Method for designing a nuclear fuel assembly with damping...

Details Method for designing a nuclear fuel assembly with damping... Method for designing a nuclear fuel assembly with damping...

2003-02-25

2009-12-01

Palabrica, Rick (Department: 3663)

Induced nuclear reactions: processes, systems, and elements

With control of reactor

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

C376S224000, C376S225000, C376S207000

Reexamination Certificate

active

07627073

ABSTRACT:
A method to design a nuclear fuel assembly having the following steps including establishing the falling speed of the control rod upon entry into the lower damping portion when the control cluster falls in the event of a shutdown of the nuclear reactor, establishing, based on the falling speed established in step a), the progression of the falling speed of the control rod in the lower damping portion, establishing, based on the progression of the speed established in step b), a maximum elevated pressure produced in the liquid contained in the lower damping portion, and establishing, based on the maximum elevated pressure established in step c), a maximum circumferential stress produced in the lower damping portion.

REFERENCES:
patent: 3762994 (1973-10-01), Kunzel
patent: 3779134 (1973-12-01), Daublebsky et al.
patent: 3830694 (1974-08-01), Acher
patent: 3843471 (1974-10-01), Flinn
patent: 3562109 (1981-02-01), Bezold et al.
patent: 5076995 (1991-12-01), Canat
patent: 0 971 364 (2000-01-01), None
Design and Construction Rules for Fuel Assemblies of PWR Nuclear Power Plants, 1998, Chapter 6: Fuel System Design, p. 239.
United States Nuclear Regulatory Commission, Appendix B to Part 50—Quality Assurance Criteria for Nuclear Plants and Fuel Reprocessing Plants, Dec. 14, 2007.

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