Leslie Dewan on CNN's Global Public Square: Waste Annihilating Molten Salt Reactor (WAMSR)

IAEA 6th INPRO Forum on Licensing and Safety Issues for SMRs - 29 July - August 2, 2013

The subject of the 6th INPRO (International Project on Innovative Reactors and Fuel Cycles) Dialogue Forum organized by the International Atomic Energy Agency (IAEA) in Vienna from July 29th to August 2nd 2013 was Licensing and Safety Issues for Small and Medium-Sized Reactors, (SMRs) one of this blog's favorite topics. (The 3rd INPRO Dialogue Forum, held 14-18 November 2011, was also on SMRs, with the title "Common User Considerations for Small and Medium-sized Nuclear Power Reactors").

Dr. David Newland of the Canadian Nuclear Safety Commission was the Program Chair, with Poong-Eil Juhn of the Republic of Korea as Co-Chair. After an Opening and Introductory session, the second Session was on Experiences and Preparation for SMR Deployment, in which 8 Member States (MSs) of the IAEA - in alphabetical order: Canada, China, France, India, Japan, Republic of Korea, the Russian Federation and the USA presented the status of their national licensing and safety programs for SMR licensing. There were two presentations from the USA - one each from the Department of Energy (USDOE) and the Nuclear Regulatory Commission (USNRC).

This was followed by a Panel Discussion on Licensing and Safety Issues for SMRs (with Dr. David Newland of Canada, R. Seban of France, M. Ricotti of Italy, S-H Rhee of Korea, and I. Bylov of the Russian Federation as panelists). The conferees then broke out into 5 groups whose topics the organizers had circulated beforehand: (1) Designs; (2) Siting ; (3) Graded Approach in regulatory and licensing process; (4) Legal (5) Public Participation, each of which was briefed by their Group Leader in Session 3, prior to breakout. Session 4 was devoted to presentations from International Organizations: ASME, OECD-NEA, WENRA, and WNA.

In Session 5, the Group Leaders of the Breakout Sessions reported back (1. Soderholm, 2. deVos, 3. Ramakrishna  and 4. Magruder), and Session 6 concluded with reports from:  Mr. M.H. Subki of the IAEA on the questionnaire distributed to participants, Dr. Daniel Ingersoll on a summary of the plenary sessions; a Meeting Summary by the Program Chair Dr. David Newland; and a final word each from Z. Drace of INPRO and J.K. Park of the NENP/IAEA.

The final report on the 6th INPRO Dialogue Forum on Licensing and Safety Issues for SMRs is available here.

(The IAEA also held a Technical Meeting on SMR Technology Development for Near-Term Deployment in Chengdu, China - September 2-4, 2013, and a Technical Meeting on Instrumentation & Control in Advanced SMRs, 21-24 May 2013.)

 

USDOE Issues Funding Opportunity Announcement for SMRs

The US Department of Energy (USDOE) issued a draft Funding Opportunity Announcement (FOA) this week, intended to support activities related to the design and licensing of Small Modular Reactors (SMRs), defined as reactors with an electric output of 300MWe or less; which can be manufactured remotely, transported to point of construction, with on-site assembly largely limited to system integration of components for operation.

Importantly, the USDOE is interested in designs with passive safety (e.g., against consequences of a nuclear accident) as well as inherent safety (e.g., against natural catastrophes such as earthquakes, windstorms or floods), in addition to designs with long inter-refueling periods, low capital cost outlays, low maintenance and operating costs, and high proliferation resistance. The stated intention is to support up to 2 reactor designs through the USNRC design and licensing process, with the ability to be deployed ‘expeditiously’ being an important merit criterion. 2022, a decade from now, is the target year for commercial operation.

Proponents may choose to pursue licensing from the USNRC under either 10 CFR 50 or 10 CFR 52. Stakeholders are encouraged to form consortia, and proponents are encouraged to form design-centered working groups (DCWGs) across the supply and value chains e.g., SMR manufacturers, power utilities, local bodies; and the activities funded by USDOE are required to draw at least 50% of their total resources required, from internal sources. The total amount of funding available from USDOE is estimated to be $452 M, subject to Congressional appropriations. The current draft FOA will be issued in final form after feedback from, and consultation with, stakeholders.

NRC Seeks Prompt Action on Fukushima Near-Term Task Force Recommendations

The US Nuclear Regulatory Commission today directed its staff to complete several actions over the next 45 days in response to the 12 recommendations of its Near-Term Task Force on the Fukushima Nuclear Accident, which submitted its report on July 12.

The Commission has asked the staff to produce a paper by September 9, outlining which of the recommendations 2-12 (recommendation 1 was that the entire regulatory framework be holistically reviewed) should be implemented immediately, including a public dialogue on the process, the schedule for which will be announced soon. It has also asked the staff to produce, by October 3, another paper prioritizing recommendations 2-12, explaining the rationale, and also engaging both the public and other stakeholders. Over the next 18 months, the staff will consider recommendation 1, to review the entire regulatory framework, balancing risk -informed regulation, and defence-in-depth considerations.

International Topical Meeting on Probabilistic Safety Analysis - PSA 2011

The International Topical Meeting on Probabilistic Safety Analysis (PSA 2011), sponsored by the American Nuclear Society and Sandia National Laboratories, along with a variety of commercial sponsors, will be underway next week in Wilmington, North Carolina from March 13 to March 17, 2011. Dr. George Apostolakis of the US NRC is the Honorary Chair of the Organizing Committee, while the Technical Committee has four Co-Chairs, one each from the US, Europe, Japan and Korea.

A truly large number of technical sessions are planned, and include several sessions on PSA of New Reactors from internal initiating events (including a very interesting paper on incorporating PSA principles into fusion reactor design, and papers on both gas-cooled and sodium-cooled fast reactors). Also PSA of a variety of hazards including fire, seismic, and flood; as well as PSA of non-reactor nuclear applications. There are sessions on incorporating digital information & control (I & C) systems into nuclear plant PSA; sessions on dynamic PSA (incorporating the dynamic, i.e., changing aspects of a system in to the probabilistic safety assessment [including a very interesting paper using genetic algorithms to explore the space within the failure domain where at least one safety limit is violated].

Several sessions explore Ageing in PSAs - one very interesting paper interpolates state transition probabilities in a Markov Model for estimating reliability of passive components such as metal pipes using physics-based models of weld degradation, instead of in-service failure data for the entire piping component. The paper finds that incorporating such time-inhomogeneous and stochastic transition rates into the Markov Model causes it to become non-Markov.

Interesting panel discussions are planned on: Alternative Risk Metrics, which will consider, among other things, how the promised lower risk numerics for new reactors will be maintained over their reactor life; and how risk profiles will be affected by multiple units in a suite of SMRs (small modular reactors); PRA Standards Development (which will examine, among other things, how the regulatory endorsement of PSAs as a risk management tool impacts the development of risk informed applications).

The conference brings together practitioners of PSA from a variety of disciplines and countries, and promises to be very interesting indeed.