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Session 3.3: Control Measures

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Session 3.3: Control Measures

SESSION 3.3 OUTLINE

3.3.1: WHAT ARE CONTROL MEASURES? 3.3.2: Control Measure Taxonomy 3.3.3: Create Control Measures using Failure Diagram 3.3.4: Barrier Matrix 3.3.5: Create Control Measures using Criticality Editor 3.3.6: Response Paths Analysis 3.3.7: Generate a FMECA Report with Control Measures 3.3.8: Create Control Measures using Hazard Diagram 3.3.9: Hazard Path Analysis

Session 3.3: Control Measures

DISCUSSION 3.3.1 WHAT ARE CONTROL MEASURES?

Control Measures are concepts that reduce risk by affecting qualitative criticality parameters:

   Severity
   Controllability
   Probability
   Difficulty Of Detection

Control Measures act on

   Faults
   Failure Conditions
   Functional Flow Property Responses
   End Effects

Multiple Control Measure act together to form a Control Measure Set

Are represented by a Shield Icon

Session 3.3: Control Measures

DISCUSSION 3.3.2 CONTROL MEASURE TAXONOMY

Model Elements

Icon Name Use Case

  Control Measure Category    Contains set of control measures or other control measure categories

  Default Control Measure Type Control measure type pre-defined by PHMT upon project creation

  Custom Application Control  Control measure type defined by user and saved to the application
  Measure Type                instance. Indifferent to the open project. (Personal)

  Custom Project Control      Control measure type defined by user and saved to the project
  Measure Type                instance. Indifferent to the application instance being used. (Shared)

  Control Measure Instance    Control measure instantiated to the model. A control measure
                              instance will always reference one control measure type. Once in the
                              model, whether the control measure is default, custom application
                              or custom project the instance is treated and represented the same.

Session 3.3: Control Measures

DISCUSSION 3.3.2 CONTROL MEASURE TAXONOMY

Control Measure Categories

   Compensating Provisions
   Substantiation Actions
   Customer Requirements
   Detection Methods
   Prevention Control

Purpose:

   To guide engineer to effectively brainstorm mitigating actions
   To provide reference for management and grouping of control

      measure instances in the model

Session 3.3: Control Measures

DISCUSSION 3.3.2 CONTROL MEASURE TAXONOMY

USER ACTIONS:

           � Create new custom control measure type
           � Create new control measure category
           � Copy control measure type or category
           � Import control measure taxonomy from a JSON folder
           � Export a control measure taxonomy to a JSON folder
           � Save control measure to project
           � Delete a control measure taxonomy type or category

Session 3.3: Control Measures

EXERCISE 3.3.2 CONTROL MEASURE TAXONOMY

Create Custom Control Measure Categories

Select Preferences Customize Taxonomy from the main menu

Select Compensating Provision Folder

Add new control measure categories by clicking on

   If control measure type is selected button is greyed out

Field Custom Category 1 Custom Category 2

Name Redundancy Observation

Description Duplicated functionality to A method of determining compensate for failures system degradation state

Ensure "Create a root category?" is unchecked

   This ensure the folder is created without a parent category

Session 3.3: Control Measures

EXERCISE 3.3.2 CONTROL MEASURE TAXONOMY

Create new Control Measures

Select Redundancy Category and add new control measure by clicking on Add Warm Standby', Cold Standby', Parallel' control measures with the details in the table below Similarly add Inspection', `Continuous Monitoring' control measures to Observation Category

Name Description Examples Parent Folder

Warm Standby Standby unit operates at reduced rate until required Standby server Redundancy Cold Standby Standby unit does not operate until required Parallel Standby unit operates even when not required Emergency generator Redundancy Inspection A human inspection of the degradation state Backup server Redundancy

Continuous An automated inspection of the degradation state Scheduled Inspection, Observation Monitoring Anomaly Inspection Observation

                                                                Warnings, Fault Detection,
                                                                BIT

Session 3.3: Control Measures

EXERCISE 3.3.2 CONTROL MEASURE TAXONOMY

Save Control Measure Taxonomy to Project

Press save to save custom control measure taxonomy to current MADE project In the Save Taxonomy to Project' window, select all control measure items and click OK' Control measure items will change to red to indicate that they have been associated with the project (recommended)

Note: To edit project control measures, you must unsave them from the taxonomy using the button, so they are green, make the changes, and save them back to the project

Session 3.3: Control Measures

EXERCISE 3.3.3 CREATE CONTROL MEASURES USING FAILURE DIAGRAM

Right-click the `Control Unit' from the Project Explorer and select Failure Diagram Right-click Fault "Dielectric strength decreased" Control Measures Create a New Control Measure by clicking on

   Select Control Measure: Equipment Testing
   Edit Name: `Dielectric Strength Control Unit BIT'
   Edit Narrative: `Automated BIT for dielectric strength'

Click Add' to add the control measure Click OK'

Session 3.3: Control Measures

EXERCISE 3.3.3 CREATE CONTROL MEASURES USING FAILURE DIAGRAM

Add the following control measures

Failure Concept                 Type                   Name                    Narrative

