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

Abstract

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.

Authors:
 [1];  [2];  [3]
  1. Savannah River Site (SRS), Aiken, SC (United States)
  2. Villanova University, Villanova, PA (United States)
  3. exida, Sellersville, PA (United States)
Publication Date:
Research Org.:
Savannah River Site (SRS), Aiken, SC (United States)
Sponsoring Org.:
USDOE (United States)
OSTI Identifier:
1074389
Report Number(s):
SRNS-STI-2013-00218
TRN: US1300273
DOE Contract Number:  
DE-AC09-08SR22470
Resource Type:
Conference
Resource Relation:
Conference: ASME 2013 Pressure Vessels And Piping Conference, Paris (France), 14-18 Jul 2013
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Gross, Robert E., Bukowski, Julia V., and Goble, William M. Investigation Of Adhesion Formation In New Stainless Steel Trim Spring Operated Pressure Relief Valves. United States: N. p., 2013. Web.
Gross, Robert E., Bukowski, Julia V., & Goble, William M. Investigation Of Adhesion Formation In New Stainless Steel Trim Spring Operated Pressure Relief Valves. United States.
Gross, Robert E., Bukowski, Julia V., and Goble, William M. 2013. "Investigation Of Adhesion Formation In New Stainless Steel Trim Spring Operated Pressure Relief Valves". United States. https://www.osti.gov/servlets/purl/1074389.
@article{osti_1074389,
title = {Investigation Of Adhesion Formation In New Stainless Steel Trim Spring Operated Pressure Relief Valves},
author = {Gross, Robert E. and Bukowski, Julia V. and Goble, William M.},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/1074389}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 16 00:00:00 EDT 2013},
month = {Tue Apr 16 00:00:00 EDT 2013}
}

Conference:
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