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Sunil Sunny Chirayath

Sunil Sunny Chirayath

Director
Associate Professor, Department of Nuclear Engineering

Email:  sunilsc@tamu.edu
Phone:  979.862.2616
Office:  AIEN M312B
Other Webpage

Dr. Sunil Chirayath is the director of NSSPI and also serves as an Associate Professor in the Department of Nuclear Engineering at Texas A&M University.  Dr. Chirayath is an expert in the area of nuclear safety, security and safeguards research and education. He teaches courses on nuclear fuel cycle, nuclear material safeguards, nuclear security and Monte Carlo radiation transport. His research interests include safeguards approaches for nuclear fuel cycle, proliferation resistance quantification and analysis, nuclear forensics, nuclear security insider threat analysis, fast breeder reactor analysis and small modular reactor neutronics coupling with thermal hydraulics. In NSSPI he manages projects funded by USDHS (Domestic Nuclear Detection Office), USDOE (National Nuclear Security Administration and Nuclear Energy), USDOS (Partnership for Nuclear Security) and nuclear utility companies. His research project awards in the U.S. has exceeded $3 million in the past 5 years. Dr. Chirayath advised more than 15 MS and PhD students. Prior to his jobs in NSSPI as postdoctoral research associate and research scientist, he served the Indian Atomic Energy Regulatory Board (AERB) in the capacity of Scientific Assistant (1991-1998) and Scientific Officer (1998-2009) with the responsibility for the regulatory review of Indian nuclear fuel cycle facilities. He underwent one year health physics stipendiary training in the Indian Bhabha Atomic Research Center (BARC) during 1990-1991. He earned his Ph.D. and M.Sc. in Physics respectively from University of Madras and University of Calicut (India). He has over 100 technical publications in refereed journals (25) and national/international conference proceedings (85).

 

NSSPI Publications

  1. E.D. Kitcher and S.S. Chirayath, "Improving Multi-Physics Coupling Scheme for the Analysis of Xenon-Induced Power Oscillations," Transactions of American Nuclear Society, 2017 ANS Winter Meeting, October 29-November 2, (2017).
  2. P.J. O’Neal and S.S. Chirayath, "Methodology Development for Combined Evaluation of Security and Safety Risk," Transactions of American Nuclear Society, 2017 ANS Winter Meeting, October 29-November 2, (2017).
  3. T. Aoki, H. Sagara, and S.S. Chirayath, "Feasibility Study of TRISO Fuel for Efficient Pu Incineration and 3S Feature Enhancement Requirements for Measurement Accuracy of the Pu Verification Technique," ,” 38th Annual Meeting of the Institute of Nuclear Materials Management Japanese Chapter, Japan, October, 2017.
  4. J. Chen, M. Shah, S.S. Chirayath, C. Gariazzo, and C.M. Marianno, "Radiological Surveillance System Optimization and Development of Facility Operational Guidelines for the Safeguard Laboratory Complex at Texas A&M University," 58th Annual Meeting of the International Nuclear Materials Management, Indian Wells, CA, 16-20 July 2017.
  5. E. Kitcher and S.S. Chirayath, "A neutron transport and thermal hydraulics coupling scheme to study xenon induced power oscillations in a nuclear reactor," Annals of Nuclear Energy 106 (2017). See Document
  6. Y. Aoki, H. Sagara, and S.S. Chirayath, "Impact of Curium Decontamination on MUF and MUF-uncertainty in TRU Fuel Cycle Employing High Temperature Gas Cooled Reactors," 38th 2017 Annual Meeting of the Atomic Energy Society of Japan, Tokai University Campus, Japan, March 27-29, 2017.
  7. S.S. Chirayath, C.M. Marianno, K.H. Ragusa, and K.L. Peddicord, "Preparing the Next Generation of Nuclear Security Professionals—The Technology/Policy Nexus," International Conference on Nuclear Security: Commitments and Actions, Vienna, Austria, 5–9 December 2016.
