Analysis of the Processes in Spent Fuel Pools in Case of Loss of Heat Removal due to Water Leakage

Table 2

Comparison of SFP models for three different codes.

Parameter	ATHLET-CD	ASTEC	RELAP/SCDAPSIM
Total power of SFA, kW	4253
Water level, m	16.9
Water volume in SFP, m^3	5070
Initial water temperature, °C	50
Water leakage rate, kg/s	21.111
Water injection rate, kg/s	27.8
Time of water injection start, s	300000
Number of SFP nodes	22
Outside wall thickness, m	0.5
Heat transfer by radiation	evaluated
Oxidation reaction with air	evaluated
Oxidation reaction with steam	evaluated
Total hight of volume with air above water, m	11	11	11
SFP hall height, m	10	0	10
Height of air in SFP above water, m	1	11	1
Cooling of outside wall of SFP	Air (25°C)	Constant heat transfer coef. (5 W/m^2)	Air (25°C)
Number of modelled SFA group in SFP	4	4	1