logo
* 搜尋
* 核能資訊中心
* 中心簡介
* 相關資訊
* 瀏覽人數
今天: 15
昨天: 265
本月: 2069
總計: 534949
國際核能現況 : Pipe robot aids enrichment plant decommissioning
發表人 nicenter 於 2018/3/23 14:11:02 (72 人讀取)

A pair of autonomous robots, developed by Carnegie Mellon University's (CMU) Robotics Institute to characterise uranium deposits in process pipes, could save tens of millions of dollars in decommissioning costs at the USA's former gaseous diffusion enrichment plants.





The RadPiper robot is launched into a pipe (Image: Carnegie Mellon University)

The RadPiper robots will first be deployed at the former Portsmouth gaseous diffusion plant, in Piketon, Ohio, which operated from 1954 to 2001 and contains over 75 miles (120 kilometres) of process pipes. Uranium deposits inside the pipes must be located before facilities can be decontaminated, decommissioned and demolished. Up to now, this has been done by external measurements carried out by human crews. This is both time-consuming and hazardous, with workers needing to wear protective clothing and use scaffolding or lifts to reach elevated pipes.


Each robot is equipped with a 'disc-collimated' radiation sensor invented at CMU, and can measure radiation levels more accurately from inside the pipes than is possible with external techniques, CMU said. The tetherless robot moves through the pipe on a pair of flexible tracks and characterises radiation levels in pipe segments of 1 foot (about 30 centimetres) in length. Segments with potentially hazardous amounts of fissile uranium-235 can then be removed and decontaminated separately. The robot will initially be used in pipes with diameters of 30 inches and 42 inches.


The disc-collimated sensing instrument, for which CMU is seeking a patent, uses a standard sodium iodide sensor to count gamma rays. This is positioned between two large lead discs, which block gamma rays beyond the segment currently being characterised.


"With more than 15 miles of piping to be characterised in the next process building, there is a need to seek a smarter method," Rodrigo Rimando, director of technology development for DOE's Office of Environmental Management, said. "We anticipate labour savings in the order of an eight-to-one ratio for the piping accomplished by RadPiper."


Nuclear deposits will still need to be identified manually in some components, but the DOE estimates the robots could save tens of millions of dollars in completing the characterisation work at Portsmouth. They could also save some USD50 million in costs at the Paducah plant in Kentucky, which is also being decommissioned.


CMU has received USD1.4 million from DOE to develop the robots, working closely with Fluor-BWXT Portsmouth. A prototype has already been tested at the plant, to which the first RadPiper robots will be delivered in May.


Researched and written
by World Nuclear News



source:http://www.world-nuclear-news.org/WR-Pipe--robot-ads-enrichment-plant-decommissioning-2203187.html



其他新聞
2018/8/15 9:37:51 - Chinese AP1000 reaches full power operation
2018/8/15 9:35:29 - Public to comment on Hanford tunnel work
2018/8/15 9:30:49 - Chinese research reactor sets operational record
2018/8/15 9:26:52 - ENEC launches youth council
2018/8/15 9:22:04 - Waste package in place ahead of MSSS clearance
2018/8/13 9:42:09 - NNL, Wood contracted for nuclear fuel research
2018/8/13 9:36:48 - Safety review sought for new Japanese reactor
2018/8/13 9:34:22 - US agencies working on critical plant list
2018/8/13 9:28:20 - 全國首創「雙綠能電廠」 台電首座水上光電站大甲溪啟用
2018/8/10 9:51:46 - Call for UK government to back small nuclear projects
2018/8/10 9:37:07 - Fuqing 5 enters system commissioning phase
2018/8/10 9:34:28 - Progress at Vogtle, but cost forecast rises
2018/8/10 9:30:45 - Pickering relicensed to 2028
2018/8/10 9:20:00 - 台灣電力不足?台電重申無缺電問題 能源轉型兼顧穩供與環保
2018/8/8 11:15:18 - UK SMRs ‘Should Get Same Subsidies As Offshore Wind’, Says Independent Review
2018/8/8 11:12:54 - We Cannot Rely On Variable Renewables Without Nuclear, Says New Research
2018/8/8 11:08:17 - Turbine equipment installed at Leningrad II-2
2018/8/8 11:06:37 - French, British regions unite for nuclear growth
2018/8/6 10:44:50 - CEZ to test use of Westinghouse fuel at Temelin-1
2018/8/6 10:38:29 - First nuclear plant visit for Perry

 線上期刊目錄

 友善連結

單位類

行政院原子能委員會
放射性物料管理局
核能研究所
國立清華大學工程與系統科學系
國立清華大學生醫工程與環境科學系
中華民國核能學會
財團法人核能科技協進會

新聞類


30013 新竹市光復路二段101號 創新育成中心三樓309室 電話:(03)571-1808 傳真:(03)572-5461 Email: nicenter@nicenter.org.tw