  8. P. Mendoza, S.S. Chirayath, and C.M. Folden, "Fission Product Decontamination Factors for Plutonium Separated by PUREX from Low-Burnup, Fast-Neutron Irradiated Depleted UO2," Applied Radiation and Isotopes 118 (2016). See Document
  9. M.A. Hawila and S.S. Chirayath, "Nuclear Security Risk Analysis: An Insider-Outsider Collusion Scenario," International Journal of Nuclear Security 2:2 (2016). See Document
  10. M.A. Hawila and S. Chirayath, "Probabilistic Risk Assessment of Spent Fuel Pool Cooling System Failure Considering Safety and Security Initiating Events," ANS Winter Meeting & Expo, Las Vegas, NV, 06-10 November 2016.
  11. T. Aoki, S.S. Chirayath, H. Sagara, "Material Balance Area Design for the Transuranic Fuel Cycle Employing High Temperature Gas Cooled Reactors," ANS Winter Meeting & Expo, Las Vegas, NV, 06-10 November 2016.
  12. Evans D. Kitcher, Sunil S. Chirayath, "Neutronics and thermal hydraulics analysis of a small modular reactor," Annals of Nuclear Energy 97 (2016). See Document
  13. S.S. Chirayath, C.M. Marianno, C,A. Gariazzo and K.H. Ragusa, "Ten years of Nuclear Security Education, Research and Training at Texas A&M University ," ANS Topical Meeting: Advances in Nuclear Nonproliferation Technology and Policy Conference (ANTPC), Santa Fe, NM, USA, 25-30 September 2016.
  14. C. Gariazzo, S. Chirayath, C.M. Marianno, M. Shah, and D.M. Trombetta, "Developing a Radiological Surveillance Education Exercise at Texas A&M University," 57th Annual Meeting of the Institute for Nuclear Materials Management (INMM), Atlanta, Georgia, 24-28 July 2016.
  15. S. Chirayath and M.A. Hawila, "Methodology for Combined Nuclear Security and Safety Risk Analysis," 57th Annual Meeting of the Institute for Nuclear Materials Management (INMM), Atlanta, Georgia, 24-28 July 2016.
  16. T. Jacomb-Hood, L. Scott, M. Shah, K. Ford, S. Horowitz, M. Subbaiah, C. Gariazzo, S. Chirayath, D. Kovacic, S. Mladineo, M. Schanfein, and M. Koskelo, "The Safeguards and Organizational Culture Workshop," 57th Annual Meeting of the Institute for Nuclear Materials Management (INMM), Atlanta, Georgia, 24-28 July 2016.
  17. S. Chirayath and J. Osborn, "Assessment of Inverse Techniques Used in Forensics Attribution Analysis of Trace Nuclide Ratios in Weapons-Grade Plutonium," 57th Annual Meeting of the Institute for Nuclear Materials Management (INMM), Atlanta, Georgia, 24-28 July 2016.
  18. G. Agrawal, S.S. Chirayath, P. Munshi, "Determination of Physical Protection System Effectiveness of a Hypothetical Facility, the Lagassi Institute of Medicine and Physics (LIMP)," 57th Annual Meeting of the Institute for Nuclear Materials Management (INMM), Atlanta, Georgia, 24-28 July 2016.
  19. V. Pandey, S. Chirayath, S. Singh, "Synergy Between Nuclear Safety and Security: Modeling of Relationship for Individuals to Reduce Risk of Insider Threat," 57th Annual Meeting of the Institute for Nuclear Materials Management (INMM), Atlanta, Georgia, 24-28 July 2016.
  20. J.M. Osborn and S.S. Chirayath, "Assessment of Inverse Techniques Used in Forensics Attribution Analysis of Trace Nuclide Ratios in Weapons-Grade Plutonium," 9th Annual DNDO Academic Research Initiative (ARI) Grantees Review Meeting, Atlanta, GA, USA, July 11-14, 2016.
  21. M.W. Swinney, C.M. Folden III, R.J. Ellis, and S.S. Chirayath, "Experimental and Computational Forensics Characterization of Weapons-grade Plutonium Produced in a Fast Reactor Neutron Environment," Nuclear Technology 197:1 (2017). See Document
  22. S. Chirayath, "Nuclear Security Education at Texas A&M University," 5th International Symposium and Seminar on Global Nuclear Human Resource Development for Safety, Security, and Safeguards, 21 February – 3 March, 2016, Tokyo, Japan. (Invited)
  23. E. Kitcher and S.S. Chirayath, "Analysis of a Generic Small Modular Integral Pressurized Water Reactor: Burnable Absorber Rod Materials," 2015 American Nuclear Society Winter Meeting, Washington, DC, November 8-12, 2015.
