Aligned Elements Web Client User Manual
3.1.272.24402
3.1.272.24402
  • Introduction
  • Basic Concepts
  • Get Started
    • Activate your Aligned Elements Account
    • Log In
    • Open a Project
    • Change Project
    • Create a new Project
    • The Project Start Site
    • Your Assigned Items
    • Manage Your User
    • Log Out
    • Enter Design Control Items
      • Work with Chapters
      • Work with Table Attributes
      • Inserting Images in Attributes
      • Working with Traces
      • Add Issues
      • Add Attachments
      • Collaborate using Comments
      • Favourites
      • Find in... Actions
      • Inconsistencies and Positive Cues
  • Document Object Actions
    • Move and Rearrange Chapters and Document Objects
    • Update Multiple Items
    • Generate Design Control Items
    • Copy Design Control Items
    • Lock Document Objects
    • Generate Reports
    • Export Document Objects
    • Import Document Objects
    • Copy Document Objects between Projects
    • Import Files
  • Explorers and Views
    • Project Explorer
    • File Explorer
    • Trace Explorer
    • Test Run Explorer
    • Project History
    • Chapter View
    • List View
    • Search Result View
    • Export to Excel in Grids
  • Project Status
    • Display Inconsistencies
    • Display Consistency Coverage
    • Display Risk Summary
    • Display DHF Index
  • Queries
    • Run a Query
    • Design a Query
    • Query Filters
  • Charts
    • Display a Chart
    • Design a Chart
  • Trace Tables
    • Run a Trace Table
    • Design a Trace Table
  • Work with Documents
    • Adding Word Document to File Objects
    • The Word Add-in. Adding Design Control Items to Documents
    • Sign Documents with Electronic Signatures
    • Save Files to Disk
    • Released Document View
  • Design Reviews
    • Conduct a Design Review
  • Risk Analysis
    • Perform a FMEA Risk Assessment
    • Perform a Preliminary Hazard Analysis
    • Relative vs. Absolute Mitigations
    • Potential Hazard
    • Using the Risk Analysis to assess the Software Safety Classification
  • Manage Tests
    • Test Runs
      • Planning a Test Run
        • The Burndown Chart
      • Executing a Test Run
      • Completing a Test Run
      • Test Run Functions
      • Test Runs and Linked Projects
      • Caching of Test Runs and Test Run Explorer
    • Classic Tests
  • Work with Tags
    • Add Tags
    • Filter views on Tags
    • Edit Tags
    • Tags and Snapshots
  • Assistants
    • Run an Assistant
  • Snapshots
    • Create a Snapshot
    • Display a Snapshot
    • Compare Snapshots
  • Settings
    • Project Information
    • Manage Users
    • Manage User Groups
    • Project Settings
    • Project Hierarchy
      • Branch Projects
      • Merge Projects
    • Unlock Objects
  • Dashboards
    • Select a Dashboard
    • Create a Dashboard
    • Remove a Dashboard
  • AI Features
    • AI Features in Aligned Elements
  • Aligned Elements Automation Tool
    • The Automation Tool
  • Web Administrator Tools
    • Manage Projects
    • Rename, Copy or Remove Project
    • Manage Users
    • Manage Permissions
    • Register a new Administrator
    • Inspect User Logs
    • Manage Templates
    • Download Log Files
  • Manage Service Configuration
  • Configure a Type Name Change
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  • Mitigations having a Relative Risk Reduction
  • Mitigations having an Absolute Risk Reduction
  1. Risk Analysis

Relative vs. Absolute Mitigations

Mitigations having a Relative Risk Reduction

Aligned Element is configured by default to calculate the new RPN using relative mitigations. This implies that each mitigation probability/severity reduction/visibility enhancement is subtracted from the original hazard/harm in an accumulative manner.

For example: Original Hazard/Harm: Severity=9, Probability=8 => RPN= 98=>72 First Mitigation with probability reduction 2, => new Probability 8-2=6 => NRPN= 96=>54 Second Mitigation with probability reduction 1, => new Probability 8-2-1= 5 => NRPN = 9*5=>45

This means that the NRPN after applying a mitigation is relative to the initial Hazard/Harm RPN. Depending on where the RPN start you can get a different NRPN when applying the same mitigations.

Mitigations having an Absolute Risk Reduction

Aligned Elements can also be configured to use absolute mitigations. This implies that an applied mitigation designates a new probability/severity/visibility to the hazard/harm.

For example: Original Hazard/Harm: Severity=9, Probability=8 => RPN= 98=>72 First applied Mitigation has a new probability 5 => NRPN= 95=>45 Second applied Mitigation has a new probability 6 => NRPN=9*5=>45

Note that the new probability in the first mitigation "overrides" the new probability in the second probability (i.e. Min(6,5)=>5) and that the second mitigation, therefore, has no additional risk reducing impact. With this convention the NRPN is absolute to the initial RPN after applying mitigations; where relative mitigations are calculated in an accumulative fashion, the absolute mitigations apply a Min/Floor function of the applied mitigations.

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