Analysis and risk assessment of regional infrastructure with passive defense approach (Case Study: one South Pars Industrial Zone)

The purpose of passive defense plans is to reduce the vulnerability of critical facilities and equipment, and the country in critical condition due to man-made threats. Critical infrastructure as the main of industrial zones is considered as the main part of the foundations that its damage can be affected the most area.By considering that a significant proportion of the country's gas is supplied by the South Pars zone.the criteria infrastructure of this zone is considered as attractive hub to enemy invasion. This applied research was used the library studies and distributed questionnaire to collect information and Analytical-evaluative method propsed by Federal Emergency Management Agency of America (FEMA) for analyzing the collected data.the results show that in terms of assets, oil and gas installations with 8.86; communications infrastructure with 8.64; power installation with 6.71; and water and wastewater facilities with 6.45 have the most value, respectively. Twelve threats were also assessed that air and missile strikes with 9.21; bacterial-chemicaland nuclear with 9.17; biological threats with 8.72 are most likely to occur, respectively. The Most vulnerability and risk is estimated for communication infrastructure against electromagnetic bombs at 9.114 and 688.47, electrical installations against electromagnetic bombs and graffiti at 8.446 and 407.47, oil and gas facilities against the bomb threat at 8.484 and 655.46; water and wastewater facilities against cyber threats of terrorism and bio at 8.3 and 466.82; respectively. In the end, the vulnerability and risk reduction strategies are expressed.