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Reactor Water Levels & Automatic Actions If Water Levels Drop

This reference image shows at what point or place the water level within the reactor would cause automatic or operator initiated actions to attempt to cool the reactor.  The original document can be found here. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission. … Read entire article »

Filed under: Technical Documents

Notes On Corium And Containment

My notes (Nancy’s) on the Reactor Safety Training Course (R-800) from the NRC http://pbadupws.nrc.gov/docs/ML0210/ML021080117.pdf The notes are an abbreviated gathering of parts that may be relateable to Fukushima from sections 3 and 4. Suppression Chamber: Steam can be sent from the RPV via a safety valve and piping into the suppression chamber (torus). If the pressure in the suppression chamber (wetwell/torus) is higher than that in the drywell vacuum breakers equalize the pressure. There is a cooling spray system for the drywell portion of containment and also cooling system in the suppression chamber that runs through a heat exchanger to cool the water in the suppression chamber. Mark 1 reactors also have a direct vent system to the outside in the suppression chamber to relieve pressure. (There were attempts to open these at Fukushima) Containment: Mark 1 containments were not specifically … Read entire article »

Filed under: Research Projects, Technical Documents

Specialists Have New Theory On Fukushima Daiichi Meltdowns

Many thanks to Ob_Li for translating this for us!  The original website : http://news.tbs.co.jp/newseye/tbs_newseye4822557.html Nuclear energy specialists team analyzed Fukushima Daiichi Nuclear Power Plant data and put together their opinions. It said “Although tsunami caused the power plants blackout, it wouldn’t have caused severe crisis like meltdown if it had been handled properly.” The massive tsunami attacked Fukushima Daiichi Nuclear Power Plant. #1 reactor completely lost the AC source. In the crisis like that, the isolation  condenser, aka IC, which enables to cool off steam throughout the coolant inside of the tank and changes it into water, then put the water back into the reactor had to be utilized. The specialist team of Professor Narabayashi of Hokkaido University and nuclear power plant product maker OB of 34 members started analyzing the publicized data provided by the government and TEPCO on their own terms and found … Read entire article »

Filed under: Plant Status, Technical Documents, TEPCO, The Latest

Fukushima Daiichi, The First Hours

English language blog Gakuranman chronicled the early events after the great east earthquake. This included the melt downs at Fukushima Daiichi. It is proving to be a valuable document of what happened and when. He also takes the extra step to document the source of his information for each entry. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please … Read entire article »

Filed under: Plant Status, Technical Documents, The Latest

Japan Nuclear Disaster Models From 2002

A Japan Atomic Energy Institute paper from 2002 recently surfaced online. This paper was the technical estimations of what would happen if a nuclear reactor on the Pacific coast of Japan were to have a catastrophic accident. The models included radiation dispersal under a variety of scenarios and also illness and death rates under multiple scenarios. The plant for the experiment is  ”1100MWe BWR5 with Mark-II type containment– One of the most common plant type in Japan“. Based on the location on the maps included in the paper the reactor used was either unit 6 at Fukushima Daiichi or one of units 1-4 at Fukushima Daini. The scenario is for one reactor failure, not 3 reactor failures plus spent fuel pools as was experienced at Fukushima Daiichi. Of the included reactor scenarios … Read entire article »

Filed under: Daiichi NPP, Health Risks, JAIF, Radiation Exposure, Technical Documents, Uncategorized

Radiation Research Data Collection

This page is for categorization of reports and data related to radiation exposure through all sources, studies on radiation exposure and outcomes and any other related data. Please leave your notes in the comments. Anyone with editing access can then grab out of comments and organize into groupings as needed. General info on radiation levels and exposures:   Estacion saves the day! Thanks for the conversions. 0.10 Gy = 0.10 Sv = 100 mSv = 1000 uSv, for X-ray, Gamma ray or beta radiaton 0.10 Gy = 2.00 Sv, for alpha particles ——– Radiation absorbed dose (rad) Under exposure a given material has an ability to absorb radiation. This differs with certain materials (think lead versus water) and some will absorb more or less as radiation passes through. Conventional units: A dose of 1 rad means the absorption of … Read entire article »

Filed under: Protect Yourself, Radiation Exposure, Research Projects, Technical Documents

Core Meltdowns at Fukushima Daiichi Nuclear Power Station: Aging as a Contributing Factor

Radiation embrittlement, corrosion, fatigue and other wear dictate the rate of temperature change at which the reactor pressure vessel (RPV) that accommodates the fuel core can be cooled down without cold-shock damage. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission. … Read entire article »

Filed under: Plant Status, Technical Documents, The Latest

Sample Documents Gallery

This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission. … Read entire article »

Filed under: Peer Review, Technical Documents, The Library

GE Whistleblower Nuclear Physicist Jack Shannon

This interview offers a revealing look inside the nuclear industry from an ex-industry insider.  Jack Shannon was employed by General Electric as a contract engineer for their work with the  U.S. Navy reactor program.  In that capacity, he designed the nuclear power plants that still power most of the nuclear submarines and cruisers in the fleet. Jack Shannon Part 1 Jack Shannon Part 2 Jack Shannon Part 3 Jack Shannon Part 4 Jack Shannon Part 5 You have to be a brave person. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it … Read entire article »

Filed under: Media, Technical Documents

TEPCO Historical Plant Data March 11 to May 17

TEPCO HISTORIC DATA – Daiichi plant statistics March 11 to May 17 Group contributor Hudebnik found these on TEPCO’s website. They were on line for only an hour and then were pulled off the web. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission. … Read entire article »

Filed under: Daiichi NPP, Fukushima Status, Reactor 1, Reactor 2, Reactor 3, Reactor 5, Reactor 6, Reporting Agencies, Technical Documents, TEPCO

TEPCO Documents

Our Library of TEPCO technical documents, reports and press releases. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission. … Read entire article »

Filed under: Daiichi NPP, Technical Documents, TEPCO

Technical Documents Fukushima Daiichi

This ongoing list of technical documents related to Fukushima Daiichi or the GE Mark 1 BWR Reactor in general will be updated as we find new information so please check back. This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission. … Read entire article »

Filed under: Daiichi NPP, Reactor 1, Reactor 2, Reactor 3, Reactor 4, Reactor 5, Reactor 6, Technical Documents

Useful Nuclear Acronyms

Acronyms with definitions. Some useful terminology to understand technical reports. BWR – Boiling Water Reactor CV – Containment Vessel This article would not be possible without the extensive efforts of the SimplyInfo research team Join the conversation at chat.simplyinfo.org All content is copyright SimplyInfo.org. Content cited, quoted etc. from other sources is under the respective rights of that content owner. If you are viewing this page on any website other than www.simplyinfo.org (or www.fukuleaks.org) it may be plagiarized, please let us know. If you wish to reproduce any of our content in full or in more than a phrase or quote, please contact us first to obtain permission. … Read entire article »

Filed under: Current Readings, Fukushima Status, Monitoring Results, Radiation Readings, Reporting Agencies, Technical Documents