Reactor pressure vessel
PROSIR and LWR Reactor Pressure Vessel safety margins
... One of the key issue of ageing of nuclear power plants is the radiation effect on the reactor pressure vessel that leads to material embrittlement and can reduce the safety margins in case of ...
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Finite Element Analysis of Horizontal Reactor Pressure Vessel Supported on Saddles
... Abstract: Reactor pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from the ambient ...the pressure vessels are designed ...
8
Evaluation of Pressurised Thermal Shocks for VVER 440/213 Reactor Pressure Vessel in NPP Dukovany (G326)
... shock, reactor pressure vessel, nuclear power plant, integrity, thermal hydraulic analyses, mixing, fracture mechanics, stress intensity factor, postulated defect, crack, finite element method, ...
8
High-Temperature Water Effects on the Fracture Behaviour of Low-Alloy Reactor Pressure Vessel Steels
... of reactor pressure vessel (RPV) is of utmost importance regarding operation safety and service lifetime of light water reactors (LWR) and assuring sufficient margins against brittle and ductile ...
198
Fracture Analysis for Reactor Pressure Vessel Nozzle Corner Cracks
... water reactor (BWR) and pressurized water reactor (PWR) nozzles located in the reactor pressure vessel (RPV) adjacent to the core beltline ...into pressure- temperature (P-T) ...
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Preliminary Studies on Thermal Cycling of Reactor Pressure Vessel Steel
... The reactor pressure vessel (RVP) of a pressurized water reactor (PWR) or a boiling water reactor (BWR), ...water reactor (LWR), is made of carbon ...These pressure ...
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Size Effects on Failure Behaviour of Reactor Pressure Vessel Steel and their Dependence on Deformation Inhomogeneity (G439)
... of reactor vessel components is very important for design evaluations as well as for the integrity check of the reactor pressure vessel after severe accident ...the reactor ...
8
Accelerated Corrosion Tests of Nuclear Reactor Pressure Vessel Materials in NaCl H3BO3 Solutions
... the reactor pressure vessel subjected to the accident at Fukushima Daiichi nuclear ...months reactor pressure vessels subjected to the accident were exposed in a very serious ...of ...
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Sampling of Reactor Pressure Vessel Inner Cladding for Retrospective Dosimetry Analysis
... VVER reactor pressure vessel (RPV) inner cladding in order to evaluate neutron fluence for the entire period of nuclear power plant unit ...the reactor operation and to assess the total ...
8
Size Effects in Deformation and Fracture of a Ferritic Reactor Pressure Vessel Steel
... of reactor structures and to improve and extend basic knowledge, parts of the EU-project REVISA* are concerned with the size effect ...ferritic reactor pressure vessel steel 20MnMoNi55 ...
9
Three Dimensional Fracture Analysis of the Reactor Pressure Vessel Inlet Nozzle Under Pressurized Thermal Shock
... This paper presents a 3D FE mechanical analysis of the brittle fracture risk of a Reactor Pressure Vessel (RPV) inlet nozzle corner submitted to a Pressurized Thermal Shock (PTS). The input transient ...
8
Structural Assessment of a Corrosion-Degraded Reactor Pressure Vessel Head (D448)
... power reactor pressure vessel (RPV) are being carried out at Oak Ridge National ...low-alloy pressure vessel steel surrounding a control-rod drive mechanism (CRDM) nozzle penetration ...
8
Comparison of "VERLIFE" and Russian Methodologies for Reactor Pressure Vessel Integrity Assessment
... the reactor pressure vessel (RPV) integrity in the Czech Republic is based on the „Unified Procedure for Lifetime Assessment of Components and Piping in WWER NPPs, VERLIFE” developed within the ...
13
Updated Embrittlement Trend Curve for Reactor Pressure Vessel Steels (G479)
... High energy neutrons interact with the atomic nuclei in reactor pressure vessel steels. The energy transferred during these interactions displaces iron atoms from their natural crystal lattice ...
8
Flux Effect on Radiation Embrittlement of VVER-440 Reactor Pressure Vessel Materials
... The results of the studies concerning determination of a dependence of radiation embrittlement on fast neutron flux for VVER-440 reactor pressure vessel (RPV) materials before and after annealing are ...
13
Lifetime analysis of WWER Reactor Pressure Vessel Internals concerning material degradation
... - reactor pressure vessel, steam generator, pressurizer, main circulating pump, main gate valve, pipelines, vessels, pumps, heat exchangers and valves - classified into the safety classes 1 and 2, ...
8
P-T limit curve of reactor pressure vessel with nozzle corner crack
... maximum pressure and minimum temperature for several operation conditions, based on the principle of linear elastic fracture mechanics, to prevent a non-ductile fracture during the operation of a reactor ...
8
Problems of Underclad Type Defects in Reactor Pressure Vessel Integrity Evaluation (G327)
... In NRI Rez 16 experiments on specimens with test section of 70x100 mm were performed, in co-operation with FORTUM Nuclear Services Ltd. The specimens were manufactured from reactor pressure vessel of ...
8
Rupture Tests with Reactor Pressure Vessel Head Models (J184)
... These tests were performed under quasistatic pressure load at room temperature [1]. Two specimens sizes were tested and in half of the tests the specimens contain holes describing the control rod penetrations of ...
8
Radiation Embrittlement of VVER-1000 Reactor Pressure Vessel Materials
... VVER-1000 reactor pressure vessel welds the flux effect is caused by different change in material structure at nanolevel after irradiation with various rate to the same level of damaging dose of ...
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