Nuclear fuel assembly with coolant conducting tube

Details Nuclear fuel assembly with coolant conducting tube Nuclear fuel assembly with coolant conducting tube

1981-04-29

1983-12-13

Nelson, Peter A.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376440, 376451, 376453, G21C 332

Patent

active

044204582

ABSTRACT:
In a nuclear fuel assembly having a coolant conducting or water tube which also retains the spacers in axial position, the fuel rods experience greater axial growth with exposure than the water tube creating a risk that the water tube might become disengaged from the supporting tie plates. An arrangement for preventing such disengagement is described including lengthened end plug shanks for the water tube, a protective boss surrounding the lower end plug shank to protect it from flow induced vibration, a conical seat for the lower end plug and an arrangement for limiting upward movement of the water tube.

REFERENCES:
patent: 3423287 (1969-01-01), Anthony et al.
patent: 3466226 (1969-09-01), Lass
patent: 3802995 (1974-04-01), Fritz et al.
patent: 3963566 (1976-06-01), MacMillan et al.
patent: 4022661 (1977-05-01), Smith et al.
patent: 4135971 (1979-01-01), Calvin
patent: 4304631 (1981-12-01), Walton et al.
patent: 4313796 (1982-02-01), Buettiker

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