Original dimension and material — but not the original number or area — were used for the test sections Emergency Condenser, Building Condenser, Plate Condenser and Passive Initiator. For all tests the thermal hydraulic boundary and initial conditions were equivalent to these of the SWR 1000; the only exception was that Helium instead of Hydrogen was used for related tests.

1.2. Emergency Condenser 1. Bundle

In Fig. 4 the configuration with the first Bundle is shown; the geometrical data for one tube are:

average length 10 m inner diameter 38.7 mm

wall thickness 2.9 mm.

In Fig. 5 the experimental data (solid lines) are compared with calculations with 4 different codes; the agreement is good.