Separation distances survey - Kadesh Barne
In this project, we were asked to carry out separation distance surveys for two nearby poultry farms, which raise poultry for food, and uses LPG (condensed hydrocarbon gas) for heating the rearing facilities during the winter months.
One of the farms needed a survey of the separation distances in order to renew the poisons permit, and for the other it was the first request for a poisons permit. In May 2020, the Ministry of Environmental Protection updated the procedures for separating stationary sources of risk from public receptors and residences, with the aim of reducing and preventing accidents involving hazardous substances, and aligning with EU policy (SEVESO 2), thus, any manufacturer that owns the factory or farm a substance defined as dangerous, toxic, flammable or explosive is required, upon renewal of the poisons permit (once every three years), to conduct a survey of separation distances and to improve the ability to protect against possible damage to public health and the environment. LPG, which is used, among other things, as a cooking gas, is a product of the petroleum refining process, it is odorless and colorless, explosive and flammable. Its ignition can, in an explosion, cause serious damage in a radius of hundreds of meters. For storage and transportation, the LPG is compressed under high pressure, which causes a rapid dispersion during an uncontrolled release as a result of a failure in the storage tank (wear of the tank, piping or filling nozzle, or as a result of random or intentional damage). The explosion power of 1 kg of LPG under certain conditions is equivalent in its power to the explosion of 1 kg of explosives. During the survey of the separation distances, we examined the wind regime on the site, the proximity of the LPG reservoirs to existing and future public receptors, and using a dedicated model, we examined the dispersion of LPG in the event of a malfunction, which could cause an explosion. Using the model, we examined the dispersion of the material in the event of a domino event ( chain reaction), of LPG accumulators, for the purpose of predicting the impact of an explosion of the order of dozens of tons of LPG at the same time, on public receptors located nearby. According to the survey we carried out, it was found that the farm meets the requirements of the Ministry of Environmental Protection's separation distance policy. In the existing risk ranges, no public receptors are found or planned that may be encountered in the risk scenarios examined. In addition, according to the "clean area" exception, the farm meets the Ministry's strict requirements. Also, the radius of risk tested according to the model does not exceed the boundaries of the farm area. We at Sutok Environmental Engineering accompany our clients with dedication and while meeting deadlines, and help in dealing with various environmental and regulatory challenges.