scholarly journals Quality assurance program of a nuclear facility

2019 ◽  
Vol 97 ◽  
pp. 03015
Author(s):  
Dmitriy Leybman ◽  
Tatiana Khripko
Keyword(s):  
Quality Assurance ◽  
Nuclear Power ◽  
Atomic Energy ◽  
Nuclear Power Engineering ◽  
Quality Assurance Program ◽  
Nuclear Facility ◽  
Nuclear Facilities ◽  
Regular Control ◽  
Construction Works

Quality Assurance Program (QAP, Program) is a standard, which regulates and coordinates activity, as well as determines quality assurance policy regarding services rendered and construction works conducted on nuclear infrastructure facilities. The Program must comply with the requirements of federal rules and regulations in the field of nuclear power engineering. The present QAP is available to all organisation employees carrying out works and rendering services during construction, reconstruction and major repairs of nuclear facilities as well as to experts conducting works and rendering services on a contract basis. The QAP implementation analysis and the evaluation of its results is conducted through internal audits. The implementation of the quality assurance program is provided through the following principles: – the responsibility for quality assurance when conducting actual works and rendering services is imposed upon the task performer; – precise segregation of duties and responsibilities between all contractors; – regular control of compliance with regulations and developer’s requirements, as well as accurate documentation of the monitoring results; – systematic update tracking for all official regulations and norms; – the quality assurance methods incorporate the classification of equipment, systems and installation in terms of their impact on safety of nuclear facilities approved by official rules and regulations in the atomic energy sector.

Codes, Standards and Regulatory Topics for Nuclear Facilities

2008 ◽  
Author(s):  
Taunia Wilde ◽  
Shannan Baker ◽  
Gary M. Sandquist
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Regulatory Commission ◽  
Department Of Energy ◽  
Quality Assurance Program ◽  
Nuclear Facilities ◽  
The Us ◽  
Regulatory Commission

The design, construction, operation, maintenance, and decommissioning and decontamination of nuclear infrastructure particularly nuclear power plants licensed in the US by the US Nuclear Regulatory Commission (NRC) or operated by the US Department of Energy (DOE) or the US Department of Defense (DOD) must be executed under a rigorous and documented quality assurance program that provides adequate quality control and oversight. Those codes, standards, and orders regulate, document and prescribe the essentials for quality assurance (QA) and quality control (QC) that frequently impact nuclear facilities operated in the US are reviewed and compared.

scholarly journals A Quality Assurance Protocol for Radiocarbon Dating Laboratories

Radiocarbon ◽  
1990 ◽  
Vol 32 (3) ◽  
pp. 393-397 ◽  
Author(s):  
Austin Long
Keyword(s):  
Quality Assurance ◽  
International Atomic Energy Agency ◽  
Radiocarbon Dating ◽  
Reliable Data ◽  
Atomic Energy ◽  
Quality Assurance Program ◽  
Energy Agency ◽  
Highly Sensitive ◽  
The World

The purpose of this Quality Assurance (QA) protocol is to summarize guidelines that have been accepted by directors of many radiocarbon dating laboratories throughout the world, and by the International Atomic Energy Agency (IAEA). Some laboratories have followed similar procedures successfully for years. Laboratories that carefully adhere to this protocol will produce consistently reliable data that will be comparable in accuracy to all other laboratories following this or any other equally rigorous quality assurance program. This statement does not, however, pertain to samples with 14C activities highly sensitive to method or degree of pretreatment, as pretreatment techniques vary among laboratories.

scholarly journals The IAEA 14C Intercomparison Exercise 1990

Radiocarbon ◽  
1992 ◽  
Vol 34 (3) ◽  
pp. 506-519 ◽  
Author(s):  
Kazimierz Rozanski ◽  
Willibald Stichler ◽  
Roberto Gonfiantini ◽  
E. M. Scott ◽  
R. P. Beukens ◽  
...  
Keyword(s):  
Quality Assurance ◽  
International Atomic Energy Agency ◽  
Atomic Energy ◽  
Quality Assurance Program ◽  
Joint Effort ◽  
Energy Agency ◽  
Natural Materials ◽  
Intercomparison Exercise ◽  
Consensus Values