  24. C. Hughes, A. Daluka, and S.S. Chirayath, "Developing a Mathematical Scheme to Combine Single-Parameter Perturbation Results in Radiation Transport Calculations to Predics Joined Paremeter Perturbations," 2015 American Nuclear Society Winter Meeting, Washington, DC, November 8-12, 2015.
  25. S. Chirayath, "Nuclear Security Education at Texas A&M University," International Nuclear Atlantic Conference, Sao Paulo, Brazil, 4-9 October 2015.
  26. T. Michael Martin, L. Vasudevan, S.S. Chirayath, "Correlation between Exposure Rate and Residual Activity in Felines undergoing I-131 Thyroid Ablation Therapy," Health Physics 209:2 (2015). See Document
  27. Sunil Chirayath, Royal A. Elmore, "Nuclear Facility Insider and Outsider Threat Upgrades to Proliferation Resistance Analysis Tool, PRAETOR," INMM 56th Annual Meeting, Indian Wells, California, 12-16 July 2015.
  28. Mohammad Hawila, Sunil S. Chirayath, William Charlton. , "Nuclear Security Risk Evaluation Using Adversary Pathway Analysis Methodology for an Insider-Outsider Collusion Scenario," INMM 56th Annual Meeting, Indian Wells, California, 12-16 July 2015.
  29. S.S. Chirayath, C.M. Folden, III, and D.R. Boyle, "Nuclear forensics analysis of separated plutonium of foreign fuel cycles (NFASP) project: assessment of unique trace elements and isotope ratios in separated plutonium from low burnup nuclear fuel," Proceedings of the 8th DNDO-ARI Grantees Conference, University of Texas, Dallas, TX, USA, July 7-9, (2015).
  30. C.A. Gariazzo, K.H. Ragusa, D.R. Boyle, W.S. Charlton, S.S. Chirayath, C.M. Marianno, and P. Nelson, Jr. , "The Nuclear Security Science and Policy Institute at Texas A&M University," International Journal of Nuclear Security 1:1 (2015). See Document
  31. M.D. Toit and S.S. Chirayath, "Proposal for Improved Nuclear Fuel Utilisation and Economic Performance by Utilising Thorium," Journal of Energy in Southern Africa (JESA) 26:2 (2015).
  32. R. Kelly, P. Tsvetkov, S.S. Chirayath, J. Poston, E. Kitcher, "Uncertainty Quantification of Concrete Utilized in Dry Cask Storage," Nuclear Technology 190:1 (2015). See Document
  33. T.K. Bhardwaj, P. Mendoza, R. Du, M. Bencomo, J. Allred, M. Swinney, C. Folden, S.S. Chirayath, "Determination of decontamination factor for various radioisotopes during the PUREX process of irradiated DUO2," 249th American Chemical Society National Meeting and Exposition, Denver, CO, USA, March 22-26, 2015.
  34. S.S. Chirayath, J.M. Osborn, and T.M. Coles, "Trace Fission Product Ratios for Nuclear Forensics Attribution of Weapons-grade Plutonium from Fast and Thermal Reactors," Journal of Science & Global Security 23:1 (2015). See Document
  35. S.S. Chirayath, R. Elmore, G. Hollenbeck, N.G. Chandregowda, W.S. Charlton, R. Metcalf, and J.C. Ragusa, "Proliferation Resistance Analysis And Evaluation Tool for Observed Risk (PRAETOR) Methodology," Journal of Nuclear Materials Management, 43:2 (2015).
