Risk Based Process Safety (RBPS)Manage Risk

Asset Integrity & Reliability

RBI, RCM, FFS, IOW — keeping ageing assets fit-for-service and incident-free

Strategic context

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 through ageing. The element maps to OSHA 1910.119(j) and integrates API 580/581 RBI, SAE JA1011 RCM, API 579-1 FFS, API RP 571 damage mechanisms, API RP 584 IOW, and ISO 55001.

Asset Integrity & Reliability

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 30-50%, and avoid the loss-of-containment events that dominate Tier 1 PSE statistics. Without it, ageing infrastructure becomes a latent liability and insurance becomes increasingly expensive.

Contribution to Risk Based Process Safety (RBPS)

Asset Integrity is the equipment-side complement to Operating Procedures (Element 8) — operations handles how the plant is run, AIM handles whether the plant is fit to be run. 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 / MSIHC audits.

Key requirements

What compliant execution looks like

Mechanical integrity programme per OSHA 1910.119(j)
Risk-based inspection per API RP 580/581
Reliability-centered maintenance per SAE JA1011
Fitness-for-service per API 579-1 / ASME FFS-1
Integrity operating windows per API RP 584
Pipeline integrity per ASME B31.8S / API 1160 / PNGRB India
Implementation methodology

How we implement this element

A focused 6-step methodology calibrated to deliver asset integrity & reliability as a working capability — not a documented compliance artefact.

Asset Register & Criticality

Build hierarchy per ISO 14224; score criticality on safety / environmental / production; align with SCE register per UK HSE.

Damage Mechanism Catalogue

Per API RP 571 — thinning, HTHA, HIC, SCC, CUI, MIC; map corrosion loops with chemistry / temperature / velocity.

RBI / RCM Programme

Build risk-based inspection worksheets per API 580/581; RCM FMEA per SAE JA1011; inspection / maintenance strategy.

FFS & Run-Repair-Replace

API 579-1 Level 1/2/3 assessments; RSF / MAWP re-rating; MOC integration with PHA revalidation.

IOW Programme

Per API RP 584 — critical / standard / informational windows; DCS monitoring with excursion workflow; MI engineering review.

AIMS Governance

ISO 55001-aligned system; KPI cascade; annual self-audit / triennial third-party; OSHA PSM MI evidence.

Implementation flow

Element-implementation flow chart

Decision-gated workflow showing the actual sequence of activities — from initiation through steady-state operation — with key decision points highlighted.

Start
PSM owner / reliability engineer initiates AIM programme
Asset Register Build
ISO 14224 hierarchy + criticality ranking
Damage-Mechanism Mapping
API RP 571 per process loop and equipment
RBI Worksheets
API 580/581 risk × consequence per equipment
Decision
High Risk Equipment?
Decision gate
Inspection Strategy
Technique selection per damage mechanism
Inspection Execution
API 510 / 570 / 653 inspections per interval
FFS Assessment Triggered?
If defect found above acceptance criteria
API 579-1 FFS Level 1/2/3
RSF / MAWP re-rating; run-repair-replace decision
MOC Integration
Repair / replace MOC trigger; PHA revalidation
IOW Monitoring Active
DCS-monitored windows with excursion workflow
AIMS Governance Live
ISO 55001 KPI cascade, annual audit, MI evidence
Deliverables

What we produce

  • Asset register with criticality ranking
  • Damage-mechanism catalogue per API RP 571
  • RBI / RCM programme per asset
  • FFS assessments per API 579-1
  • IOW register per API RP 584
  • AIMS governance framework per ISO 55001
Common pitfalls

Where execution fails

  • Time-based inspection where RBI would optimise
  • Damage mechanism catalogue missing CUI / HTHA / MIC
  • IOW windows that exist on paper but aren't monitored
  • FFS used to defer rather than properly assess
Related elements

Explore related elements in this framework

All elements in this framework

Risk Based Process Safety (RBPS) — full element index

Implement this element

Talk to us about implementing Asset Integrity & Reliability

We can scope this element implementation against your facility, regulatory context, and existing management-system maturity — and integrate it with the other Risk Based Process Safety (RBPS) elements you already operate.