CISAC Co-director Siegfried Hecker discusses energy, proliferation issues and his trips to North Korea. 

The large-scale industrial accident at the Fukushima-Daiichi Nuclear Power Plant was the culmination of three inter-related factors: external natural hazard assessment and site preparation, the utility’s approach to risk management, and the fundamental reactor design.

The reactor accident was initiated by a magnitude 9 earthquake followed by an even more damaging tsunami. However, it was the inability to remove the decay heat in the reactor core that led to core meltdown and radioactive release.

A review of the timeline of the major Fukushima accident sequences: The plant first experienced a station blackout (i.e. loss of all offsite and onsite power) due to flooding of backup critical emergency cooling equipment. The lack of an ultimate heat sink led to the fuel overheating. Subsequently, the generation of hydrogen through steam oxidation of of the fuel cladding led to chemical explosions causing significant structural damage.

The focus of this talk (presentation slides below) is on the engineering aspects of the reactor accident and the prospects for local environmental recovery. Radionuclide measurements in space and time provide important evidence for the exact evolution of fuel damage leading to partial core melting in multiple units. A review of the spent nuclear fuel pools is given where isotopic water composition and visual inspection images provide important evidence for the condition of the spent nuclear fuel.

While it will be several months to a year before we will be in a position to learn most of the lessons from this tragdy, several conclusions about defensive design, mitigation actions, and emergency response have been drawn by international organizations.

While the public health impact appears to have been low, the economic and nearby environmental consequences are severe, There is no doubt that land restoration will take over a decade and perhaps much longer. A review is given of actions taken by the Japanese government for land recovery in areas such as decontaminating top soil and local farmland as well as highly radioactive water used during ‘feed and bleed’ cooling of the core.

Sixty-six years ago, a small group of scientists, policy makers and military leaders embarked upon a highly secretive project to build a nuclear bomb. It would change the world forever. Today, the tightly-controlled knowledge and technologies of the Manhattan Project have given way to the open culture of the internet and the Information Age.

The revolution in technology and information dissemination that has transpired since the dawn of the nuclear age has had far-reaching effects on the entire national security apparatus. It has presented dangers, but also opportunities. In the arms control arena, new communication tools allow treaties to be negotiated with greater speed, and computing models help sustain nuclear stockpiles without testing. Verification techniques and technologies are developing in new and innovative directions. However, the traditional tools of arms control policy are limited in how they apply to cyber-weapons and warfare; new ones will be needed.

Identifying the challenges associated with the Information Age, as well as solutions and opportunities, will drive the arms control agenda for the next century.

Drell Lecture Recording: NA

Drell Lecture Transcript: NA

Speaker's Biography: Rose Gottemoeller was sworn in as the Assistant Secretary of State for the Bureau of Arms Control, Verification and Compliance, on April 6, 2009. She was the chief negotiator of the New Strategic Arms Reduction Treaty (New START) with the Russian Federation. Since 2000, she had been with the Carnegie Endowment for International Peace. She most recently was a senior associate in the Carnegie Russia & Eurasia Program in Washington, D.C., where she worked on U.S.–Russian relations and nuclear security and stability. She also served as the director of the Carnegie Moscow Center from January 2006 – December 2008.

Formerly Deputy Undersecretary of Energy for Defense Nuclear Nonproliferation and before that, Assistant Secretary for Nonproliferation and National Security, also at the Department of Energy, she was responsible for all nonproliferation cooperation with Russia and the Newly Independent States. She first joined the Department of Energy in November 1997 as director of the Office of Nonproliferation and National Security.

Prior to her work at the Department of Energy, Ms. Gottemoeller served for 3 years as Deputy Director of the International Institute for Strategic Studies in London. From 1993 to 1994, she served on the National Security Council in the White House as director for Russia, Ukraine, and Eurasia Affairs, with responsibility for denuclearization in Ukraine, Kazakhstan, and Belarus. Previously, she was a social scientist at RAND and a Council on Foreign Relations International Affairs Fellow. She has taught on Soviet military policy and Russian security at Georgetown University.

Ms. Gottemoeller received a B.S. from Georgetown University and a M.A. from George Washington University. She is fluent in Russian.