(a) Material Specimen Temperature°C Stress (Kg/mm2) Rupture time (h) EL (%) RA (%) Ccu reactor Base 515 12 44 28 53 Base 515 12 32 40 49 Base 515 10 111 31 47 Base 515 10 138 36 41 Base 515 9 307 29 36 Base 515 9 282 29 44 Base 515 8 738 23 35 Base 515 8 1001 25 49 Base 515 6 3529 15 33 Base 515 6 2495 9 25 Weld 515 12 66 7 16 Weld 515 10 291 8 20 Weld 515 9 90 5 20 FPU-D1 column Base 515 12 51 20 42 Base 515 12 66 24 46 Base 515 10 483 9 29 Base 515 10 262 15 55 Base 515 9 740 12 25 Base 515 9 918 9.3 24 Base 515 8 1327 5 20 Base 515 8 3572 11 25 Base 515 6 5971 8 34 Base 515 6 2415 8 39 Weld 515 12 99 10 31 Weld 515 10 741 2.5 18 Weld 515 9 1480 4 13 Weld 515 8 537 2.1 12 (b) Material Specimen Temp, (°C) Stress,(Kg/mm2) Rupture Time, (h) % EL (%) RA (%) CCU reactor Weld 515 12 105 10 16 Weld 515 10 204 6.3 22 Cross weld 515 12 26 26 67 Cross weld 515 10 48 18 43 Cross weld 515 9 228 19 54 Cross weld 515 8 333 16 46 Cross weld 515 6 2608 9 28 Base 515 6 3000 27 14 Base 515 8 456 28 42 Base 515 9 144 30 48 Base 515 10 72 31 47 Base 515 12 34 29 48 FPU-D1 Column Base 515 12 36 43 78 Base 515 10 96 33 76 Base 515 8 576 38 72 Base 515 6 4704 33 49 Weld 515 12 110 22 70 Weld 515 10 204 25 61 Weld 515 8 432 31 38 Weld 515 6 4104 14 49

Table 2: (a) Stress rupture properties of (a) 55 year and (b) 51 year service exposed CCU reactor and FPU column materials.