IAEA-169 v\ ic. ..t FISSION PRODUCT NUCLEAR DATA IFPND) VOL.I PROCEEDINGS OF A PANEL ON FISSION PRODUCT NUCLEAR DATA ORGANIZED BY THE INTERNATIONAL ATOMIC ENERGY AGENCY AND HELD IN BOLOGNA, 26-30 NOVEMBER 1973 tfAr ~ A TECHNICAL REPORT PUBLISHED BY THE '^.k INTERNATIONAL ATOMIC ENERGY AGENCY, VIENNA, 1974 PLEASE BE AWARE THAT ALL OF THE MISSING PAGES IN THIS DOCUMENT WERE ORIGINALLY BLANK The IAEA does not maintain stocks of reports in this series. However, microfiche copies of these reports can be obtained from INIS Microfiche Clearinghouse International Atomic Energy Agency Kdrntner Ring 11 P.O. Box 590 A-1011 Vienna, Austria on prepayment of US S0.65 or against one IAEAmicrofiche service coupon. F R EWORD Recent reactor safety investigations have accentuated the importance of fission products and intensified the need for detailed studies of their nuclear properties. This led the IAEA, under the guidance of its International Nuclear Data Committee, to convene a Panel Meeting of specialists to review, for the first time, the requirements for fission product nuclear data (FPND) in the light of present knowledge. The size of the meeting which was attended by more than 60 participants from 17 Member States and three international organizations illustrated the importance and magnitude of national efforts spent on FPND research. Sixteen internationally coordinated review papers distributed to participants before the meeting covered all aspects of use, status and requirements of FPND. They formed the basis for stimulating discussions between users, measurers and evaluators of PPND and led to numerous recommendations regarding future FPND work. The proceedings of this panel are published in two parts. Part 1 consists of two volumes and contains all the review papers presented at the panel; the sequence of the paper numbers does not correspond to the sequence of their presentation (see panel programme). The historical development that led to the holding of this meeting and the scope of the panel are set out in detail in the "Introduction" (review paper no. la). A detailed summary of the panel's observations, conclusions and recommendations is given at the end of volume 2 and is followed by detailed tables in which required and achieved data accuracies are compared (Appendices A1-A5). Part 2 of the proceedings (volume 3) contains selected contributions to review papers. This part is being distributed only in a limited number of copies. The individual contributions are referred to at the end of review papers. The scientific secretaries wish to express their deep appreciation to the panel participants for their very efficient cooperation during the meeting as well as thereafter during the preparation of the proceedings. LIST OF ABBREVIATIONS BWR Boiling water reactor CCDN Centre de Compilation des Donnees Nucl6aires NDCC = Neutron Data Compilation Center (of NEA) EANDC = European-American Nuclear Data Committee FP = Fission Product FPD = Fission product nuclear data FRO = Swedish zero power fast reactor TGR = High temperature gas cooled reactor IAEA International Atomic Energy Agency INDC = International Nuclear Data Committee LMFBR Liquid Metal fast breeder reactor ND = Nuclear data NDS = Nuclear Data Section of the IAEA NEA Nuclear Energy Agency ORELA Oak Ridge linear accelerator PFR = Prototype fast reactor PWR m Pressurized water reactor RP Review paper EPI = Rensselaer Polytechnic Institute WRENDA World Request List for Neutron Data Measurements Panel on Fission Product Nuclear Data, Part 1: REVITEW PAPERS AND OBSERVATICNS, CCNCLUSICNS AND RECIOMMENDATIONS OF THE PANEL Table of uontents Volume 1: Panel Programme ..... 1 Review Paper No. 1 a . 5 Mo Lammer Introduction Review Paper No. 1 b . 9 S . Valente List of Compilations, Evaluations and Computer Codes of F.P.NoDO Review Paper No. 2 . 29 MIR. Iyer, D. N Sharma, A.Ko Ganuly Fission Product Nuclear Data (FPND)and Environmental Aspects of Nuclear Fuel Cycle Review Paper Noo 3 ... ... ... 51 J . G. Tyror The Importance of Fission Product Nuclear Data in the Physics Design of Power Reactor Cores Review Paper No. 4 . 83 G. Devillers Importance of Fission Product Nuclear Data. for Engineering Design and Operation of Reactors- Review Paper No. 5 ...... .. 163 W.Jo Maeck Fission Product Nuclear Data Requirements for the Determination of Nuclear Fuel Burnup Review Paper No. 6 ........ o o . .1 91 C. Weitkamp Importance of Fission Product Nuclear Data for Safeguards Techniques Review Paper No. 7 ... o. 213 E. Merz and M, Laser Importance of Fission Product Nuclear Data for Fuel Handling Review Paper No. 8 . o. 225 ½U.KoCo KUhn and EoG. Niemann Importance of Fission Product Nuclear Data (FPN D) in Life Sciences, Agrlculture and Industrial Technologies Review Paper Lo.0 9 .g . O O O O 231 E. Lo Alpen Use of Fission Product Nuclear Data in Life Sciences Review Paper No. 10 . 0O . 235 P. Ribon and Jo Krebs Status of Neutron Cross-Sections of Fission Product Nuclides Review Paper No0 lla o o O * o o0 0 o0 O 0. 