Criticality Safety Support Group (CSSG) | Nuclear Criticality Safety Program

About the CSSG

The Criticality Safety Support Group (CSSG) was formed in response to Defense Nuclear Facilities Safety Board (DNFSB) Recommendation 97-2, Criticality Safety. The CSSG functions as the technical support group to the Nuclear Criticality Safety Program (NCSP) Manager, providing operational and technical expertise pertinent to the criticality safety needs of DOE missions. This expertise is relevant to integral experiments, nuclear data, methods, training, and organizational structures supporting the development and execution of the NCSP. Additionally, the scope of CSSG activities also includes reviewing:

Activities or conditions that have the potential for serious degradation of nuclear criticality safety at DOE facilities
New nuclear facility designs where criticality is a credible hazard
New or revised DOE directives, standards and guides related to criticality safety
Contractor nuclear criticality safety programs at DOE facilities in support of DOE line management

The CSSG conducts its work in accordance with a Charter, Work Instructions, and Membership Policy as approved by the NCSP Manager.

CSSG Members

The CSSG consists of 10 current members including the Chair and Deputy Chair. The members are selected from DOE and its Contractors to provide a collective knowledge spanning the broad spectrum of nuclear criticality safety technology and safety areas. The 10 current members are the only voting members of the CSSG. Emeritus status is comprised of formerly Current members. Ex-officio members are appointed to provide expertise in a specific area of criticality safety. All members are appointed by, and serve with the approval of the NCSP Manager.

Kevin.Reynolds [at] y12nsc.doe.gov (Kevin Reynolds)

Chair, Bio | Y-12 National Security Complex

jalwin [at] lanl.gov (Jennifer Alwin)

Deputy Chair, Bio | Los Alamos National Laboratory (LANL)

bowendg [at] ornl.gov (Doug Bowen)

Bio | Oak Ridge National Laboratory (ORNL)

DG_Erickson [at] blueheron.us (David Erickson)

Bio | Savannah River Nuclear Solutions (SRS), Retired

dkhayes [at] lanl.gov (David Hayes)

Bio | Los Alamos National Laboratory (LANL)

David Heinrichs

heinrichs1 [at] llnl.gov (David Heinrichs)

Bio | Lawrence Livermore National Labortory (LLNL)

jamorman [at] anl.gov (James Morman)

Bio | Argonne National Laboratory (ANL)

patrick.moss [at] nnsa.doe.gov (Pat Moss)

Bio | LAFO

Catherine Percher

percher1 [at] llnl.gov (Catherine Percher)

Lawrence Livermore National Labortory (LLNL)

robertwilson1976 [at] gmail.com (Robert Wilson)

Bio | Department of Energy (DOE), Retired

Angela Chambers

Angela.Chambers [at] nnsa.doe.gov (Angela Chambers)

Bio | Department of Energy (DOE)

larry.berg [at] nnsa.doe.gov (Larry Berg)

Bio | Department of Energy (DOE)

cris_s_eberle [at] orp.doe.gov (Cris Eberle)

Bio | Department of Energy (DOE)

brenda.hawks [at] orem.doe.gov (Brenda Hawks)

Bio | Department of Energy (DOE)

Michael.Zerkle [at] unnpp.gov (Michael Zerkle)

Bio | Naval Nuclear Laboratory (NNL)

MikeyBrady [at] aol.com (Michaele C. Brady)

Deputy Chair, Bio | Pacific Northwest National Laboratory (PNNL), Retired

jerryhicks [at] aol.com (Jerry E. Hicks)

Bio | Department of Energy (DOE), Retired

hoppercm [at] comcast.net (Calvin Hopper)

Bio | Career Award
Oak Ridge National Laboratory (ORNL), Retired

kimballkd [at] ornl.gov (Kevin Kimball)

Bio | Y-12 National Security Complex, Retired

jnmckamy [at] lanl.gov (Jerry McKamy)

Bio | National Nuclear Security Administration (NNSA), Retired

Richard Anderson

Richard Anderson

Bio | Los Alamos National Laboratory (LANL)

Adolf Garcia

Career Award | Obit
Department of Energy (DOE)

Thomas McLaughlin

Thomas McLaughlin

Bio | Obit
Los Alamos National Laboratory (LANL), Retired

Davis Reed

Bio | Los Alamos National Laboratory (LANL), Retired (incactive)

Thomas Reilly

Career Award | WSMS, Retired

Hans Toffer

Bio | Career Award | Obit
Fluor Gov't Group, Retired

fitz.trumble [at] amentum.com (Fitz Trumble)

Bio | Amentum

Robert “Mike” Westfall

Robert “Mike” Westfall

Bio | Career Award
Oak Ridge National Laboratory (ORNL), Retired