Workshop: An engineering perspective on risk assessment: from theory to practice

Contribution List

28. A Scale of Risk: A Multidimensional Evaluation and Comparison of Risks

Prof. Paolo Gardoni (Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign, USA)

26/11/2018, 09:20

SESSION I

This presentation offers a conceptual framework for ranking the relative gravity of diverse risks. The framework identifies the different aspects including moral considerations that should inform the evaluation and comparison of diverse risks and in turn shape the decisions for risk mitigation. A common definition of risk includes two dimensions: the probability of occurrence and the...

29. From Risk Analysis to Decision Support

Prof. Michael Havbro Faber (Aalborg University, Denmark)

26/11/2018, 09:40

SESSION I

The role and character of risk analysis and risk assessments have undergone significant changes over the last 3-4 decades. From being mainly a procedural instrument to document that nominal risks associated with a given decision are under control and compliant with specified targets, risk analysis and risk assessments are increasingly utilized for optimizing or ranking decisions based on...

30. Fire Probabilistic Risk Assessment in the US Nuclear Power Industry

Dr Jason Floyd (Jensen-Hughes)

26/11/2018, 10:00

SESSION I

Fire protection in US nuclear power plants was long regulated under a set of federal regulations called 10 CFR 50.48 Appendix R that prescribed fire protection measures. In 2001, the National Fire Protection Association issued NFPA 805, a performance based standard for fire protection at nuclear power plants. This standard, endorsed by the US Nuclear Regulatory Commission (NRC), allowed plants...

31. Q&A

26/11/2018, 10:20

SESSION I

8. Experiments and Modeling in Support of Nuclear Power Plant Probabilistic Risk Assessment in the USA

Dr Kevin McGrattan (NIST)

26/11/2018, 11:10

SESSION II

For the past two decades, the Fire Research Division at the National Institute of Standards and Technology (NIST) has performed fire experiments and numerical modeling to support the transition by the US Nuclear Regulatory Commission to a performance-based, risk informed approach to fire safety. The presentation will briefly describe the various projects, including fire model verification and...

4. Treatment of uncertainty in fire safety risk analysis

Dr Håkan Frantzich (Lund University)

26/11/2018, 11:30

SESSION II

Fire safety engineering is still a rather young engineering discipline which is under a rapid development. Historically, fire safety issues have been treated by prescriptive means based on lessons learned from incidents that had occurred. The practical problem occurs when there is no reference to be used. The traditional solution has been to rely on expert judgement, often with limited...

10. Practical approaches to QRA in fire protection engineering.

Dr Piotr Tofilo

26/11/2018, 11:50

SESSION II

The goal of this presentation is to discuss QRA methods in the area of fire engineering from own engineering experience and from a wider fire community and literature. QRA usually involves issues such as input data and scenarios, models, uncertainty, sampling techniques and assessment criteria. All these elements are often difficult to address in practical QRA due to lack of data, knowledge...

5. Q&A

26/11/2018, 12:10

SESSION II

2. Quantitative risk assessment in process safety studies: an overview

Dr Gabriele Landucci (Department of Civil and Industrial Engineering, University of Pisa)

26/11/2018, 14:00

SESSION III

In framework of process industries (e.g., chemical and petrochemical facilities), major accidents are accidental events connected with the use of hazardous materials in an industrial site. Major fires, explosions, toxic dispersions/contaminations constitute examples of possible events leading to serious danger to human health and/or the environment. These events feature high magnitude or...

3. ESS fire- and explosion safety programme - deterministic and probabilistic conditions – case study on acceptance criteria to open smoke hatches in the instrument building.

Fredrik Jörud (European Spallation Source)

26/11/2018, 14:20

SESSION III

A number of Swedish acts and ordinances give the basic requirements of facility safety. None of
these are tailored for ESS, hence interpretation is required for appropriate application.
The Licensee shall as far as reasonable possible, based on existing technical experience and economical and social circumstances, undertake measures to limit 1) production of radioactive waste, 2) release of...

27. Uncertainty in the assessment of BLEVE risk in process plants and in transportation

Prof. Joaquim Casal Fabrega (UPC Universitat Politècnica de Catalunya)

26/11/2018, 14:40

SESSION III

BLEVE explosions keep occurring from time to time in process plants, storage and transport by road or rail. Concerning the materials, the highest contribution is that from LPG and water, but many other liquids can also be involved; depending on their properties, the explosion can be followed by a fireball or a toxic cloud.
Although diverse models and methodologies have been proposed to...

26. Q&A

26/11/2018, 15:00

SESSION III

11. Monetary optimization and quantitative risk acceptance criteria: From theory to practice

Dr Katharina Fischer (Matrisk GmbH)

26/11/2018, 15:50

SESSION IV

Fire safety codes around the world are based on two different approaches to regulate building fire safety: Prescriptive or performance-based design. The prescriptive approach, as implemented in most traditional fire safety codes, allows for a simple and effective risk control for the majority of buildings, but offers little flexibility to the designers and is difficult to apply in specific...

12. Quantitative fire risk assessment to optimise investments into fire safety

Dr Gianluca De Sanctis (EPB)

26/11/2018, 16:10

SESSION IV

Decisions concerning investments into fire safety are usually made based on the reduction of risks, whereas the costs of fire safety measures are often neglected. However, for a thorough assessment, both aspects need to be considered and a balanced ratio between costs and risk reduction should be aspired. Such an assessment leads to optimised fire safety measures.
We show how quantitative risk...

16. Probabilistic seismic risk analysis in the insurance industry: the University of Naples Federico II – AXA-MATRIX approach

Prof. Iunio Iervolino (University of Naples Federico II)

26/11/2018, 16:30

SESSION IV

cState-of-the-art seismic risk assessment develops in a fully probabilistic framework due to the large uncertainties inherent to the earthquake characteristics and to the seismic response of civil structure/infrastructure. The consolidated approach is that of performance based-earthquake engineering (PBEE) in which the target is to compute the expected annual loss due to seismic damage (e.g.,...

6. Q&A

26/11/2018, 16:50

SESSION IV

20. Aerosol Modeling with Fire Dynamics Simulator

Dr Jason Floyd (Jensen Hughes)

Traditionally fire models have treated smoke as just another gas phase species and for much of its history this has been the case with the Fire Dynamics Simulator (FDS). In efforts to address issues with validation of smoke obscuration predictions, support forensics applications, and other usage, recent FDS development has added number of features related to the modeling of aerosols. These...

17. FIRIA Introduction

Saverio La Mendola (CERN)

19. FIRIA WP-A

Oriol Rios (CERN)

23. FIRIA WP-I

Art Arnalich (CERN)

18. FIRIA WP-M

Giordana Gai (CERN)

22. FIRIA WP-R

Pavol Vojtyla (CERN)

21. FIRIA WP-T

Fabio Corsanego (CERN)

24. Round table

7. Wrap-up of the day / Round table