Assessment of WWER-type reactor vessels radiation lifetime of Ukrainian NPPs
Creators
- 1. Institut yadernykh issledovanij, Kyiv (Ukraine)
Description
The Ni content in the welds of 9 energetic units of WWER-1000 type NPPs operating in Ukraine now exceeds the standard value. The increase of the Nickel concentration beyond the regulated one is known to lead to the increase of the irradiation embrittlement rate. The highest content of Nickel is in the weld metal of Khmelnitsky NPP-1 and it is equal to 1,88 %. Therefore, the paper considers just this case as the most complicated. In the paper the performed analysis of the dependence of the brittle critical temperature of the weld metal on the accumulated neutron fluence has shown the critical temperature not to exceed (with the confidence probability 95%) the regulated dependence. Thus, the state of the weld metal does not limit the design lifetime of the given reactor vessel
Additional details
Additional titles
- Original title (Russian)
- Оценка радиационного ресурса корпусов реакторов типа VVEhR-1000 атомных электростанций Украины
Publishing Information
- Journal Title
- Zbyirnik naukovikh prats' Yinstitutu Yadernikh Doslyidzhen'
- Journal Issue
- no.1/14
- Journal Page Range
- p. 67-74
- ISSN
- 1606-6723
INIS
- Country of Publication
- Ukraine
- Country of Input or Organization
- Ukraine
- INIS RN
- 36112992
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CRITICAL TEMPERATURE; DOSE-RESPONSE RELATIONSHIPS; EMBRITTLEMENT; FAST NEUTRONS; NEUTRON FLUENCE; NICKEL; NOVOVORONEZH-5 REACTOR; PHYSICAL RADIATION EFFECTS; POST-IRRADIATION EXAMINATION; REACTOR MATERIALS; REACTOR VESSELS; SERVICE LIFE; STOICHIOMETRY; WELDED JOINTS
- Descriptors DEC
- BARYONS; CONTAINERS; ELEMENTARY PARTICLES; ELEMENTS; ENRICHED URANIUM REACTORS; FERMIONS; HADRONS; JOINTS; LIFETIME; MATERIALS; METALS; NEUTRONS; NUCLEONS; PHYSICAL PROPERTIES; POWER REACTORS; PWR TYPE REACTORS; RADIATION EFFECTS; REACTORS; THERMAL REACTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS; TRANSITION TEMPERATURE; WATER COOLED REACTORS; WATER MODERATED REACTORS; WWER TYPE REACTORS