Asset Integrity and Reliability
Risk based inspection, reliability centred maintenance, fitness for service, and integrity operating windows that keep ageing assets fit for service
What this element is and why it matters
Asset Integrity is the lifecycle discipline that keeps pressure vessels, piping, rotating equipment, storage tanks, pipelines, and safety critical instrumentation fit for service as they age. The element maps to OSHA 1910.119(j) and integrates API 580 and 581 risk based inspection, SAE JA1011 reliability centred maintenance, API 579 1 fitness for service, the API RP 571 damage mechanisms, API RP 584 integrity operating windows, and ISO 55001. Our team brings these strands together into one coherent programme for your facility.
Individual significance for organisations
Asset integrity is where process safety meets the balance sheet. Sites that manage integrity proactively extend asset life, optimise inspection spend by 30 to 50 percent, and avoid the loss of containment events that dominate Tier 1 process safety event statistics. Without it, ageing infrastructure becomes a latent liability and insurance steadily becomes more expensive.
Contribution to Risk Based Process Safety (RBPS)
Asset Integrity is the equipment side complement to Operating Procedures (Element 8), where operations governs how the plant is run and integrity governs whether the plant is fit to be run at all. It feeds Process Knowledge (Element 6) the equipment data, integrates with MOC (Element 13), and provides the inspection record that Auditing (Element 19) verifies. Element 10 is one of the most heavily inspected elements during OSHA and MSIHC audits.
What compliant execution looks like
How we implement this element
A focused six step methodology calibrated to deliver asset integrity and reliability as a working capability rather than a documented compliance artefact.
We build the asset hierarchy per ISO 14224, score criticality across safety, environmental, and production impact, and align it with the safety critical element register expected by the UK HSE.
We work to API RP 571, covering thinning, high temperature hydrogen attack, hydrogen induced cracking, stress corrosion cracking, corrosion under insulation, and microbially influenced corrosion, and map the corrosion loops against chemistry, temperature, and velocity.
We build risk based inspection worksheets per API 580 and 581, run reliability centred maintenance failure mode and effects analysis per SAE JA1011, and set the inspection and maintenance strategy.
We carry out API 579 1 Level 1, 2, and 3 assessments, re rate the remaining strength factor and MAWP, and integrate the result with MOC and PHA revalidation.
We work to API RP 584 across critical, standard, and informational windows, set up DCS monitoring with an excursion workflow, and route excursions through mechanical integrity engineering review.
We stand up an ISO 55001 aligned system with a KPI cascade, an annual self audit and triennial third party audit, and the mechanical integrity evidence OSHA PSM requires.
Element implementation flow chart
A decision gated workflow that shows the actual sequence of activities from initiation through steady state operation, with key decision points highlighted.
What we produce
- An asset register with criticality ranking
- A damage mechanism catalogue per API RP 571
- A risk based inspection and reliability centred maintenance programme per asset
- Fitness for service assessments per API 579 1
- An integrity operating window register per API RP 584
- An integrity management system governance framework per ISO 55001
Where execution fails
- Time based inspection where risk based inspection would optimise the effort
- A damage mechanism catalogue that misses corrosion under insulation, high temperature hydrogen attack, or microbially influenced corrosion
- Integrity operating windows that exist on paper but are never monitored
- Fitness for service used to defer a decision rather than properly assess the equipment
Codes this element is built on
Explore related elements in this framework
Risk Based Process Safety (RBPS) full element index
Talk to us about implementing Asset Integrity and Reliability
We can scope this element implementation against your facility, regulatory context, and existing management system maturity, then integrate it with the other Risk Based Process Safety (RBPS) elements you already operate.