The Use of System Codes in Scaling Studies: Relevant Techniques for Qualifying NPP Nodalizations for Particular Scenarios

Table 1

NPP SBLOCA/IBLOCA validation matrix.

Test phenomena	Counterpart tests		Counterpart tests		ROSA 2 test 1
	PKL III G7.1	ROSA 2 Test 3	BL-34 (LOBI)	SB-CL-21 (LSTF)
1-phase natural circulation			X	O
2-phase natural circulation	X	X	X	O
Reflux and condensation	X	X	X	O
Asymmetric loop behavior	X			O
Break flow	X	X	X	O	X
Phase separation without mixture level formation	X	X	O	O	X
Mixture level and entrainment on SG secondary side	X	X	X	O
Core mixture level	X	X	X	O	X
Stratification in horizontal pipes	X	X	X	O	X
Phase separation T-junction and effect on break flow	X	X		O	X
ECC-mixing and condensation	X	X	X	O	X
Loop seal clearing			X	X	X
Pool formation in UP/CCFL				O	X
Core-wide void and flow distribution	X	X		O	X
Heat transfer in covered core	X	X	X	O	X
Heat transfer in preuncovered core	X	X	X	O	X
Heat transfer on SG primary side	X	X	X	O	X
Heat transfer on SG secondary side	X	X	O	O	X
Pressurizer thermalhydraulics				X
Surgeline hydraulics				X
1-phase 2-phase pumps behavior				O
Structural heat and heat losses	X	X	X	O	X
Noncondensable gas effect
Boron mixing transport
CET versus PCT relationship	X	X

X: totally reproduced, O: partially reproduced.