Workers at Tokyo Electric Power Co.’s (TEPCO) Fukushima Daiichi nuclear energy facility in Japan will begin sampling gases inside containment at reactors 1 and 2 to obtain more accurate data on the types and amount of radioactive substances being released. TEPCO hopes that analysis of the samples will help determine the extent to which nuclear fuel from the reactors is leaking into containment. The gases will be extracted through pipes and analyzed on the first floor of the reactor buildings. Radiation measurements thus far have been based on readings taken on the facility premises. Sampling is scheduled to begin today at reactor 1 and in early August at reactor 2. TEPCO has not yet made plans for sampling at reactor 3, where radiation levels remain high. This is because TEPCO only began injecting nitrogen into reactor 3 on July 15 to minimize the risk of a hydrogen explosion. Nitrogen injection into reactors 1 and 2 began in April and June. Read More »
Tokyo Electric Power Co. continues its attempts to decontaminate radioactive water that has collected in the basements of buildings and in drains at the Fukushima Daiichi nuclear energy facility. With its current decontamination system operating at only 53 percent of capacity, TEPCO is planning to receive new water treatment equipment this week. TEPCO will use the new system alongside the existing one. Read More »
After a 6.2 magnitude earthquake struck offshore from Fukushima in the early hours of July 25, Tokyo Electric Power Co. reported there were no problems with any of the systems used to stabilize the reactors at Fukushima Daiichi and no injuries. TEPCO checked the systems for water and nitrogen injection into reactors 1, 2 and 3, the water treatment facility, and the used fuel pool cooling systems for reactors 2 and 3. Read More »
Japanese media are reporting on a joint assessment by Tokyo Electric Power Co. and the government that the company has met the first step in its effort to stabilize the reactors at the Fukushima Daiichi site. Among the targets met in the first step include re-establishing stable cooling capacity for reactors 1-3 and the used fuel storage pools for reactors 1-4. The company says it did this by putting recirculating cooling water systems into operation. A key indicator of success, TEPCO says, is that temperatures at the bottom of the reactor pressure vessels have decreased and are now stable. TEPCO also says it has reduced the level of radioactive releases from the plant to one-2 millionth of the peak release recorded just after the March accident. Read More »
Tokyo Electric Power Co. plans to achieve an improved and stabilized shutdown condition for reactors 1-3 at the Fukushima Daiichi nuclear energy facility within six months, the utility said. TEPCO said it will continue to use the circulating cooling system that decontaminates radioactive water and pumps it back into the reactors. TEPCO estimated it will take about three years to remove the fuel rods from the spent fuel storage pools and build a full-scale water treatment plant at the site. Read More »
Taking Action To Boost Safety at U.S. Nuclear Energy Facilities
Through its relentless commitment to the pursuit of excellence in operations, the U.S. nuclear industry is taking significant action to ensure that each of the nation’s 104 nuclear plants operate safely and securely.