WF09: Perform Criticality Editing

Pre-requisites

• SRA Module: access to the Safety and Risk Assessment (SRA) Module enables the 'Criticality and Reliability Editor'.
• FBD Model: with functions defined, functional flows connected up and failure diagrams populated.
• Criticality Profile: default or custom criticality profile based off one of the criticality methods/types available in MADE.

Detailed Descriptions (numbered steps)

1. Access 'Criticality Profile Editor' from the Preferences tab of the main menu bar.
2. Select Criticality Profile available for the project from the drop-down menu to be assigned as the Active Project Profile.
3. Access 'Criticality (& Reliability) Editor' from under 'Analyses' tab, of the main menu bar.
4. Depending on the method of determining criticality with the set Criticality Parameter Configuration of the criticality profile, only FFMs that are considered in determining that criticality may need to be edited (e.g. only end effects FFMs or only start of path FFMs).
5. Select a FFM from the 'Item / Failure Selection' list, and edit Criticality values with the sliders or crisp values in the numerical input fields. Not all criticality parameters are relevant to the selected criticality profile and may be filtered out with the funnel icon filter button in the top right corner.
6. Determine if edits to Failure Diagram Criticality are required or skip to the review step.
7. Select a Fault or Failure Condition of the Failure Diagram, and edit Criticality values with the sliders or crisp values in the numerical input fields.
8. Access the 'Criticality Viewer' via 'Open View', from under the 'View' tab of the main menu bar.
9. Select a model item in the System Model viewer and review the criticality values that update in the Criticality Viewer.
10. Continue until all Criticality values necessary have been defined and reviewed.
11. Criticality editing has been performed, populating the FBD model with the data necessary for further analyses.

Fields referenced in the diagram

• Criticality Profile options: MIL-STD-1629A, Fuzzy Criticality, ISO 26262, RPN Criticality, ARP 4761 (Rev A), MIL-STD-882E

Decision points

• Edit FFM Criticality? — No → skip to Edit Failure Diagram Criticality decision; Yes → Edit FFM Criticality (step 5).
• Edit Failure Diagram Criticality? — No → skip to Access Criticality Viewer; Yes → Edit Failure Diagram Criticality (step 7).
• All Criticality Values Defined? — No → loop back to Edit FFM Criticality decision; Yes → Criticality Editing Performed.

Screenshot walkthrough (captions/labels extracted)

Step 1: Access Criticality Profile Editor

• 'Preferences' menu: Application Preferences, Project Preferences, Annotation Policy, Library Management, Modeling Preferences, Organization Details, Warning Preferences, Bond Analysis Preferences, FCM Threshold Preferences, Criticality Profile Editor (highlighted).
• Project Explorer tree: Vehicle System [4/28] > Coupling, Driveline [11/11] (Differential, Driveshaft, Half Shaft Front/Rear, Planetary Gearbox Front/Rear, Transmission, Wheel Front/Rear, Wheel Resistance Front/Rear), Power Generation [2/13] > Diesel Engine [8/8] (Air Filter, Coupling 1, Engine, Governor, Injector Pump, Lift Pump, Primary Fuel Filter, Secondary Fuel Filter), Fuel Tank [3/3], Vehicle.

Step 2: Set Active Project Profile

• "Criticality Profile Editor" tab: "Project Profiles" section — "Project profiles are saved in your project and are available to apply to your project. All version history is saved and any can be applied. Project profiles can not be edited." Active Project Profile dropdown: "PHMT Risk Assessment Criteria (FAA)". Table of Name/Modified/Owner/Type: PHMT Fuzzy Criticality, PHMT Risk Assessment Criteria (FAA) (selected), PHMT Risk Assessment Method (RAC), PHMT ISO26262 Criticality, PHMT RPN Criticality, PHMT 1629A Criticality — each owned by "PHM Technology Pty. Ltd." with types Fuzzy Criticality, ARP 4761 (Rev A), MIL-STD-882E, ISO26262, Risk Priority Number (RPN), MIL-STD-1629A.
• "Criticality Profile Summary" panel: Name "PHMT Risk Assessment Method (RAC)", Description "PHMT Risk Assessment Method (RAC)", Owner "PHM Technology Pty. Ltd.", date "August 14 2017, 07:59:43 GMT".
• "Application Profile Templates" section: "Application profile templates are saved to your MADE application. Application profile templates are designed to be edited and can be used to create project profiles." Table: PHMT 1629A Criticality, PHMT Fuzzy Criticality, PHMT ISO26262 Criticality, PHMT RPN Criticality, PHMT Risk Assessment Criteria (FAA), PHMT Risk Assessment Method (RAC), Custom 882E Criticality Profile (modified March 18 2026), Custom ISO26262 Criticality (modified August 06 2025).
• "Criticality Parameter Strategy" table: Name/Strategy/Default Value — Probability/Occurrence: "Earliest in the Path (edited and default ...)" = 10; Severity: "Latest in the Path (edited and default v...)" = 10; Software Control: "Highest in the Path (edited values)" = 0.

