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This paper gives the results obtained for the phase II, Task B2 Round Robinorganised by the CEA Saclay within the ESIS (European Structural Integrity Society),Technical Committee 8 on Numerical Methods. It is part of a larger project initiated in1993 and organised in 3 phases. Phase I was focussed on the determination of localapproach parameters for ductile tearing (Task A) and for cleavage (Task B) for a Germanpressure vessel steel. The objective of Phase II was to perform finite element simulation ofcrack growth CT for ductile tearing (Task A) and for cleavage (Task B). For this latterTask, the objective was to compute the toughness and the failure probability of a CTspecimen on the lower shelf at –154°C for the 22 NiMoCr 3 7 German RPV steel. Elevenlaboratories have contributed to this Round Robin and six different FE codes have beenused.