MUSA
MANAGEMENT AND UNCERTAINTIES OF SEVERE ACCIDENTS
Informazioni Generali
- Coordinatore:
- CIEMAT - CENTRO DE INVESTIGACIONES ENERGETICAS, MEDIOAMBIENTALES Y TECNOLOGICAS (Spagna)
- Responsabile:
- MASCARI FULVIO - NUC-ENER-SIC (BO-VIA DEI MILLE)
- Ruolo ENEA:
- PARTNER
- Sito WEB:
- https://www.musa-h2020.eu
Programmi Europei
- Programma:
- HORIZON 2020 - Euratom -> Euratom fissione (RIA - Research and Innovation Action)
Descrizione e Attività
Descrizione Generale
In the current state of maturity of severe accident codes in terms of phenomena addressed and extensive validation conducted, the time has come to foster BEPU, Best Estimate Plus Uncertainties, application in the severe accident (SA) domain, and accident management (AM). The advantages with respect to deterministic analysis are known: avoid adopting conservative assumptions in the model and allow identifying safety margins, quantify likelihood of reaching specific values and, through the distribution variance provide insights into dominating uncertain parameters.The overall objective of the Management and Uncertainties of Severe Accident (MUSA) project is to assess the capability of SA codes when modelling reactor and SFP (Spent Fuel Pool) accident scenarios of Gen II and III. To do so UQ (Uncertainty Quantification) methods are to be used, with emphasis on the effect of already-set and innovative accident management measures on accident unfolding, particularly those related to ST (Source Term) mitigation. Therefore, ST related Figures Of Merit (FOM) are to be used in the UQ application. The MUSA project proposes an innovative research agenda in order to move forward the predictive capability of SA analysis codes by combining them with the best available/improved UQ tools and embedding accident management as an intrinsic aspect of SA analyses.MUSA develops through key activities which also describe the main outcomes foreseen from the project: identification and quantification of uncertainty sources in SA analyses; review and adaptation of UQ methods; and testing such methods against reactor and SFP accident analyses, including AM. Given the focus of FOM on source term, the project will identify variables governing ST uncertainties that would be worth investigating further. All the ingredients necessary to conduct the project are already available: analytical tools, experimental data, postulated reactor and SFP scenarios and, technical and scientific competences.
Attività svolta da ENEA
L'ENEA è coinvolto in proporzioni diverse in tutti i work package. In particolare contribuirà:
. Nel WP2 all'identificazione e quantificaione delle sorgenti di incertezza oer GEN II/III/III+;
. Nel WP3 alla revisione delle metodologie per quantificare le incertezze;
. Nel WP4 all'applicazione delle metodologie di incertezza per il calcolo di esperimenti condotti nell'impianto sperimentale, di tipo integrale, PHEBUS e coordinerà queste attività;
. Nel WP5 all'applicazione di metodologie di incertezza per il calcolo di scenari incidentali in generico PWR-900;
. Nel WP6 alla simulazione di scenari incidentali in SFP e eventuali analisi di sensibilità o incertezza.