The Effects of Maintenance Actions on the PFDavg of Spring Operated Pressure Relief Valves
Abstract
The safety integrity level (SIL) of equipment used in safety instrumented functions is determined by the average probability of failure on demand (PFDavg) computed at the time of periodic inspection and maintenance, i.e., the time of proof testing. The computation of PFDavg is generally based solely on predictions or estimates of the assumed constant failure rate of the equipment. However, PFDavg is also affected by maintenance actions (or lack thereof) taken by the end user. This paper shows how maintenance actions can affect the PFDavg of spring operated pressure relief valves (SOPRV) and how these maintenance actions may be accounted for in the computation of the PFDavg metric. The method provides a means for quantifying the effects of changes in maintenance practices and shows how these changes impact plant safety.
- Authors:
-
- Villanova University, Villanova, PA (United Staes)
- Exida LLC, Sellersville PA, (United States)
- Savannah River Nuclear Solutions (SRNS), Aiken, SC (United States)
- Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
- Publication Date:
- Research Org.:
- Savannah River Site (SRS), Aiken, SC (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1171508
- Report Number(s):
- SRNL-STI-2014-00404
Journal ID: ISSN 0094-9930
- Grant/Contract Number:
- AC09-08SR22470
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Pressure Vessel Technology
- Additional Journal Information:
- Journal Volume: 137; Journal Issue: 6; Journal ID: ISSN 0094-9930
- Publisher:
- ASME
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Harris, S., Gross, R., Goble, W, and Bukowski, J. The Effects of Maintenance Actions on the PFDavg of Spring Operated Pressure Relief Valves. United States: N. p., 2015.
Web. doi:10.1115/PVP2014-29118.
Harris, S., Gross, R., Goble, W, & Bukowski, J. The Effects of Maintenance Actions on the PFDavg of Spring Operated Pressure Relief Valves. United States. https://doi.org/10.1115/PVP2014-29118
Harris, S., Gross, R., Goble, W, and Bukowski, J. Tue .
"The Effects of Maintenance Actions on the PFDavg of Spring Operated Pressure Relief Valves". United States. https://doi.org/10.1115/PVP2014-29118. https://www.osti.gov/servlets/purl/1171508.
@article{osti_1171508,
title = {The Effects of Maintenance Actions on the PFDavg of Spring Operated Pressure Relief Valves},
author = {Harris, S. and Gross, R. and Goble, W and Bukowski, J},
abstractNote = {The safety integrity level (SIL) of equipment used in safety instrumented functions is determined by the average probability of failure on demand (PFDavg) computed at the time of periodic inspection and maintenance, i.e., the time of proof testing. The computation of PFDavg is generally based solely on predictions or estimates of the assumed constant failure rate of the equipment. However, PFDavg is also affected by maintenance actions (or lack thereof) taken by the end user. This paper shows how maintenance actions can affect the PFDavg of spring operated pressure relief valves (SOPRV) and how these maintenance actions may be accounted for in the computation of the PFDavg metric. The method provides a means for quantifying the effects of changes in maintenance practices and shows how these changes impact plant safety.},
doi = {10.1115/PVP2014-29118},
journal = {Journal of Pressure Vessel Technology},
number = 6,
volume = 137,
place = {United States},
year = {Tue Dec 01 00:00:00 EST 2015},
month = {Tue Dec 01 00:00:00 EST 2015}
}
Search WorldCat to find libraries that may hold this journalWorks referencing / citing this record:
Analysis of spring operated pressure relief valve proof test data: Findings and implications
journal, October 2018
- Bukowski, Julia V.; Goble, William M.; Gross, Robert E.
- Process Safety Progress, Vol. 37, Issue 4