In Memoriam: Professor Pavel Leonidovich Kirillov (20.08.1927 08.10.2021)

Professor Pavel L. Kirillov has died on October 8th, 2021, on his 95th year after a life as a husband, father, and an internationally renowned scientist, researcher, and educator in the field of nuclear engineering, thermalhydraulics, heat transfer, and two-phase flow. He was a passionate and dedicated in everything, what he has done and leaves an incredible legacy to the profession. He was born on August 20th, 1927 in Russia, and received his M.A.Sc. degree in thermal physics in 1950 (Moscow Power-Engineering Institute (MPEI) (МосковскийЭнергетическйИнститут (МЭИ)), Faculty of Physics and Power Engineering (Физико-ЭнергетическийФакультет), Ph.D. and Doctor of Technical Sciences degrees in 1959 and 1969, respectively. Professor Pavel Leonidovich Kirillov was a respected technical leader, mentor, and friend to innumerable students, researchers, scientists, and engineers, and he will be sadly missed by all, who had the privilege to know him. He was an outstanding contributor in every aspect of his prolific work and career in the true traditions of technical excellence and critical thinking, and his irreplaceable loss is deeply felt worldwide.

Validation of Doppler Temperature Coefficients and Component Power Distribution for the Advanced Neutronics Component Program KYLIN V2.0

This work is interested in verifying and analyzing the advanced neutronics assembly program KYLIN V2.0. Assembly calculations are an integral part of the two-step calculation for core design, and their accuracy directly affects the results of the core physics calculations. In this paper, we use the Doppler coefficient numerical benchmark problem and CPR1000 AFA-3G fuel assemblies to verify and analyze the advanced neutronics assembly program KYLIN V2.0 developed by the Nuclear Power Institute of China. The analysis results show that the Doppler coefficients calculated by KYLIN V2.0 are in good agreement with the results of other well-known nuclear engineering design software in the world; the power distributions of AFA-3G fuel assemblies are in good agreement with the results of the RMC calculations, it’s error distribution is in accordance with the normal distribution. It shows that KYLIN V2.0 has high calculation accuracy and meets the engineering design requirements.

Editorial Message to Journal Readers

The ASME Journal of Nuclear Engineering and Radiation Science (https://asmedigitalcollection.asme.org/nuclearengineering) celebrates its seventh year (our first issue was published in January of 2015). On this occasion, I would like to congratulate all members of our Journal Board, reviewers (their names are listed at the end of this greeting), authors, and readers with this date! Year 2021 was quite challenging again to everybody and to our Journal as well due to continuous spreading of the coronavirus around the world, quarantine measures, working from home, etc. Also, unfortunately, many nuclear-engineering / radiation-science conferences were cancelled, moved to next year, or conducted virtually. Therefore, we would like to invite authors from these conferences to submit their augmented and revised papers to our Journal with the objective to publish as soon as possible their valuable research / technical results. We pay special attention to papers from young scientists, researchers, engineers, and students to be sure that we will have smooth transition from one generation of nuclear experts to another. As such, in addition to regular papers from young specialists, we have managed to prepare a Special Issue (SI) with selected papers from the International Youth Nuclear Congress (IYNC) 2020 (Sydney, Australia), and plan to have several similar SIs in the near future. During our seventh year, we have published four issues electronically and as hard copies (as planned, always on time or ahead of a schedule) with about 100 papers including two Special Issues with selected augmented and revised papers.

The Asme Nuclear Engineering Division Celebrates the 7th Year of the Journal

The ASME Nuclear Engineering Division (NED), the sponsoring organization for both the creation of the Journal of Nuclear Engineering and Radiation Science and key supporter of Professor Igor Pioro as the Editor-in-Chief of the Journal, is delighted to note that the journal has been successfully publishing high impact technical articles for the benefit of the nuclear community since 2015. In keeping with the NED support of the Journal, and of course NED policy to implement and complement the position and practices of the American Society of Mechanical Engineers, the NED is acting to tailor its organization to better serve the needs of both. Recently the NED Executive Committee (EC) voted to create a flexible and dynamic organizational structure capable of providing timely and comprehensive support for nuclear engineering-related conferences and summits. A major ingredient in the NED organization are NED-lead technical committees focused on current developments and industry-related topics that support the nuclear community, for example centered on advanced reactors, thermal-hydraulics (including computational fluid dynamics as well as verification and validation), and codes and standards, etc. The focus areas for the technical committees are reflected in the track content of the NED sponsored International Conference On Nuclear Engineering (ICONE) each year. The administrative committees will focus on the organization of conferences/meetings as well as the administrative needs of NED. Presently the NED co-sponsors the Small Modular and Micro Reactor Summit (SMMR), and Advanced Clean Energy Summit (ACES) in addition to sponsoring ICONE.

Development of Alternative Method for Manufacturing Structural Zirconium Elements for Nuclear Engineering

Zirconium is used as a structural material for use in aggressive environments, including the core of nuclear reactors. The traditional technology of manufacturing the structural elements of zirconium nuclear reactors is characterized by a long technological process and a significant amount of waste in the form of metal shavings. The paper presents the results of an alternative technology, spark plasma sintering, for manufacturing zirconium products. A complex of microstructural and mechanical studies of the obtained samples was carried out according to the ASTMB-351 standard. The sintering of zirconium powder and options for subsequent processing by various methods, including non-standard ones such as radial shear rolling, are justified.

The Study of the Metal’s Flow Distribution during Rolling in Cutout Strikers for Different Schemes of the Stress State

In the forging industry, rolling is used to produce ring forgings, which are widely used in power and nuclear engineering. According to the technical conditions and established practice, large ring forgings are made using the operations of precipitation, piercing and rolling out with a striker on the mandrel.