Step 3: Access Criticality Profile Editor (Criticality & Reliability Editor)

• 'Analyses' menu: Fault Tree, Response Paths, Connection Matrix, Common Mode Analysis, Critical Item Analysis, Criticality & Reliability Editor (highlighted), Technical Budget Analysis, Diagnostic Analyses, Failure Rate Prediction, Markov Analysis, RBD Analysis, Reliability Allocation Editor, Back-Fit RCM, Classic RCM, Maintenance Cost Estimates.

Step 5: Edit Functional Failure Mode (FFM) Criticality

• "R/C Properties Editor" — "Criticality & Reliability Editor": left panel "Item / Failure Selection" (dropdown "Criticality") shows tree Vehicle System > Convert > Mechanical - rotational - Angular velocity (x2), Coupling, Driveline, Power Generation, Vehicle.
• Right panel "Function Flow Criticality": Selected Profile "PHMT Risk Assessment Criteria (FAA)", Criticality Method "ARP 4761 (Rev A)". Sliders under "High": Difficulty of Detection 5.8 ("Moderate"), Probability/Occurrence 5.0 ("Remote"), Severity 4.0 ("Minor"), Controllability 7.5 ("Controllability 2"), Software Control (MILSTD-882E) 5.8 ("Redundant Fault Tolerant"). Sliders under "Low": Probability/Occurrence 5.0 ("Remote"), Severity 4.0 ("Minor", partially visible).

Step 7: Edit Failure Diagram Criticality

• Same Criticality & Reliability Editor, "Item / Failure Selection" tree expanded to Vehicle System > Convert (2 FFMs), Coupling > Branch (x2), Failure Diagram > Cracked (selected), Fractured; Differential, Driveshaft, Half Shaft Front/Rear, Planetary Gearbox Front/Rear, Transmission, Wheel Front/Rear, Wheel Resistance Front/Rear, Power Generation, Vehicle.
• "Failure Criticality" panel: Selected Profile "PHMT Risk Assessment Criteria (FAA)", Criticality Method "ARP 4761 (Rev A)". Sliders: Difficulty of Detection 3.1 ("Low"), Probability/Occurrence 4.2 ("Extremely Remote"), Controllability 6.6 ("Controllability 2"), Software Control 6.6 ("Semi-Autonomous").

Step 8: Access Criticality Viewer

• 'View' menu: Open Module, Open View (submenu highlighted) > Project Explorer, Properties, Failure Concepts, Hazard Concepts, Image, Library, Outline, Palette, Problems, Component List, Test Points, Connection Viewer, Critical Items, Criticality Viewer (highlighted, tooltip "Show Criticality Viewer"), Current Diagnostic Analysis, Technical..., Equation Set, Failure Step Table, Fault Code Viewer, Report History. Also: Reset Module, System Model Filtering, Capture screen, Show Grid, Snap to Geometry, Zoom In (Ctrl+=), Zoom Out (Ctrl+-).

Step 9: Review Criticality Values

• Project Explorer tree (left) expanded to Driveline > Failure Diagram (Cause, Mechanism, Fault [2]), Differential, Driveshaft, Half Shaft Front/Rear, Planetary Gearbox Front/Rear, Transmission, Wheel Front/Rear/Resistance, Power Generation (Functions, Control Measures, Control Unit, Diesel Engine [8/8]), Fuel Tank [3] (Functions, Pairs [2], Inlet, Lining, Outlet).
• "Vehicle System" canvas showing Power Generation, Coupling, Driveline, Vehicle blocks with flow labels (Liquid, Gas, Electrical / Mechanical - rotational).
• "Criticality Viewer - Driveline" table: columns Type, Function, Flow, Flow Property, Mode, Difficulty of Detection, Occurrence, Severity, Failure Mode Ratio, End Effect Probability, System Failure, Controllability, Software Control. Rows: Fault/Fractured (Difficulty 10.0, Occurrence 1.0, Severity 1.0, FMR 1.0, EEP 1.00, Controllability 10.0, Software Control 0.0); Fault/Cracked (3.1, 4.2, 1.0, 1.00, Controllability 6.6, Software Control 6.6); Effect/Branch/Mechanical - rotational/Angular velocity/Low (10.0,1.0,10.0,1.0,1.00, System Failure "Yes", Controllability 10.0, Software Control 0.0); Effect/Branch/.../High (same pattern); two more Effect/Branch rows for Low/High with System Failure "Yes".