logo
* 搜尋
* 核能資訊中心
* 中心簡介
* 相關資訊
* 瀏覽人數
今天: 18832
昨天: 21238
本月: 348668
總計: 1140877
發表人 nicenter 於 2019/2/15 13:56:22 (7 人讀取)

NRC terminates US MOX plant authorisation


The US Nuclear Regulatory Commission (NRC) has granted a request by CB&I Areva MOX Services (MOX Services) to terminate the construction authorisation for the partially built mixed-oxide (MOX) fuel fabrication facility at Savannah River in South Carolina.




(Image: MOX Services)

NRC-regulated construction activities at the facility ceased in October 2018, when the National Nuclear Security Administration (NNSA) - a semi-autonomous agency of the US Department of Energy (DOE) - issued a contract termination notice to the consortium. MOX Services subsequently requested the NRC terminate the construction authorisation in a letter dated 1 November.


The facility had been intended to dispose of 34 tonnes of weapons-grade plutonium by turning it into fuel for commercial nuclear reactors. A contract to design, build and operate the facility - also known as the MFFF - was awarded to the Shaw Areva MOX Services consortium (now CB&I Areva MOX Services) in 1999. The plant itself is owned by the DOE/NNSA.


Under NRC licensing regulations, the two-stage approvals process for the facility consisted of the construction authorisation, and a licence to possess and use special nuclear materials. The construction authorisation was issued in March 2005, and construction began in 2007 with the plant originally due to start operation in October 2016. NRC staff reviewed the application for the licence to possess and use nuclear materials, and in 2010 issued a final safety evaluation report concluding that the operation of the facility would not pose an undue risk for public or worker health and safety. However, NRC regulations stipulate that approval of a licence for a plutonium processing and fuel fabrication plant cannot be issued until the plant itself has been constructed in accordance with the construction authorisation, so the licence has not yet been issued.


Terminating a licence would normally require an environmental assessment, but the NRC said that as the construction of the facility was never completed and no nuclear material had ever been brought on site, no environmental assessment was necessary in this case. NRC staff likewise determined that no decommissioning actions are required to terminate the construction authorisation, and determined that a "sufficient basis" exists to terminate the authorisation. The site can be released for unrestricted use immediately, as there is no radiological contamination associated with the authorisation, the NRC said.


The MFFF was being built as part of a 2000 agreement with Russia whereby each country would dispose of 34 tonnes of weapons-grade plutonium. The timescale - and costs - of constructing the plant increased: in May 2017 total costs for the project were estimated at USD10 billion, more than double the original estimate of USD4.9 billion. In early 2016 the DOE sought to terminate the project, and in May 2018 US Energy Secretary Rick Perry notified Congress that he was executing a waiver to end construction of the facility. He said the DOE will now pursue a "dilute and dispose" option for the 34 tonnes of plutonium, which will ultimately be disposed of at the Waste Isolation Pilot Plant in New Mexico.


The MFFF was about 70% complete when work terminated, with some of the equipment on site. As of January 2018, 92% of structural concrete and 94% of rebar had been placed, 29 of 31 active gallery modules had been installed, and 12 of 16 support buildings were complete.


Researched and written by World Nuclear News



source: http://www.world-nuclear-news.org/Articles/NRC-terminates-US-MOX-plant-authorisation


更多內容 國際核能現況

發表人 nicenter 於 2019/2/15 13:21:15 (14 人讀取)

低放(蘭嶼)貯存場今日(108年2月14日)因突發電力線路問題造成停電,預計今日維修完畢,原能會持續監控貯存場輻射安全。


低放(蘭嶼)貯存場今日(108年2月14日)因突發電力線路問題造成停電,預計今日維修完畢,原能會持續監控貯存場輻射安全,受影響區域如下:


•日期時間:108年2月14日

•影響區域:

環境輻射監測站編號501、502、503之監測數據仍持續記錄,惟數據即時傳送網路功能受影響。


台電公司應本會要求,其所屬核設施之即時輻射監測站已有不斷電系統,以確保監測數據紀錄不中斷。在此期間,本會於貯存場周圍的環境輻射即時監測站仍持續嚴密監控貯存場輻射安全。



source: https://www.aec.gov.tw/newsdetail/headline/4766.html


更多內容 核能新聞

發表人 nicenter 於 2017/6/14 9:29:38 (246 人讀取)

原能會收到台電公司依「核子反應器設施停止運轉後再起動管制辦法」所提出之核二廠1號機起動後併聯申請,經審查相關申請文件,並整合起動過程間各項現場視察結果,確認機組運作狀態符合併聯要求,於今日19時25分同意核二廠1號機可併聯發電。

閱讀全文... | 786字符 (含本文)

更多內容 核能簡訊

發表人 nicenter 於 2016/12/12 16:01:22 (988 人讀取)

PDF檔內共有6篇有關核四的文章,是由多位旅美的核能專家共同撰寫,希望提供國內民眾更多客觀、中立的核能專業資訊。


更多內容 核四公投

發表人 nicenter 於 2007/3/23 9:54:35 (2511 人讀取)

『輻射意外緊急醫療處理國際研討會』

主辦單位:三軍總醫院

日期:2007年5月25-26日

聯絡人:
三軍總醫院 核子醫學部
林立凡、徐詩婕
電話:02-87923311-16704、16712


研討會海報

官方網站連結



 線上期刊目錄

 友善連結

單位類

行政院原子能委員會
原能會輻務小站臉書
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 北育成三樓309室 電話:(03)571-1808 傳真:(03)572-5461 Email: nicenter[@]nicenter.org.tw