  36. M.W. Swinney and S.S. Chirayath, "Comparison of FBR and HFIR Monte-Carlo Simulations with Validation from Gamma Spectroscopy in Support of the NFASP Project," 2014 ANS Winter Meeting, Annaheim, CA, 9-13 November 2014
  37. R.A. Elmore, S.S. Chirayath, and S. Edreev, "Proliferation Resistance Analysis of Nuclear Fuel Cycle Facilities to Quantify the Importance of Containment, Surveillance and Physical Protection Systems," 2014 American Nuclear Society Winter Meeting, Annaheim, CA, 9-13 November 2014
  38. S.S. Chirayath, R.A. Elmore, W.S. Charlton, "Containment and Surveillance and Physical Protection Updates for Proliferation Resistance Analysis Using PRAETOR," , IAEA Symposium on International Safeguards, Vienna, Austria, October 20-24, 2014. See Document
  39. T.K. Bhardwaj, J. Allred, K. Jones, P. Mendoza, R. Du, C. Folden, S.S. Chirayath, "Nuclear forensics program at Texas A&M University," 248th American Chemical Society National Meeting, San Francisco, CA, USA, August 10-14, 2014.
  40. A. Kumar, S.S. Chirayath and P.V. Tsvetkov, "Analysis of a Sustainable Gas Cooled Fast Breeder Reactor Concept," Annals of Nuclear Energy 69 (2014). See Document
  41. J.M. Osborn, T.M. Coles, and S.S. Chirayath, "Trace Fission Product Ratios for Nuclear Forensics Attribution of Weapons-Grade Plutonium Separated from Fuel Irradiated in Thermal and Fast Reactor Types," 55th Annual Meeting of the Institute of Nuclear Materials Management, Atlanta, Georgia, 20-14 July 2014.
  42. M.W. Swinney and S.S. Chirayath, "Comparison of FBR and HFIR monte-carlo simulations with validation from gamma spectroscopy in support of the the NFASP project," 7th Annual NSF-DNDO Academic Research Initiative (ARI) Grantees Review Meeting, Leesburg, VA, USA, June 24-26, 2014.
  43. S.S. Chirayath, "Nuclear forensics analysis of separated plutonium of foreign fuel cycles (NFASP) project: assessment of unique trace elements and isotope ratios in separated plutonium from low burnup nuclear fuel," 7th Annual NSF-DNDO Academic Research Initiative (ARI) Grantees Review Meeting, Leesburg, VA, USA, June 24-26, 2014.
  44. J.M. Osborn et al., "Trace fission product ratios for nuclear forensics attribution of weapons-grade plutonium separate from fuel irradiated in thermal and fast reactor types," 7th Annual NSF-DNDO Academic Research Initiative (ARI) Grantees Review Meeting, Leesburg, VA, USA, June 24-26, 2014.
  45. S.S. Chirayath, D.R. Boyle, C.M. Folden III, "Experimental and Computational Assessment of Unique Trace Elements and Isotopes Ratios in Plutonium from Depleted Uranium Irradiated in Fast Reactor Blankets," 7th DNDO-ARI Grantees Conference, Leesburg, VA, USA, June 2014.
  46. N.G. Chandregowda, S.S. Chirayath, W.S. Charlton, Y. Ham, and S. Sitaraman, "Assessment of the Fingerprinting Method for the Verification of Spent Fuel in MACSTOR KN- 400 CANDU Spent-Fuel Dry Storage," Nuclear Technology 184:3 (2013). See Document
  47. R. Elmore, W.S. Charlton, S. Chirayath, "Sensitivity Analysis with PRAETOR for Diversion of Plutonium Self-Protected with Pu-238," Transactions of the 2013 American Nuclear Society Winter Meeting, Washington, D.C., 10-14 November 2013.
  48. J.M. Osborn et al., "Isotopic analysis of fast breeder reactor core to support the plutonium fingerprinting for forensics (PuFF) project," 6th Annual NSF-DNDO Academic Research Initiative (ARI) Grantees Review Meeting, Lansdowne, VA, USA, July 30-31 & August 1, 2013.
  49. T.M. Coles et al., "Nuclear forensics signature analysis of thermal reactor produced weapons-grade plutonium," 6th Annual NSF-DNDO Academic Research Initiative (ARI) Grantees Review Meeting, Lansdowne, VA, USA, July 30-31 & August 1, 2013.
  50. R. Elmore, W.S. Charlton, S. Chirayath, "Nuclear Proliferation Connection Implications within an Agent-Based Modeling Environment," Computational Social Sciences Society of the Americas Annual Conference, Santa Fe, NM, 22-25 August 2013.
