FIELD: pressurized-water reactor equipment.
SUBSTANCE: proposed device for securing pressurized-water reactor core with coolant flowing over it has supporting cylinder and flexible member. Supporting cylinder is mounted on pressurized tank flange. Flexible member has a number of adjacent circular segments disposed between and engageable with supporting cylinder flange and pressurized tank cover flange. Each circular segment of flexible member has segmental supporting plate. The latter mounts hold-down devices secured thereon by means of locking devices. Each hold-down device has supporting sleeve accommodating working element of precompressed thermally expanded graphite which is locked therein by means of locking device, as well as hold-down bushing. The latter is in contact with working element or with locking device.
EFFECT: reduced vibration of reactor core when changed over to fuel load incorporating zirconium-can fuel assemblies.
7 cl, 10 dwg
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