| 976 / | HD | NUCLEAR TECHNOLOGY |
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| DIG 37 | DD | REACTOR FUEL ELEMENTS AND THEIR ASSEMBLIES; SELECTION OF SUBSTANCES FOR USE AS REACTOR FUEL ELEMENTS [G21C-3/00] {5} |
| DIG 58 | DD | .~ Assemblies of number of fuel elements in the form of a rigid unit [G21C-3/30] {2} |
| DIG 59 |  | .~.~ Bundles of parallel pin-, rod-, or tube-shaped fuel elements [G21C-3/32] {9} |
| DIG 60 | DD | .~.~.~> Means to influence the coolant flow through or around the assembly [G21C-3/32B] *** (DIG. 246 takes precedence) |
| DIG 61 | DD | .~.~.~> Coats and envelope surrounding the assembly [G21C-3/32C] |
| DIG 62 | DD | .~.~.~> Made of moderator-material [G21C-3/32D] |
| DIG 63 | DD | .~.~.~> Comprising fuel-elements of various compositions; comprising other pin-, rod-, or tube-like forms [G21C-3/32G] *** (elements influencing the coolant flow DIG. 60) {1} |
| DIG 65 | DD | .~.~.~> Supporting or hanging the elements in the assembly [G21C-3/32H] *** (Spacer grids DIG. 71); Means forming part of the assembly for inserting it into, or removing it from, the core; Means for coupling adjacent assemblies (means forming part of the element for inserting it into, or removing it from, the core; or means for coupling adjacent elements DIG. 49) {1} |
| DIG 67 | DD | .~.~.~> Means for the storage or removal of fission gases [G21C-3/32K] *** (means for the storage of fission gases in the elements DIG. 50; means for the removal of fission gases from elements DIG. 39+) |
| DIG 68 | DD | .~.~.~> Assembling the bundle; Exchange of elements in the bundle [G21C-3/32L] |
| DIG 69 | DD | .~.~.~> Spacer elements [G21C-3/32M] *** (spacer grids DIG. 71) {1} |
| DIG 71 | DD | .~.~.~> Spacer grids; other spacer devices [G21C-3/34] {6} |