Effects of process-generated hydrogen on RPV walls

List of Tables

1.1 Material composition of the different steels used in a RPV . . . . . . . . 8

2.1 Number and size of indications measured in the core shells of the Doel 3 and Tihange 2 RPV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 5.1 G-values for the different species in the primary water. . . . . . . . . . . 48 5.2 Reaction rate constants for the chemical reactions. . . . . . . . . . . . . 50 5.2 Reaction rate constants for the chemical reactions. . . . . . . . . . . . . 51 5.3 Conditions for stability test of model. . . . . . . . . . . . . . . . . . . . 53 6.1 H concentration in the RPV components after production. . . . . . . . . 60 6.2 Maximum Henry coefficient and corresponding temperature for the noble gases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64 6.3 Conditions for begin of cycle without radiation. . . . . . . . . . . . . . . 69 6.4 Hydrogen charging rates of H in the RPV due to corrosion. . . . . . . . 74 6.5 Hydrogen charging ratesin the RPV due to corrosion. . . . . . . . . . . 75 7.1 Data used for the calculation of the temperature profile in the RPV wall during a cold shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 7.2 Data used for the calculation of the time dependent concentration profile in the RPV wall during a cold shutdown. . . . . . . . . . . . . . . . . . 82 7.3 Maximum hydrogen fugacity in the base material of the RPV due to corrosion after cold shutdown. . . . . . . . . . . . . . . . . . . . . . . . . 86 7.4 Maximum hydrogen fugacity in the base material of the RPV due to corrosion after a PTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

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