Science and Technology of Nuclear Installations

Research Article

PACTEL and PWR PACTEL Test Facilities for Versatile LWR Applications

Table 3

PWR PACTEL characteristics.


Characteristics	PWR PACTEL	PWR/EPR⁽²⁾ (Olkiluoto 3)

Reference power plant (loops and steam generators)	PWR/EPR	—
Volumetric scale⁽¹⁾: pressure vessel/steam generators/pressurizer	1 : 405/1 : 400/1 : 565	—
Height scale⁽¹⁾: pressure vessel (core; relative elevation)/steam generators/pressurizer	1 : 1/1 : 4/1 : 1.6	—
Number of primary loops	2	4
Steam generator type	Vertical	Vertical
Maximum heating power⁽¹⁾—thermal power [MW]	1	4300
Number of rod simulators⁽¹⁾—fuel rods	144	63865
Heated length of rod simulators⁽¹⁾—active core height [m]	2.42	4.2
Axial power distribution⁽¹⁾	Chopped cosine	—
Maximum cladding temperature⁽¹⁾ [°C]	800	—
Maximum operating pressure⁽¹⁾—operational/design pressure [MPa]	8.0	15.5/17.6
Maximum operating temperature⁽¹⁾—inlet/outlet coolant temperature [°C]	300	296/329
Maximum secondary pressure—design secondary pressure [MPa]	5.0	10
Maximum secondary temperature—design secondary temperature [°C]	260	311
Main material of components	Stainless steel	—
Insulation material	Mineral wool (Aluminium cover)	—
Steam generator U-tube diameter/thickness [mm]	19.05/1.24	19.05/1.09
Average steam generator U-tube length [m]	6.5	—
Number of U-tubes in steam generator	51	5980
Number of instrumented U-tubes in steam generator 1/steam generator 2⁽³⁾	8/14 (51⁽³⁾)	—

⁽¹⁾PWR PACTEL and PACTEL utilize the same pressure vessel and pressurizer parts (see Table 1).
⁽²⁾Reference NPP characteristics are taken from “Nuclear Power Plant Unit, Olkiluoto 3” (12/2010) which is a publication of Teollisuuden Voima Oyj (TVO) company.
⁽³⁾Each of the 51 U-tubes in steam generator 2 has at least one temperature measurement.