... with longitudinal segments of cladding tubes with a size of 50 × 6 × 0.6 mm were irradiated in five irradiation cycles to achieve six different values of neutron fluence. One/two MCAs were removed from the reactor core after each irradiation cycle and then cooled in the spent fuel pool. A unique cutting device...

..., and welds with a variety of chemical compositions, were irradiated in the BR2 reactor to a neutron fluence ranging from ∼3 to ∼9 × 10 19 n/cm², E >1 MeV at lower-than-usual irradiation temperatures (∼100 and 150°C) complemented with medium- to high-temperature irradiation data (260, 290, and 305°C...

..., such as international research projects with relevant contributions from Spanish organizations and the monitoring of neutron fluence facing long-term operation. radiation embrittlement neutron fluence pressure vessel surveillance program long-term operation Spain RADIATION EMBRITTLEMENT TREND CURVES...

... Exposure to fast neutron fluence causes damage to reactor vessels, and this damage must be constrained within limits for safe operation. Therefore, the fluence becomes an important quantity when such limits are approached. This paper discusses some impacts of fluence uncertainty on where...

..., spectra and neutron fluences with E n >0.5 MeV onto surveillance specimens of WWER-1000 reactor pressure vessel metal are determined by calculations. Program packages DETA and MCSS are designed in the Scientific Center “Institute for Nuclear Research” for the neutron transport calculations within...

... The neutron fluence determination methods and approaches applied for Kozloduy NPP reactors of type VVER-1000, Units 5 and 6, and VVER-440, Units 1 to 4, according to the Reactor Pressure Vessel Surveillance Program, are presented. The verification/validation of calculated neutron fluence...

...-sensor usage in reactor dosimetry and accompaniment in a large operating period: http://www.sandia.gov/events/isrd99 . electron spin resonance (ESR) ESR-sensors gamma fluence neutron fluence continual dosimetric cords (CDC) volume distribution A.F. Usatyi, V.B. Kajnov, L.A. Serdyukova...

.... zirconium alloys Zr-2.5Nb pressure tubes irradiation growth temperature neutron fluence iron nuclear materials radiation effects R. A. Holt, 1 A. R. Causey, 1 m. Griffiths, 1 a n d E. T. C. H o 2 High-Fluence Irradiation Growth of Cold-Worked Zr-2.5Nb REFERENCE: Holt, R. A., Causey, A. R...

..., which is available through the Internet partially. Furthermore, some trials of utilization of the system focused on the issues relating to IASCC are mentioned as follows: the effect of alloy composition, dissolved oxygen and neutron fluence on IASCC susceptibilities and SCC growth rate could be drawn...

... that, of the methods investigated, the “lateral shift” method gives the best result for estimating the transition temperature shift due to reirradiation. pressure vessel steels radiation embrittlement radiation effects neutron fluence annealing reembrittlement Amir D. Amayev~, Alexander M. Kryukov...

... Scanning transmission electron microscopy (STEM) analyses and HNO 3 /Cr +6 corrosion tests were carried out on irradiated Type 304 (UNS 530400) stainless steel (SS), in an attempt to correlate grain boundary composition with fast neutron fluence (E > 1 MeV) and irradiation-assisted stress...

.... The difference of growth strains of cold-worked Zr-2.5wt%Nb at different temperature of stress relief is related to the grain size and shape and the degree of cold work. zircaloy irradiation irradiation growth texture neutron fluence stress relief Jicai C. Yang 1 and Juyan Y. Ren I Irradiation...

... of exploitation, before and after the annealing, was carried out. The calculated and experimental values of the neutron fluence on the Unit 2 RPV are compared. WER-440 pressure vesse neutron fluence Krassimira D. Ilieva, I Tihomir G. Apostolov, I Sergey I. Belousov, 2 and Stoyan Y. Antonov 2 NEUTRON...

... For Reactor Pressure Vessel (RPV) neutron fluence monitoring at a nuclear power plant (NPP) with VVER-type reactor the Russian Nuclear Regulatory Body (GOSATOMNADZOR) has recently recommended use of the ex-vessel cavity dosimetry combined with neutron transport calculations. By using activation...

... Evaluation of neutron fluence for reactor vessels is important for evaluation of irradiation damage that may limit vessel life. The uncertainty in calculated fluence is considered to be typically about 20%. Benchmark measurements have improved confidence in the uncertainty assessments and enable...

... A general description of limitations that exist in pressure vessel neutron fluence determinations for commercial light water reactors is presented. Complexity factors that arise in light water reactor pressure vessel neutron fluence calculations are identified and used to analyze calculational...

... pressure vessel fluence analyses. neutron transport neutron fluence neutron dosimetry John R. White I, Keith B. Spinney 2, Kevin J. Morrissey 2, and Richard J. Cacciapouti ~ MAINE YANKEE DOSIMETRY CAPSULE AND PRESSURE VESSEL NEUTRON FLUENCE CALCULATIONS REFERENCE: White, J. R., Spinney, K. B...

... Neutron fluences were calculated for the first Reactor Vessel Surveillance (RVS) capsules extracted from Koeberg Unit 1 and 2. For the calculation of the Koeberg RVS-capsule dosimetry cross sections a calculational system (called PCDC) was developed on a 32-bit i386/i486 personal computer (PC...

... The embrittlement of microalloyed and grain-refined high tensile strength steel plates, which are to be extensively used as structural components in nuclear reactors in India, was studied after irradiating to neutron fluences between 1.7 x 10 17 and 1.0 x 10 19 n.cm 2 ( E > 1 MeV...

... Reactor Pressure Vessel (RPV) steels of different chemistry and specification were irradiated in the FRJ-1 research reactor at various neutron fluences. The irradiation temperature was 288°C. The results of instrumented impact tests of normal Charpy V specimens and the results of drop-weight...