The BEMUSE [1] (Best Estimate Methods - Uncertainty and Sensitivity Evaluation) Programme has been promoted by the Working Group on Accident Management and Analysis (GAMA) and endorsed by the Committee on the Safety of Nuclear Installations (CSNI). The high-level objectives of the work are: • To evaluate the practicability, the quality and the reliability of Best-Estimate (BE) methods including uncertainty evaluation in applications relevant to nuclear reactor safety; • To promote the use of BE-Methods by the regulatory bodies and the industry. Operational objectives include an assessment of the applicability of best-estimate and uncertainty methods to integral tests and their use in reactor applications. The scope of the Programme is to perform Large Break Loss-Of-Coolant Accident (LBLOCA) analyses making reference to experimental data and to a Nuclear Power Plant (NPP) in order to address the issue of the capabilities of computational tools including scaling/uncertainty analysis. The justification for such an activity comes from the consideration that a wide spectrum of uncertainty methods applied to BE codes exists and is used in research laboratories, but their practicability and/or validity is not sufficiently established to support general use of the codes and acceptance by industry and safety authorities. The consideration of the BE codes and uncertainty evaluation for Design Basis Accident (DBA), by itself, shows the safety significance of the proposed activity. End users of the results are expected to be the industry, the safety authorities and the research laboratories. The Phase II of BEMUSE Programme is connected with the re-analysis of the Experiment L2-5 performed in the LOFT (Loss Of Fluid Test) facility in June 1982. Fourteen participants coming from the following thirteen organizations have taken part in the Phase II of the Programme.
BEMUSE Programme. Phase 2 report : re-analysis of the ISP-13 exercise, post test analysis of the LOFT L2-5 test calculation
D'AURIA, FRANCESCO SAVERIO;
2006-01-01
Abstract
The BEMUSE [1] (Best Estimate Methods - Uncertainty and Sensitivity Evaluation) Programme has been promoted by the Working Group on Accident Management and Analysis (GAMA) and endorsed by the Committee on the Safety of Nuclear Installations (CSNI). The high-level objectives of the work are: • To evaluate the practicability, the quality and the reliability of Best-Estimate (BE) methods including uncertainty evaluation in applications relevant to nuclear reactor safety; • To promote the use of BE-Methods by the regulatory bodies and the industry. Operational objectives include an assessment of the applicability of best-estimate and uncertainty methods to integral tests and their use in reactor applications. The scope of the Programme is to perform Large Break Loss-Of-Coolant Accident (LBLOCA) analyses making reference to experimental data and to a Nuclear Power Plant (NPP) in order to address the issue of the capabilities of computational tools including scaling/uncertainty analysis. The justification for such an activity comes from the consideration that a wide spectrum of uncertainty methods applied to BE codes exists and is used in research laboratories, but their practicability and/or validity is not sufficiently established to support general use of the codes and acceptance by industry and safety authorities. The consideration of the BE codes and uncertainty evaluation for Design Basis Accident (DBA), by itself, shows the safety significance of the proposed activity. End users of the results are expected to be the industry, the safety authorities and the research laboratories. The Phase II of BEMUSE Programme is connected with the re-analysis of the Experiment L2-5 performed in the LOFT (Loss Of Fluid Test) facility in June 1982. Fourteen participants coming from the following thirteen organizations have taken part in the Phase II of the Programme.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
