FOIA’s Related to Reactor Research/Data

Our FOIA archives feature collected and sorted FOIA documents, and are sub-categorized by event, topic, importance, and type. Email chains are extracted and published according to date. Press releases are archived by date of publication. Presentation materials and pdfs are summarized and displayed in whole. Each post is titled with the date of transmission of that particular FOIA combined with the subject of the message.

FOIA’s Related to Reactor Research/Data

Entombment requires removal of RPV head – could introduce more problems than it solves

NRC likely never postulated H2 explosions size & destructive force at Fukushima

 March 11th, 2011 – Premonitions of North Anna EQ – Why does the NRC have confidence that an eq greater than DB cannot occur in the US

March 13th, 2011 – Dams and ocean cooled plants – Imagine a sustained SBO at a PWR!

March 13th, 2011 – Certified designs of new reactors in the US are based on PGA of 0.3g

March 13th, 2011 – Talking Points on Implications of Fukushima Accident to U.S. Nuclear Plants

March 14th, 2011 – Containment Failure Values – Long term SBO, Loss of Decay Heat Removal

March 14th, 2011 – This is the TBW sequence we’ve all dreaded – Japan still very secretive

March 14th, 2011 – Any inconsistencies or statements that undermine will have lasting effects

March 14th, 2011 – SPAR Hazard Models – LOOPPWR:40-10

March 14th, 2011 – Seismic PRAs do not consider damage from earthquake aftershocks – Station Blackout Write-Up

March 14th, 2011 – OpE Nuclear Power Plant Design for Natural Phenomena

March 14th, 2011 – A good qualitative idea of the types of doses such releases can be expected to deliver

March 14th, 2011 – Is our [U.S.] battery backup power less effective than the Japanese?

March 14th, 2011 – GI-199 Questions – Due to uncertainties in the data NRC sending letter to US Plants

March 14th, 2011 – Modelling Seismic Event Sequences like the one that happened to Fukushima

March 14th, 2011 – What a licensee needs to determine to ensure not exceeding licensed limits

March 15th, 2011 – The Conditions in Japan appear to have degraded

March 15th, 2011 – NUREG-0651- Torus (Suppression Chamber) Portion of the Mark I Containment

March 15th, 2011 – Significant corrosion of the Oyster Creek torus in 1980s

March 15th, 2011 – Don’t know if Japan added hardened vent but I’m sure they are well aware of it

March 15th, 2011 – TEPCO fail on info-sharing / No N-crisis HQ for 4 days after tsunami disabled reactor cooling system

March 15th, 2011 – Don’t know if Japan added hardened vent but I’m sure they are well aware of it

March 15th, 2011 – TEPCO fail on info-sharing / No N-crisis HQ for 4 days after tsunami disabled reactor cooling system

March 15th 2011 – Table of BWR’s Mark I

March 16th, 2011 – Tsunami documents from RES – ML072920474 – ML082960196

March 16th, 2011 – Assessing SFP Damage – SOARCA – Uncovered Spent Fuel Reports – Leak at Unit 4 SFP

March 16th 2011 – NRC Admits Zirc Fire Is Possible – But Won’t Release All the Research Data

March 16th, 2011 – Classified as OUO documents – BWR zirc fire data

March 16th, 2011 – Tried dropping water from helicopters but only hit the target once

March 17th, 2011 – MACCS calculations capable of 8,000 miles – Usually run to 1,000 miles

March 18th, 2011 – Design Basis Floods Determined from Area-Discharge Envelopes – Not comfortable with level of conservatism

March 18th, 2011 – National Weather Service Reports used to estimate precipitation are 30-40 years old

March 18th 2011 – It might be good to know the effects of salt deposition on cooling of BWR fuel assemblies

March 18th, 2011 – Tohoku-Taiheiyou-Oki Earthquake Effects On Japanese Nuclear Power Plants

March 18th, 2011- Handy Fact Sheets

March 18th, 2011 – Station Blackout Rule – 44 Units rely on battery power

March 21st, 2011 – Clarification and assessment of potential radiological release source terms for Fukushima Units 3&4 spent fuel pools

March 21st, 2011 – Probability of NPP Ground Motions Exceeding DB high as 6%

March 21st, 2011 – Chemistry of emissions – Difference between zirc & hydrocarbons fire

March 21st, 2011 – Some questions have come up regarding the integrity of the SFP liner

March 22nd 2011 – Rundown of NISA Requests – Residual H2 in containments

March 22nd, 2011 – Radiological Consequences and SBO – External Panels

March 23rd, 2011 – Questions on Boric Acid Solubility in Seawater

March 23, 2011 – NRC Decides 20 and 30 Year Old Predictions of Stress Corrosion Cracking and Crack Growth Rate Need Careful Examination

March 23rd, 2011 – SES needs to make decision on concerns related to NPSH Credit for BWR Mark 1′s

March 23rd, 2011 – The EPA took RADNet down because they were getting data from ‘other’ sources

March 23rd, 2011 – What impact on license renewal? I’m thinking older plants a hard sell

March 23rd, 2011 – Licensing Activities Subject to Enhanced Handling Measures Post-Fukushima

March 23rd, 2011 – Regarding the NRC “Screening Process” – Never hurts to reinforce what’s already been stated

March 24th, 2011 – Core Damage Frequencies – GI-199 – Staff will re-examine some or all

March 24th, 2011 – Jack Grobe wants “all Generic Communications associated with Chernobyl”

March 25th, 2011 – Probability of Containment Failure – NUREG/CR 6920 – 1150

March 25th, 2011 – Can we predict a tsunami wave height? – Are the models valid?

March 25th, 2011 – Japanese Methods for Tsunami Analysis – Guidance Documents

March 25th, 2011- Issues with seawater in a BWR – Crack growth rate found to be 30 times higher than KAPL paper

March 25th, 2011 – Probability of Containment Failure – NUREG/CR 6920 – 1150

March 25th, 2011 – Paradigm shift as large as permanent lateral displacement of Japan

March 25th, 2011 – NISA – TEPCO – Understanding Core Condition (Ex-Vessel or not)

March 26th, 2011 – Mark 1 hydrogen explosion damaging torus/suppression pool

March 26th, 2011 – Mark 1 containment vulnerable to melt through – SBO

March 26th, 2011 – Fuel Coolant Interaction Analysis – Worse Case Melt Scenario

March 26th, 2011 – Mark 1 liner failure during severe accidents – Some made changes

March 26th, 2011 – Melt that relocates to lower head will be mixed with a lot of sea salt

March 26th, 2011 – Decommissioning Type Information –

March 27th, 2011 – Salt effects on molten core materials – Effects on energetics

March 27th, 2011 – NRC, GE, EPRI, INPO, Naval Reactors, and DOE Fukushima Severe Accident Management Measures

March 29th, 2011 – The SAMGs are specially designed for this situation, why are people trying to seem like no clear direction?

March 29th, 2011 – NRC shares Summary of TMI-2 fuel removal/cleanup with NISA

March 29th, 2011- Isotopic make up of spent fuel 5% enrichment

March 30th, 2011 – Nuclear Reactor Accidents: Three Mile Island and Fukushima – MIT ANES Symposium

March 30th, 2011 – Please fix the 18 year leaking saftety mechanisms at Indian Point ASAP.

March 30th, 2011 – Using Catawba and Browns Ferry MOX safety evaluation reports

March 31st, 2011 – Working on high priority spent fuel pool safety questions

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