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Fail-Safe? A Study About the Integrity of Safety Valves for Tanks for Dangerous Goods

[+] Author Affiliations
F. Reich, F. Otremba, A. Würsig

BAM Federal Institute for Materials Research and Testing, Berlin, Germany

Paper No. IMECE2013-62204, pp. V015T16A025; 5 pages
doi:10.1115/IMECE2013-62204
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 15: Safety, Reliability and Risk; Virtual Podium (Posters)
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5644-4
  • Copyright © 2013 by ASME

abstract

In Europe, tanks designed on different safety philosophies are used for transporting one and the same liquid dangerous goods (Krautwurst, 2011). Owing to this circumstance, the BAM was commissioned by the BMVBS to conduct a research project designed to analyse and assess the equipment of tanks. Furthermore in these project were researched some failure mechanism of pressure relief devices (PRD).

Based on the knowledge gained, possible solutions were worked out under safety-relevant aspects that would benefit tank transport by providing a lower hazard potential. Besides looking at the mode of operation and the construction of PRV, their blow-off characteristics and total flow rate are considered from a safety engineering point of view.

Based on in-depth studies, a concept for and the further approach to examinations of the failure limits of PRD, especially of spring loaded relief valves, was developed and comprehensively described in the report “The use of safety devices, particularly safety valves, on transport containers” (Pötzsch, Reich, & Jochems, 2011).

The purpose of this study was to investigate failure causes of safety valves by normal modes and accidental fire heat loads. A series of investigations for different influences using safety valves for tanks were obtained. Testing vibration modes and corrosion presents some design limits. Experimental study of a pressure vessel engulfing in fire identify significant design limits. The complete set of results provides direct information of fail-safe modes and discusses the usage.

Copyright © 2013 by ASME
Topics: Safety , Valves

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