Abstract: An array of connected plates mounted on the inside wall of the vacuum vessel of a magnetic confinement reactor in order to provide a protective surface for energy deposition inside the vessel. All fasteners are concealed and protected beneath the plates, while the plates themselves share common mounting points. The entire array is installed with torqued nuts on threaded studs; provision also exists for thermal expansion by mounting each plate with two of its four mounts captured in an oversize grooved spool. A spool-washer mounting hardware allows one edge of a protective plate to be torqued while the other side remains loose, by simply inverting the spool-washer hardware.

Abstract: A table has upper and lower sections with the lower section provided with legs having vertically spaced holders and the upper sections having supports engageable therewith. The two sections are interconnected to enable the upper section to be turned in one direction to effect engagement with a selected set of holders and in the opposite direction to effect their release therefrom and the connection between the sections also enables the upper section then to be moved vertically to an extent such that the supports may be seated on another set of holders.