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CV - TJvR - 2015

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CV - TJvR - 2015

  1. 1. Page 1 of 27 Updated: November 2015 Curriculum Vitae; Résumé: TJ van Rooyen
  2. 2. Page 2 of 27 Contents Areas of expertise & problem-solving abilities .................................................................. 3 Core competencies ..................................................................................................... 3 Abbreviations ........................................................................................................... 5 Personal details ......................................................................................................... 6 Tertiary Education ..................................................................................................... 7 Experience: Brief Overview ......................................................................................... 7 Experience: Detailed Overview ..................................................................................... 9 Membership of professional societies ........................................................................... 14 Selected Publications ................................................................................................ 16 Other publications and contributions............................................................................. 23 Lecturing activities................................................................................................... 23 Postgraduates led to M.Sc. degrees: 1999 – present .......................................................... 25 References ............................................................................................................. 26
  3. 3. Page 3 of 27 Johann van Rooyen - Engineering Scientist:  Radiation Protection  Radiation Dosimetry  Radiation Transport  Radiation Shielding  Nuclear Criticality Safety Areas of expertise & problem-solving abilities -- core competencies 1. Nuclear Reactor Scientist; Radiation Shielding Scientist; Nuclear Criticality Safety Scientist. 2. The use of the Radiation Transport, Shielding & Criticality codes MCNP6, SCALE to solve problems in the field of nuclear reactor science, the shielding of ionising radiation, and nuclear criticality safety. 3. Pre-Graduate and Postgraduate Education in the fields of Mathematical Science, Physical Science, Nuclear Physics, Nuclear Engineering, Radiation Shielding, and Nuclear Criticality Safety.
  4. 4. Page 4 of 27 4. Guiding postgraduates in MSc projects in the fields of radiation shielding, nuclear criticality safety, and nuclear reactor science. 5. Basic programming skills in Fortran 95; MathCAD used as main computational tool. 6. Radiation Protection – vast experience from past projects and job responsibilities. Theoretical & practical experience in this field. 7. Studying almost any technical topic, mastering it & production of associated operational software, recommendations, technical reports & training material -- textbook, slideshows, syllabus, etc. 8. Scientific programming in Fortran-95. Use of MathCAD for peripheral computations and mathematical modeling. 9. Writing & proofreading skills. 10. SARPA Accredited RP specialist in (1) Nuclear Reactor Radiation Protection, (2) Cyclotron Radiation Protection and (3) Radionuclide Radiation Protection.
  5. 5. Page 5 of 27 Abbreviations CARST Centre for Applied Radiation Science and Technology (at NWU) KNPS Koeberg Nuclear Power Station NECSA South African Nuclear Energy Corporation NORM Normally Occurring Radioactive Material NNR National Nuclear Regulator NRF National Research Foundation QA Quality Assurance RP Radiation Protection RPD RP Division SA South Africa SAQA South African Qualifications Authority SARPA Southern African Radiation Protection Association SARPS South African Radiation Protection Society SGB Standards Generating Body TENORM Technologically Enhanced Normally Occurring Radioactive Material NWU Northwest University UCT University of Cape Town UNAM University of Namibia US University of Stellenbosch UWC University of the Western Cape (Bellville) WITS University of the Witwatersrand
  6. 6. Page 6 of 27 Personal details Full Name: Theunis Johann van Rooyen Date of birth: 15 August 1958 ID-number: 580815 5145 080 Gender: Male Citizenship: South African Mail address PO Box 1288 IFAFI 0260 SOUTH AFRICA Tel: 082-829-8734 Fax: 012-305-5029 Employer Radiation and Reactor Theory Section Building P-1900 Necsa (South African Nuclear Energy Corporation) PO Box 582 PRETORIA 0001 SOUTH AFRICA === Email:johann.vanrooyen@necsa.co.za === 012-305-5029 (w) 082-829-8734 (m) 012-305-5166 (f)
  7. 7. Page 7 of 27 Tertiary Education 1977—1980: B.Sc. (Physics, Mathematics & Chemistry), University of Stellenbosch. Average mark: 70%. 1981: B.Sc. Honours (Physics), University of Stellenbosch. Average mark: 70%. 1986—1990: MSc in Nuclear Reactor Science, PotchefstroomUniversity (part-time, while working at Atomic Energy Corporation of South Africa1 and the utility ESKOM). Subject of thesis: The Optimisation of Radiation Shielding inside and Outside a Nuclear Reactor. Mark: Cum Laude. 2009 -- 2011: MSc Nuclear Engineering. NorthWest University (PotchefstroomCampus). Completed and passed 9 theoretical modules with marks ranging between 55% and 99%. Experience: Brief Overview 1984—1988 Atomic Energy Corporation of South Africa (AEC), Pelindaba. Positions held  Scientist-in-training;  Scientist;  Senior Scientist. Responsibilities  Radiation shielding design projects. 1 Today: NECSA – Nuclear Energy Corporation of South Africa.
