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Slip Blinds at Higher Pressures

[+] Author Affiliations
Jaan Taagepera

Valero Refining Company

Don La Bounty

Fluor Corporation

Paper No. PVP2004-2601, pp. 91-96; 6 pages
  • ASME/JSME 2004 Pressure Vessels and Piping Conference
  • Design and Analysis of Pressure Vessels, Heat Exchangers and Piping Components
  • San Diego, California, USA, July 25–29, 2004
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4672-5
  • Copyright © 2004 by ASME


When maintaining equipment or piping, it must be isolated to assure a safe working environment. Separating flange pairs and inserting a blind flange against the process side prevents hazardous substances from entering the work area. Slip blinds are often used for this type of service. Slip blinds, however, are generally limited to low pressure service since at excessive pressures the blind will become dished and may leak or become impossible to remove. In this paper, slip blinds of various sizes were hydrostatically tested to determine their deformation as a function of pressure. Nonlinear finite element analysis was used to determine the theoretical deformation of slip blinds. The goal of the testing and FEA was to determine the pressure required to permanently deform a 1/4” thick slip blind by one half its thickness.

Copyright © 2004 by ASME



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