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首页> 外文会议>Global Congress on Process Safety >Overpressure Protection of a Pressure Vessel by System Design through the Application of ASME VIII UG-140 in lieu of a Relief device by an Appropriate Choice of MAWP and/or by Safety Instrumented System
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Overpressure Protection of a Pressure Vessel by System Design through the Application of ASME VIII UG-140 in lieu of a Relief device by an Appropriate Choice of MAWP and/or by Safety Instrumented System

机译：Overpressure Protection of a Pressure Vessel by System Design through the Application of ASME VIII UG-140 in lieu of a Relief device by an Appropriate Choice of MAWP and/or by Safety Instrumented System

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This technical paper addresses the new provision of UG-140 of ASME VIII Division 11 and how it impacts on the traditional overpressure protection of a pressure vessel. It offers the basics of a Safety Instrumented System (SIS), and explains the circumstances under which the user can replace the traditional relief devices to protect a pressure vessel from overpressure either by an appropriate choice of Maximum Allowable Working Pressure (MAWP) so that the unmitigated pressures from all credible scenarios are less than MAWP of the vessel or through a safety instrumented system or a combination of safety instrumented system and traditional relief devices. Overpressure protection by system design in lieu of a relief device is deceptively simple and deceptively economical. The paper also explains the dependence of ASME B31.32 (process piping code) on ASME VIII Division 1 (unfired pressure vessel code), and explains how the concatenation effect of the latter on the former implicitly mandates High Integrity Protection System (HIPS) -subset of the Safety Instrumentation System- to replace the traditional relief devices for the protection of a piping system. Overpressure protection of a pressure vessel using ASME VIII Division 1, UG-140, has a place in industrial process safety. A safety instrumented system is worth considering when traditional relief devices are inoperable due to the hostile nature of the fluid or the required relief device is impractical. When traditional relief devices are replaced by a safety instrumented system, it may be the optimum choice if viewed through an optimization study with the traditional protection of a pressure vessel by relief devices as the base case, if the base case is a viable option. The cost of initial engineering, hardware and associated software cost, and life cycle cost of the safety instrumented system should be compared with the base case to justify the option of the safety instrumented system.
机译：本技术论文解决了ASME VIII师第11款的新规定，以及它如何影响压力容器的传统过度压力保护。 It offers the basics of a Safety Instrumented System (SIS), and explains the circumstances under which the user can replace the traditional relief devices to protect a pressure vessel from overpressure either by an appropriate choice of Maximum Allowable Working Pressure (MAWP) so that the来自所有可信情景的未触发压力小于船舶的MAWP或通过安全仪表系统或安全仪表系统和传统浮雕装置的组合。通过系统设计的过度压抑保护代替浮雕装置巧妙而巧妙地经济。本文还解释了ASME B31.32（Process Piping Code）对ASME VIII氏派1（未用压力船舶代码）的依赖性，并解释了后者对前者的级联效应如何隐含地授权高完整性保护系统（臀部） - 安全仪表系统的子集 - 更换传统的浮雕装置，以保护管道系统。使用ASME VIII划分1，UG-140的压力容器的过度压抑保护具有工业过程安全的位置。当传统的浮雕装置由于流体的敌对性质或所需的浮雕装置不切实际，当传统的浮雕装置无法操作时，值得考虑的安全仪表系统值得考虑。当传统的浮雕装置被安全仪器系统取代时，如果通过优化研究通过通过浮雕装置作为基础壳体的传统保护，可以通过优化研究来观看，如果基本情况是可行的选择，则可以是最佳选择。应与初始工程，硬件和相关软件成本的成本，以及安全仪表系统的生命周期成本与基础案例进行比较，以证明安全仪表系统的选择。

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