  8. 8. Page 8 of 27 1988—1990 ESKOM, Megawatt Park, Gauteng, South Africa. Position  Professional Physicist. Responsibilities  Radiation shielding calculations;  Nuclear Criticality safety calculations …in support of the safe operation of the Koeberg Nuclear Power Station, SA. 1990—October2006 iThemba LABS2, Somerset West. (Situated near Somerset West, Western Cape, South Africa. Cyclotron, radionuclide production, radiotherapy, materials research & training centre; national facility.) Positions held  Radiation Protection Physicist. September 1990 – June 1997.  Acting manager: Radiation Protection Division. Facility Radiation Protection Officer (RPO). July 1997 – June 1998.  Manager: Radiation Protection Division; Facility RPO. June 1998 – December 2002.  Radiation Protection Specialist. January 2003 – October 2006. 2 Formerly: National Accelerator Centre (NAC).
  9. 9. Page 9 of 27 November 2006-- present Radiation and Reactor Theory (RRT) Section, Necsa (South African Nuclear Energy Corporation). 1. Chief scientist: Radiation Shielding & Nuclear Ctiticality Safety. Trainer of all new staff in specialised knowledge and expertise appointed in the above division. Manager of Staff Training Subsection in Necsa RRT. Experience: Detailed Overview January 1984—August1988 Employer: Atomic Energy Corporation of South Africa. Positions: Scientist-in-training, Scientist and Senior Scientist. Responsibilities: Radiation shield design projects. Majorprojects 1. Employ the discrete ordinates radiation transport codes ANISN and DOT-3.5 as well as point kernel codes PELSHIE and QAD-CG in many neutron/photon shielding and neutron moderator design projects. The more notable of these projects include: 2. Post-LOCA (“Loss of Coolant Accident”) dose rate determination throughout Koeberg PWR plant; study performed in collaboration with nuclear engineers from USA & UK. 3. Shield design of Pelindaba’s Neutron Radiography Facility. 4. The design of the local shielding around the radionuclide production target bombardment station at the National Accelerator Centre (NAC) 3, in collaboration with NAC staff. 5. The design of optimal moderator configurations for the moderation of neutrons from various neutron sources, with the aim of maximizing activation of an indium foil. 6. Shield design for a neutron transmutation doping facility. 7. Reactor coolant and PWR steam generator shielding studies. 3 Today: iThemba LABS.
  10. 10. Page 10 of 27 8. Several neutron activation safety studies. 9. Several radionuclide shielding projects, e.g. facets of HEPRO 60Co irradiator design. 10. Nuclear reactor shielding optimisation studies. 11. The development of several pre-processor and post-processor codes to function with major radiation transport codes such as ANISN and DOT. Training received 1. Nuclear Reactor Science training course. The 15 theoretical modules were presented during 1986 by the Reactor Theory Division of the AEC (Cum Laude). 2. Management development & technical report writing courses (1987-1988). Reasons for leaving AEC Better remuneration offer from ESKOM enabled me to move from a small 1½- bedroomed flat to a 3-bedroomed house, with wife & first baby. September 1988—August1990 Employer: ESKOM (Megawatt Park, Gauteng, South Africa). Position: Professional Physicist. Responsibilities  Radiation shielding calculations  Criticality calculations for nuclear fuel.  Information Technology equipment procurement & technical support. Projects 1. Used discrete ordinates radiation transport codes (such as ANISN and DOT) as well as point kernel codes (e.g. QAD-CG) in several Koeberg-related radiation shielding design projects. Also used the SCALE system to perform criticality, shielding and reactor fuel radionuclide inventory analyses. The more notable of these projects include:
  11. 11. Page 11 of 27 2. Pressurised nuclear reactor spent-fuel storage pool water level accident scenario analysis – nuclear power station blackout scenario. Calculation of increasing dose rates as water level of spent-fuel storage pool drops as a result of boiling after SFP cooling system pumps fail. 3. Spent fuel transport flask criticality analysis. 4. Reactor fuel radionuclide inventory calculations with ORIGEN-S. 5. Computer code development using Fortran. 6. Development of procedures. 7. Training of Koeberg staff in IBM MVS Job Control Language for Mainframe computer systems. Developed a comprehensive, 220-page manual for this purpose. 8. Training of Council for Nuclear Safety (CNS4) personnel in the use of the shielding code QAD-CG. 9. Reactor shielding benchmark calculations. 10. Nuclear reactor shielding optimisation studies. Complete M.Sc. on this topic (Cum Laude). Training received 1. Koeberg radiation safety training course. 2. Nuclear reactor theory course. 3. Selections from Koeberg's Nuclear Energy Training course. 4. Courses and symposia at the Council for Nuclear Safety5. 5. Several ESKOM management development courses. Reasons for leaving ESKOM 1. Preference for specialised, technical work. Did not want to be burdened with excessive management work at age of circa 30, because that would have adversely affected my technical core competencies; 4 Today: National Nuclear Regulator (NNR). 5 Today: National Nuclear Regulator (NNR).
