Investigation Of Adhesion Formation In New Stainless Steel Trim Spring Operated Pressure Relief Valves

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Examination of proof test data for new (not previously installed) stainless steel (SS) trim spring operated pressure relief valves (SOPRV) reveals that adhesions form between the seat and disc in about 46% of all such SOPRV. The forces needed to overcome these adhesions can be sufficiently large to cause the SOPRV to fail its proof test (FPT) prior to installation. Furthermore, a significant percentage of SOPRV which are found to FPT are also found to ''fail to open'' (FTO) meaning they would not relief excess pressure in the event of an overpressure event. The cases where adhesions result in FTO … continued below

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11 p.

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Gross, Robert E.; Bukowski, Julia V. & Goble, William M. April 16, 2013.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 16 times. More information about this article can be viewed below.

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  • Savannah River Site (S.C.)
    Publisher Info: Savannah River Site (SRS), Aiken, SC (United States)
    Place of Publication: Aiken, South Carolina

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Examination of proof test data for new (not previously installed) stainless steel (SS) trim spring operated pressure relief valves (SOPRV) reveals that adhesions form between the seat and disc in about 46% of all such SOPRV. The forces needed to overcome these adhesions can be sufficiently large to cause the SOPRV to fail its proof test (FPT) prior to installation. Furthermore, a significant percentage of SOPRV which are found to FPT are also found to ''fail to open'' (FTO) meaning they would not relief excess pressure in the event of an overpressure event. The cases where adhesions result in FTO or FPT appear to be confined to SOPRV with diameters < 1 in and set pressures < 150 psig and the FTO are estimated to occur in 0.31% to 2.00% of this subpopulation of SS trim SOPRV. The reliability and safety implications of these finding for end-users who do not perform pre-installation testing of SOPRV are discussed.

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11 p.

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  • ASME 2013 Pressure Vessels And Piping Conference, Paris (France), 14-18 Jul 2013

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  • Report No.: SRNS-STI--2013-00218
  • Grant Number: DE-AC09-08SR22470
  • Office of Scientific & Technical Information Report Number: 1074389
  • Archival Resource Key: ark:/67531/metadc830903

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  • April 16, 2013

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  • May 19, 2016, 9:45 a.m.

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  • Dec. 6, 2016, 6:26 p.m.

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Gross, Robert E.; Bukowski, Julia V. & Goble, William M. Investigation Of Adhesion Formation In New Stainless Steel Trim Spring Operated Pressure Relief Valves, article, April 16, 2013; Aiken, South Carolina. (https://digital.library.unt.edu/ark:/67531/metadc830903/: accessed May 21, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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