Assembly mechanism for nuclear fuel bundles

Details Assembly mechanism for nuclear fuel bundles Assembly mechanism for nuclear fuel bundles

1976-02-23

1977-12-20

Engle, Samuel W.

176 76, G21C 330

Patent

active

040640043

ABSTRACT:
In a nuclear power reactor fuel bundle having tie rods fastened to a lower tie plate and passing through openings in the upper tie plate, the assembled bundle is secured by locking lugs fixed to rotatable locking sleeves which engage the upper tie plate. Pressure exerted by helical springs mounted around each of the tie rods urge retaining lugs fixed to a retaining sleeve associated with respective tie rods into a position with respect to the locking sleeve to prevent accidental disengagement of the upper plate from the locking lugs. The bundle may be disassembled by depressing the retaining sleeves and rotating the locking lugs to the disengaged position, and then removing the upper tie plate.

REFERENCES:
patent: 3382153 (1968-05-01), Bigge
patent: 3431170 (1969-03-01), Lass
patent: 3608933 (1971-09-01), Lee
patent: 3741868 (1973-06-01), Qurnell
patent: 3769158 (1973-10-01), Winders
patent: 3864211 (1975-02-01), King
patent: 3953287 (1976-04-01), Long
patent: 3971575 (1976-07-01), Lesham

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