  12. 12. Page 12 of 27 2. Strong dislike of Megawatt Park’s open floor plan office layout. Need privacy to concentrate, think deeply, and perform mathematical modeling. September 1990 — October 2006 Employer iThemba LABS, PO Box 722, Somerset West, 7129, South Africa. Positions 1. Radiation Protection Physicist. September 1990 – June 1997. 2. Acting head: Radiation Protection Division & Radiation Protection Officer (RPO). July 1997 – June 1999. 3. Head: Radiation Protection Division; Facility Radiation Protection Officer. June 1999 – December 2002. 4. Radiation Protection Specialist. January 2003 – present. Responsibilities 1. Radiation Safety training. Development of course material & presentation of monthly courses. Provide a Radiation Protection Training and Reference Manual to facility. 2. Radiation shielding calculations. 3. Developed and teach postgraduate course in Radiological Protection at University of Stellenbosch. 4. Developed and teach postgraduate courses in Radiological Protection at Northwest University (NWU). 5. Taught postgraduate course in Radiological Protection at University of the Western Cape (UWC). 6. Radiation Protection development work at facility. 7. Liaison with regulatory authorities. 8. Guidance of postgraduates in MSc projects in RP.
  13. 13. Page 13 of 27 9. Conceptual design of automated measurement systems that continually verify whether key Operating Technical Specifications (OTS) are met. 10. Compile report on effect of ionising radiation on electronics apparatus, and write computer code to determine lifetimes on electronic equipment types in radiation environments. 11. Study current best international RP practice from ICRP, NCRP, IAEA, IRPA, CFR & NRPB publications. Study RP legislation and regulations. Study RP journals. Keep abreast of international developments in RP philosophy and practice. Translate all these into concrete RP policies, training material, written safe working procedures (WSWPs), notices for posting, circulars and RP directives—suitably adapted to our institution. 12. Practical radiation work & supervision of dangerous radiation work. 13. Represent iThemba LABS at SARPA and SARPS professional RP societies. 14. Serve on Standards Generating Body (SGB) for RP as part of South African Qualifications Authority (SAQA) programme. 15. Visit to Ghana in April 2006 as Technical Expert on Dose Rate Calculations & Radiation Shielding Design. November 2006 -- present Radiation and Reactor Theory Section, Necsa (South African Nuclear Energy Corporation). Position held 1. Chief scientist: Radiation Shielding & Nuclear Criticality Safety. 2. Manager: Staff Development and Training in Necsa RRT. Responsibilitiesand projects 1. Hundreds of specialised technical analyses and technical reports for client groups within Necsa. Fields: Radionuclide production, Nuclear Medicine, Nuclear Waste, Mining Radiation Dose Rates, Nuclear Fuel, Nuclear Reactor related dose rate calculations. 2. Presentation of in-house training courses to new technical staff with postgraduate degrees.
  14. 14. Page 14 of 27 3. Supervising postgraduates -- mainly from NWU, UJ & WITS -- performing projects in nuclear radiation shielding, nuclear reactor modeling, radiation protection in mines, and nuclear criticality safety. 4. Presentation of an annual course in Radiation Shielding Theory, and the basics of the use of the Monte Carlo radiation transport code MCNP. 5. Lecturing at universities, as requested (average of 21 days per annum) -- WITS, UCT, NWU, UNAM and even UTH (University Teaching Hospital) in Lusaka, Zambia. In-service training received 1. MCNP course at AEC of SA, February 1998. Duration: 5 days. (Monte Carlo radiation transport code). 2. MCNP course, ESKOM, Megawatt Park, Gauteng. Duration: 8 days. December 2004. 3. MCNP course, presented by LANL personnel. iThemba LABS. March 2006. 4. MCNP Intermediate Level Course. München, Germany. October 2008. 5. Nuclear Criticality Safety Engineering Course, University of Tennessee, USA. September 2007. 6. SCALE Course, France, 2010. 7. FISPACT-2007 course, France, 2013. 8. Variety of management courses. 9. Variety of IT-related courses, e.g. ICDL course, and intermediate & Advanced MS OFFICE courses. 10. Many RP and Nuclear Reactor Science conferences & workshops in Southern Africa. 11. Variety of ISO 9000 courses & many NOSA & NOSA-style Occupational Health & Safety & Environment (SHEQ) courses. Membership of professional societies 1. South African Institute for Physics (SAIP).
