NDT for Characterizing Ageing and Degradation of Nuclear Power Plant Materials - Fatigue and Irradiation

2017 ◽  
Author(s):  
Gerd Dobmann
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Plant Materials

Determination of effective standards for the introduction of fodder additive Aquatan in the diet of rainbow trut with a biological assessment of the influence on fisheries

2021 ◽  
pp. 66-78
Author(s):  
Dmitry Dmitrievich Zekov ◽  
Mikhail Vladimirovich Ulyanov ◽  
Daniil Veniaminovich Mikryakov ◽  
Tatyana Alexandrovna Suvorova
Keyword(s):  
Rainbow Trout ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Feed Additive ◽  
Average Weight ◽  
Leningrad Region ◽  
Plant Materials ◽  
Wide Range ◽  
Mass Accumulation

In connection with the global tendency to prohibit the use of antibiotics in animal husbandry, the prospect of using in ichthyopathological practice preparations from plant materials, which are mostly non-toxic, rarely cause side effects, have an antibacterial effect against a wide range of pathogens of bacterial diseases, opens up. One of these preparations is the feed additive Aquatan (Farmatan Aqua) based on ellagitannins from sweet chestnut wood manufactured by Tanin Sevnica (Slovenia). The aim of this work was to study the effect of different dosages of Aquatan on the survival rate, the rate of mass accumulation and the growth rate of rainbow trout reared in the industrial conditions of the cage farm on the waste warm waters of the nuclear power plant and to assess the production and economic efficiency of the application. The tests were carried out for 34 days in February-March 2021 on the basis of an aquaculture cage farm of LLC “Fish Federation”, located in the water area of the waste canal of warm waste water of the Leningrad nuclear power plant (LNPP) in the area of the LNPP-2 industrial zone in the city of Sosnovy Bor, Leningrad Region. The object of the study is rainbow trout yearlings brought from different fish farms. A total of 247,131 specimens were planted, with an average weight of 156.5–235.7 g and a total weight of 43 950.67 kg. The main hydrochemical indicators of water at the enterprise for the trial period met the water quality requirements for growing salmon fish OST 15.372-87. The feeding was carried out with the production compound feed for salmonids of the firm Alltech® Coppens Supreme-22. In experimental cages, fish were fed with compound feed with the addition of the preparation Aquatan at various concentrations (1, 2, and 3 g/kg of feed); in the control, feed without additive was used. As a result of the experiment, a positive effect of the Aquatan additive in dosages of 2–3 g / 1 kg of feed on growth, mass accumulation, survival and feed costs was established, while when adding 1 g / 1 kg of feed, such an effect was not recorded.

scholarly journals STUDY OF SUICIDE BEHAVIOR IN JOINT FORCE OPERATION VETERANS IN EASTERN UKRAINE AND IN LIQUIDATORS OF THE CONSEQUENCES OF THE CHORNOBYL ACCIDENT

2020 ◽  
Vol 25 ◽  
pp. 230-248
Author(s):  
I. Pinchuk ◽  
◽  
S. Boltonosov ◽  
N. Atamanchuk ◽  
N. Stepanova ◽  
...  
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Environmental Protection ◽  
Psychosocial Factors ◽  
Suicidal Behavior ◽  
Nuclear Power ◽  
Criminal Proceedings ◽  
Plant Materials ◽  
Joint Force ◽  
The Impact

The article is devoted to the problem of completed suicides among veterans of the Joint Forces for National Security and Defense operation in Donetsk and Luhansk regions (JFO) and liquidators of the consequences of the Chornobyl accident (LCCA). The results of the analysis of surveys of families and close associates of JFO veterans who committed a completed suicide in the period 2014–2019 are presented. The survey was conducted as part of criminal proceedings initiated on the facts of suicide. Objective: to analyze the current dynamics of suicidal behavior in veterans of JFO and the impact of psychosocial factors on its development and compare with the relevant indicators among LCCA at the Chornobyl nuclear power plant. Materials and methods: 175 questionnaires are presented, socio-demographic characteristics are compiled and psychosocial factors that influenced the development of suicidal behavior in environmental protection veterans are identified. An analysis of the status of such studies among liquidators of the Chornobyl accidents. Results: the data analysis of suicidal behavior in veterans of environmental protection, the impact on its development of psychosocial factors and comparison with the indicators among LCCA at the Chornobyl Nuclear Power Plant. Conclusions: The results of the study show that in emergency situations, mostly men from all regions of the country, both professional servicemen and civilians, are involved in its elimination. It has been proven that while performing their official duties, the veterans of JFO and LCCA at the Chornobyl nuclear power plant experienced mental stress. But most of them, returning home, did not seek medical treatment, prevent the development of diseases and their complications and remained for a long time without proper medical, social and psychological care. Key words: completed suicides, suicidal behavior, psychosocial factors, veterans of environmental protection, liquidators of the Chornobyl accident.

The History and Future of NDE in the Management of Nuclear Power Plant Materials Degradation

2008 ◽  
Author(s):  
S. R. Doctor
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nondestructive Evaluation ◽  
Nuclear Power ◽  
Research Work ◽  
Plant Materials ◽  
Engineering Research ◽  
The Future ◽  
Research Studies

The author has spent more than 25 years conducting engineering and research studies to quantify the performance of nondestructive evaluation (NDE) in nuclear power plant (NPP) applications and identifying improvements to codes and standards for NDE to manage materials degradation. This paper will review this fundamental NDE engineering/research work and then look to the future on how NDE can be optimized for proactively managing materials degradation in NPP components.

Microbial-induced corrosion in nuclear power plant materials

JOM ◽  
1989 ◽  
Vol 41 (12) ◽  
pp. 23-27 ◽  
Author(s):  
George J. Licina ◽  
Daniel Cubicciotti
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Plant Materials

Preliminary Discussion on Comparison and Analysis on Nuclear Power Plant Materials Standards of ASME and RCC-M

2010 ◽  
Author(s):  
Dong Ning ◽  
Yongdong Wang ◽  
Hui Li ◽  
Zhanggen Bao
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Nuclear Power ◽  
Plant Materials ◽  
Comparison Results ◽  
Layout Structure ◽  
Asme Code ◽  
Comparison And Analysis

This paper is to compare the sections on materials between ASME-BVC and RCC-M code. This paper states the layout structure and the content about NPP materials specified in the two codes and shows the comparison results. This paper emphasizes particularly on the basic differences between two codes; ASME code focuses on fracture toughness requirements for pressure-retaining ferrite materials and RCC-M code focuses on Susceptibility to intergranular corrosion for austenitic and austenitic-ferrite stainless steel.

Monitoring thermal fatigue damage in nuclear power plant materials using acoustic emission

2012 ◽  
Author(s):  
R. M. Meyer ◽  
P. Ramuhalli ◽  
B. E. Watson ◽  
S. G. Pitman ◽  
T. J. Roosendaal ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Power Plant ◽  
Nuclear Power Plant ◽  
Fatigue Damage ◽  
Thermal Fatigue ◽  
Nuclear Power ◽  
Plant Materials
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