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DOE DNFSB INFORMATION ARCHIVE   Most Recent Correspondence   More January 6, 2020, Department letter responding to the Board’s October 18, 2019, letter regarding flammable gas hazards associated with solid wastes. [PDF] January 3, 2020, Department letter responding to the Board letter of December 5, 2019, in which the Board reaffirms Recommendation 2019-2, Safety of the Savannah River Site Tritium Facilities [PDF] December 30, 2019, Department letter providing the DOE-SR H-Canyon Exhaust (HCAEX) Tunnel evaluation which addresses the ability of the HCAEX Tunnel to perform its function as a post-seismic safety class control structure. [PDF] December 30, 2019, Board letter extending the due date for NNSA to provide a briefing on LANL PF-4 safety basis. [PDF] December 27, 2019, Board letter providing its observations regarding certain ramps, loading docks, and appurtenances at the Pantex Plant. [PDF] December 20, 2019, Department letter responding to the Board letter of August 27, 2019, regarding the safety significant confinement ventilation system at WIPP. [PDF] December 19, 2019, Department letter transmitting the Annual Report for Fiscal Year 2019, to also include deliverables 1-14, 3-3, and 3-4 of the Implementation Plan for Recommendation 2012-1, Savannah River Site Building 235-F Safety. [PDF] December 18, 2019, Board letter transmitting an anonymous allegation regarding the ventilation systems at the Waste Isolation Pilot Plant to the Secretary for action as the Secretary deems appropriate. [PDF] December 9, 2019, Board letter granting a 45-day extension for DOE to provide a response to questions regarding flammable gas hazards associated with solid wastes. [PDF] December 9, 2019, Board letter granting a 25-day extension to provide a report and brief outlining plans to address safety issues with the Safety Significant Confinement Ventilation System (SSCVS), at the Waste Isolation Pilot Plant. [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:     2020 | 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:     2019-1 | 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