  15. 15. Page 15 of 27 2. South African Radiation Protection Association (SARPA). 3. South African Council for Natural Scientific Professions. Registration number: Pr. Sci.Nat. 400281/87.
  16. 16. Page 16 of 27 Selected Publications VAN ROOYEN, TJ. 1987. A Calculation of the Time Dependenceof the Dose Rate in the LargeIrradiation Facility of the Safari-1 Research Reactor due to Neutron Activation Products Produced in the Core Box. ReportPIN-1033. Pelindaba, Pretoria: AEC of SA. 23 p. VAN ROOYEN, TJ. 1988. A calculation of the ambientdose equivalentrate present during the handlingof pieces of iron flux wire irradiated in the Safari-1 Research Reactor. Report PIN-1068. Pelindaba, Pretoria: AEC of SA. 17 p. VAN ROOYEN, TJ. 1988. Fluence Rates, Dose Rates, and HeatRelease Rates Inside and Behind VariousThicknesses of Lead Blocks Adjacent to the Safari-1 Research Reactor. Report PIN-1106. Pelindaba, Pretoria: AEC of SA. 23 p. VAN ROOYEN, TJ. 1989. The Design of an OptimalShield for an Intense (D-T) Neutron Source. ReportGNS-NFCS-0004. ESKOM, Megawatt Park, Gauteng, South Africa. VAN ROOYEN, TJ. 1990. The OptimalDesign of Shielding Insideand Outside a Nuclear Reactor. (M.Sc. thesis on shield optimisation.) VAN ROOYEN, TJ. 1991. PRE-ANISN, a Preprocessing Code for ANISN and other Radiation TransportCodes. Somerset West, South Africa: iThemba LABS. (NAC Report NAC/91–06, December 1991.) STEYN, GF;VAN ROOYEN, TJ; BINNS; PJ; HOUGH, JH; NORTIER, FM & MILLS, SJ. 1992. Design calculations for a local radiation shield of a radioisotope production target bombardmentstation. Nuclear Instruments and Methods in Physics Research A316 (1992), 128 – 133. NORTIER FM, BINNS PJ, HANEKOM J, PENNY MA, QUANTRILL RE, SMIT HA, VAN ROOYEN TJ & XULUBANA VMP. 1999. A Second Target Station for
  17. 17. Page 17 of 27 Radioisotope Production at the NAC. Posterpresented at the 8th International Workshop on Target Chemistry, St Louis, Missouri, USA, 24-27 June 1999. NORTIER FM, BINNS PJ, HANEKOM J, PENNY MA, QUANTRILL RE, SMIT HA, VAN ROOYEN TJ & XULUBANA VMP. 1999. A Second Target Station for the Bombardmentof semi-permanenttargets at the NAC. http://trshare.triumf.ca/~buckley/wttc/pdf/1999/p22.pdf VAN ROOYEN, TJ. 1993. BUCORST, a Code to prepare Burnup-dependent Multigroup Nuclear Reactor Source Terms. NAC ReportNAC/93-01. Somerset West, South Africa: iThemba LABS. VAN ROOYEN, TJ & DE BEER, GP. 1993. A Burnup-compensated Madland-Nix prompt fission neutron source term for multigroup nuclearreactor shielding calculations. Nuclear Science and Engineering, 114:87 – 101. VAN ROOYEN, TJ, HURWITZ, CM, DIRKSE, JAMT, MEYER, BR & MACKRIEL, DEG. 1996. Theanalysis of radiation doses recorded by the iThemba LABS’Area Radiation Monitoring System (ARMS). 36th Annual Congress of the South African Association of Physicists in Medicine and Biology, Pretoria, June 1996. VAN ROOYEN, TJ. 1996. A point-kernel method to determine the amountof a radionuclidein a radioisotope-production hotcell. 36th Annual Congress of the South African Association of Physicists in Medicine and Biology, Pretoria, June 1996. VAN ROOYEN, TJ. 1998. Report on Koeberg's Radiation Safety Programme. iThemba LABS, PO Box 722, SOMERSET WEST, 7129, South Africa. 5 p. Report prepared for NOSA. VAN ROOYEN, TJ. 1999. Radiation Safety Assessment of the INFRUITEC Irradiator. iThemba LABS, PO Box 722, SOMERSET WEST, 7129, South Africa. VAN ROOYEN, TJ. 2000. Review of ESKOM Report NSD-R99/001: Operator Risk dueto the use of 17x17 Westinghouse374 RobustFuel.
