The U.S. Nuclear Regulatory Commission (NRC) has moved forward in developing initial regulatory positions on next-generation reactors, and reaffirming the value of its international cooperation efforts.

In support of its December 14th periodic meeting on small modular reactor (SMR) and advanced reactor regulatory reform, the agency has issued two draft papers for which it is soliciting feedback: one on siting considerations, and one on designing containment systems.  This is in addition to a December 13 meeting on physical security, for which the NRC issued a draft paper for review in November.

The draft paper on siting considerations tackles an interesting issue—the siting of nuclear reactors next to population centers.  The NRC has had “a long standing policy of siting reactors away from densely populated centers,” but this is based on traditional, large light water reactor designs.  Even though such reactors are safe, some governments have taken hardline positions as to siting these reactors next to large population centers (e.g., Indian Point).  Advanced reactors reopen this issue.  The Commission has stated in the past that for next-generation reactors, “siting a reactor closer to a densely populated city than is current NRC practice would pose a very low risk to the populace.”  And as reactor designs are starting to take shape and prove themselves even safer than expected, revisiting this policy can open up a lot of new geographic options for advanced reactors.  To note, the issue of siting of advanced reactors relates to emergency planning considerations, a topic we have covered recently here.  Apart from siting though, all the papers present multiple opportunities for interested parties to comment on developing regulatory issues.

Moving abroad, in this staff paper, the NRC reaffirmed participation with the Halden Reactor Project, located in Norway.  The research reactor is managed by  the Norwegian Institute for Energy Technology, but operates under the auspices of the Nuclear Energy Agency as a “cooperatively funded international research and development project.”  The NRC has a long-standing relationship with Halden and reaffirmed its commitment to it, which includes roughly $1.5 million of funding.  The paper explains that international cooperation greatly leverages agency funds, with a 15-1 return on investment through participation in the project.

Although not unexpected here, the NRC’s reaffirmation of international cooperation nonetheless is another indication of the now global nature of the industry, especially for advanced reactors.  But the U.S. government can do more to promote international cooperation in nuclear development.  Innovation in next-generation nuclear reactors is global, with, for example, URENCO’s U-Battery venture yesterday announcing an agreement with Bruce Power (a Canadian utility).  This includes scoping “the potential deployment of micro nuclear reactors across Canada, including Bruce Power being the owner and/or operator of a fleet of U-Battery units.”  Other Advanced Reactor global partnerships include TerraPower in China and Lightbridge and Areva,  Recently, two Congressmen penned a letter to the Department of Energy expressing serious concern with the slow pace of permitting in relation to nuclear technology cooperation, and recognizing that the slow pace of approvals of nuclear technology exports hinders nuclear commerce and U.S. competitiveness in the field.

Hopefully, the federal government can turn to doing more to promote international cooperation and support.  Just yesterday, the Department of Commerce published a notice of an upcoming U.S.-Saudi Arabia nuclear energy roundtable.  The goal of the event is “to initiate a partnership process between U.S. civil nuclear energy companies and the King Abdullah City for Atomic and Renewable Energy (K.A.CARE), and between the U.S. and [Saudi] civil nuclear industries.”  It presents a promising opportunity for the U.S. to regain a dominant role in new nuclear construction, as Saudi Arabia is pushing forward with an effort to develop almost 18 GW of new nuclear in the country by the mid-2030s.

For more on the recent NRC publications on regulatory reform, or recent international attention to nuclear energy, please contact the authors.

The U.S. Department of Energy’s (DOE’s) Gateway for Accelerated Innovation in Nuclear (GAIN) announced last week its second round of awards.  A number of these awards have gone directly to advanced reactor startups, and they hope to push forward a number of technologies related to advanced reactors or next-generation light-water reactors.

We wanted to take a little closer look at the awards in this post.  To explain, GAIN awards come in the form of “vouchers” which provide awardees “with access to the extensive nuclear research capabilities and expertise available across the U.S. DOE national laboratories complex.”  Some of the advanced reactor ventures that received vouchers include Elysium Industries, Kairos Power, Muons, Oklo, Terrestrial Energy, Transatomic Power, and others, covering a broad swatch of different reactor types.  One nuclear battery startup, named MicroNuclear, also received an award—nuclear battery technologies have been gaining traction, with the “U-Battery” consortium engaging with the Canadian Nuclear Safety Commission for pre-licensing review in March of this year.  In addition, a number of consulting and engineering companies also received awards, and the results from those projects could benefit a number of different reactor designs.

The most popular participating DOE laboratories are the Idaho, Argonne, and Oak Ridge National Laboratories, although Sandia and Pacific Northwest National Laboratories also will be partnering with certain awardees.  About half of the research projects touch on molten salt reactor technologies, focusing on topics such as different salt chemistries, thermal hydraulics, and waste reprocessing.  A number of awards focus on metal-cooled fast reactors (including regulatory support), and modeling and simulation issues.  Five projects also have a focus on light-water reactor technologies, exploring areas such as small modular reactor concepts and waste reprocessing.

For any questions related to next-generation nuclear reactors or the GAIN initiative, please contact the authors.

In prior posts we have touched on the importance of prototype and test reactors in enabling the eventual commercialization of advanced reactors.  To help in those efforts, the NRC recently issued early draft guidance on “Nuclear Power Reactor Testing Needs and Prototype Plants for Advanced Reactor Designs.”  This document has been issued to support a public meeting on the topic, currently scheduled to occur sometime in August 2017.

As described by the NRC, this guidance describes the (i) “relevant regulations governing the testing requirements for advanced reactors,” (ii) “the process for determining testing needs to meet the NRC’s regulatory requirements,” (iii) “when a prototype plant might be needed and how it might differ from the proposed standard plant design,” and (iv) “licensing strategies and options that include the use of a prototype plant to meet the NRC’s testing requirements.”

To add, the document also provides some discussion as to the differences between prototype plants, demonstration reactors, test reactors, first-of-a-kind reactors, and other terms that are often thrown around in this space.  It also discusses different categories of tests to be conducted, and provides an FAQ on the use of a prototype plant as part of a testing regime.  Appendix A is an annotated reprint of a section of a 1991 staff paper, and is entitled “Process for Determining Testing Needs”; and Appendix B provides an interesting discussion on “Options For Using a Prototype Plant To Achieve a Design Certification or Standard Design Approval.”

For any questions on the above, please contact the authors.