US 11,854,710 B2
Nuclear reactor fuel assembly manufacturing method
Elena Vasilyevna Yudina, g. Novosibirsk (RU); Evgeny Gennadyevich Zelenkov, g. Novosibirsk (RU); Alexander Vladimirovich Strukov, g. Novosibirsk (RU); Sergei Anatolyevich Buimov, g. Novosibirsk (RU); Anatoly Savvich Tlusty, g. Novosibirsk (RU); and Rasim Farmanogly Mustafaev, g. Novosibirsk (RU)
Assigned to Publichnoe Aktsionernoe Obshchestvo “Novosibirsky Zabod Khimkontsentratov”, Novosibirsk (RU)
Appl. No. 17/256,591
Filed by PUBLICHNOE AKTSIONERNOE OBSHCHESTVO “NOVOSIBIRSKY ZAVOD KHIMKONTSENTRATOV” (PAO NZHK), Novosibirsk (RU)
PCT Filed Jul. 15, 2019, PCT No. PCT/RU2019/000502
§ 371(c)(1), (2) Date Dec. 28, 2020,
PCT Pub. No. WO2021/010852, PCT Pub. Date Jan. 21, 2021.
Prior Publication US 2022/0130559 A1, Apr. 28, 2022
Int. Cl. G21C 3/334 (2006.01); G21C 3/20 (2006.01); G21C 21/02 (2006.01); G21C 3/07 (2006.01)
CPC G21C 3/334 (2013.01) [G21C 3/20 (2013.01); G21C 21/02 (2013.01); G21C 3/07 (2013.01)] 2 Claims
 
1. A method for manufacturing nuclear reactor fuel assembly, the method comprising the steps:
(a) applying a protective coating on fuel elements, wherein during the applying, each fuel element is moved through a protective coating application device installed on an assembly stand, and wherein the protective coating comprises a water-soluble lubricant consisting of nonylphenol ethoxylate and monobasic unsaturated fatty acids;
(b) installing the coated fuel elements into grid cells of an assembly, wherein during the installing, each coated fuel element is moved on the assembly stand in a horizontal direction along its own axis into the grid cells;
(c) subsequent to (b), attaching top and bottom nozzles to the assembly;
(d) subsequent to (c), washing the fuel elements to remove the protective coating from the fuel elements; and
(e) subsequent to (d), drying the fuel elements;
wherein at least part of steps (a) and (b) occur simultaneously.