PWR Integral tie plate and locking mechanism

Details PWR Integral tie plate and locking mechanism PWR Integral tie plate and locking mechanism

1977-06-10

1980-08-26

Engle, Samuel W.

Brushing, scrubbing, and general cleaning

151 6, 176 76, G21C 330, F16B 3900

Patent

active

042193869

ABSTRACT:
A locking mechanism for securing an upper tie plate to the tie rods of a nuclear fuel bundle. The mechanism includes an upper tie plate assembly and locking sleeves fixed to the ends of the tie rods. The tie plate is part of the upper tie plate assembly and is secured to the fuel bundle by securing the entire upper tie plate assembly to the locking sleeves fixed to the tie rods. The assembly includes, in addition to the tie plate, locking nuts for engaging the locking sleeves, retaining sleeves to operably connect the locking nuts to the assembly, a spring biased reaction plate to restrain the locking nuts in the locked position and a means to facilitate the removal of the entire assembly as a unit from the fuel bundle.

REFERENCES:
patent: 3431170 (1969-03-01), Lass
patent: 3953287 (1976-04-01), Long
patent: 3971575 (1976-07-01), Lesham
patent: 3992259 (1976-11-01), Anthony
patent: 4030975 (1977-06-01), Anthony
patent: 4038137 (1977-07-01), Pugh
patent: 4064004 (1977-12-01), Long

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