... precharged with hydrogen, adding nickel to accelerate the hydrogen pickup, and altering coupon dimensions (thickness) to reduce the volume. Results show that the previously observed out-of-reactor effect of increasing hydrogen content above solubility leading to an increased corrosion rate in Zircaloy-4...

... in similar BWR environments. Because the main difference between Zr-2 and Zr-4 is that Zr-2 contains nickel as an alloying element, an investigation was pursued to elucidate the role of nickel. In this study, several Zr-2 and Zr-4 BWR fuel channel materials with low and high HPU exposed to known operating...

... In March 2018, the European Chemicals Agency, Risk Assessment Committee (RAC) published its final opinion for nickel (Ni) and its compounds. The proposed values were 0.005 mg/m 3 for the respirable fraction for both Ni metal and Ni compounds and 0.03 mg/m 3 for the inhalable fraction for Ni...

... degradation and still produce results that fall well in line with data extracted from the normal surveillance programs of the reactors. The flux effect as analysed from the mechanical property data appears to be negligible, if any. flux effects irradiation effects Nickel Manganese long term...

... A508 Gr 4N has improved fracture toughness because of the addition of 3% nickel, compared to typical low-alloy steels which have less than 1% nickel. However, there is an expectation in much of the recent literature, based mostly on low-alloy steels with nickel below 1%, that irradiation...

... Hydrogen and helium measurements in pure nickel irradiated to 100 dpa in HFIR at temperatures between 300 and 600°C show higher gas concentrations than predicted from fast-neutron reactions and the two-step 58 Ni(n,γ) 59 Ni (n,p and n,α) reactions. This additional gas production suggests...

... A major on-going research project is described that aims at generating relevant data for future risk assessments of environmental effects caused by copper, zinc, chromium and nickel release from roof materials. Cross-disciplinary activities have been implemented that range from the metal release...

..., chrome and nickel. DPA evaluated nuclear data libraries NJOY iron nickel chrome J. Changl, C-S. Gil 1, Y.S. Cho 1, and J-D. Kim. 1 Comparative Analysis of DPA Processed from Current Evaluated Nuclear Data Libraries Reference: Chang, J., Gil, C-S., Cho, Y. S., and Kim, J-D., "Comparative...

... arc weld metal modelling copper nickel hardness Charpy shift fracture toughness shift Timothy J. Williams I and David Ellis I A Mechanistically-Based Model of Irradiation Damage in Low Alloy Steel Submerged Are Welds Reference: Williams, T. J., and Ellis, D., "A Mechanistically-Based Model...

... The effect of nickel on irradiation sensitivity in ferritic steels is substantial, complex, and not yet fully understood. In this study, the evolution of irradiation induced microstructures in high nickel submerged arc welds has been examined in a series of small angle neutron scattering (SANS...

... The effects of copper, phosphorus and nickel on radiation embrittlement were investigated using an irradiation experiment at surveillance positions in two Russian VVER-type reactors with 8 iron-base testing alloys. Chemical composition varied between 0.015 to 0.42 % Cu, 0.002 to 0.039 % P, 0.01...

... the sensitivity of the steels to neutron irradiation was reduced. The deleterious elements which have been identified in the national databases as being responsible for the sensitivity are different. In the ‘Western’ case copper and nickel are identified and used in the current version of the USNRC Regulatory...

... had a 27°C (49°F) higher transition temperature than the beltline weld. Some postirradiation data are available and are presented in this paper, but the major part of the irradiation effects study will be reported subsequently. Charpy V-notch reactor pressure vessel copper nickel weld metal...

... Radiation-enhanced diffusion coefficients of 63 Ni in nickel and in copper were determined between -100°C and +500°C after an irradiation with 1.85 MeV electrons which were obtained from a Van de Graaff generator. The diffusion coefficients were obtained by counting the activity of successive...

... contamination as well as those caused by Ni contamination remarkably shorten lifetime measured by MOS C-t. recombination lifetime generation lifetime micro wave photoconductive decay method surface photovoltage method MOS C-t method iron nickel copper silicon Morimasa Miyazaki INFLUENCE...

... Cucumber (Cucumis sativus L. var. Chicago Pickler), lettuce (Lactuca sativa L. var. Buttercrunch), and millet (Panicum miliaceum) seeds were exposed for seven days to six or more concentrations of cadmium (Cd), chromium (Cr VI), copper (Cu), manganese (Mn), nickel (Ni), and zinc (Zn...

... results from the evaluation of the electric contact materials nickel, copper, silver and tin after 4 years of exposure. Dry deposition of SO 2 dominates the corrosion of nickel, which forms amorphous and crystalline basic nickel sulfate, whereas both O 3 and NO 2 accelerate the dry deposition of SO 2...

... Nine ASTM A588 low-alloy weathering steels representing three levels of silicon and nickel were prepared by induction melting and hot rolling in the laboratory. Corrosion tests were conducted for eleven years at four atmospheric sites which included industrial, rural, and marine locations...

... Pure nickel and Ni-2wt%Si doped with several levels of boron- 10 ( 10 B) and natural boron( n B) were irradiated in FFTF at 679, 793 and 873 K and 40 dpa, for the purpose of examining the applicability of. boron addition to the study of helium effects. The comparison of B and n B doped...

... In the design of the Soviet 1000-MW pressurized water reactor (PWR), developed to replace the former Soviet 440-MW PWR, the irradiation condition is much less severe. This condition permits the use of a new pressure vessel steel (PVS) 15KH2NMFAA containing nickel (Ni) rather than the previously...