Shock damping device for neutron absorbing bars

Details Shock damping device for neutron absorbing bars Shock damping device for neutron absorbing bars

1987-12-09

1991-12-31

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

With control of reactor

By movement of control element or by release of neutron...

376225, G21C 720

Patent

active

050769952

ABSTRACT:
A device for damping the fall of a neutron absorbing bar on the upper end piece of a nuclear fuel assembly, typically a PWR, comprises at least one pair of cylinder-piston sets which are located symmetrically with respect to the vertical axis of the fuel assembly. One of the cylinder and piston in each set is carried by a fixed plate secured to the upper end piece. The other of the cylinder and piston is fixed to a movable plate arranged to receive the bar upon fall thereof and to move vertically toward the fixed plate, damping being achieved by the head loss impressed to the fluid forced out of the cylinders.

REFERENCES:
patent: 3212979 (1965-10-01), Silverblatt
patent: 3346459 (1967-10-01), Prince et al.
patent: 4024018 (1977-05-01), Barnes
patent: 4035230 (1977-07-01), Bevilacqua
patent: 4655990 (1987-04-01), Leclercq
patent: 4675151 (1987-06-01), Leclerq
patent: 4762661 (1988-08-01), Leclercq et al.

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