  51. S.S. Chirayath et al., "Plutonium fingerprinting for forensics (PuFF) project: assessment of unique trace elements and isotope ratios in separate plutonium from low burnup nuclear fuel," 6th Annual NSF-DNDO Academic Research Initiative (ARI) Grantees Review Meeting, Lansdowne, VA, USA, July 30-31 & August 1, 2013.
  52. J.W. Poston, S.S. Chirayath, P.V. Tsvetkov, C.M. Marianno, R.P. Kelly, and E.D. Kitcher, "Radiation Shield Design and Dose Rate Analysis of the Independent Spent Fuel Dry Cask Storage Installation at Commanche Peak Power Plant," Health Physics Society 58th Annual Meeting, Madison, Wisconsin, USA, 7-11, July 2013.
  53. A. Khudoleeva, S.S. Chirayath, and W.S. Charlton, "Conceptual Development of the Remote Monitoring System for Safeguarding of the Dry Cask Storage Facilities," INMM 54th Annual Meeting, 14-18 July 2013, Palm Desert, California, USA.
  54. J.M. Osborn, S.S. Chirayath, and W.S. Charlton, "Neutronics Analysis of Fast Breeder Reactor Core to Support the Plutonium Fingerprinting for Forensics (PuFF) Project," INMM 54th Annual Meeting, 14-18 July 2013, Palm Desert, California, USA.
  55. T.M. Coles, S.S. Chirayath, and W.S. Charlton, "Nuclear Forensics Signature Analysis of Thermal Reactor Produced Weapons-grade Plutonium," INMM 54th Annual Meeting, 14-18 July 2013, Palm Desert, California, USA.
  56. E. Kitcher, S.S. Chirayath, "Neutronics Performance Analysis of a Small Modular Integral Pressurized Water Reactor," 2013 American Nuclear Society Annual Meeting, Atlanta, GA, June 16-20, 2013.
  57. J.M. Osborn, T.M. Coles, A.R. Twaddle, S.S. Chirayath, W.S. Charlton, "Nuclear forensics signature analysis of fast and thermal reactor produced weapons-grade plutonium," 245th American Chemical Society National Meeting, New Orleans, LA, USA, April 7-11, 2013.
  58. R. Elmore, W.S. Charlton, S. Chirayath, "Comparative Analysis of Nuclear Nonproliferation Proliferation Resistance Approaches," Transactions of the 2012 American Nuclear Society Winter Meeting, San Diego, CA, 11-15 November 2012.
  59. R. Elmore, W.S. Charlton, S. Chirayath, "Nuclear Proliferation Resistance Model Backgrounds and Method Comparative Analysis," 84th Annual National Technical Association Conference, Baltimore, MD, 19-21 September 2012.
  60. N.G. Chandregowda, W.S. Charlton, S.S. Chirayath, Y. Ham, S. Sitaraman, and G.H. Ahn , "Assessment of the Fingerprinting Method for Verification of Spent Fuel in MACSTOR KN-400 CANDU Spent Fuel Dry Storage ," 53rd Annual Meeting of the Institute of Nuclear Materials Management, Orlando, Florida, 15-19 July 2012.
  61. J.M. Osborn, T.M. Coles, AR. Twaddle, and S.S. Chirayath, "Neutronics Analysis of Fast Breeder Reactor Core to Support the Plutonium Fingerprinting for Forensics (PuFF) Project," 5th Annual DNDO-NSF ARI Grantees Conference, Leesburg, Virginia, 23-25 July 2012.
  62. R.A. Elmore, W. Charlton, and S. Chirayath., "Proposed Benchmark Cases for Proliferation Risk Assessment Modeling.," 53rd Annual Meeting of the Institute of Nuclear Materials Management, Orlando, Florida, 15-19 July 2012.
