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SOFT风险软件

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dnv_phast_risk6.6风险软件免费下载

时间:2012-06-28 09:03 来源:互联网 授权方式:免费下载 下载次数:责任编辑: 51QRA.COM

DNV Software continuously monitors evolving market needs to ensure that our software products are able to provide the functionality customers need and expect. In recent years, accidents along with new industry standards have driven demand for improved modelling and reporting of the effects of flammable releases. Of particular interest are the effects on people and the likelihood that certain effect levels will be exceeded.

Phast 6.6 will provide more transparency within the risk results and significant improvements in the accuracy with which explosion risks can be assessed in areas of congestion and around occupied buildings. It will also allow more detailed definition of model geometry, specifically in terms of defining degrees and areas of
congestion and location and strength of individual buildings, and the risks within and around those buildings.

The Phast 6.6 release will comprise two main deliverables, which will together provide an ‘integrated’ tool with the extended modelling and reporting of explosion risks available as a chargeable extension:

  • An update to Phast based on the existing architecture including the improved mapping of buildings and equipment and extended implementations of the Multi-Energy and Baker-Strehlow-Tang explosion models
  • An additional graphing and reporting module based on the next-generation architecture, the so-called Risk Framework, providing significantly enhanced capabilities for analysing and reporting the consequence of and risk from explosions.
  • 泄漏模块
    泄漏模块是用来计算物料泄露到大气环境中的流速和状态。PHAST 的泄漏计算考
    虑了多种可能的情况,包括有:
    1.液相、气相或者汽液两相泄漏;2.纯物质或者混合物的泄漏;3.稳定的泄漏或随时间变化的泄漏;4.室内泄漏;5.长输管道泄漏。
    扩散模块
    扩散模块是通过对泄漏模块得到的结果以及天气情况进行计算来得到云团的传播扩
    散情况。在扩散模块中,我们也考虑了多种可能的情况,包括:
    1.云团中液滴的形成;2.云团中的液滴下落到(地)表面;3.下落后在表面形成液池;4.液池形成后可能会再次蒸发;5.与空气的混合、云团的传播;6.云团的降落;7.云团的抬升;8.密云的扩散模型;9.浮云的扩散模型;10.被动(高斯)扩散模型;
    燃烧性模块
    在PHAST 中可以计算得到以下可能的可燃性后果:
    1.沸腾液体膨胀蒸汽云爆炸(BLEVE)和火球;2.喷射火;3.池火;4.闪火;5.蒸汽云爆炸。
    燃烧性模块计算得到的结果有以下几种表征形式:
    1.辐射水平;2.闪火区域;3.超压水平;
    当计算晚期爆炸(云团扩散一段距离后发生的爆炸)产生的影响时,可燃物的质量
    是通过云团扩散模块提供的数据进行计算的。
    毒性模块
    毒性模块计算主要给出以下结果:
    1.浓度随下风向距离变化的曲线;2.某个位置浓度随时间的变化曲线;3.云团和剂量范围的俯视图;4.室内浓度的变化;5.毒性概率值或者云团中毒性载荷值;6.毒性致死率。

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