The LOBI Integral System Test Facility Experimental Programme

Table 1

LOBI test facility design and operational parameters.

Reference plant	Siemens-KWU	Biblis B
	Loops	4
	Power	1300 MWe
Primary system	Loops	2 (1 : 3)
	Total volume	0.6 m³
	Scaling factor	1 : 700
Core	Power	5.28 MWe
	Length	3.9 m
	Number of rods	64
	Matrix	8 × 8 square
	Heater rod OD	10.75 mm
	Pitch	14.3 mm
	Electrical heating	Direct
Vessel downcomer	Configuration	Annular
	Gap width	MOD1: 50 and 12 mm
		MOD2: 12 mm
Steam generators	Type	U-Tubes
	Number of tubes	1-Loop SG: 8
		3-Loop SG: 24
Main coolant pumps	Type	Centrifugal
	Specific speed (DIN)	29.2
Operational conditions	Primary system pressure	15.8 MPa
	Core temperatures	294/326°C inlet/outlet
	Secondary system pressure	6.4 MPa
	SG temperatures	210/280°C inlet/outlet
Organisation	EC joint research centre	Ispra, Italy