API 581 Expert System
Overview
The API 581 expert system incorporates the SPE and SPE+ expert system and provides a fully compliant API 581 assessment tool for analysis of equipment risk and inspection planning. This methodology is integrated into the SPE API 580 RBI functionality such that qualitative override – or assessment of non-API581 damage mechanisms – is possible. In addition to this, an API581 / SPE+ hybrid functionality is used which deploys SPE+ PoF assessment and API581 CoF assessment in the event that damage mechanisms are present that are NOT covered by API 581.
API 581 provides additional fully quantitative RBI methodology on top of SPE Plus.
Codes / Standards
23mins
Asset Types
In addition to the Asset Types listed in the follow table, API581 includes Asset Types defined in the SPE Expert System and Asset Types defined in the SPE Plus Expert System
Asset Type |
Description |
|---|---|
AST Bottom (lvl 1) |
RBI Component (API 581) |
AST Course (lvl 1) |
RBI Component (API 581) |
Corrosion Circuit (lvl 1) |
RBI Component (API 581) |
HE Tube Bundle (Contained)(lvl 1) |
RBI Component (API 581) |
HE Tube Bundle (Uncontained)(lvl 1) |
RBI Component (API 581) |
Heat Exchanger Vessel (lvl 1) |
RBI Component (API 581) |
Inventory Groups |
RBI Component (API 581) |
PRD (lvl 1) |
RBI Component (API 581) |
Vessel Segment (lvl 1) |
RBI Component (API 581) |
Asset Information
Asset |
Description |
Assigned to Type(s) |
|---|---|---|
External Metal Loss / Cracking |
PoF Calculation using API RP 581 3rd Edition |
|
HTHA and Brittle Fracture |
PoF Calculation using API RP 581 3rd Edition |
|
Internal Cracking |
PoF Calculation using API RP 581 3rd Edition |
|
Internal Metal Loss |
PoF Calculation using API RP 581 3rd Edition |
|
Inventory Group Information |
||
L2 CoF Calculations (1) |
||
L2 CoF Calculations (2) |
||
L2 CoF Calculations (3) |
||
L2 CoF Calculations (4) |
||
L2 CoF Calculations (5) - Flammable |
||
L2 CoF Calculations (6) - Toxic |
||
L2 CoF Calculations (7) - NFNT, Area, Financial |
||
L2 CoF Calculations Summary |
||
L2 CoF Inputs |
||
Mechanical Fatigue |
PoF Calculation using API RP 581 3rd Edition |
|
PRD Data and Assessment |
||
PRD RBI - Protected Component |
Risk Models
High level diagram summarising risk assessment approach. (Should identify each damage mode/mechanism as a single item & also call out compliance with individual codes)
Inspection / Maintenance Events
In addition to the events listed below, SPE Plus includes Inspection / Maintenance Events defined in the SPE Expert System and Inspection / Maintenance Events defined in the SPE Plus Expert System.
Event Type |
Description |
Assigned to Type(s) |
|---|---|---|
Defect Assessment (Part 5 Lvl1) |
API 579 Part 5 level 1 defect Assessment |
|
Defect Assessment (Pt4 lvl1) - GWL |
General Wall Loss |
|
PRD Inspection |
||
Tube Bundle Inspection or Record |
Dashboards / Reports
Template Name |
Description |
Category |
|---|---|---|
API 581 COF Analysis |
‘How to’ Guides |
|
API 581 POF Analysis |
‘How to’ Guides |
|
API 581 Risk Assessment Results |
‘How to’ Guides |
Client Specific Lists
An implementation of API581 will require the population of the Client-Specific Lists defined in the SPE Expert System.
Revision History
The following table summarises new and updated feature sets that have been included in major releases of the Expert System.
Revision No. |
Description |
|---|---|
1-10 |
|
A comprehensive (technical) list detailing ALL minor UI changes and bug fixes can be made available to customers who have a current subscription to this Expert System. Please email support@nexusic.com to request the complete list.