I am still reading this post and have enjoyed the well informed and thoughtful discussion. The disagreement in this thread reflects the confusion and uncertainty that I have run into when talking with other people on the subject. The way I see it, a disk rupture pressure is required to be...
The inspector in our plant refuses to allow rupture disks that have a pressure rating at ambient that is greater than MAWP. I say that the ASME only requires that the rupture disk pressure rating is less than MAWP at the temperature it is expected to rupture. Our vendor always stamps the disk...
