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DOE DNFSB INFORMATION ARCHIVE   Most Recent Correspondence   More November 25, 2019, Department letter notifying the Board that DOE has completed Actions 2-3 and 2-4 of the Implementation Plan for Recommendation 2012-2, Hanford Tank Farms Flammable Gas Safety Strategy. [PDF] November 25, 2019, Department letter requesting a 25-day extension to provide response to the Board's August 27, 2019, letter regarding the Safety Significant Confinement Ventilation System at the Waste Isolation Pilot Plant. [PDF] November 18, 2019, Board Letter responding to DOE Office of River Protection (ORP) letter of May 15, 2019, regarding design issue resolution in Hanford’s Waste Treatment and Immobilization Plant pulse jet mixers control system. [PDF] November 15, 2019, Board letter establishing a 60-day reporting requirement for a briefing on 1) the NNSA strategy for ensuring the deficient safety systems at the LANL Plutonium Facility will be upgraded in order to meet a schedule commensurate with future national security missions and 2) the approach for addressing the weaknesses in the analyses that support the Plutonium Facility safety basis. [PDF] November 15, 2019, Department letter requesting a 45-day extension to provide a response to the Board’s October 18, 2019, letter regarding flammable gas hazards associated with solid wastes. [PDF] November 12, 2019, Board letter transmitting its Technical Report (DNFSB/TECH-44: Los Alamos National Laboratory Plutonium Facility Leak Path Factor Methodology) for DOE’s information and use. [PDF] November 6, 2019, Board letter advising DOE to take action to revise DOE Standard 3014-2006, Accident Analysis for Aircraft Crash into Hazardous Facilities, in order to address the identified safety issues enumerated in the DNFSB Staff Report. [PDF] October 28, 2019, Board letter responding to DOE’s letter of September 23, 2019, and establishing a reporting requirement for DOE to confirm a briefing on the Implementation Plan for Recommendation 2019-1, Uncontrolled Hazard Scenarios and 10 CFR 830 Implementation at the Pantex Plant. [PDF] October 18, 2019, Board letter establishing a reporting requirement for DOE to provide response to questions regarding flammable gas hazards associated with solid wastes. [PDF] October 11, 2019, Board letter responding to NNSA letter dated August 9, 2019, concerning Board access to all phases of the nuclear explosive safety study process. [PDF]  Correspondence List A Chronological Listing of all correspondence, reports, and memorandum between the Defense Nuclear Facilities Safety Board (DNFSB) and the Department of Energy (DOE) by Year - Month - Day.     Chronological Listing:     2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 - 2000 | 1999 - 1990  Board Recommendations  A listing of all correspondence, reports, memorandum, and DOE implementation plans related to a specific DNFSB Recommendations (see About Board Recommendations) between DOE and the DNFSB by Year - Month - Day.     All Board Recommendations     Open Board Recommendations:     2019-2 | 2019-1 | 2012-2 | 2012-1  Correspondence by Site  Board correspondence and other documents sorted by applicable DOE site.      Hanford | INL | LANL | LLNL | NNSS | Pantex | SNL | SRS | WIPP | Y-12/ORNL | Other  Annual Reports to Congress        Annual Reports to Congress  Public Meetings and Hearings        Board Public Meetings and Hearings  DOE Briefings to DNFSB        DOE Briefings to DNFSB  Board Technical Reports        Board Technical Reports  CMRR Certification       Correspondence - CMRR Certification