  18. 18. Page 18 of 27 VAN ROOYEN, TJ. 2000. Review of ESKOM Report NAAS-R99/014:Release Fraction Analysis for Westinghouse RobustFuel. VAN ROOYEN, TJ. 2001. Calculation of external dose rates next to containers filled with zirconia. KEGOPOTSAMENG, O & VAN ROOYEN, TJ. 2004. Evaluation and proposed redesign of radiation shielding at the RadionuclideProduction Facility at iThemba LABS. iThembaLABS, PO Box 722, SOMERSET WEST, 7129, South Africa. MATSIETSA, KI & VAN ROOYEN, TJ. 2004. Naturallyoccurring radioactive material (NORM) and associated radiation protection issues in selected minerals- extraction industries. iThemba LABS, PO Box 722, SOMERSET WEST, 7129, South Africa. VAN ROOYEN, 2004. Protection of electronic apparatusagainstdamageby ionising radiation. iThemba LABS, PO Box 722, SOMERSET WEST, 7129, South Africa. LUKHELE FM, BUTHELEZI EZ, STEYN GF, NDWANDWE OM & VAN ROOYEN, TJ. 2006. Design calculations for the local radiation shield of a radioisotope production target bombardmentstation – a comparative study. http://lxmi.mi.infn.it/~gadioli/Varenna2006/Proceedings/Buthelezi_Z.pdf VAN ROOYEN, TJ. 2006. The Science of Radiation Protection. iThemba LABS, PO Box 722, SOMERSET WEST, 7129, South Africa. 550 p. VAN ROOYEN, TJ & SIBIYA, T. 2007. Radiation Shielding Assessment for the HEPRO (Cape) IrradiatorOperating with a 2 Megacurie 60Co Source. Necsa RRT ReportRRT-SHLD-07-03. Necsa, PO Box 582, Pretoria, 0001, South Africa. VAN ROOYEN, TJ & SIBIYA, T. 2007. Radiation Shield Design for the Citrusdal Insect Irradiator. Necsa RRT Report RRT-SHLD-07-04. Necsa, PO Box 582, Pretoria, 0001, South Africa.
  19. 19. Page 19 of 27 VAN ROOYEN, TJ. 2007. Influence of 234U and 236U in Rig Target Plates on the 99Mo Production Rate in the SAFARI-1 Reactor at Necsa. Necsa RRT Report RRT- SHLD-07-06. Necsa, PO Box 582, Pretoria, 0001, South Africa. VAN ROOYEN, TJ. 2008. Threshold energies of emitted radiationsthat will produce nuclear recoils energetic enough to cause chemical bond rupture in radioactively labeled molecules employed in nuclearmedicine procedures, with specific application to the therapeutic radionuclides 103Pd/103mRh. NecsaRRT ReportRRT-SHLD-08-01. Necsa, PO Box 582, Pretoria, 0001, South Africa. VAN ROOYEN, TJ & KUPI, TG. 2008. Design of a local radiation shield for a radionuclideproduction beam target station. Necsa Report RRT-SHLD-08-03. Necsa, PO Box 582, Pretoria, 0001, South Africa. TJ van Rooyen. 5 February 2008. Threshold energies of emitted radiation quanta that willproducenuclearrecoils energetic enough to cause chemical bond rupture in radioactivelylabeledmolecules, withapplication to the therapeuticradionuclides 103Pd103mRh. Necsa Report RRT-FMR-08-03. TJ van Rooyen. 17 June 2008. Report on Collaboration withiThemba LABS, 26- 30 May 2008. NecsaReportRRT-FMR-08-04. TJ van Rooyen. 3 May 2007. Radiation ShieldingAssessmentfor the HEPRO (Cape) IrradiatorOperatingwitha 2 Megacurie60Co Source. Necsa Report. TJ van Rooyen. 12 February 2009. Conceptual design ofa new source holder for the Necsa calibration facilityfor radiation detectors. Necsa Report. TJ van Rooyen. 21 August 2008. Radiation Damageto Ion-ExchangeResin in an NTP RadionuclideProduction Hotcell. TJ van Rooyen. 7 September May 2007. Radiotoxicityfrom chemical bond rupture from recoil nuclei in nuclearmedicineapplications. Necsareport RRT-SHLD-07- 02.
