"Reactor 2" tag
Presumption of gas flow in the PCV of the Unit 2

Hydrogen concentration management for RPV in Unit 1 to 3 at Fukushima Daiichi

Hydrogen concentration management for reactor pressure vessel in Unit 1 to 3 at Fukushima Daiichi Nuclear Power Station 1. Sequence of the events Gas control facility for primary containment vessel (Gas control facility)in…

Survey Map

Response: “Reactor 2 Suppression Chamber Damaged in the Earthquake”

Japanese Researcher: “Reactor 2 Suppression Chamber May Have Been Damaged in the Earthquake” From Kyodo News Japanese (11/19/2011): 東京電力福島第1原発2号機で、原子炉格納容器下部の圧力抑制プールが地震の揺れで早期に損傷したか、劣化した可能性が高いとする解析結果を19日までに、原子力安全の専門家がまとめた。 An expert in nuclear safety complied the result of the analysis by November 19 that shows…

Enformable Cernavoda SFP-1600

Nuclear Electrica – Cernavoda Nuclear – CANDU 6


Enformable 304b-chapter12_Page_42-1200

Nuclear Engineer shares concerns about Brunswick Nuclear Leak

The US Nuclear Regulatory Commission will begin a special inspection at Progress Energy’s Brunswick-2 unit in North Carolina after the utility said Friday the reactor pressure vessel’s lid was not adequately tightened when…

T3-P28 H_Gohla Re-analysis of noble gas samples from IMS stations at laboratories_a review of the results since 2007 UnEncrypted

Noble Gas Sample Re-Measurements at Labs – Xe-131m, Xe-133, Xe-133m, Xe-135

Objective Establishment of independent Noble Gas sample re-measurements at laboratories as one component of a comprehensive QA/QC program for IMS Noble Gas stations and support for the Noble Gas station certification process (with laboratory re-measurements)….


The Effects of Xe in a Nuclear Reactor

Effects of Xenon Poison •Saturating fission products are fission products whose concentration in fuel operating in a steady flux (i.e., at steady power):depends on the flux level, and comes to an asymptotic, finite…

Bano, Mahmooda1

March 29, 2011 – Can you help by providing an “expert” on TMI melted fuel removal techniques?

From: Scott, Michael Sent: Tuesday, March 29, 2011 5:08 AM To: ‘[email protected]’ Subject: FW: Potential support for access to damaged cores Al: Another item for industry. Can you help by providing an “expert”…

“THIS is a war between humans and technology. While that war is being fought, we should not talk about bankruptcy.” So says a Japanese official responsible for channelling the first tranche of ¥5 trillion ($64 billion) in government support to Tokyo Electric Power (Tepco) following the meltdown of its three reactors at Fukushima Dai-ichi nuclear power plant after the tsunami on March 11th.

Post-Fukushima, Japanese Official sees crisis as war between humans and technology

Despite failing to anticipate the devastating earthquake and tsunami, and a dismal performance after they hit, Tepco’s management remains broadly in place, and shareholders and creditors are being bailed out. Injecting money into…

Boiling Water Reactors4

March 14th, 2011 – Status of Fukushima Daiichi and Daini with Supplementary Materials

Status of nuclear power plants in Fukushima as of 12:30 March 14 (Estimated by JAIF) Source- Governmental Emergency Headquaters: News Release (10:30). Press conference (11:45) NISA (Nuclear and Industrial Safety Agency): News Release…

Liquid leakage in the desalting facility for the spent fuel pool in Reactor4

Fukushima Daiichi – Liquid leakage in desalting facility for Reactor 4 SFP (occurred on November 8)

Liquid leakage in the desalting facility for the spent fuel pool in Unit 4 of Fukushima Daiichi Nuclear Power Station (occurred on November 8) Related articles Co-chair of Russia’s Ecodefence and others “still…

Balarabe, Sarah2

March 15th, 2011 – I’m surprised the turbine buildings held up – Can’t find the diesels

From: Smith, Stephen Sent: Tuesday, March 15, 2011 7:34 AM To: Lehning, John; Klein, Paul Subject: RE: Satellite Site Photos – Before and After I am surprised that the turbine buildings held up,…


Japan Orders TEPCO to Revise Road Map

The government on Wednesday ordered Tokyo Electric Power Co. to create by the end of the year a new schedule for scrapping the crippled nuclear reactors at the crisis-hit Fukushima No. 1 power…


NISA releases Japanese nuclear stress test reviews on website

NISA announced yesterday that reviews of the stress test requirements will be posted on-line to promote questions and requests from the public.  The stress test is a measure being taken to re-evaluate the…

Heida, Bruce

March 14th, 2011 – Drywell Failure Probability and Pedestal Melt-Through Given Wet Drywell

From: Circle, Jeff Sent: Monday, March 14, 2011 6:26 PM To: Ward, Leonard InCX’Q Subject: Containment Failure Values Len, Here are some values from the James A. Fitzpatrick IPE PRA (licensee updated): Drywell…

Vaaler, Marlayna

March 11th, 2011 – Fukushima must not have indication of RCIC flow or cooling is not working

From:Davidson, Evan Sent:Friday, March 11,2011 4:05 PM To:Vaaler, Marlayna Subject:japan reactor http://www.tepco.co.ip/en/press/corp-com/release/11031207-e.html new announcement. Sounds like they must not have indication of RCIC flow, or for some reason the cooling is not effective….

Sigmon, Rebecca2

NRC – Keep language professional, avoid extreme opinion, careless hyperbole

From: Thorp, John Sent: Friday, April , 2011 2:36 PM To: Thompson, John; King, Mark; Thomas, Eric; Garmon, David Cc: Sigmon, Rebecca; NRRDIRS_IOEB Distribution Subject: RE: More on hardened vents, etc. – as…

Nieh, Ho

April 01, 2011 – FYI on Unit 4 SFP new video footage

From: Franovich, Mike Sent: Friday, April 01, 2011 7:01 PM To: Ostendorff, William Cc: Nieh, Ho; Kock, Andrea; Zorn, Jason Subject: FYI on Unit 4 SFP (i’m looking for this video footage) TEPCO…

Bozin, Sunny6

March 31st, 2011 – More surprises…did not hear about this on the 10:00 call – US Military sending Marines specialized in nuclear emergencies to Fukushima Daiichi

From: Franovich, Mike Sent: Thursday, March 31, 2011 2:02 PM To: Ostendorff, William Cc: Nieh, Ho; Kock, Andrea; Zorn, Jason Subject: More surprises…did not hear about this on the 10:00 call US to…

Fukushima Nuclear Crisis_Page_5

March 15th, 2011 – Congressional Research Service – Fukushima Nuclear Crisis

Summary of the Crisis The earthquake on March 11, 2011, off the east coast of Honshu, Japan’s largest island, reportedly caused an automatic shutdown (called a “scram”) of eleven of Japan’s fifty-five operating…

Giessner, John

March 30th, 2011 – Consortium should revisit reactor strategy based on current plant conditions

From:Giessner, John Sent:Wednesday, March 30, 2011 4:32 AM To:Nakanishi, Tony Subject:Fw: bullet From: Giessner, John V\V 0 To: Giessner, John kI’ |(L\- Sent: Wed Mar 30 04:31:11 2011 Subject: bullet -good 11am meeting;…

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