Vapour cloud modelling in the risk assessment of major toxic hazards

Effect of relative humidity

Rhea Kakko

Research output: Book/ReportReportProfessional

Abstract

During the last ten years there has been a considerable increase in the use of quantified risk assessment to achieve a detailed understanding of complex plants, and for assisting decision making on safety matters stemming from the hazards associated with process. In risk assessments, a variety of predictive models is employed. The final results therefore contain uncertainties which arise from modelling imperfections or the adoptions of assumptions and judgements that are necessary to perform risk analysis. The paper illustrates the procedure required for a quantitative top-down analysis of risks from major toxic hazards to the individuals. The paper also indicates that many items of data or assumptions need to be incorporated. Particular attention is paid to the importance of relative humidity effects on consequence analysis. A computerised procedure developed within the Technical Research Centre of Finland is presented. The sensitivity of the results to assumptions and judgements, and the validity and usefulness of the approach are discussed.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages126
ISBN (Print)951-38-3704-1
Publication statusPublished - 1990
MoE publication typeD4 Published development or research report or study

Publication series

NameTutkimuksia / Valtion teknillinen tutkimuskeskus
PublisherValtion teknillinen tutkimuskeskus
Volume683
ISSN (Print)0358-5077

Fingerprint

relative humidity
risk assessment
hazard
modeling
decision making
safety
analysis
effect
research centre
risk analysis

Keywords

  • risk assessment
  • hazards
  • gases
  • vapours
  • dispersion
  • calculations
  • humidity
  • ammonia

Cite this

Kakko, R. (1990). Vapour cloud modelling in the risk assessment of major toxic hazards: Effect of relative humidity. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 683
Kakko, Rhea. / Vapour cloud modelling in the risk assessment of major toxic hazards : Effect of relative humidity. Espoo : VTT Technical Research Centre of Finland, 1990. 126 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 683).
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Kakko, R 1990, Vapour cloud modelling in the risk assessment of major toxic hazards: Effect of relative humidity. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 683, VTT Technical Research Centre of Finland, Espoo.

Vapour cloud modelling in the risk assessment of major toxic hazards : Effect of relative humidity. / Kakko, Rhea.

Espoo : VTT Technical Research Centre of Finland, 1990. 126 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 683).

Research output: Book/ReportReportProfessional

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Kakko R. Vapour cloud modelling in the risk assessment of major toxic hazards: Effect of relative humidity. Espoo: VTT Technical Research Centre of Finland, 1990. 126 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 683).