Risk assessment of zero-flow ventilation strategy for fires in bidirectional tunnels with longitudinal ventilation

I. Nakahori; T. Sakaguchi; B. Kohl; C. Forster; A. Vardy

Risk assessment of zero-flow ventilation strategy for fires in bidirectional tunnels with longitudinal ventilation

I. Nakahori
, T. Sakaguchi
, B. Kohl
, C. Forster
, A. Vardy

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Two generically different methods are used to assess alternative strategies for responding to the outbreak of fire in a road tunnel. One approach, common in Japan, follows a deterministic process that leads to strong qualitative outcomes, namely either "safe" or "fatal", for any chosen specific scenario. The other approach, developed in Austria, is a probabilistic, system-based process that leads to quantitative outcomes for any specific tunnel and that provides a method of comparing overall safety in different tunnels. The two approaches are used to provide independent assessments of the merits of (i) an actively controlled zero-airflow response to the detection of fire and (ii) a simpler response in which all fans are immediately shut down and the airflows are determined by conditions at the tunnel. Both assessment methods show that the acfive response constitutes a significantly lower risk strategy than the simpler response.

Original language	English
Title of host publication	BHR Group - 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015
Publisher	BHR Group Limited
Pages	501-516
Number of pages	16
ISBN (Print)	9781510813748
Publication status	Published - 2015
Event	16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015, ISAVFT 2015 - Seattle, United States Duration: 15 Sept 2015 → 17 Sept 2015

Conference

Conference	16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015, ISAVFT 2015
Country/Territory	United States
City	Seattle
Period	15/09/15 → 17/09/15

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality
Civil and Structural Engineering
Building and Construction

Cite this

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title = "Risk assessment of zero-flow ventilation strategy for fires in bidirectional tunnels with longitudinal ventilation",

abstract = "Two generically different methods are used to assess alternative strategies for responding to the outbreak of fire in a road tunnel. One approach, common in Japan, follows a deterministic process that leads to strong qualitative outcomes, namely either {"}safe{"} or {"}fatal{"}, for any chosen specific scenario. The other approach, developed in Austria, is a probabilistic, system-based process that leads to quantitative outcomes for any specific tunnel and that provides a method of comparing overall safety in different tunnels. The two approaches are used to provide independent assessments of the merits of (i) an actively controlled zero-airflow response to the detection of fire and (ii) a simpler response in which all fans are immediately shut down and the airflows are determined by conditions at the tunnel. Both assessment methods show that the acfive response constitutes a significantly lower risk strategy than the simpler response.",

author = "I. Nakahori and T. Sakaguchi and B. Kohl and C. Forster and A. Vardy",

year = "2015",

language = "English",

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pages = "501--516",

booktitle = "BHR Group - 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015",

publisher = "BHR Group Limited",

address = "United Kingdom",

note = "16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015, ISAVFT 2015 ; Conference date: 15-09-2015 Through 17-09-2015",

}

Nakahori, I, Sakaguchi, T, Kohl, B, Forster, C & Vardy, A 2015, Risk assessment of zero-flow ventilation strategy for fires in bidirectional tunnels with longitudinal ventilation. in BHR Group - 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015. BHR Group Limited, pp. 501-516, 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015, ISAVFT 2015, Seattle, United States, 15/09/15.

Risk assessment of zero-flow ventilation strategy for fires in bidirectional tunnels with longitudinal ventilation. / Nakahori, I.; Sakaguchi, T.; Kohl, B. et al.
BHR Group - 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015. BHR Group Limited, 2015. p. 501-516.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Risk assessment of zero-flow ventilation strategy for fires in bidirectional tunnels with longitudinal ventilation

AU - Nakahori, I.

AU - Sakaguchi, T.

AU - Kohl, B.

AU - Forster, C.

AU - Vardy, A.

PY - 2015

Y1 - 2015

N2 - Two generically different methods are used to assess alternative strategies for responding to the outbreak of fire in a road tunnel. One approach, common in Japan, follows a deterministic process that leads to strong qualitative outcomes, namely either "safe" or "fatal", for any chosen specific scenario. The other approach, developed in Austria, is a probabilistic, system-based process that leads to quantitative outcomes for any specific tunnel and that provides a method of comparing overall safety in different tunnels. The two approaches are used to provide independent assessments of the merits of (i) an actively controlled zero-airflow response to the detection of fire and (ii) a simpler response in which all fans are immediately shut down and the airflows are determined by conditions at the tunnel. Both assessment methods show that the acfive response constitutes a significantly lower risk strategy than the simpler response.

AB - Two generically different methods are used to assess alternative strategies for responding to the outbreak of fire in a road tunnel. One approach, common in Japan, follows a deterministic process that leads to strong qualitative outcomes, namely either "safe" or "fatal", for any chosen specific scenario. The other approach, developed in Austria, is a probabilistic, system-based process that leads to quantitative outcomes for any specific tunnel and that provides a method of comparing overall safety in different tunnels. The two approaches are used to provide independent assessments of the merits of (i) an actively controlled zero-airflow response to the detection of fire and (ii) a simpler response in which all fans are immediately shut down and the airflows are determined by conditions at the tunnel. Both assessment methods show that the acfive response constitutes a significantly lower risk strategy than the simpler response.

UR - https://www.scopus.com/pages/publications/84969981515

UR - http://toc.proceedings.com/28105webtoc.pdf

M3 - Conference contribution

AN - SCOPUS:84969981515

SN - 9781510813748

SP - 501

EP - 516

BT - BHR Group - 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015

PB - BHR Group Limited

T2 - 16th International Symposium on Aerodynamics, Ventilation and Fire in Tunnels 2015, ISAVFT 2015

Y2 - 15 September 2015 through 17 September 2015

ER -

Risk assessment of zero-flow ventilation strategy for fires in bidirectional tunnels with longitudinal ventilation

Abstract

Conference

ASJC Scopus subject areas

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