Asset Integrity ManagementJun 2025
Residual Life Assessment for Safety Valve PSV-T-01
A residual life assessment for a safety valve protecting an LPG storage system, focused on operating suitability, failure modes, and recommended inspection planning.
Executive Snapshot
A faster way to understand the engagement
Project Overview
What this project covered
This project evaluated the continuing serviceability of PSV-T-01 as a protective device on an LPG storage tank system. The review covered equipment identity and parameters, likely failure modes, inspection planning, residual life framing, and risk-based operating recommendations.
Technical Facts
Structured data pulled from the project basis
TypeConventional
ManufacturerRego
Model / SizeA 3149 G / 2-1/2 in MNPT
Design Pressure250 Psig (17.57 kg/cm²)
Operating Pressure142.23 Psig (10.00 kg/cm²)
Required Relief Capacity17361 SCFM
Work Scope & Method
How the assignment was executed
Review technical and maintenance records
The RLA begins with document review, inspection-history review, and validation of the installed valve data against applicable code references.
Assess damage mechanism and remaining life
The work combines mechanism screening, fitness-for-service logic, and remaining-life evaluation using design and inspection information.
Translate the result into inspection strategy
The report also converts the RLA outcome into risk framing plus recommended inspection method and interval for future operation.
Context and delivery pressure
The client required a clear life-extension basis for a critical protection device, where the assessment had to balance mechanical integrity, operating set points, and realistic failure scenarios.
How the work was structured
We translated inspection data and operating parameters into a concise residual-life basis supported by failure-mode review, inspection planning, and operating guidance for continued service.
Key Findings
Important technical takeaways
Installed relief capacity is above the required capacity
The valve is reported with 27750 SCFM capacity against a required 17361 SCFM, which strengthens the case for continued serviceability.
The report is built as a full RLA package, not only a certificate
The document structure includes mechanism review, inspection planning, remaining-life calculation, POF/COF logic, and risk-result framing.
Deliverables
Key outputs from the engagement
- 01PSV integrity and parameter review
- 02Failure mode and risk summary
- 03Residual life recommendation
- 04Inspection planning basis