Regional Basic Professional Training Course in Korea

Regional Basic Professional Training Course (BPTC) on Nuclear Safety
NOTRUMP code solves governing equation of mixture momentum conservation,
mixture energy conservation, vapor energy conservation, mixture mass conservation,
vapor mass conservation simultaneously with metal energy conservation equation. RCS
can be modeled using “fluid node, boundary node, homogeneous mixture node,
cylindrical node, and T‐node” optionally. Mass and momentum transfer, critical flow can
be simulated at the “link” representing flow path. Thermal conduction equation is solved
at the “heat link” representing heat structure. Radial temperature distribution, gap
conductance, and metal‐water reaction can be considered at the heat link simulating the
reactor core. As a default, a discretization scheme with 10 nodes in radial direction, 14
nodes in axial direction is used. Additionally, the code has flooding model determining
the heat transfer between fluid node and metal node, bubble rising model, drift flux
model, the loop seal clearing control model restricting the loop seal clearing, horizontal
stratified flow model, pump model, and accumulator model.
SBLOCTA code models three fuel rods in hot assembly of a reactor core. Radial and
axial conduction equations are solved with considering the power profile. Blockage of
assembly, cladding swell and rupture, and metal‐water reaction are calculated.
Figure 8.8‐15 NOTRUMP Nodalization of KSNP
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