Asset Integrity ManagementNov 2024
Residual Life Assessment for LPG Transport Tank 090131 #B
A residual life assessment for an LPG transport tank, focused on vessel integrity, operating suitability, and periodic inspection planning.
Executive Snapshot
A faster way to understand the engagement
Project Overview
What this project covered
This project evaluated the continued serviceability of an LPG transport tank used for fuel transport and temporary storage. The review covered vessel identity and parameters, integrity interpretation, recommended operating envelope, and inspection interval planning as part of a structured life-extension basis.
Technical Facts
Structured data pulled from the project basis
MaterialSA 516 GR 70
Design Pressure18.00 kg/cm²
Design Temperature55 °C
Operating Pressure14.12 kg/cm²
Operating Temperature38 °C
Hydrostatic Test27 kg/cm²
Work Scope & Method
How the assignment was executed
Recalculate vessel integrity basis
The RLA recalculates thickness and pressure-vessel capability against applicable code requirements rather than relying only on age or certificate status.
Screen damage mechanisms and inspection scope
The report maps likely degradation modes, inspection method, and next inspection interval based on the service condition of the transport tank.
Convert the result into operating guidance
The final output links integrity status, MAWP, risk category, and maintenance actions into an operationally useful summary.
Context and delivery pressure
The client needed a practical integrity conclusion for a transport asset where operating continuity depended on both mechanical condition and a defensible inspection strategy.
How the work was structured
We translated the available equipment data and integrity basis into a clearer operating recommendation supported by inspection interval guidance and pressure-vessel references appropriate to the asset duty.
Key Findings
Important technical takeaways
The tank is still considered fit for operation on the assessed basis
The report concludes the tank is generally in good condition for service, with MAWP 20.16 kg/cm² and a 10-year residual-life decision basis.
Dominant damage mechanisms were screened as low-probability corrosion modes
External corrosion and general corrosion were identified as the relevant thinning mechanisms, while the overall qualitative risk was still categorized as medium.
Deliverables
Key outputs from the engagement
- 01Pressure vessel parameter review
- 02Residual life recommendation
- 03Inspection interval basis
- 04Operating suitability summary
Recommendations
Practical follow-up priorities
Perform regular inspection and maintenance to detect leakage, external corrosion, equipment damage, and other abnormal conditions.
Apply coating to areas showing corrosion indication to slow down external corrosion.
Mark the thickness-measurement points so future UT readings are taken at the same locations.
Keep operation aligned with SOP and risk-management discipline.
Ensure operating pressure never exceeds the MAWP of the vessel.