(65ax) Quantitative Risk Analysis of the Expansion of the Chlorine Room of the Industrial Water Plant of the Petrochemical Complex Jose Antonio Anzoategui of Petroquimica  Venezuela Pequiven S.a

Venezuela Petrochemical PEQUIVEN SA has a management responsible for risk control, which makes this quantitative risk analysis to estimate the risk to employees and third parties for process safety events that may occur as a result of the loss of containment in the facilities and thus indicate recommendations aimed at reducing the level of risk associated with such events. Quantitative risk analyzes are made from the standard rules of Petroleos de Venezuela , PDVSA as IR-S-02: criteria for quantitative risk analysis and other international standards such as Center of Chemical Process Safety Guidelines for Chemical Process Quantitative Risk Analysis and the netherlands organization Yellow book: Methods for calculation of physical effects, through the computational tool PHAST RISK 6.7 . Developed by DNV Company.

PEQUIVEN has three complexes nationwide, in which fertilizers for the food industry, olefins and plastics for residential construction, among other products are produced. The Jose Antonio Anzoategui complex will make an expansion of the chlorine room of the industrial water plant and because of the dangers associated with chlorination process, a quantitative risk analysis has requested to engineering management risks.

The process of a quantitative risk analysis (QRA) started setting goals, objectives and depth of the study, once these are established, and in conjunction with materials, inventory, environmental conditions and the description of the process, one proceeds to identify scenarios. In this case, the HAZOP tool was applied, which gives the place a list of possible scenarios, of which those that could cause the worst consequences. With the previously selected scenarios, the model building on which the estimated frequency and consequence will be held is started. The frequency is estimated based on a review of probability theory study according to Chemical Process Safety Fundamentals with Applications Standard, through a theoretical data extracted from the norm Guidelines for Process Equipment Reliability Data, a probability of occurrence of the scenarios is established.

The estimation of Consequence answer a series of complex mathematical models that simulate the behavior of these events based on the data of the others that occurred already trough PHAST RISK software. Once the simulation is made, the software generates a series of results of contours risks in function of exposure to chlorine gas to the personnel working in this complex and surrounding facilities, allowing emit a series of observations than are aimed to decrease level of Risk associated with the expansion of the chlorine room.