  63. G.M. Gaukler, C. Li, S.S. Chirayath, and Y. Ding, "Detecting Nuclear Materials Smuggling: Performance Evaluation of Container Inspection Policies," Risk Analysis 32(3), 531-554 (2012). See Document
  64. William S. Charlton, David Boyle, Sunil Chirayath, David G. Ford, Claudio A. Gariazzo, Craig Marianno, Kelley Ragusa, Alexander Solodov, "Educating the Next Generation of Nuclear Safeguards and Security Experts at TAMU," Proceedings of GLOBAL 2011, Makuhar, Japan, December 11-16, 2011. See Document
  65. P. Tsvetkov, S. Chirayath, J. Ragusa, S. McDeavitt, C. Gariazzo, J. Johns, A.A. Rashdan, V. Patel, A. Jati, and G.E. Rochau, "High Temperature super-critical CO2-cooled Integrated Multi-Modular Thermal Reactor," Transactions of the American Nuclear Society, Vol. 105, Washington, D.C., October 30–November 3, 2011 See Document
  66. S. Chirayath, P. Tsvetkov, J. Ragusa, R. Skoda, C. Gariazzo, "Methodology for Public Safety, Proliferation, and Economics Assessment of SMRs," Transactions of the American Nuclear Society, Vol. 105, Washington, D.C., October 30–November 3, 2011 See Document
  67. C.A. Gariazzo, S.S. Chirayath, "Advancing a Systems Optimization Tool for Monitoring Special Nuclear Material," Proceedings of the INMM 52nd Annual Meeting, Palm Desert, CA, July 17-21, 2011. See Document
  68. G.M. Gaukler, C. Li, R. Cannaday, S.S. Chirayath, and Y. Ding, "Detecting Nuclear Materials Smuggling: using Radiography to improve Container Inspection Policies," Annals of Operation Research, 187(1), 65-87 (2011). See Document
  69. W.S. Charlton, D. Boyle, S.S. Chirayath, D.G. Ford, C.A. Gariazzo, C. Marianno, K. Ragusa, A. Solodov, "Nuclear Nonproliferation and Safeguards Education at TAMU: Embracing Novel Teaching Practices," Proceedings of the INMM 52nd Annual Meeting, Palm Desert, CA, July 17-21, 2011. See Document
  70. A. Khudoleeva, G. Maksimovich Pshakin, V. Fedchenko, A. Solodov, O. Mikhaylova, S.S. Chirayath , "Safeguard Game -- The IAEA Inspection in an Imaginary State," Proceedings of the INMM 52nd Annual Meeting, Palm Desert, CA, July 17-21, 2011.
  71. J. Justina, C. Marianno, and S. Chirayath, "Radiation Transport Simulation Studies using MCNP for a Cow Phantom to Determine an Optimal Detector Configuration for New Livestock Portal," Proceedings of the 56th Annual Meeting of the Health Physics Society, Palm Beach County Convention Center, West Palm Beach, Florida, June 26-30, 2011.
  72. L. Vasudevan, W.D. Reece, S.S. Chirayath, and S. Aghara, "Characterization of Neutron and Gamma Dose in the Irradiation Cell of Texas A&M University Research Reactor," Proceedings of the ASTM 14th International Symposium on Reactor Dosimetry, Mt. Washington Resort, Bretton Woods, New Hampshire, USA, May 22-27, 2011.
  73. C. Gariazzo, S. Chirayath, "Developing a Systems Optimization Tool for Monitoring Special Nuclear Material," 33rd ESARDA Annual Meeting: Symposium on Safeguards and Nuclear Material Management, May 16–20, 2011, Budapest, Hungary. See Document
  74. M. Adams, N. Amato, M. Allmaras, W. Bangerth, S. Chirayath, J-L Guermond, G. Kanschat, P. Kuchment, J. Morel, J. Ragusa, L. Rauchwerger, J. Webster, "Detecting Small Low Emission Radiating Sources," Poster presented at The 4th annual Domestic Nuclear Detection Office (DNDO) Academic Research Initiative (ARI) Grantees Conference, Alexandria, Virginia, April 26-28, 2011. See Document
  75. R.G. McClarren, J. Madsen, M.L. Adams, M.P. Adams, N. Amato, N. Castet, S.S. Chirayath, W.D. Hawkins, L. Rauchwerger, T. Smith, "Deterministic Transport Capability for HEU Sources in Cargo Containers," Poster presented at The 4th annual Domestic Nuclear Detection Office (DNDO) Academic Research Initiative (ARI) Grantees Conference, Alexandria, Virginia, April 26-28, 2011. See Document
  76. W. S. Charlton, W. Bangerth, D. R. Boyle, S. S. Chirayath, G. Gaukler, C. Marianno, A. Vedlitz, "SHIELD: A Framework for Evaluating and Guiding Nuclear Detection System Development," The 4th annual Domestic Nuclear Detection Office (DNDO) Academic Research Initiative (ARI) Grantees Conference, Alexandria, Virginia, April 26-28, 2011.