  20. 20. Page 20 of 27 TJ van Rooyen, JA Koch & N Govender. 15 December 2009. Neutron-Induced Changesin the Aluminium-AlloyComposition of the Core-Box of the SAFARI-1 Reactor at Necsa. Necsa Report RRT-SAFA-REP-09039. TJ van Rooyen. 3 September 2009. Design of a Shielding Wall aroundthe NTP Decay Yard for RadioactiveWaste. Necsa report RRT-SHLD-REP-09003. TJ van Rooyen. 18 March 2010. Maximum SurfaceDose Rates on Rowsof RadioactiveWasteDrums in the NTP Decay Yard, thatwillmaintain the Dose Rate at the PerimeterFence at 2.5µSv/h. Necsareport RRT-SHLD-REP-10001. TJ van Rooyen. 15 April 2010. Dose Rates Around an NTP Type A70 Transport Containercontaining either16 Ci 99Mo or 18 Ci 131I. Necsa report RRT-SHLD- REP-10007. TJ van Rooyen. 7 July 2010. CriticalitySafetyAssessment of the New Layoutof the NTP Dissolver Hotcell, for the processing of LEU. Necsa report RRT-CRIT- REP-10002. TJ van Rooyen. 16 September 2010. Estimated Influence of 236U in Rig Target Plateson the 99Mo Production Rate. RRT-SHLD-MEM-10001. TJ van Rooyen. 24 June 2010. The impactof detailed beta-particlespectra on calculated electron depth-dose-distributionsand on bremsstrahlungproduction. Necsa RRT Report. TJ van Rooyen. 16 June 2010. RRT-SHLD-REP-10008. Dose Rate Calculations for the New NTP 192IrHotcell. Necsa Report. TJ van Rooyen. 2010. Physics of Nuclear Reactor Operation—PartII. TJ van Rooyen. 11 November 2010. Dose Rates Around Different NTP Type A PackagesContaining99Moor 131I. Necsareport RRT-SHLD-REP-10013. TJ van Rooyen. 1 August 2010. Concrete Drum ShieldingRequirementsfor 99Mo Production Waste at NTP. Necsa report.
  21. 21. Page 21 of 27 TJ van Rooyen. 28 March 2011. Energy Deposition Rate, Dose Rate and Shielding Requirementsfor a 4000 Ci 99Mo Source in the New Dissolver Hotcell at NTP. Necsa report RRT-SHLD-REP-10010. TJ van Rooyen. 28 March 2011. Absorbed Dose Rates from 99Mo in AGMP-1M ColumnsUsed by NTP. RRT-SHLD-REP-11008. TJ van Rooyen. 25 June 2012. Design function of different materialsin NTP's “BEATRICE”transportpackage. Technical memorandum. TJ van Rooyen. 29 August 2012. Dose rates outside NTP Hotcell-2 holding the solid radioactivewastefrom 53760 processed Moly-production TargetPlates. Necsa report RRT-SHLD-REP-12003. TJ van Rooyen. 30 November 2011. Doses Around the NTP Lead-WalledHotcells 11, 19 and 20 in the Eventof CriticalityAccidents. NecsaReport RRT-CRIT-REP- 11001. TJ van Rooyen. 24 December 2011. Source Term and Dose Assessment in the Eventof a CriticalityAccidentin an MTR Fuel ManufacturingFacility. Necsa report RRT-CRIT-REP-11004. TJ van Rooyen. 25 March 2011. The Irradiation of 176Yb for the Production of 177Lu: Yield, Dose-Rates and Shielding Requirements. Necsareport RRT-SHLD- REP-10014. TJ van Rooyen. 8 March 2012. Maximum Activitiesof 192Ir, 75Se, 60Co and 137Cs that maybe transported in NTP Type A Transport Packages29/15/A-96, 29/30/A- 96 and 29/44/A-96. Necsareport RRT-SHLD-REP-12002. TJ van Rooyen. 25 November 2011. Doses Around the Concrete-Walled NTP Hotcells 2 and 3 in the Event of CriticalityAccidents. Necsareport. TJ van Rooyen. 22 October2009. Dose Rates from SpentFuel Assembliesto be Shipped in 2010. Necsareport RRT-SHLD-REP-09005.
