Risk-based Analysis of Pressurized Vessel on LNG Carriers in Harbor

Özet

The need to understand understand the associated associated risks of pressurized pressurized vessels vessels and their consequences consequences onboard onboard ship is imperative. imperative. The handling handling and storage storage of Liquefied Liquefied Natural Natural Gas (LNG) mostly result in catastrophic catastrophic accident accident with associated associated consequences. consequences. To quantify quantify these consequences consequences in terms of death and degree of burn depends depends on the tank structures structures and pressure pressure control control mechanism mechanism onboard onboard LNG carriers carriers in a harbor. harbor. In this research, research, the result of the potential potential risks and damage consequences consequences of the LNG fire accident accident in terms of the degree of burns and fatality fatality is presented. presented. The probability probability of death, first and second degree of burn injuries injuries are assessed assessed using consequence consequence modelling modelling technique, technique, while the pool fire was modelled modelled using the Boiling Boiling Liquid Expanding Expanding Vapour Explosion Explosion (BLEVE) (BLEVE) approach. approach. The result shows that at 30 meters from the flame radius, radius, the probabilities probabilities for first-degree first-degree burn, second-degree second-degree burn, and death decrease, decrease, respectively. respectively. A sensitivity sensitivity analysis analysis revealed revealed that at the initial initial heat flux and closer distance distance of 5m to 10m from the flame radius at the point of the accident, accident, the death rate, first degree, degree, and second-degree second-degree burns increase increase significantly. significantly. Therefore, Therefore, installing installing a safety system and best practices practices that will mitigate mitigate these risks to as low as reasonably reasonably possible possible should be incorporated incorporated into the system design.