ESPOO 2004 VTT TIEDOTTEITA 2272 SAFIR The Finnish Research Programme on Nuclear Power Plant Safety 2003-2006 Interim Report N=2425 N=2455 N=2505 N=2555 N=2605 N=2655 N=2705 N=2755 N=2805 N=2855 N=2905 N=2955 N=3005 N=3055 N=3105 N=3155 N=3205 N=3255 N=3305 N=3355 275 M Pa - 275 M Pa - 0,3 % 0,3 % 320 °C PWR ε a = 0,31% Crack closure N=2425 N=2455 N=2505 N=2555 N=2605 N=2655 N=2705 N=2755 N=2805 N=2855 N=2905 N=2955 N=3005 N=3055 N=3105 N=3155 N=3205 N=3255 N=3305 N=3355 275 M Pa - 275 M Pa - 0,3 % 0,3 % N=2425 N=2455 N=2505 N=2555 N=2605 N=2655 N=2705 N=2755 N=2805 N=2855 N=2905 N=2955 N=3005 N=3055 N=3105 N=3155 N=3205 N=3255 N=3305 N=3355 N=2425 N=2455 N=2505 N=2555 N=2605 N=2655 N=2705 N=2755 N=2805 N=2855 N=2905 N=2955 N=3005 N=3055 N=3105 N=3155 N=3205 N=3255 N=3305 N=3355 275 M Pa - 275 M Pa - 0,3 % 0,3 % 320 °C PWR ε a = 0,31% Crack closure SAFIR