  22. 22. Page 22 of 27 TJ van Rooyen. 22 January 2010. CriticalitySafetyAssessment for the Uranium- Waste Frame-Rack (UWFR)in NTP Hotcell 3. Necsa report RRT-SHLD-REP- 10002. TJ van Rooyen. 7 August 2013. Shielding andDose Rate Calculationsfor 8 GBq 177Lu. RRT-SHLD-REP-13006. TJ van Rooyen. 19 February 2013. Radiation Dose to Workers Following Hypothetical Fuel Damage in a Materials Testing Reactor (MTR). Necsa Report RRT-SHLD-REP-13001. TJ van Rooyen. 7 August 2013. Shielding and Dose Rate Calculations for 8 GBq 177Lu. Necsa Report RRT-SHLD-REP-13006. TJ van Rooyen. 15 August 2013. Dose Rate Calculations for a Type-A Container with 10 Ci 99Mo. Necsa Report RRT-SHLD-REP-13005. TJ van Rooyen. 15 January 2014. Maximum activity of 192Ir that may be safely handled in NTP Hotcell 2. Necsa Report RRT-SHLD-REP-14001. TJ van Rooyen. 3 November 2014. Radiological Safety of Producing 223Ra Generators by Irradiating 226Ra in a Nuclear Reactor. Necsa Report RRT-SHLD- REP-14005. TJ van Rooyen. 24 November 2014. Dose Calculations for an Operator Drenched in Primary Coolant Leaking from a Nuclear Reactor. Necsa Report RRT-SHLD- REP-14002. TJ van Rooyen. 25 September 2015. Transport and Shielding of Ionising Radiation. (Postgraduate University Textbook.) TJ van Rooyen. 4 November 2015. Shield Design Calculations for the SRSS Service Station for the Silicon Roller Assembly (SRA) at the SAFARI-1 Reactor. Necsa Report RRT-SHLD-REP-15003.
  23. 23. Page 23 of 27 TJ van Rooyen. 20 November 2015. Shield Design for the Disposal of a 300 Ci 90Sr Source. RRT-SHLD-REP-15004. TJ van Rooyen. 10 December 2015. Shield Design Calculations for the New Neutron Radiography Facility at Necsa. Necsa Report RRT-SHLD-REP-15005. Additionally:  Numerous papers & posters presented at conferences.  Numerous Mathematical models of radiation protection & transport problems.  Numerous Fortran peripheral shielding & data analysis codes. Contributions to the Radiation Safety Information ComputationalCenter (RSICC), Oak Ridge NationalLaboratories,USA VAN ROOYEN, TJ. 1993. BUCORST: A code to prepare Burnup-dependent Multigroup Nuclear Reactor Source Terms. RSICC Code Package PSR-339. VAN ROOYEN, TJ. 1993. PRE-ANISN: A Preprocessing Code for ANISN and Other Radiation Transport Codes. RSICC Code Package PSR-332. Other publications and contributions Presented numerous papers and posters on the subject of radiological protection at conferences and workshops in Southern Africa. Lecturing activities 1. Developed & present a postgraduate course on Radiation Transport & Shielding & Radiation Protection at Stellenbosch University, South Africa. Presented 1991 – 2006. 2. Developed & present a postgraduate module on Radiological Protection at Northwest University (NWU), South Africa. 1998 – 2007. 3. Developed & present a postgraduate module on Radiological Protection at the University of the Western Cape, Bellville, South Africa. 2004 – 2006.
  24. 24. Page 24 of 27 4. Presented Nuclear Physics 3 at the University of the Western Cape (UWC) in 1996. 5. External examiner to several M.Sc. dissertations in (1) Probabilistic Safety Assessment (PSA), (2) Nuclear Reactor Science, (3) Reactor Core Management Calculations, (4) Radiation Shielding and (5) Land rehabilitation following TE- NORM activities. 6. Presented 2-day Radiation Protection Officer training courses to many hundreds of candidates throughout all provinces of South Africa, from year 2000 – October 2006. 7. Radiation Protection & Transport lectures, WITS University, 2007. 8. Developed and taught postgraduate module: Radiation Transport, Shielding & Criticality Safety, NorthWest University (Mafikeng Campus), 2008 – present. 9. Developed and taught postgraduate module: NuclearPhysics for Nuclear Engineers. NorthWestUniversity (PotchefstroomCampus), 2008 – 2010. Presented for PostGraduateDiploma in Nuclear Engineering, at Koeberg Nuclear Power Station, ESKOM, Western Cape, South Africa. 10. Postgraduate teaching at UNAM (Windhoek), NWU (Potchefstroom) and UCT. Subjects: Radiation Protection, Radiation Transport & Radiation Shielding. Years span 2013 to the present. Textbooks authored 1. TJ van Rooyen. The Science of Radiation Protection. 2. TJ van Rooyen. Nuclear Physics for Nuclear Engineers. 3. TJ van Rooyen. Transport and Shielding of Ionising Radiation. Website www.radiation-shielding.co.za The above three textbooks, as well as several informative slideshows, are available from the above website as free downloads to all interested persons.
