Effects of process-generated hydrogen on RPV walls

Contents

5.2 Dissolved H 2 in primary water . . . . . . . . . . . . . . . . . . . . . 39 5.3 Corrosion of the RPV wall . . . . . . . . . . . . . . . . . . . . . . . . 43 5.4 Radiolysis in the primary water . . . . . . . . . . . . . . . . . . . . . 46 5.5 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 6 Hydrogen concentration in PWR wall 59 6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 6.2 Hydrogen from RPV production . . . . . . . . . . . . . . . . . . . . 59 6.3 In-service hydrogen generation . . . . . . . . . . . . . . . . . . . . . 60 6.4 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76 7 Hydrogen pressure in PWR 77 7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 7.2 Pressure during normal operating conditions . . . . . . . . . . . . . . 77 7.3 Pressure during incidental or accidental conditions . . . . . . . . . . 88 7.4 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 8 Conclusion 95 A Radiolysis model code 101 Bibliography 121

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