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Keywords: decommissioning
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Proceedings Papers

Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T12A016, August 4–6, 2021
Paper No: ICONE28-64246
... injection. During this dry period, in-vessel and ex-vessel debris were heat up and it took another four days to re-flood the heated up debris. severe accident Fukushima Daiichi nuclear power plant unit 3 ex-vessel debris dryout re-flooding decommissioning Proceedings of the 2021 28th...
Proceedings Papers

Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T12A015, August 4–6, 2021
Paper No: ICONE28-64193
...Abstract Abstract Decommissioning of the Fukushima Daiichi nuclear power station (NPS) is an unprecedented effort in which the entire plant was contaminated with radioactive materials from the accident and radiation dose levels were not low. The decommissioning workers in these sites...
Proceedings Papers

Proc. ASME. ICONE28, Volume 4: Student Paper Competition, V004T14A049, August 4–6, 2021
Paper No: ICONE28-64510
... formed in the reactor pressure vessel (RPV) and primary containment vessel (PCV). The Japanese Government has drawn a mid- and long-term roadmap towards 1F decommissioning. However, three reactors’ decommissioning work has faced difficulties due to the lack of realistic information about the damaged...
Proceedings Papers

Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T12A027, August 4–6, 2021
Paper No: ICONE28-64540
... accident; MPS method; Fukushima when relocating to the pedestal following Reactor Pressure Daiichi Nuclear Power Plant; decommissioning Vessel (RPV) failure. NOMENCLATURE To deepen our understanding for the current debris status in C Corrective matrix the pedestal region of Unit-3, detailed simulation...
Proceedings Papers

Proc. ASME. ICONE28, Volume 3: Computational Fluid Dynamics (CFD); Verification and Validation; Advanced Methods of Manufacturing (AMM) for Nuclear Reactors and Components; Decontamination, Decommissioning, and Radioactive Waste Management; Beyond Design Basis and Nuclear Safety; Risk Informed Management and Regulation, V003T11A008, August 4–6, 2021
Paper No: ICONE28-64203
... Proceedings of the 2021 28th International Conference on Nuclear Engineering ICONE28 August 4-6, 2021, Virtual, Online ICONE28-64203 THE DEVELOPMENT STATUS OF DECOMMISSIONING TECHNOLOGY OF NUCLEAR FACILITIES: AN INSIGHT FROM PATENTS Yading Zhang1, Dan Mo1, Ran Su1, Haoliang Zhong1 1China Institute...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T04A007, August 4–5, 2020
Paper No: ICONE2020-16414
... rod blades are comprised of a stainless steel sheath, which contains neutron absorber tubes (filled with boron carbide powder). During decommissioning, the first stage of size reduction consists of cutting the connector (bottom portion) of the control rod, while the second stage consists of separating...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T04A008, August 4–5, 2020
Paper No: ICONE2020-16423
...MEASUREMENT OF THERMAL DECOMPOSITION TEMPERATURE AND RATE OF SODIUM HYDRIDE Munemichi Kawaguchi1 1Japan Atomic Energy Agency, Tsuruga, Fukui-Pref., Japan ABSTRACT In decommissioning sodium-cooled fast reactors, the operators can be exposed to radiation during dismantling of cold trap equipment (C/T...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T04A015, August 4–5, 2020
Paper No: ICONE2020-16978
... of International Research Institute for Nuclear Decommissioning (IRID), has developed several devices and has investigated inside of PCV. The investigation devices for unit 2 are roughly categorized into three types. For the investigations in early stages, just a camera and sensors with simple support tools were...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T04A004, August 4–5, 2020
Paper No: ICONE2020-16160
... is used. These technologies can effectively reduce the radiation safety risk of personnel during laser scanning in high-radioactive places, reduce the intensity of personnel operations, and improve work efficiency. decommissioning laser 3D scanning data splicing mobile intelligent recognition...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 1: Beyond Design Basis; Codes and Standards; Computational Fluid Dynamics (CFD); Decontamination and Decommissioning; Nuclear Fuel and Engineering; Nuclear Plant Engineering, V001T04A005, August 4–5, 2020
Paper No: ICONE2020-16181
... by the Mitsubishi Research Institute (Georges et al. 2017). The objective is to obtain quantified data for evaluating the risk of disseminating contamination when implementing cutting tools such as laser or others such as mechanical one, over the next few years, in the process of decommissioning the damaged...
Proceedings Papers

Proc. ASME. ICONE2020, Volume 2: Nuclear Policy; Nuclear Safety, Security, and Cyber Security; Operating Plant Experience; Probabilistic Risk Assessments; SMR and Advanced Reactors, V002T08A048, August 4–5, 2020
Paper No: ICONE2020-16707
...Abstract Abstract Decommissioning of the Fukushima Daiichi nuclear power station is challenging due to industrial and chemical hazards as well as radiological ones. The decommissioning workers in these sites are indicated to wear Personal Protective Equipment (PPE) appropriately for radiation...
Proceedings Papers

Proc. ASME. ICONE21, Volume 5: Fuel Cycle, Radioactive Waste Management and Decommissioning; Reactor Physics and Transport Theory; Nuclear Education, Public Acceptance and Related Issues; Instrumentation and Controls; Fusion Engineering, V005T08A013, July 29–August 2, 2013
Paper No: ICONE21-15941
... already. The Jinan MNSR decommissioning documents were approved by Chinese competent authorities in Dec. 2010. The work on site was started in Jan. 2011, and completed in March 2011, the wastes were removed from the Jinan MNSR site. The decommissioning scope of JiNan MNSR includes decommissioning of its...
Proceedings Papers

Proc. ASME. ICONE10, 10th International Conference on Nuclear Engineering, Volume 1, 845-850, April 14–18, 2002
Paper No: ICONE10-22382
... As for a decommissioning job in Japan decontamination and dismantling including safety store are executed during the prior period of the total project. The reprocessing and disposal of dismantling wastes as well recycling is to be practiced during the succeeding period. An expert system proposed...
Proceedings Papers

Proc. ASME. ICONE12, 12th International Conference on Nuclear Engineering, Volume 2, 701-705, April 25–29, 2004
Paper No: ICONE12-49372
... A decommissioning program “RECYCLE SIMULATOR” should be put into practice in careful consideration of both recycle of non-radioactive wastes and reduce of radioactive wastes in the coming circulatory social system. Nevertheless current support systems for decommissioning planning mainly deal...
Proceedings Papers

Proc. ASME. ICONE14, Volume 5: Safety and Security; Low Level Waste Management, Decontamination and Decommissioning; Nuclear Industry Forum, 485-494, July 17–20, 2006
Paper No: ICONE14-89451
... Plasma torch cutting Oxyacetylene arc sectioning Very small dust Decommissioning Aerosol Hot cutting experimental campaign Environmental effects Proceedings of ICONE 14 International Conference on Nuclear Engineering July 17-20, 2006, Miami, Florida, USA AB Nuc plas perf coo 870 ope that cam...