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Safety Assessment Education and Training (SAET)

Safety Assessment Education and Training (SAET).

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Safety Assessment Education and Training (SAET)

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  1. Safety Assessment Education and Training (SAET) Safety Assessment Knowledge for Competency and Capacity BuildingTwo Week Workshop onEssential Safety Assessment Knowledge:SAFETY ANALYSIS SERIES: INTRODUCTION TO LEVEL 1 AND LEVEL 2 PSA3 – 14 October 2011The Abdus Salaam International Centre for Theoretical Physics, Trieste, Italy

  2. SAFETY ANALYSIS SERIES • OTHER WORKSHOPS 2011-2012 • Generic Reactor Safety Review Methodology • Introduction to DSA and PSA • Integrated Risk Informed Decision-Making (IRIDM) • Principles of Defence in Depth • Introduction to Level 1 PSA • Introduction to Level 2 PSA • DSA Methodology (Design Basis) • Severe Accident Analysis • _______________________________________________________ • *Workshop durations are of 3-5 days each. Venues to be announced.

  3. THE SAFETY ASSESSMENT EDUCATION AND TRAINING PROGRAMME (SAET) The Safety Assessment Education and Training (SAET) Programme has been designed to support the Member States with development of required safety assessment capacity and competency. The Programme provides for courses and training necessary to achieve knowledge of safety requirements associated with the design and operation of nuclear facilities, and focuses on development of specialized knowledge essential for assessment and evaluation of safety including performance of safety analyses. SAET takes its roots from the IAEA Safety Standards, especially the Fundamental Safety Principles and the Safety Assessment for Facilities and Activities Requirements. The SAET programme content is based on international best practices and expertise. It sets high educational standards and its elements are compatible with academic course requirements. The training programme addresses education and training needs for a wide range of personnel, from those with little or no experience in safety assessment to those seeking to gain specialized expertise in certain areas of safety assessments. Incorporating a broad scope of safety assessment training modules, the multi-level programme is organized to accommodate the training of staff from differing professional backgrounds and educational levels. The safety assessment knowledge is organized in a modular way, so that training programmes for safety analysts, for professionals focusing on regulatory reviews, as well as for management and other decision-making personnel can be tailored based on actual needs. Essential Knowledge Fundamentals of Safety Assessment Integrated Risk-Informed Decision-Making Deterministic Safety Assessment Probabilistic Safety Assessment Practical Applications Design Basis Analysis Level 1 PSA Level 2 PSA Beyond Design Basis Analysis Level 3 PSA

  4. The workshop is intended for representatives of regulatory authorities, TSOs and plant operators from countries developing new or expanding existing nuclear power programmes seeking to enhance their knowledge of safety assessment. • TOPICS OF THE WORKSHOP • I. Introduction to Level 1 PSA • Introduction to PSA • Basic concepts and techniques • Level-1 PSA organization, management and tasks outline • Level-1 PSA tasks • Analysis of initiating events and accident sequences modelling • System analysis • Exercices (FTs, ETs, MCSs, booleanlogic, etc) • Component reliability and initiating event frequency analysis • Analysis of dependencies including common cause failures • Human Reliability Analysis • PSA quantification and analysis of results • PSA software • Probabilistic analysis of internal hazards • Fire PSA • Flood PSA • PSA for other internal hazards • Probabilistic analysis of external hazards • Introduction to Seismic PSA • PSA for other External hazards • PSA for low power and shutdown operation modes • PSA and DSA • Role of deterministic calculations in PSA • Integration of deterministic and probabilistic safety assessment • Use of PSA • Applications of PSA by NPP Operators • Living PSA and Risk Monitors • Applications of PSA by designers • Regulatory uses of PSA • Risk informed decision making • Recent IAEA publications in the area of PSA and IRIDM • Practical Demonstrations on Level 1 PSA model /codes

  5. TOPICS OF THE WORKSHOP (CONT.) II. Introduction to Level 2 PSA Overview of Level 2 PSA • Introduction to Level-2 PSA • Level 2 PSA Process - Major Tasks & Interfaces Role of Level 2 PSA concepts in Risk-Informed Regulation Level 2 PSA Process Level 2 PSA project arrangements Overview of Severe Accident Behaviour • Chronology of events and governing phenomena associated with accidents involving severe physical damage to a nuclear reactor core. • Technical foundation for physical principles of severe accident progression and containment performance for the purposes of Level 2 PSA. • Melt in vessel retention Sample Calculation of Severe Accident Progression • Chronological progression of, and major phenomena associated with, severe accidents from a sample calculation for a Boiling Water Reactor (BWR) • References to BWR experimental data sources Containment performance • LWR Containment Designs. • Possible containment failure modes and computational models for estimating performance limits. • Data requirements and analyses necessary for defining realistic containment failure criteria. Deterministic Analysis of Fission Product Release • Basic principles and phenomena governing fission product release from fuel, transport through the reactor coolant system and containment, and ultimate release to the environment during severe accidents. • Evaluation of fission product source terms on a plant-specific basis. • Use of computer simulations of postulated severe accidents to develop the knowledge necessary for evaluating plant behavior and containment performance. Probabilistic Analysis - Logic Models, Quantification and Uncertainty • Level-1/2 Interface • Containment event trees • Techniques for quantifying basic events within the CET • The principal of a “release category” • Grouping or “binning” pathways through a CET that represent accidents progressions, which would result in a similar fission product source term • Sensitivity analysis and uncertainty analysis. Format & Content of typical Level 2 PSA Results • Typical metrics for expressing the results of a Level 2 PSA • Documentation and interpretation of Level-2 PSA results IRIDM and Level-2 PSA Applications • Risk informed decision making approach • Level-2 PSA applications Exercises on Level-2 PSA Safety Assessment and Verification with Level 2 PSA Overview of Level 3 PSA: Assessment of off-site consequences

  6. THE SAFETY ASSESSMENT EDUCATION AND TRAINING PROGRAMME Present Workshop: SAFETY ANALYSIS III : INTRODUCTION TO LEVEL 1 AND LEVEL 2 PSA Essential Knowledge I. Fundamentals of Safety Assessment II. Deterministic Safety Assessment III. Probabilistic Safety Assessment Practical Applications II.B - Design Basis Analysis II.C - Beyond Design Basis Analysis III.B - Level 2 PSA III.A - Level 1 PSA III.C - Level 3 PSA For more information contact : M. Mellinger-Deroy (m.mellinger@iaea.org

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