Earthquake

The following news article originally appeared in NEI’s Nuclear Energy Overview.

The industry has submitted for NRC endorsement revised guidance for implementing the agency’s post-Fukushima order to install additional used fuel storage pool instrumentation.

The revision clarifies several points based on NRC staff comments on the initial version, which was submitted in July. In its submission, the industry reiterates its position, in line with the commission’s direction, that installing commercial-quality instruments—combined with a training and testing program to maintain their reliability—will fully comply with the order.
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Plant Update

  • Tokyo Electric Power Co. has removed the primary containment vessel dome from Fukushima Daiichi reactor 4. TEPCO published photos and video clips showing the dome being lowered to the ground. The dome will be cut up and stored on site. The company also is preparing to remove the reactor pressure vessel head in October. Steve Kraft, NEI’s senior director for Fukushima response, said these actions are key steps to prepare for the installation of a structure over the building that will allow fuel to be removed from the reactor’s used fuel storage pool. Last week TEPCO also attempted to use a camera-equipped balloon probe to investigate the condition of reactor 1’s refueling floor. The initial attempt was unsuccessful, and the company said it will try again.
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The following news article originally appeared in NEI’s Nuclear Energy Overview.

The U.S. Nuclear Regulatory Commission has endorsed industry guidance for developing updated seismic hazard evaluations for nuclear energy facility sites. The guidance gives licensees the tools to prepare responses to the NRC’s detailed request for information, which was issued in March.

“The NRC staff has reviewed the NEI guidance document and concludes that responses … prepared using this guidance will be responsive to that request,” said David Skeen, director of the NRC’s Japan Lessons-Learned Project Directorate.
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The following news article originally appeared in NEI’s Nuclear Energy Overview.

Last week’s meeting of industry and NRC post-Fukushima steering groups indicates that work is proceeding smoothly on the top priority, or Tier 1, recommendations from the agency task force that studied the accident. However, industry executives identified issues related to the flooding and seismic hazard re-evaluations that could affect schedules depending on how they are resolved.
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Industry/Regulatory/Political

  • The International Atomic Energy Agency is leading a “seismic study mission” to collect data about the effects of the 2011 earthquake on Japan’s Onagawa Nuclear Power Station. IAEA said the mission will include regulators from different countries and other experts. The goal of the trip is to collect information that member nations can use as they develop their own earthquake preparedness and response plans.
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Activity ID: 1002943 Activity Name: NEI Remarketing Safety Activity Group Name: Remarketing Safety First