Filetype
The many and costly wildland fires in later years have created a demand for better knowledge about the spreading of the wildland fire on to structures and how you should protect your home against these fires. This report is a part of a large study, “Analysis of the fire risk to structures in the southern California urban-wildland interface”, on these matters performed by the University of Californ
An evaluation of methods for caluculation of species as CO and CO, layer burning and flashover in a singel room fire, using CFAST, correlation models, Beylers equation and A1 Flashover. The models are compared with performed experiments. Swedish
Handling of sulfurdioxide (transport, unloading, storage and distribution) at a pulpmill. Riskanalysis of discharge of sulfurdioxide according to the CPQRA-method, containing both consequence and frequence calculations. Handcalculations for rate of mass release, evaporation and dipersion combined to express a formula for risk distance, simulated in the statistical computerprogram @RISK. Dischargef
The study is an evaluation of the fire safety level of category B High Speed Craft built according to the High Speed Craft-Code. To verify the conclusions and results, four category B HSC have been selected and analysed. The fire safety evaluations of the craft are presented in separate reports. This report summarises the results from the evaluations with respect to the fire safety measures and th
Studies of consequences due to two different fire scenarios in the plant area. Calculations on heat flux towards LPG storage vessel, distribution line, steel vessel and finally a storage tank containing peracetic acid. Design of calculation models. Time aspects to explosion, burst of vessel and failure. Loss of goodwill due to pollution and environmental damage. (Swedish)
This report summarizes the classification systems for surface lining materials in Europe and Japan. There is also a part including a discussion on differences, similarities and possible ways to link the two different systems together. In June 1994, an important agreement was made between the member countries in the European Community. The agreement stated that all member countries should have the
GIS (geographical informationsystems) is computer-based informationsystems with functions for input, processing, storage, analysis and presentation of geographical data. This means that data after processing and ystematisation gives information that may be presented as maps, tables and statistics, which can provide basic data for analysis and decisions. This report describes a theoretical backgrou
This report is a fire safety evaluation of the office enviroments at a nuclear power plant in Oskarshamn, Sweden. Calculations and computer simulations concerning smokefilling and evacuation are presented together with the results of a full scale evacuation drill. Results, judgements and suggestions to improve the fire safety are given. (Swedish)
This report describes two models for calculations and simulations of spread of fire gases via ventilation systems. The models are applied on the electrical building of reactor 3 at the nuclear power plant of Ringhals, Sweden. A summary of the present Swedish regulations regarding fire dampers and duct insulation is presented. Suggestions to reduce smoke spread via ventilation systems are given. (S
The new building code was implemented in Sweden in 1994. This building code made it more possible to use solutions, not only standard but also alternative solutions, based upon analytical calculations to show whether the fire safety level in a building is enough or not. With computer programs and equations it is possible to dimension the type and proportions of the selected fire safety equipment.
Fundamental laws of nature used in field modelling using Computational Fluid Dynamics are discussed and explained. Extensions and models used to complement these basic laws of physics in fire specific scenarios are also discussed. The field model SOFIE, Simulation Of Fires In Enclosures, has been used and predictions of gas-temperature, gas-velocity and presence of combustion gases are compared to
This report investigate evacuation safety in business premises. A number of rooms have been designed by old Swedish building regulations, Nybyggnadsreglerna, NR, 1988 as handbook. When NR doesn’t corresponds with the building regulations of today, Boverkets byggregler, BBR 94, the rules in BBR will be followed. The rooms have been chosen in a way so it will be possible to study the effects on the
A flame-spread model is incorporated into a zone model, the WPI/Fire Code. The external heat flux’s influence on the model is discussed and a tolerable value is calculated. The input parameters to the flame-spread algorithm are exposed to a simple sensitivity analysis. The algorithm is compared with two scenarios, Model A and Model B. Model A compares experimental data from a free burning test whi
A risk analysis of the coatings manufacturer Akzo Nobel in Sege, Malmö, was carried out in 1996. This consequence analysis has been made from the resulting seven worst case scenarios in the risk analysis. The scenarios have been analyzed regarding temperature, smoke layer height, RHR, and oxygen concentration. Comparison has been made with the industrial fire department’s and Malmö fire department
The aim of this report has been to perform a risk analysis of Iggesund Paperboards paperboard factory in Iggesund and from the result draw conclusions on how to develop the methodology of economical risk analysis. The risk analysis consequences are expressed in economical terms and the measurement of the risk is presented as the expected annual cost due to fire. The model which is used is based on
The concept of weapon-induced fires on board ships (mainly warships) is introduced in a comprehensive manner. The analysis is based on experiences from military and civilian shipping, statistics, experimental work and literature on the subject. Events following a weapon-induced fire are outlined in a qualitative manner and key hazards and measures of protection and their effects are recognised and
This report describes window glass breakage due to heating. Mathematical models are explained. The computer program BREAK1 is described and evaluated by comparing it to experimental results. The history and production of window glass are presented. A litterature survey is also presented.
The report brings up the matter of risk analysis in urban planning. A risk analysis of the harbour area in Malmö has been carried out. The purpose is to provide basic data for decision-making concerning construction of residential areas in the harbour area.
By using qualitative risk analysis in order to identify large accidents a probabilistic quantitative risk analysis regarding the handling of sulphur dioxide and chlorodioxide have been carried out at Stora Gruvön pulp and paper plant, Grums. The results, individual risk and societal risk, have been compared to risk criterias.
