Download Citation on ResearchGate | Dow’s Fire & Explosion Index Hazard Classification Guide | The Fire and Explosion Index (F&EI) is one of the most widely. F & EI Hazard classification guide. 5. F & EI form. DOW Fire & Explosion Index. IDENTIFY PERTINENT PROCESS UNIT. (An item of equipment that could impact . Dow’s Fire and Explosion Index Hazard Classification Guide [American Institute of Chemical Engineers (AIChE)] on *FREE* shipping on qualifying .

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It is apparent that by undertaking a series of corrective measures in the process unit, the amount of damages will be far less 9. They include, lack of a fire sprinkler system, lack of water and foam curtains, lack of coating fire protection on the cable trays in the fire protection district, and a poor drainage system. Selection of Pertinent Process Units. Meanwhile, the degree of flammability and reactivity of Hexane, which is the main hazardous material in this unit, were determined to calculate material factor MF.

The extraction unit was, therefore, categorized as a severe risk and consequently, requiring correction measures. Material Factor Temperature Adjustment.

Dow’s Fire and Explosion Index Hazard Classification Guide, 7th Edition

Maximum Probable Days Outage. Finally, it is a useful tool for inherent safety evaluation and safer design 4.

Consequently, the current study was performed to determine the expected losses more accurately and to encourage management to invest in control systems and to improve current fire and explosion control measures based on their priorities.

Procedure for Risk Analysis Calculations.

Dow’s fire and explosion index: a case-study in the process unit of an oil extraction factory

By using a material factor MF and process unit hazards factor F 3 and referring to the manual diagrams, DF was determined.

Received Jun 17; Accepted Sep Hexane was the main hazardous material that was assigned, with the material factor MF 16 based on its properties. Table 2 Comparison of results before and after the supposed reforms. It is noted classicication a more realistic and accurate assessment of fire and explosion damage depends on the effectiveness of existing controls and safeguards.


The Dow Index of the processing unit was estimated to be Other parameters such as loss control credit factor, process control factor, separation of materials factor and fire protection factor were calculated, which are shown in Table 1.

Dow\\’s Fire & Explosion Index Hazard Classification Guide, 7th Ed._图文_百度文库

This is a case study conducted in one of the process units of an oil extraction factory. In summary, the findings showed the Dow Fire and Explosion Index is a suitable technique for measuring inconsistencies and it is also a criterion for measurement of the total hazards of a plant or of a part of the provided services. This method was introduced by the Dow Chemical Company for fire and explosion hazard analysis.

Third, it is a user-friendly tool for evaluation of fire and explosion hazards in chemical process industries that uses available parameters such as temperature, pressure, and energy of chemical substances. Comparison of methods of hazard identification at plant level. classidication

Dow’s fire and explosion index: a case-study in the process unit of an oil extraction factory

The comparison shows that by applying reforms the FEI can change to Author information Article notes Copyright and License information Disclaimer. For example, a process unit equipped with a computer system with the ability to shut down the system if it receives critical data and to handle the system without the assistance of an operator, is a good risk reduction measure.

Discussion The Fire and Explosion Index at the extraction unit was calculated as Given the conditions in the process unit, the normal level was used to calculate lost workdays, yielding On the other hand, in this case explsoion, the loss control credit hazqrd due to the current inedx is 0. Finally, assuming that the recommendations have been implemented, risk analysis was performed again.


A series of corrections was then proposed and risk analysis was performed again to examine the effects of reforms. The results showed that the process unit has the highest potential for fire and explosion risks.

Basic Preventive and Protective Features. Manufacturing Unit Risk Analysis Summary. Therefore, the classical method, which is a qualitative risk assessment method based on expert judgment, was applied. The credit factor is a number between 0 classiication 1.

Number 1 is allocated when there is not any control measure. Calculation of Fire and Explosion Index For this purpose, base and specific hazards of the process were monitored, then each hazard was assigned a new invoice. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs Licensewhich permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

Fire and Explosion Index Form. Process Unit Risk Analysis Summary. Data were obtained mainly through interviews and consultation with experts, as well as reported operating parameters and process documents. The current drainage system is not capable clsasification evacuating all liquids spilled during fire distinguishing.

Since a fire or explosion has not yet occurred in this jndex, this information does not exist. Loss prevention in the process indusrries. Loss Control Credit Factors Form.

The results show that control process measures in this unit are more effective at reducing risk, than fire protection and material separation.

In this study, the Dow Index is used for the following reasons: Merely by properly improving the drainage system, this factor will reduce from 0. Classificatiion Center for Biotechnology InformationU. Determination of Fire and Explosion Index.