scholarly journals Underwater Laser Cutting of Thick Stainless Steel in Various Cutting Directions for Application to Nuclear Decommissioning

2021 ◽  
Vol 19 (3) ◽  
pp. 279-287
Author(s):  
Jae Sung Shin ◽  
Seong Y. Oh ◽  
Seung-Kyu Park ◽  
Taek-Soo Kim ◽  
Hyunmin Park ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Cutting ◽  
Nuclear Decommissioning ◽  
Underwater Laser

scholarly journals Controlling the kerf properties of underwater laser cutting of stainless steel with 3 mm thickness using an Yb:YAG laser source in nuclear decommissioning processes

Procedia CIRP ◽  
2020 ◽  
Vol 94 ◽  
pp. 493-498
Author(s):  
Jan Leschke ◽  
Benjamin Emde ◽  
Jörg Hermsdorf ◽  
Stefan Kaierle ◽  
Ludger Overmeyer
Keyword(s):  
Stainless Steel ◽  
Laser Cutting ◽  
Laser Source ◽  
Nuclear Decommissioning ◽  
Underwater Laser

Underwater laser cutting of thick stainless steel blocks using single and dual nozzles

2021 ◽  
Vol 136 ◽  
pp. 106757
Author(s):  
Seong Y. Oh ◽  
Jae Sung Shin ◽  
Seungkyu Park ◽  
Taek Soo Kim ◽  
Hyunmin Park ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Cutting ◽  
Underwater Laser

scholarly journals Fundamental Study on Underwater Cutting of 50 mm-Thick Stainless Steel Plates Using a Fiber Laser for Nuclear Decommissioning

2022 ◽  
Vol 12 (1) ◽  
pp. 495
Author(s):  
Kwan Kim ◽  
Moo-Keun Song ◽  
Su-Jin Lee ◽  
Dongsig Shin ◽  
Jeong Suh ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Power ◽  
Laser Cutting ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Cutting Speed ◽  
Cutting Surface ◽  
Focal Position ◽  
Underwater Laser

With nuclear power plants worldwide approaching their design lifespans, plans for decommissioning nuclear power plants are increasing, and interest in decommissioning technology is growing. Laser cutting, which is suitable for high-speed cutting in underwater environments and is amenable to remote control and automation, has attracted considerable interest. In this study, the effects of laser cutting were analyzed with respect to relevant parameters to achieve high-quality underwater laser cutting for the decommissioning of nuclear power plants. The kerf width, drag line, and roughness of the specimens during the high-power laser cutting of 50 mm-thick stainless steel in an underwater environment were analyzed based on key parameters (focal position, laser power, and cutting speed) to determine the conditions for satisfactory cutting surface quality. The results indicated that underwater laser cutting with a speed of up to 130 mm/min was possible at a focal position of 30 mm and a laser power of 9 kW; however, the best-quality cutting surface was obtained at a cutting speed of 30 mm/min.

Experimental investigation of underwater laser cutting for thick stainless steel plates using a 6-kW fiber laser

2021 ◽  
pp. 108896
Author(s):  
Seong Y. Oh ◽  
Jae Sung Shin ◽  
Seungkyu Park ◽  
Sungok Kwon ◽  
Sungmo Nam ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Stainless Steel ◽  
Fiber Laser ◽  
Laser Cutting ◽  
Steel Plates ◽  
Underwater Laser

Deep Gouging Technique for Fuel Debris Retrieval in Fukushima Daiichi

2020 ◽  
Author(s):  
Ioana Doyen ◽  
Christophe Chagnot ◽  
Christophe Journeau ◽  
Emmanuel Porcheron ◽  
Thomas Gelain ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Power ◽  
Laser Cutting ◽  
316L Stainless Steel ◽  
Complex Surface ◽  
Cutting Process ◽  
Site Conditions ◽  
Promising Technology ◽  
Nuclear Decommissioning ◽  
Fukushima Daiichi

Abstract Laser cutting, a contactless remote controlled process, was assessed for nuclear decommissioning applications, in full through-thickness-cutting (emerging cutting) and deep gouging (non-emerging) conditions. This work aims at presenting specific tools developed and implemented at CEA Saclay, to evaluate and to optimize new cutting strategies, in terms of robustness and reliability, in order to best adapt the laser cutting process to fuel debris retrieval specificities of Fukushima Daiichi reactors. Several configurations for deep gouging have been tested in DELIA facility to reach more than 40 mm of cut-thickness in one pass with an 8kW laser power. First, the laser cutting process was assessed on fused cast zirconia blocks and then on 316L stainless steel and fuel debris simulant blocks. This paper presents the main results of the tests performed in representative conditions of “in site conditions” such as: edge or bulk start/stop cutting, complex surface (i.e. surface with a varying topology) cutting, stand-off variation, angle of cut, trajectories misalignment, and material heterogeneity. Moreover, the excellent performances achieved on 316L stainless steel and fuel debris simulants indicate that deep gouging applied to nuclear decommissioning is a promising technology.

Underwater laser cutting of stainless steel up to 100 mm thick for dismantling application in nuclear power plants

2020 ◽  
Vol 147 ◽  
pp. 107655 ◽  
Author(s):  
Jae Sung Shin ◽  
Seong Yong Oh ◽  
Seungkyu Park ◽  
Hyunmin Park ◽  
Taek-Soo Kim ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Laser Cutting ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Underwater Laser

scholarly journals Investigation of Cutting Quality of Remote DOE Laser Cutting in 0.5 mm Stainless Steel

2017 ◽  
Vol 89 ◽  
pp. 164-171
Author(s):  
Sigurd Lazic Villumsen ◽  
Morten Kristiansen
Keyword(s):  
Stainless Steel ◽  
Laser Cutting

Investigation of the piercing process in laser cutting of stainless steel

2017 ◽  
Vol 29 (2) ◽  
pp. 022201 ◽  
Author(s):  
Jetro Pocorni ◽  
John Powell ◽  
Jan Frostevarg ◽  
Alexander F. H. Kaplan
Keyword(s):  
Stainless Steel ◽  
Laser Cutting

Improvement of cutting performance for thick stainless steel plates by step-like cutting speed increase in high-power fiber laser cutting

2018 ◽  
Vol 103 ◽  
pp. 311-317 ◽  
Author(s):  
Sangwoo Seon ◽  
Jae Sung Shin ◽  
Seong Yong Oh ◽  
Hyunmin Park ◽  
Chin-Man Chung ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Fiber Laser ◽  
High Power ◽  
Laser Cutting ◽  
Cutting Speed ◽  
Cutting Performance ◽  
Steel Plates ◽  
Speed Increase
Sign in / Sign up

Export Citation Format

Share Document