLD) that are in hard operating conditions. The number of PLD failures at NPP have already reached 35 % of total number of component failures. The main directions of PLD modernization based on shape memory (SM) devices are considered in this paper. Quick replaceable flat-annular fixing-sealing SM-elements for valve seat sealing and welded joint protection are proposed. Small-size non-reducing electrically-driven progressive SM-actuators, passive (directacting) SM-initiators of valves at accident changes of power plant parameters (temperature, pressure, low water level, neutron flux, etc.) are discussed.
© EDP Sciences 2001