Fire Damage Assessment

Fire Damage Assessment
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Fire Damage Assessment and Fire Risk Assessment Techniques used to assess the extent of damage due to fire. Materials of construction used in petrochemical plants are selected based on the extensive research and experience, vis-à-vis specific guidelines from different international standards. These standards and specifications deal with different manufacturing procedures, chemical composition and mechanical properties.
In view of the associated complications in interpretation of the microstructures, most of the standards remain silent on their acceptance norms and hence microstructure checking does not remain mandatory as a part of acceptance / rejection criteria during procurement. This is the main reason why most of the equipment do not have any base line data for microstructures before they are put in to the service.
It is an established fact that for metals and alloys their chemical composition along with heat treatment conditions has a strong correlation with microstructure. Accidental fires do leave evidences in the form of changes in the microstructures of the concerned plant and machinery. Based on this fact, it is possible to take a fairly accurate judgment on fire-affected and un-affected structures using the hardness data and the results of microstructure examination. This in turn is useful in taking the decision as regards the replacement / repair of the component / equipment to put back the plant into operation.Fire Assessment
The purpose of

Fire Damage Assessment

under accidental fire exposure is to thus estimate :
  • Extent of temperature exposure, to estimate the maximum temperature reached
  • Assessment of changes in the microstructure as a result of fire
  • To judge the changes in the mechanical properties with respect to change in microstructure
  • To assess the extent of damage due to fire and to ensure the worthiness of the component / plant for further use