Analysis of NEA-NSC PWR Uncontrolled Control Rod Withdrawal at Zero Power Benchmark Cases with NODAL3 Code

Table 1

Steady-state results for Cases A, B, and D.

Parameters	Results	Reference	NODAL3
			AM	IQM
Case A
Critical boron concentration, ppm	B1	1262.7	1266.5 (0.30%)	1266.5 (0.30%)
Axial power peak factor,	B2	1.513	1.513 (0.00%)	1.513 (0.00%)
Radial power peak factor,	B3	1.242	1.234 (0.64%)	1.234 (0.64%)
Global (3D) power peak factor,	B6	1.880	1.868 (0.64%)	1.868 (0.64%)
Case B
Critical boron concentration, ppm	B1	793.6	795.0 (0.18%)	795.0 (0.18%)
Axial power peak factor,	B2	1.507	1.508 (0.07%)	1.508 (0.07%)
Radial power peak factor,	B3	1.912	1.905 (0.37%)	1.905 (0.37%)
Global (3D) power peak factor,	B6	2.886	2.877 (0.31%)	2.877 (0.31%)
Case D
Critical boron concentration, ppm	B1	793.6	795.0 (0.18%)	795.0 (0.18%)
Axial power peak factor,	B2	1.507	1.508 (0.07%)	1.508 (0.07%)
Radial power peak factor,	B3	1.912	1.905 (0.37%)	1.905 (0.37%)
Global (3D) power peak factor,	B6	2.886	2.877 (0.31%)	2.877 (0.31%)

Note. Number in parentheses are the absolute value of relative deviation of NODAL3 with the reference.