Validation and development of different calculations methods and software packages for fire safety assessment in swedish nuclear power plants
Author
Summary, in English
Fire models are used increasingly for fire safety assessment in nuclear power plants.
Examples of these fire models are CFD models and zone models. When using these
models it is important that they are sufficiently verified and validated. In Sweden the
majority of fire safety consultants are using FDS, developed by NIST. The verification
and validation of this package is intensively done for a number of scenarios by the developing
team. One of the recent modifications in FDS is the implementation of a ventilation
module. The first aim of this paper was to validate FDS and ANSYS-CFX within
the Swedish part of the OECD/NEA PRISME project using the PRISME SOURCE D1
test. The results are presented in this article and show how powerful the module is for
simulation in enclosures with mechanical ventilation. Beside CFD models, fire safety
engineers need also simple empirical models for determining temperatures, smoke
heights, etc. In the second part of this paper such a model is developed. The model
predicts gas temperatures in a room adjacent to a room involved in a pre-flashover fire.
The correlation is derived with help of computer simulations and validated by means of
a set of fire tests. The results of the correlation model are satisfactory and the correlation
formulae will be an additional tool for fire safety engineers.
Examples of these fire models are CFD models and zone models. When using these
models it is important that they are sufficiently verified and validated. In Sweden the
majority of fire safety consultants are using FDS, developed by NIST. The verification
and validation of this package is intensively done for a number of scenarios by the developing
team. One of the recent modifications in FDS is the implementation of a ventilation
module. The first aim of this paper was to validate FDS and ANSYS-CFX within
the Swedish part of the OECD/NEA PRISME project using the PRISME SOURCE D1
test. The results are presented in this article and show how powerful the module is for
simulation in enclosures with mechanical ventilation. Beside CFD models, fire safety
engineers need also simple empirical models for determining temperatures, smoke
heights, etc. In the second part of this paper such a model is developed. The model
predicts gas temperatures in a room adjacent to a room involved in a pre-flashover fire.
The correlation is derived with help of computer simulations and validated by means of
a set of fire tests. The results of the correlation model are satisfactory and the correlation
formulae will be an additional tool for fire safety engineers.
Department/s
Publishing year
2011
Language
English
Publication/Series
21st International Conference on Structural Mechanics in Reactor Technology (SMiRT 21) - 12th International Pre-Conference Seminar on “FIRE SAFETY IN NUCLEAR POWER PLANTS AND INSTALLATIONS“
Document type
Conference paper
Topic
- Building Technologies
- Other Civil Engineering
Conference name
21st International Conference on Structural Mechanics in Reactor Technology (SMiRT 21) - 12th International Pre-Conference Seminar on “FIRE SAFETY IN NUCLEAR POWER PLANTS AND INSTALLATIONS“
Conference date
2011-09-13 - 2011-09-14
Status
Published
Research group
- Fire dynamics
- Fire modeling