285 VoH. Walker Status of Fission Product Yield Data for Thermal Reactors Review Paper Noo llb . o . 353 J.C- Cuninghame Review of Fission Product Yield Data for Fast Neutron Fission Volume 2: Review Paper No0 12 . o . Go Rudstam Status of Decay Data of Fission Products Review Paper No. 13 0 0 0 33 S. Amiel Status of Delayed Neutron Data Review Paper No. 14 0 0 0 0 0 53 ' MD Bustraan Integral Determination of Neutron Absorption by Fission Products 115 Review Paper No0 15 0 0 0 0 0 . Mo Lott Residual Power Due to Fission Products Review Paper Noo 16 . 163 Ao.R. de L.f.usgrove, J.Lo Cook, G.Do Trimble Prediction of Unmeasured Fission Product Yields Summary . .. .o 201 Observations, Conclusions and Recommendations of the Panel Appendix A 1 .. o .. 265 FP Chain yields; Comparison: Status - User Requirements Appendix A 2 . ..... .. 277 Independent and Cumulative Fission Yields; Comparison: Status - User Requirements Appendix A 3 .... a.. 297 FP Decay Data; Comparison: Status - User Requirements Appendix A 4 . 311 FP Neutron Reaction Cross Sections; Comparison: Status - User Requirements Appendix A 5 . .O 323 FP Decay Heat List of Subgroup Members . .O. a . 329 List of Participants -331 Note: Volume 3 of these Panel proceedings contains "Selected Contributions to Review Papers", as indicated at the end of each review paper. IAEA Panel on Fission Product Nuclear Data., Bologna, 26-30 November 1973 Scientific Secretaries: M. Lammer ) Nuclear Data Section J.Jo Schmidt) Div. of Research & Laboratories, IAEA PROGRAMME MONDAY, 26 NOVEMBER Morning Opening and Organization of the Panel Review 1 a M. Lammer Introductory talk IAEA Review 1 b S. Valente List of compilations, CCDN Saclay evaluations and computer codes of FPND (no oral presentation) SESSION I: FPND user needs in application fields Chairman: R.H. Flowers Review 3 J.G. Tyror Importance of FPND in the ARE Winfrith physics design of power reactor cores Discussion Review 4* C. Devillers Importance of FPND for CEN, Saclay engineering design and operation of reactors Report M.Ya. Kulakovsky USSR survey on topic of FEI, Obninsk review 4 Discussion Review 5 W.J. Maeck FPND requirements for Allied Chem. Corp. determination of nuclear fuel Idaho Falls burnup Discussion * Presented by M. Lott 1 Report R.E. Schenter Report on CSEWG Task Force on Hanford Engg. "Nuclear Data for Fission Development Lab. Product Decay Heat and Burnup Calculation" Discussion Afternoon Review 6 C. Weitkamp Importance of FPND for safe- KFK guards techniques Discussion Chairman: E. Merz Review 7 E. Merz Importance of FPND for fuel KFA Juelich handling Discussion Review 2 A.K. Ganguly FPND and environmental aspects BARC, Bombay of the nuclear fuel cycle Discussion TUESDAY, 27 NOVEMBER Morning SESSION I: (continued) Review 8 W.K.G. Kuehn Importance of FPND in life E.G. Niemann sciences, agriculture and Inst. f. Strahlen- industrial technologies botanik, Hannover Review 9 E.L. Alpen Use of FPND in life sciences Battelle Northwest Discussion General discussion on the international cooperation in the exchange and dissemination of FPND information. SESSION II: Status of fission product yield data, compilations and evaluations Chairman: W.J. Maeck Review 15 M. Lott Residual power due to fission CEN, Cadarache products Discussion 2 Review 16 A.R. de L. Musgrove Prediction of unmeasured fission J.L. Cook, G.D. Trimble product yields AAEC Lucas Heights Discussion Afternoon Review 1la W.H. Walker Status of fission product yield AECL, Chalk River data for thermal reactors Discussion Review llb J.G. Cuninghame Review of fission product yield AERE, Harwell data for fast neutron fission Report W.J. Maeck New measurements of fast fission yields Discussion Chairman: B.F. Rider Discussion Formation of subgroups and selection of chairmen, secretaries and members: Subgroup 1: Cumulative yields Subgroup 2: Independent yields Subgroup 3: Neutron cross-sections Subgroup 4: Decay data Subgroup 5: Delayed neutron data Subgroup 6: International cooperation in the exchange and dis- semination of FPND information. WEDNESDAY, 28 NOVEMBER Morning SESSION II continued Discussion on user needs versus data status: fission product yields Afternoon SESSION III: Status of fission product decay data and delayed neutron data Chairman: A.K. Ganguly Review 12 G. Rudstam Status of decay data of fission Studsvik products Discussion 3 Review 13 S. Amiel Status of delayed neutron data Soreq Nucl. Res. Centre Report B.P. Maksyutenko USSR activities in the field FEI, Obninsk of delayed neutron data Discussion Discussion on user needs versus data status: delayed neutron data THURSDAY, 29 NOVEMBER Morning SESSION III continued Discussion on user needs versus data status: decay data SESSION IV: Status of neutron reaction cross-sections of fission products Chairman: V. Benzi Review 10 P. Ribon Status of neutron reaction cross- CEN, Saclay sections of fission product nuclides Discussion Afternoon Review 14 Mo Bustraan Integral determination of Petten neutron absorption of fission products Discussion Report L.P.