Water chemistry and materials degradation in LWR's

Kari Törrönen, Pertti Aaltonen, Hannu Hänninen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsProfessional


Water chemistry plays a major role in corrosion, in erosion corrosion and in activity transport in NPPs; it impacts upon the operational safety of LWRs in two main ways: integrity of pressure boundary materials and activity transport and out-of-core radiation fields. A good control of water chemistry can significantly reduce these problems and improve plant safety, but economic pressures are leading to more rigorous operating conditions: fuel burnups are to be increased, higher efficiencies are to be achieved by running at higher temperatures and plant lifetimes are to be extended. Typical water chemistry specifications used in PWR and BWR plants are presented and the chemistry optimization is discussed. The complex interplay of metallurgical, mechanical and environmental factors in environmental sensitive cracking is shown, with details on studies for carbon steels, stainless steels and nickel base alloys.
Original languageEnglish
Title of host publicationSpecialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials
Place of PublicationParis
PublisherOECD NEA Nuclear Energy Agency
Publication statusPublished - 1995
MoE publication typeD3 Professional conference proceedings
EventSpecialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials - Kiev, Ukraine
Duration: 19 Sept 199423 Sept 1994

Publication series

SeriesOECD General Distribution Reports
SeriesNEA Committee on the Safety of Nuclear Installations. Report


ConferenceSpecialists' Meeting on Erosion and Corrosion of Nuclear Power Plant Materials


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