Measuring radioactivity has a long history and innumerable academic and commercial applications in nuclear safety, defense, medicine, biology, material sciences, etc. That may soon change, now anyone can start their own virtual lab and explore nuclear science with a $20 webcam. It’s more than just radiation detection with devices like Geiger counters, the software capabilities […]
The Pilgrim plant, a 680-megawatt boiling water reactor, began operation in 1972. Its current operating license expires on June 8, 2012. Entergy is seeking to re-license the plant for an additional 20 years. The majority of the NRC commission (4 to 1) voted to deny the watchdog group Pilgrim Watch’s most recent appeal to reopen […]
A few hours after the earthquake and subsequent tsunami, the reactors at Fukushima Daiichi began to leak radiation into the environment reportedly first from the Unit 1 reactor shortly after 17:00 when radioactive steam was released from the primary circuit into the secondary containment area to reduce mounting pressure. Radioactive material has been released from […]
Near the mouth of the Sumida River in Arakawa-ku, flowing into the Tokyo Bay, the Ministry of the Environment has been testing the concentration of radioactivity in water and mud of the riverbed. The Ministry of the Environment is set to publish the results of a survey on the end of March. Initial tests showed […]
One of the robots is designed to measure radioactive material trapped in dust in the air, the other is equipped with a laser-scanner to create a three-dimensional map. It was also announced no plans have been made to rescue the original Quince robot which is currently trapped in the Reactor where it broke down last […]
Remediation of Affected Areas Shunsuke Kondo Chairman Japan Atomic Energy Commission Ladies and gentlemen, it is a great pleasure for me to explain the activities for the remediation of off-site areas affected by the accident, given in the second report of the Government of Japan to the IAEA on the Accident at TEPCO’s Fukushima Daiichi NPP. […]
Contaminated radioactive material in concrete continues to be found as the Japanese government works to find the extent of the distribution. The gravel being stored from quarries in Fukushima prefecture was contaminated by radioactive materials released by the Fukushima Daiichi plant. This gravel was sold to companies, like mixed-concrete companies who used the materials on […]
A government commission evaluating guidelines on nuclear disaster management released a plan Wednesday asking authorities to refrain from using SPEEDI, a computer system that judges whether residents should evacuate based on its predictions of radioactive fallout after a nuclear accident. Under current guidelines, evacuations will be ordered when exposure to radioactivity is expected to reach […]
Representatives of the Japanese Ministry of Education were called as witnesses by the Accident Investigation Board in charge of discovering the true nature of the Fukushima nuclear disaster. During questioning it was determined that the predictive data from SPEEDI, which forecasts and predicts spread of radioactive material after a nuclear disaster, had been provided to […]
Recently radioactive material was found in a newly built condominium in Nihonmatsu, Fukushima Prefecture. The crushed stone is used as a raw material to make mixed concrete. Some of it has already been used in farms and golf courses in civil engineering in the prefecture. Source: Yomiuri
From: Franovich, Mike Sent: Sunday, April 17, 2011 1:17 AM To: Ostendorff, William Cc: Nieh, Ho; Kock, Andrea; Zorn, Jason Subject: IAEA distributed document 4-17-11 Attachments: Summaryofreactorunitstatus at_17-AprilOOOOUTC.pdf Attached is the latest IAEA report which is quite comprehensive. Some items to note from the report: Work on the backup system to provide alternate cooling water to […]
From: Brown, Frederick Sent: Tuesday, March 29, 2011 10:56 PM To: Cheok, Michael; Gibson, Kathy Cc: Ruland, William; Dudes, Laura; Uhle, Jennifer; Hiland, Patrick; Hackett, Edwin; Skeen, David; RST01 Hoc; Hoc, PMT12; McDermott, Brian; Coe, Doug; Scott, Michael; Brown, Frederick; RST01 Hoc Subject: Request for Ops Center RTS support Importance: High Mike, Kathy First, I’m […]
Power Reactor Event Number: 47496 Facility: MILLSTONE Region: 1 State: CT Unit: [ ] [2] [ ] RX Type: [1] GE-3,[2] CE,[3] W-4-LP NRC Notified By: JASON BOOKMILLER HQ OPS Officer: VINCE KLCO Notification Date: 12/03/2011 Notification Time: 16:53 [ET] Event Date: 12/03/2011 Event Time: 12:35 [EST] Last Update Date: 12/03/2011 Emergency Class: NON EMERGENCY 10 CFR Section: […]
[quote] The radiation level of the surface of the contaminated water is 1.8 mSv per hour, but gamma rays, beta radiation were registered as high as 110 mSv. The leakage may have contained about 100,000 becquerels per cubic centimeter of radioactive strontium out the Beta, this concentration is equivalent to a million times that of […]
From:Phalen, Martin Sent:Monday, April 18, 2011 12:29 PM To:Burza, Justine Subject:FW: DEQ news release on radiation detection in MI Attachments:033011 iodinealert.doc From: Logaras, Harral Sent: Thursday, March 31, 2011 3:39 PM To: Phalen, Martin Cc: Chandrathil, Prema; Mitlyng, Viktoria; Barker, Allan; Heck, Jared; Pederson, Cynthia Subject: RE: DEQ news release on radiation detection in MI […]
The Ministry has confirmed problem has been detected in Kashiwa, Chiba Prefecture, locally high radiation doses of about 450,000 becquerels per kilogram of Cesium were detected in the highest stratum of 5-10 cm depth from the surface. The study was conducted on two days this month. The ministry will conduct an additional investigation, such as estimating the […]
Play Part 2, “Evaluation of current emissions of radioactive material from the reactor building” Description- Documentation Unit 1-3 Fukushima Daiichi Nuclear Power Station Reference [? How to evaluate the current emissions of radioactive material from the reactor building (154KB) Evaluation of dose exposure to concentrations of radioactive material being measured – Reference (319KB) Look at […]
Work to construct a series of underground concrete vaults to hold solid low-level waste (LLW) from the decommissioned experimental fast reactors at Dounreay is expected to cost over $150 million USD. Plans include up to 6 sub-surface vaults, which will receive approx 240,000 tonnes of LLW from the site’s demolition. LLW typically consists of debris such […]
During court proceedings concerning a radioactive golf course, Tokyo Electric Power Co. stunned lawyers by saying the utility was not responsible for decontamination because it no longer “owned” the radioactive substances. TEPCO’s argument over ownership of the radioactive substances drew a sharp response from lawyers representing the Sunfield Nihonmatsu Golf Club and owner Sunfield. The […]
TOKYO — Eight and a half months have passed since disaster struck the coast of eastern Japan on March 11th. The situation at Fukushima Daiichi is still far from stable, and the amount of radiation leaking from the reactors is still not released. Recovery efforts are still failing to achieve smooth progress. Factors hampering recovery […]