Scalability of the natural convection shutdown heat removal test facility (NSTF) data to VHTR/NGNP RCCS designs.

Topical report: Natural convection shutdown heat removal test facility (NSTF) evaluation for generating additional reactor cavity cooling system (RCCS) data.

“…The support plate also seals off the available space exterior to the RCCS tubes, thereby providing a stagnant air environment that is consistent with the GA GT-MHR RCCS design. 2 An alignment plate ( Figure 5.3) is used to ensure proper positioning of the twelve tubes within the opening at the lower heated section inlet. The alignment plate also seals off the bottom of the section to produce the proper boundary condition for the RCCS tube enclosure.…”