Date of download: 10/15/2017 Copyright © ASME. All rights reserved. From: The Effects of Maintenance Actions on the Average Probability of Failure on Demand of Spring Operated Pressure Relief Valves J. Pressure Vessel Technol. 2015;137(6):061601-061601-7. doi:10.1115/1.4030084 Figure Legend: Conceptual representation of a typical SOPRV

Date of download: 10/15/2017 Copyright © ASME. All rights reserved. From: The Effects of Maintenance Actions on the Average Probability of Failure on Demand of Spring Operated Pressure Relief Valves J. Pressure Vessel Technol. 2015;137(6):061601-061601-7. doi:10.1115/1.4030084 Figure Legend: Plot of distribution of SOPRV by orifice diameter and set pressure with FTO SOPRV noted

Date of download: 10/15/2017 Copyright © ASME. All rights reserved. From: The Effects of Maintenance Actions on the Average Probability of Failure on Demand of Spring Operated Pressure Relief Valves J. Pressure Vessel Technol. 2015;137(6):061601-061601-7. doi:10.1115/1.4030084 Figure Legend: Plot of distribution of SOPRV by proof test ratio, R, and year of proof test with FTO SOPRV noted as to cause: random versus user responsibility

Date of download: 10/15/2017 Copyright © ASME. All rights reserved. From: The Effects of Maintenance Actions on the Average Probability of Failure on Demand of Spring Operated Pressure Relief Valves J. Pressure Vessel Technol. 2015;137(6):061601-061601-7. doi:10.1115/1.4030084 Figure Legend: Plots of PFDavg versus TP for maintenance scenarios 1a, 2a, 3a, and 4

Date of download: 10/15/2017 Copyright © ASME. All rights reserved. From: The Effects of Maintenance Actions on the Average Probability of Failure on Demand of Spring Operated Pressure Relief Valves J. Pressure Vessel Technol. 2015;137(6):061601-061601-7. doi:10.1115/1.4030084 Figure Legend: Plots of PFDavg versus TP for maintenance scenarios 1b, 2b, 3b, and 4