As a follow-up to the meeting of experts convened at the International Atomic Energy Agency (IAEA) in February 1989, and the International 14C Workshop held in Glasgow in September 1989, the 14C Quality Assurance Program was formulated. In a joint effort of several radiocarbon teams and IAEA staff, we have prepared a set of five new intercomparison materials. These are natural materials frequently used by radiocarbon laboratories. The materials were distributed to 137 laboratories in May 1990. In February 1991, a meeting of experts was convened in Vienna to evaluate the results, to determine the radiocarbon activity of the five samples expressed in % Modern (pMC) terms and to define the 13C/12C ratio, and to make recommendations on further use of these materials. We present here the results of the exercise and the agreed consensus values for each of the five materials and discuss the different analyses that were undertaken.

Development of Nuclear Facilities Piping Cleaning System Using Microbubble

2011 ◽  
Author(s):  
Jongseon Jeon ◽  
Sangchul Lee ◽  
Haksoo Kim ◽  
Byoungsub Han ◽  
Wisoo Kim
Keyword(s):  
Nuclear Power ◽  
Life Time ◽  
Radioactive Wastes ◽  
Nuclear Facilities ◽  
Experimental Conditions ◽  
Legal Standards ◽  
Cavitation Phenomenon ◽  
Cleaning Solution ◽  
Micro Bubble

It removes radioactive sludge and corrosion products deposited on the inner walls of the pipes and valves in replacement or decommission, upon termination of life time, of nuclear power plant or nuclear facility. It lowers a cost of waste treatments taking advantage of a reduction of quantity of radioactive wastes by treating in classification of the radioactive wastes whose activities are lower than legal standards. The cleaning or decontamination methods developed until now have induced a damage on systems while being operated. A decontamination has been restrained if it was difficult to access physically. We are in development of the cleaning technique for pipelines by utilizing micro-bubbles in order to improve an efficiency and to prevent from any damage of systems. It aims to conduct a decontamination for spaces difficult to access there by applying cavitation phenomenon that is generated in collapse of micro-bubbles. In order to improve an efficiency of the micro-bubble device, the experimental conditions suitable to decontamination have been established and the auxiliary equipments have been added. The generation conditions and characteristics of micro-bubbles have been demonstrated by adjusting pHs and temperatures of cleaning solution. A decontamination effect has been confirmed by adding up an electrolytic method and ozone into micro-bubbles.

scholarly journals Quality assurance program for Angra 1 licence renewal and long-term operation

2021 ◽  
Vol 9 (2B) ◽  
Author(s):  
YOUSSEF MORGHI ◽  
Amir Zacarias Mesquita ◽  
Ana Rosa BALIZA MAIA
Keyword(s):  
Quality Assurance ◽  
Nuclear Power ◽  
Nuclear Regulatory Commission ◽  
Quality Assurance Program ◽  
Term Operation ◽  
Safety Requirements ◽  
Plant Safety ◽  
Regulatory Commission ◽  
License Renewal

In Brazil, according to Cnen standard, a nuclear power plant has authorization to operate for 40 years. Angra 1 commercial operation started in 1985 and it has license to operate until 2024. Eletronuclear aims to extend the operation of the Angra 1 plant from 40 to 60 years. To obtain the license renewal by more than 20 years (long-term operation), Eletronuclear will need to meet the requirements of 10 CFR Part 54, Cnen NT-CGRC-007/18 and NT-CGRC-008/18 (Cnen technical notes). To obtain a license renewal to a long-term operation it is necessary to demonstrate that the plants will operate according to safety requirements, through analysis, testing, aging management, system upgrades, as well as additional inspections. Plant operators and regulators must always ensure that plant safety is maintained and, when it is possible, strengthened during the long-term operation of the plant. One of the documents to obtain a license renewal to a long-term operation is the Quality Assurance Program (QAP). Angra 1 has a QAP according to 10CFR 50 App B and Cnen NN 1.16 for safety related items. However, according to 10 CFR50.34, Nureg-1800 Appendix A.2, Nureg-1801 Appendix A-1 of Nuclear Regulatory Commission (NRC) and NT-CGRC-007/18 and NT-CGRC-008/18 of Cnen, the QAP needs to include the items that are not safety related but are included in the Aging Management. This article will discuss the Angra 1 QAP for the license renewal to a long-term operation according the standards approved by Cnen.

