API 581 Annex 2A
Methodology.
Reliatic utilizes the standard API 581 methodology for risk-based inspection (RBI) to calculate the risk of mechanical equipment failure. This module focuses on the qualitative and quantitative stratification of Risk as the product of Probability of Failure (POF) and Consequence of Failure (COF).
01. Operational Logic & Traceability
Our engine implements an exhaustive rule-base extracted directly from API 581 Section 2. Every asset in the inventory is assigned a probability score (1-5) and a consequence category (A-E). Unlike black-box AI, every output is traceable to a specific equation.
Equation 2.4 - Thinning Damage FactorRef: Part 2, Sec 3.4
D_thin = max(D_process, D_local) × F_management
Reliatic validates 'F_management' against your yearly PSM audit score (Section 8.2).
Probability (POF)
Determined by damage factor mechanisms (Thinning, SCC, HTHA, Fatigue).
Consequence (COF)
Analyzed through environmental & safety impact (Flammable + Toxic Area).
02. Risk Stratification
The resulting Risk Index is mapped onto a 5x5 matrix. Reliatic prioritizes maintenance actions based on the location of the asset within this matrix.
- Critical Zone: Immediate Inspection Deployment
- Low Zone: Interval Extension Validated
03. Calibration API
v4.2 PROXY// RECALIBRATE_RISK_ENDPOINT [POST]
{
"asset_id": "V-102-ALPHA",
"telemetry": {
"vibration_delta": 0.042,
"temperature_k": 540,
"corrosion_last_ut": 12.4
},
"options": {
"standards": ["API_581", "ISO_31000"],
"persist_audit": true
}
}PreviousQuick Start Guide