Risk Study Resolution No. 306/2014
The Risk Analysis Study proposed by Biogroup consists of evaluating the various risks associated with the activity of an Industrial Plant. The purpose of these studies is to determine, with a reasonable approximation, the accidents that may occur and the magnitude of their consequences, according to the guidelines that arise from Resolution No. 306/14 of the Department of the Environment of the Province of Santa Faith.
A risk analysis aimed at accident prevention generally involves the following stages:
Identification of unwanted events, which can lead to the materialization of a danger.
Analysis of the mechanisms by which these events take place.
Estimation of the unwanted effects with which they can be produced.
Biogroup uses the systematic method that best describes the activity or process, such as HAZOP ("Hazard and Operability Study"), What IF? o FMEA (Analysis of Failure Modes and Effects) according to the results of the previous evaluations carried out on the Plant and the processes; to identify and evaluate hazards and anomalous situations that could prevent efficient operation and cause damage to the environment, facilities and people.
The study is carried out by a multidisciplinary team, with updated process information and data, systematically analyzing the entire industrial plant, identifying the most risky sectors, dividing it into a set of sectors or nodes.
Each node (plant sector) is analyzed by systematically and exhaustively applying a series of pre-established guide words, characteristics of the selected method, to all the parameters/variables of importance for the operation and safety of the complex/process. The results for each deviation are dumped in tables where it is possible to clearly evaluate the guide words, parameter, deviation, cause and the results such as: consequences, protections or safeguards and suggestions.
Based on this study, the required actions are determined and a Risk Management Plan is prepared, with specific measures for its management.
The Study also includes a quantitative risk analysis. To this end, all representative events or causes of hazards detected in the hazard identification analysis are considered. For each one of them, the frequency of occurrence is calculated, and the severity of the consequences, expressed as the probability of death of people who are exposed both inside and outside the Plant. With these data, the individual irrigation to which the population and workers will be subjected in the affected area is then calculated.
For each hazard to be evaluated, all scenarios are taken into account, such as toxicity, radiation, overpressure, and all that corresponds. Software packages endorsed by official international institutions are used.
To evaluate the diffusion of contaminants, leaks through holes, radiation, overpressure, the relevant parameters are discretized.
For leaks and hole sizes, three scenarios are adopted: small, medium and large, in addition to the worst case, the catastrophic.
The risk at each geographical point will arise from the sum of the risks at that point due to each of the scenarios described.
The study is presented in a report detailing the hypotheses assumed, the discretizations performed, the estimated frequencies for each event/scenario, and their justifications.
The results are presented in the form of tables and graphs showing the affected area. The consequences of the relevant hazards are presented through curves of isoconcentrations, isoradiations, or isooverpressures. The most common incidents to be modeled in each of the scenarios proposed are detailed below: Consequence analysis: fires and explosions
Possible sources of ignition
explosions
Effects of fire and explosions
confined explosions
unconfined explosions
Dust Cloud Explosions
Estimation of the effects of an explosion as a function of distance
Unconfined Vapor Cloud Explosion (NCVC)
Flash Fires
Container breakage. Explosion energy. projectile formation
Fires of liquids in puddles (pool fire)
Fire darts (Jet fire)
BLEVES and spheres of fire (Fireballs)
Calculation of effects in BLEVE explosions
dust cloud explosions
Consequence Analysis: Release of Hazardous Substances
Accidental discharge of liquids
Accidental discharge of gases or vapors
biphasic discharge
Evaporation of spilled liquids
Modeling the dispersion of gases and vapors in the atmosphere
Analysis of the vulnerability of people and facilities
Effect of toxic emissions
Vulnerability to thermal effects
Effects of thermal radiation on people (operators and neighbors)
effects of it
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