  25. 25. Page 25 of 27 Postgraduates led to M.Sc. degrees: 1999 – present 1. Ms Lesego Mogapi. 2000. M.Sc. in Environmental RP. Northwest University. Presently at PMBR, Centurion. Tel: 012-677-9467. 2. Mr Wilbert Leotwane. 2001. Co-leader for M.Sc. in Probabilistic Risk Assessment (PRA). Northwest University. 3. Ms Refilwe Letebele. 2001. Co-leader for M.Sc. in Radioactive effluent release management. Presently at Koeberg, ESKOM. Northwest University. Tel: 021- 550-4911. 4. Ms Naomi Mokoto. 2001. Co-leader for M.Sc. in Environmental RP around a nuclear power station. Presently at Koeberg, ESKOM. Northwest University. Tel: 021-550-4911. 5. Mr Rothi Mashigo. 2001. M.Sc. in Re-Programming a Radiation Shielding Code from Fortran-4 to Structured Fortran-95 & Benchmarking it. Northwest University. (Deceased – tragic car accident early 2002). 6. Mr Senoelo Pheto. 2001. M.Sc. in radiation shielding. 7. Ms Kgomotso Matsietsa. 2003. MSc dissertation in RP against sources of NORM (Naturally Occurring Radioactive Material) was completed in 2003, but not accepted by Northwest University (NWU) – the candidate was too dependent on my input & failed to develop independent problem-solving skills. 8. Ms Onalenna Kegopotsemang. 2004. M.Sc. in Radiation Protection at a Particle Accelerator Radionuclide Production Facility. Completed & accepted in 2003. Northwest University. Tel: 082-368-4653. 9. Mr Tebogo Kupi. 2008. MSc in shield design for a radionuclide production target bombardment facility at a particle accelerator facility, using the code MCNPX. Dissertation handed in December 2007. 10. Mr Thomas Sibiya. 2008. MSc in Radiation Protection. Radiation shield design & verification for 3 irradiator facilities using strong 60Co sources. WITS University.
  26. 26. Page 26 of 27 11. Ms Bessie Makgopa. 2008. Co-leader for Masters Degree in Nuclear Engineering, NorthWest University (Potchefstroom Campus). Dissertation topic: MCNP Model for rig to test PBMR fuel spheres. 12. Mr Willem Bekker. 2009. MSc in Radiation Protection. WITS University. Topic: Modelling in-building radiological consequences of a release of radio- nuclides to reactor coolant and the atmosphere, at a Materials Test Reactor (MTR). 13. Mr Nicolin Govender. 2010. MSc in Physics Energy Studies. Field: Nuclear Reactor Modelling. University of Johannesburg. 14. Mr Eric Chinaka. 2014. MSc in Physics Energy Studies. Field: Radiation Shielding in Diamond Detection. University of Johannesburg. References  Dr Djordje Tomasvic, Necsa, South Africa. Radiation & Reactor Theory Section. Email: djordje.tomasevic@necsa.co.za  Prof John Carter, WITS Schoolof Physics, University of Witwatersrand, Johannesburg, South Africa. carterj@physics.wits.ac.za  Prof FB Waanders, Pr. Eng., Pr. Sci.Nat. Schoolof Chemical and Minerals Engineering North West University (Potchefstroomcampus) Potchefstroom 2531 South Africa Tel: 018-299-1994 Fax: 018-299-1535 Frans.Waanders@nwu.ac.za  Dr Bismark Tyobeka CEO: NNR, Centurion, Gauteng, South Africa. Tel: 012-677-9414.  Dr Tobie Kotze Department Medical Physics University of Cape Town Cape Town
  27. 27. Page 27 of 27 South Africa Email: Tobie.Kotze@uct.ac.za  Mr Senoelo Pheto, NNR, Centurion, South Africa. Email: SPheto@nnr.co.za  Dr Iyabo Usman, WITS.  Mr James Larkin, WITS.  Prof James Oyedele, UNAM.  Dr Bismark Tyobeka, CEO: NNR.  Mr Zukile Zibi, TIA.

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