scholarly journals Colorimetric Method for Detection of Hydrazine Decomposition in Chemical Decontamination Process

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3967
Author(s):  
Jungsoon Park ◽  
Hee-Chul Eun ◽  
Seonbyeong Kim ◽  
Changhyun Roh ◽  
So-Jin Park
Keyword(s):  
Nuclear Power ◽  
Colorimetric Assay ◽  
Low Cost ◽  
Colorimetric Method ◽  
High Sensitivity ◽  
Nuclear Facility ◽  
Nuclear Facilities ◽  
Chemical Decontamination ◽  
Colorimetric Response ◽  
Hydrazine Decomposition

The aim of nuclear facility decommissioning is to make local settlements safe, sustainable and professedly acceptable. The challenges are the clean-up of the nuclear site and waste management. This means a definite promise in terms of safety and security, taking into account social and environmental accountability. There is an essential need to develop safe and efficient methods for nuclear decommissioning. Thus, chemical decontamination technology is of great significance to the decommissioning of nuclear energy facilities. In particular, chemical decontamination technology is applicable to the pipelines and internal loop. The iron-rich oxides, such as Fe3O4 or NiOFe2O3, of a nuclear power plant should have sound decontamination follow-through and should put through a very small amount of secondary waste. It is important to be able to detect and quantify hydrazine in decontamination situations with high sensitivity and selectivity. A colorimetric assay is a technique used to determine the concentration of colored compounds in a solution. However, detecting targeted species rapidly and easily, and with high sensitivity and specificity, is still challenging. Here, the catalytic reaction of oxidants in the p-dimethylaminobenzaldehyde and hydrazine reaction is elucidated. Oxidants can catalyze the reaction of hydrazine and p-dimethylaminobenzaldehyde to form an azine complex such as p-dimethylaminobenzaldazine, with high selectivity and sensitivity within 30 min at ambient temperatures. In the absence of an oxidant such as iron or hydrogen peroxide no detectable colorimetric change was observed by the reaction of p-dimethylaminobenzaldehyde and hydrazine unless an external oxidant was present in the system. In this study, we demonstrated a colorimetric method for the sensitive detection of hydrazine decomposition in the chemical decontamination process. Furthermore, the colorimetric response was easy to monitor with the unaided eye, without any sophisticated instrumentation. This method is thus suitable for on-site detection of contamination in a nuclear facility. In addition, this colorimetric method is convenient, non-invasive, free of complex equipment, and low-cost, making it possible to analyze hydrazine in industrial nuclear facilities. The proposed method was successfully applied to the determination of hydrazine decomposition in the nuclear decontamination process.

scholarly journals Decommissioning: a problem or a challenge?

2004 ◽  
Vol 19 (2) ◽  
pp. 65-73
Author(s):  
Irena Mele
Keyword(s):  
Power Plant ◽  
Nuclear Power Plant ◽  
Waste Management ◽  
Nuclear Power ◽  
Research Reactor ◽  
Management Programme ◽  
Financial Resources ◽  
Uranium Mine ◽  
Nuclear Facility ◽  
Nuclear Facilities

With the ageing of nuclear facilities or the reduced interest in their further operation, a new set of problems, related to the decommissioning of these facilities, has come into forefront. In many cases it turns out that the preparations for decommissioning have come too late, and that financial resources for covering decommissioning activities have not been provided. To avoid such problems, future liailities should be thoroughly estimated in drawing up the decommissioning and waste management programme for each nuclear facility in time, and financial provisions for implementing such programme should be provided. In this paper a presentation of current decommissioning experience in Slovenia is given. The main problems and difficulties in decommissioning of the Zirovski Vrh Uranium Mine are exposed and the lesson learned from this case is presented. The preparation of the decommissioning programme for the Nuclear Power Plant Krsko is also described, and the situation at the TRIGA research reactor is briefly discussed.

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