Skip to main content

NRC Proposes Adding Aircraft Impact Assesments to New Reactor Certification Process

Released late yesterday by NRC:
The U.S. Nuclear Regulatory Commission (NRC) today unveiled the third in a series of major steps to enhance the post-Sept. 11 security of nuclear power plants. The agency proposal would require each applicant for a new reactor design to assess how the design, to the extent practicable, can have greater built-in protections to avoid or mitigate the effects of a large commercial aircraft impact, making them even more resistant to an attack.

The Commission emphasized that seeking security assessments and examining how designs can be improved is consistent with the traditional approach the NRC has taken to so-called “beyond design basis events.” These are events with conditions exceeding the stresses imposed by the “design basis event” conditions which require plants to be brought to a safe shutdown. Design basis event conditions include large pipe breaks, fires, earthquakes, hurricanes, tornados and floods. Assessing a new reactor design in the early stages can enable modifications or additional features to reduce the need for human intervention in the event of an airplane crash.

The NRC will seek comment from the public, the nuclear industry and the technical community on the proposal. The proposed rule, which will replace an NRC staff proposal, will be available for comment later this year.
NEI spokeman Steve Kerekes passed along the following note in response:
While we've not seen details beyond the news release at this point, the Commission's action strikes us as appropriate. It will properly assure that, as is the case with other potentially serious events like extremely severe hurricanes and earthquakes (we already design for some of these, of course), aircraft impacts are examined early on as part of the design process.

A great deal of security-related activity at nuclear plants the past five years has centered on steps to mitigate the effects of events like aircraft impacts. This action will enhance the defense-in-depth philosophy that is used in designing these new facilities -- which due to advanced designs will have even higher margins of safety than the 103 nuclear plants operating in the United States today.
More later, if warranted.

Comments

Popular posts from this blog

Activists' Claims Distort Facts about Advanced Reactor Design

Below is from our rapid response team . Yesterday, regional anti-nuclear organizations asked federal nuclear energy regulators to launch an investigation into what it claims are “newly identified flaws” in Westinghouse’s advanced reactor design, the AP1000. During a teleconference releasing a report on the subject, participants urged the Nuclear Regulatory Commission to suspend license reviews of proposed AP1000 reactors. In its news release, even the groups making these allegations provide conflicting information on its findings. In one instance, the groups cite “dozens of corrosion holes” at reactor vessels and in another says that eight holes have been documented. In all cases, there is another containment mechanism that would provide a barrier to radiation release. Below, we examine why these claims are unwarranted and why the AP1000 design certification process should continue as designated by the NRC. Myth: In the AP1000 reactor design, the gap between the shield bu...

Wednesday Update

From NEI’s Japan micro-site: NRC, Industry Concur on Many Post-Fukushima Actions Industry/Regulatory/Political Issues • There is a “great deal of alignment” between the U.S. Nuclear Regulatory Commission and the industry on initial steps to take at America’s nuclear energy facilities in response to the nuclear accident in Japan, Charles Pardee, the chief operating officer of Exelon Generation Co., said at an agency briefing today. The briefing gave stakeholders an opportunity to discuss staff recommendations for near-term actions the agency may take at U.S. facilities. PowerPoint slides from the meeting are on the NRC website. • The International Atomic Energy Agency board has approved a plan that calls for inspectors to evaluate reactor safety at nuclear energy facilities every three years. Governments may opt out of having their country’s facilities inspected. Also approved were plans to maintain a rapid response team of experts ready to assist facility operators recoverin...

Nuclear Utility Moves Up in Credit Ratings, Bank is "Comfortable with Nuclear Strategy"

Some positive signs that nuclear utilities can continue to receive positive ratings even while they finance new nuclear plants for the first time in decades: Wells Fargo upgrades SCANA to Outperform from Market Perform Wells analyst says, "YTD, SCG shares have underperformed the Regulated Electrics (total return +2% vs. +9%). Shares trade at 11.3X our 10E EPS, a modest discount to the peer group median of 11.8X. We view the valuation as attractive given a comparatively constructive regulatory environment and potential for above-average long-term EPS growth prospects ... Comfortable with Nuclear Strategy. SCG plans to participate in the development of two regulated nuclear units at a cost of $6.3B, raising legitimate concerns regarding financing and construction. We have carefully considered the risks and are comfortable with SCG’s strategy based on a highly constructive political & regulatory environment, manageable financing needs stretched out over 10 years, strong partners...