Has anyone used the PHAST element? ?

I haven’t used it, but there are introductions to this software on Baidu: The following content is from the Internet: –– What is PHAST? --PHAST is a specialized software for calculating the consequences of accidents; it can determine various possible outcomes related to flammability, explosiveness, and toxicity. ――PHAST Overview At present, PHAST is widely used in the following fields: 1. Simulating the severity of accident consequences ； 2. Site selection for the factory, factory design, and layout ； 3. To provide a reference for taking targeted safety measures ； 4. Develop emergency rescue plans ； 5. Ensure compliance with laws and regulations ； 6. Raise safety awareness ； 7. Begin quantitative risk analysis (QRA). The calculations performed by PHAST mainly include a leakage module, a dispersion module, and a consequence impact module (including flammability and toxicity). The functions of each module will be described in detail below: Leakage Module The leakage module is used to calculate the flow rate and conditions of materials that leak into the atmospheric environment. PHAST’s leakage calculations take into account various possible scenarios, including: 1. Liquid-phase, gas-phase, or two-phase (liquid and gas) leakage ； 2. Leakage of pure substances or mixtures ； 3. Stable leakage or leakage that varies over time ； 4. Indoor leakage ； 5. Leakage in long-distance pipelines. Diffusion module: The diffusion module determines the spread and dispersion of cloud masses by calculating the results obtained from the leakage module along with weather conditions. In the diffusion module, we also considered various possible scenarios, including: 1. The formation of droplets within the cloud mass ； 2. The liquid droplets in the cloud masses fall to the surface (of the ground) ； 3. A liquid pool forms on the surface after falling ； 4. The liquid pool may evaporate again after it is formed ； 5. Mixing with air, propagation of cloud masses ； 6. Descent of the cloud mass ； 7. Rising of cloud clusters ； 8. The diffusion model of Miyun ； 9. Diffusion model of floating clouds ； 10. Passive (Gaussian) diffusion model ； In PHAST, the combustibility module can calculate the following possible combustion consequences: 1. Boiling liquid expansion vapor cloud explosion (BLEVE) and fireballs ； 2. Jet fire ； 3. Pond fire ； 4. Flash fire ； 5. Steam cloud explosion. The results obtained from the combustion module can be expressed in the following ways: 1. Radiation level ； 2. Flash fire area ； 3. Overpressure level ； When calculating the effects of a delayed explosion (an explosion that occurs after the cloud has spread over a certain distance), the mass of the combustible material is calculated using the data provided by the cloud propagation module. Toxicity module: The calculations carried out by the toxicity module yield the following results: 1. The curve showing how concentration changes with distance downwind ； 2. Curve of concentration at a certain location over time ； 3. Top view of cloud clusters and dose ranges ； 4. Changes in indoor concentration ； 5. Toxicity probability value or cloud toxicity load value ； 6. Toxicity mortality rate.

This post was last edited by safe1860 on 2010-10-13 at 10:20; dnv seems to offer relevant training

This post was last edited by safe1860 on 2010-10-13 at 10:19. Phast is the English version; there is no Chinese version, so it remains quite difficult to use

It says above that it can be downloaded, but it won’t install – and a fee is required! !

Here’s a detailed introduction; it depends on your English level – I’m not sure if you’ll be able to understand it. http://www.51qra.com/phastEnglishInstructionManual.rar