Published Paper Details:

Any leakage from process equipment (process vessels, storage tanks, pumps pipelines etc) may lead to formation of flammable gas cloud in surrounding area. If any ignition sources is present in the area where flammable gas cloud can reach will result into flash fire or vapor cloud explosion and fatalities. Hazardous area classification study aims to eliminate electrical ignition sources from the area where there is a possibility of flammable atmosphere is present during normal or abnormal operations or during accidental leakages. Several standards (6,7,8) has described methods to be used for hazardous area classification. However, these methods are generic in nature and may not be suitable considering extreme operating conditions and numerous flammable chemicals present in chemical manufacturing plants. This research paper aims to compare and validate the extent of hazardous area defined in Indian Standard IS 5572: 2009 (reaffirmed in 2018), Classification of hazardous areas (Other Than Mines) having flammable gases and vapours for electrical installation (Third Revision)by use of dispersion modelling using DNV PHAST 8.71.