Emergency relief system design: The DIERS users group safety relief valve example problem
- Union Carbide Corp., South Charleston, WV (United States)
Emergency relief system design involving two-phase flow is an evolving and complex technology. Aspects of alternative design techniques have been published. Well-documented, comprehensive design methods for safety relief valves, rupture disks and breather vents, however, are not readily available and example problems supported by data do not exist. Design Institute for Emergency Relief Systems (DIERS) Users Group members recently completed an example rating problem consisting of a safety relief valve mounted in a typical industrial configuration. Participants were asked to compute the flow through the device and to calculate the inlet pipe irreversible pressure loss and discharge pipe back pressure. Case studies involving various flows and physical conditions were formulated. A {open_quotes}Modified Delphi{close_quotes} technique was used to encourage participants to work until the {open_quotes}consensus{close_quotes} result was achieved. The exercise served to educate participants in the complexities and subtleties of emergency relief system design involving safety relief installations as compared to ideal nozzle calculations. All learned from the various calculation techniques used by others to solve the problem. Participants corrected parts of their computer codes and/or added procedures to address aspects of the problem. The present example problem is not supported by data. Available safety relief valve two-phase flow data suggest complexity not presently included in problem solutions. Future modification of the results may be required as additional considerations are incorporated into existing analytical methods and computer codes. 20 refs., 21 tabs.
- OSTI ID:
- 255388
- Report Number(s):
- CONF-9508216-; TRN: 96:002769-0016
- Resource Relation:
- Conference: International symposium on runaway reactions and pressure relief design, Boston, MA (United States), 2-4 Aug 1995; Other Information: PBD: 1995; Related Information: Is Part Of International symposium on runaway reactions and pressure relief design; Melhem, G.A.; Fisher, H.G. [eds.]; PB: 779 p.
- Country of Publication:
- United States
- Language:
- English
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