  77. S. Chirayath, W. Charlton, A. Stafford, C. Myers, B. Goddard, J. Alfred, M. Carroll, M. Sternat, and E. Rauch, "Risk Informed Safeguards Integration Studies for a Fast Reactor Fuel Cycle," Proceedings of the 51st Annual Meeting of the Institute of Nuclear Materials and Management, Baltimore, MD, USA, July 11-15, 2010. See Document
  78. C. Gariazzo and S. Chirayath, "Using MCNP as a Vulnerability Assessment Tool on the TAMU Safeguards Laboratory," Proceedings of the 51st Annual Meeting of the Institute of Nuclear Materials and Management, Baltimore, MD, USA, July 11-15, 2010.
  79. G. Gaukler, Y. Ding, C. Li, S.S. Chirayath, A. Vaughn, and M. McGaha, "A Transportation Network Perspective for Detecting HEU in Seaborne Containers," Poster presented at the Academic Research Initiative Grantees Conference, Washington, D.C., April 2010. See Document
  80. G. Gaukler, Y. Ding, C. Li, S.S. Chirayath, A. Vaughn, and M. McGaha, "Detecting Nuclear Materials Smuggling: Combining Radiography and ATS to Improve Container Inspection," Poster presented at the Academic Research Initiative Grantees Conference, Washington, D.C., April 2010. See Document
  81. J. Webster, W. Bangerth, M. Adams, N. Amato, S. Chirayath, J-L Guermond, G. Kanschat, P. Kuchment, J. Morel, J. Ragusa, L. Rauchwerger, "Using Statistics to Set Detector Threshold Curves," Poster presented at the Academic Research Initiative Grantees Conference, Washington, D.C., April 2010. See Document
  82. S. Chirayath et al, "Multi-Attribute Utility Analysis for Proliferation Resistance Assessment," presentation at the INMM Workshop on Proliferation Assessments, Texas A&M University, College Station, February, 23-25, 2010. See Document
  83. S. Chirayath, W. Charlton, A. Stafford, C. Myers, B. Goddard, J. Alfred, M. Carroll, M. Sternat, E. Rauch, "Risk Informed Safeguards Approaches for Fast Reactor Fuel Cycle Utilizing MAUA based Proliferation Resistance Assessment," NSSPI-10-002, January 15, 2010. See Document
  84. S.S. Chirayath, G. Hollenbeck, J. Ragusa, and P. Nelson, "Neutronic and nonproliferation characteristics of (PuO2-UO2) and (PuO2-ThO2) as fast reactor fuels," Nuclear Engineering and Design 239, 1916-1924 (2009).* See Document
  85. S.S. Chirayath, J. Ragusa, and P. Nelson, "Thorium blended and regular MOX burn-up studies for fast reactor fuel cycle safeguards," Proceedings of 50th annual meeting of INMM, July 12-16, 2009, Tucson, AZ, USA. See Document
  86. W. Bangerth, M. Adams, N. Amato, S. Chirayath, J-L Guermond, G. Kanschat, P. Kuchment, J. Morel, J. Ragusa, and L. Rauchwerger, "Forward and inverse simulation capabilities for detection and imaging," Poster presented at the Academic Research Initiative Grantees Conference, Washington, D.C., April 6-9, 2009. See Document
  87. S. Chirayath, R. Metcalf, J. Ragusa, and P. Nelson, "Assessment of Proliferation Resistance Requirements for Fast-Reactor Fuel-Cycle Facilities," Proceedings of the 8th International Conference on Facility Operations - Safeguards Interface, Portland, Oregon, March 30 - April 4, 2008. See Document
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