The fundamentals of pressure relief applications are safety, efficiency, maintenance level, downtime duration, operating costs and environmental friendliness. Does the rupture pin alleviate the issues that go with such applications, or is the rupture disc a more sensible option? This article discusses the juxtaposition between the two and gives an insight as to which is the clear choice for pressure relief. There are two basic, non-reclosing primary methods outlined by ASME section VIII for pressure relief the rupture pin and rupture disc. It is important to understand the advantages and disadvantages of each so that the correct selection for a specific pressure relief application can be made. According to ASME Section VIII Division I, both rupture pins and rupture discs may be used as a primary or sole relieving device (see Figure I). The one caveat to remember about non-reclosing relief devices is that once they are open, they remain open. They will not reclose until manually replacing the rupture pin or disc.
展开▼
