초록 ▼

A nuclear reactor plant has a nuclear reactor vessel in a containment vessel. Air ducts, sump discharge lines, service water lines and other non-process non-critical lines extending through the wall of the containment vessel can be isolated passively (i.e., without instrumentation and control system

A nuclear reactor plant has a nuclear reactor vessel in a containment vessel. Air ducts, sump discharge lines, service water lines and other non-process non-critical lines extending through the wall of the containment vessel can be isolated passively (i.e., without instrumentation and control systems or power) should a postulated event which raises the atmospheric temperature within the containment vessel occur. The passive containment isolation system includes an isolation valve disposed in the non-process line and an actuator responsive to the atmospheric temperature within the containment vessel. The actuator is operatively connected with the isolation valve for closing the non-process line in response to the atmospheric temperature. The actuator is preferably disposed in or adjacent a containment sump at the bottom of the reactor vessel or adjacent the reactor vessel cavity where the temperature of the local atmosphere will most rapidly rise.

대표청구항 ▼

A nuclear reactor plant, comprising: a containment vessel having an atmosphere at a temperature; a fluid pipe extending through the containment vessel; a passive containment isolation system, including; an isolation valve disposed in the fluid pipe; and an actuator having a shape memory effect actua

A nuclear reactor plant, comprising: a containment vessel having an atmosphere at a temperature; a fluid pipe extending through the containment vessel; a passive containment isolation system, including; an isolation valve disposed in the fluid pipe; and an actuator having a shape memory effect actuating element responsive to atmospheric temperature within the containment vessel and operatively connected with the isolation valve for closing the fluid pipe in response to the atmospheric temperature.