Criticality Safety Support Group (CSSG)

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.

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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.

David Hayes \| Bio Chair LANL dkhayes [at] lanl.gov (dkhayes[at]lanl[dot]gov)	Kevin Reynolds \| Bio Deputy Chair Y-12 National Security Complex kevin.reynolds [at] pxy12.doe.gov (kevin[dot]reynolds[at]pxy12[dot]doe[dot]gov)
Jennifer Alwin \| Bio LANL jalwin [at] lanl.gov (jalwin[at]lanl[dot]gov)	David Erickson \| Bio SRS, ret. DG_Erickson [at] blueheron.us (DG_Erickson[at]blueheron[dot]us)
David Heinrichs \| Bio LLNL heinrichs1 [at] llnl.gov (heinrichs1[at]llnl[dot]gov)	Jerry E. Hicks \| Bio DOE, ret. jerryhicks [at] aol.com (jerryhicks[at]aol[dot]com)
Thomas McLaughlin \| Bio LANL, ret. tpm [at] pobox.com (tpm[at]pobox[dot]com)	James Morman \| Bio ANL jamorman [at] anl.gov (jamorman[at]anl[dot]gov)
Catherine Percher LLNL %20percher1 [at] llnl.gov (percher1[at]llnl[dot]gov)	Robert Wilson \| Bio DOE, Ret. robertwilson1976 [at] gmail.com (robertwilson1976[at]gmail[dot]com)

Ex-officio Members

Angela Chambers \| Bio DOE Angela.Chambers [at] nnsa.doe.gov (Angela[dot]Chambers[at]nnsa[dot]doe[dot]gov)	Doug Bowen \| Bio ORNL bowendg [at] ornl.gov (bowendg[at]ornl[dot]gov)
Cris Eberle \| Bio DOE cris_s_eberle [at] orp.doe.gov (cris_s_eberle[at]orp[dot]doe[dot]gov)	Brenda Hawks \| Bio DOE brenda.hawks [at] orem.doe.gov (brenda[dot]hawks[at]orem[dot]doe[dot]gov)
Michael Zerkle \| Bio NNL Michael.Zerkle [at] unnpp.gov (Michael[dot]Zerkle[at]unnpp[dot]gov)

Emeritus Members

Michaele C. Brady \| Bio Deputy Chair PNNL, ret. MikeyBrady [at] aol.com (MikeyBrady[at]aol[dot]com)	Calvin Hopper \| Bio ORNL, retired \| Career Award hoppercm [at] comcast.net (hoppercm[at]comcast[dot]net)
Kevin Kimball \| Bio Y12, retired kimballkd [at] ornl.gov (kimballkd[at]ornl[dot]gov)	Jerry McKamy \| Bio NNSA, retired mckamyjn [at] ornl.gov (mckamyjn[at]ornl[dot]gov)
E. Fitz Trumble \| Bio Amentum fitz.trumble [at] amentum.com (fitz[dot]trumble[at]amentum[dot]com)

Past Members

Richard Anderson \| Bio LANL	Adolf Garcia DOE Career Award \| Rest in Peace
Davis Reed \| Bio ORNL Retired, inactive	Thomas Reilly \| Career Award WSMS, Ret.
Hans Toffer \| Bio Fluor Gov't Group, retired Rest in Peace \| Career Award	R. Michael Westfall \| Bio ORNL, retired \| Career Award

David Hayes \| Bio Chair LANL dkhayes [at] lanl.gov (dkhayes[at]lanl[dot]gov)	Kevin Reynolds \| Bio Deputy Chair Y-12 National Security Complex kevin.reynolds [at] pxy12.doe.gov (kevin[dot]reynolds[at]pxy12[dot]doe[dot]gov)
Jennifer Alwin \| Bio LANL jalwin [at] lanl.gov (jalwin[at]lanl[dot]gov)	David Erickson \| Bio SRS, ret. DG_Erickson [at] blueheron.us (DG_Erickson[at]blueheron[dot]us)
David Heinrichs \| Bio LLNL heinrichs1 [at] llnl.gov (heinrichs1[at]llnl[dot]gov)	Jerry E. Hicks \| Bio DOE, ret. jerryhicks [at] aol.com (jerryhicks[at]aol[dot]com)
Thomas McLaughlin \| Bio LANL, ret. tpm [at] pobox.com (tpm[at]pobox[dot]com)	James Morman \| Bio ANL jamorman [at] anl.gov (jamorman[at]anl[dot]gov)
Catherine Percher LLNL %20percher1 [at] llnl.gov (percher1[at]llnl[dot]gov)	Robert Wilson \| Bio DOE, Ret. robertwilson1976 [at] gmail.com (robertwilson1976[at]gmail[dot]com)

Angela Chambers \| Bio DOE Angela.Chambers [at] nnsa.doe.gov (Angela[dot]Chambers[at]nnsa[dot]doe[dot]gov)	Doug Bowen \| Bio ORNL bowendg [at] ornl.gov (bowendg[at]ornl[dot]gov)
Cris Eberle \| Bio DOE cris_s_eberle [at] orp.doe.gov (cris_s_eberle[at]orp[dot]doe[dot]gov)	Brenda Hawks \| Bio DOE brenda.hawks [at] orem.doe.gov (brenda[dot]hawks[at]orem[dot]doe[dot]gov)
Michael Zerkle \| Bio NNL Michael.Zerkle [at] unnpp.gov (Michael[dot]Zerkle[at]unnpp[dot]gov)

Michaele C. Brady \| Bio Deputy Chair PNNL, ret. MikeyBrady [at] aol.com (MikeyBrady[at]aol[dot]com)	Calvin Hopper \| Bio ORNL, retired \| Career Award hoppercm [at] comcast.net (hoppercm[at]comcast[dot]net)
Kevin Kimball \| Bio Y12, retired kimballkd [at] ornl.gov (kimballkd[at]ornl[dot]gov)	Jerry McKamy \| Bio NNSA, retired mckamyjn [at] ornl.gov (mckamyjn[at]ornl[dot]gov)
E. Fitz Trumble \| Bio Amentum fitz.trumble [at] amentum.com (fitz[dot]trumble[at]amentum[dot]com)

Richard Anderson \| Bio LANL	Adolf Garcia DOE Career Award \| Rest in Peace
Davis Reed \| Bio ORNL Retired, inactive	Thomas Reilly \| Career Award WSMS, Ret.
Hans Toffer \| Bio Fluor Gov't Group, retired Rest in Peace \| Career Award	R. Michael Westfall \| Bio ORNL, retired \| Career Award