Block-type movable reflector/moderator (RM) for nuclear reactor control

Abstract

A block-type movable reflector/moderator (RM) for nuclear reactor control is disclosed. This reactor control system can be applied to all types of reactors regardless of design. This design for reactor control is used in addition to the necessary rod control system in accordance with the 10CFR50 design criteria. This allows for the requirements of the NRC to be met along with the ability for dual control on power control of any type reactor regardless of process output from the secondary plants.

Claims

1: This invention changes the physical geometry around the core and therefore can always be relied upon to perform its function of controlling power through all normal power ranges,

2: This invention changes the physical geometry around the core and therefore can always be relied upon to shutdown and hold the reactor core subcritical under cold conditions.

3: This invention can be applied to all types of reactors regardless of design. This design for reactor control is used in addition to the necessary rod control system in accordance with the 10CFR50 design criteria. This allows for the requirements of the NRC to be met along with the ability for dual control on power control of any type reactor regardless of process output from the secondary plants.

Description

DRAWING FIGURE DESCRIPTION

[0035] FIG. 1: is a schematic of the invention in a static position

[0036] FIG. 2: is a schematic top view of the invention in a static position

[0037] FIG. 3: is a schematic illustrating the reflector/moderator blocks 26 in an extended position and the suspension rod brace 28 compressed

[0038] FIG. 4: is a schematic top view illustrating the reflector/moderator blocks 26 in an opened position

[0039] FIG. 5: is a schematic illustrating the reflector/moderator blocks 26 in a closed position

[0040] FIG. 6: is an enlarged view of the neutron reflector/moderator blocks 26

ITEMIZED PARTS LIST

[0041] 10: is the carriage brace [0042] 12: are the suspension rods [0043] 14: is the vertical gearing rod [0044] 16: is the vertical gearing rod motor [0045] 18: is the center gearing [0046] 20: is the carriage brace motor [0047] 22: is the neutron detection system input (incore or excore detectors) [0048] 24: is the control logic for movement [0049] 26: are the neutron reflector/moderator blocks [0050] 28: is the suspension rod brace (to control downward movement of RM blocks [0051] 30: is the release locks [0052] 32: is the carriage [0053] 34: is the reactor core [0054] 36: is the reactor containment [0055] 38: is the reactor