 Dielectric Strength decreased  Equipment Testing      Dielectric Strength     Automated BIT for dielectric strength
                                                       Control Unit BIT

NDaiemlecetric Strength decreased Continuous Monitoring An automated inspection of the degradation state * DInetsecrmriipttteinotnOperation Abort Mission Continuous Monitoring*

 Process Continuous Amplitude   Warm Standby           Abort Mission*          Aborting or cancelling the mission in response to
                                                       Dual Signal Redundancy  the failure.*

                                                                               Control unit to transfer redundant signals for error
                                                                               checking

Note: Auto filled default values

Session 3.3: Control Measures

DISCUSSION 3.3.3 CREATE CONTROL MEASURES USING FAILURE DIAGRAM

Observe that the golden shield icon appears next to failure concepts with control measures Observe that control measures appear in the project explorer

Session 3.3: Control Measures

DISCUSSION 3.3.4 BARRIER MATRIX

Active criticality profile determines visible criticality parameters in the barrier matrix

Control measures can affect qualitative criticality parameters Colour changes with revised criticality number based on

selected profile Hover mouse over revised value for linguistic term

Session 3.3: Control Measures

EXERCISE 3.3.4 BARRIER MATRIX

Select Preferences Criticality profile Editor from the main menu

   Set PHMT RPN Criticality as Active Project Profile

Return to Failure Diagram of Control Unit

Right-click Dielectric strength decreased

Select Control Measures

Click Barrier Matrix

Make the following changes:

Criticality Parameter Control Unit BIT Continuous Monitoring

Severity N/A for Fault N/A for Fault Probability/Occurrence +2 -1 Difficulty Of Detection -4 -4

Session 3.3: Control Measures

EXERCISE 3.3.5 CREATE CONTROL MEASURES USING CRITICALITY EDITOR

Select Analysis Criticality & Reliability Editor from the main menu Locate the `Power Generation' subsystem in the Item / Failure Selection Expand the system tree until Mechanical � rotational Torque is visible then select this item Click Control Measure set icon in the top right-hand corner

Session 3.3: Control Measures

EXERCISE 3.3.5 CREATE CONTROL MEASURES USING CRITICALITY EDITOR

Create a new control measure by clicking on Select Control Measure: Compensating Provision Safety Devices Edit Name: Anti-Lock Braking System (ABS)' Edit Narrative: Reduces risk of skidding when driver loses control of the vehicle'

Select Barrier Matrix Select Convert Mechanical � rotational Torque High Reduce Severity by -5 Select Convert Mechanical � rotational Torque Low Reduce Severity by -4iption

Session 3.3: Control Measures

EXERCISE 3.3.6 RESPONSE PATHS ANALYSIS

Right-click the Power Generation' item in the Project Explorer Select End Effect Item from the menu Right-click the Control Unit' item in the Project Explorer Select Response Paths FCM from the menu Review effect of control measure on failure mode criticality

Session 3.3: Control Measures

EXERCISE 3.3.7 GENERATE A FMECA REPORT WITH CONTROL MEASURES

Select Reports Report Wizard from the main menu

Under Criticality select FMECA (RPN, PHMT)

Select to proceed to next page

Set the Level of Analysis to Component/Subsystem

Select the `Power Generation' item from the System Model list and select to set as end effect

Select the Control Unit' component from the Power Generation' Subsystem and select

   This will report on the `Control Unit' component

Select to generate the report

Session 3.3: Control Measures

EXERCISE 3.3.7 GENERATE A FMECA REPORT WITH CONTROL MEASURES

Session 3.3: Control Measures

DISCUSSION 3.3.7 GENERATE A FMECA REPORT WITH CONTROL MEASURES

Criticality Fault Failure Condition Local Effect End Effect Convert Torque Low Severity Dielectric Strength Intermittent Output Control Data Low (Power Generation) Occurrence (Control Unit) (Control Unit) (Control Unit) Detectability 2 Controls N/A 10 10 10 10 8 10 10 ABS

           1                      10                   10

           Electric Strength      Abort Mission        Dual Signal
                                                       Redundancy,
           Control Unit BIT,                           Safety Devices

           Continuous Monitoring

Session 3.3: Control Measures

EXERCISE 3.3.8 CREATE CONTROL MEASURES USING HAZARD DIAGRAM

Select Preferences Criticality profile Editor from the main menu Set PHMT Risk Assessment Method (RAC) as Active Project Profile

Right-click the `Control Unit' from the Project Explorer Select Go to Control Measures of the items in the table Add new Control Measures and configure the Barrier Matrix

Criticality Parameter Property Mismatch Major Loss of Operational Capability Control Measure Fail-safe Design Sensing Device - Probability/Occurrence -3 -4 N/A Severity N/A

Software Control +2

Session 3.3: Control Measures

EXERCISE 3.3.9 HAZARD PATH ANALYSIS

Right-click the `Power Generation' item in the Project Explorer Select Hazard Path Analysis from the menu Review effect of control measures on hazard paths criticality

Session 3.3: Control Measures

SESSION 3.3 SUMMARY

3.3.1: What Are Control Measures? 3.3.2: Control Measure Taxonomy 3.3.3: Create Control Measures using Failure Diagram 3.3.4: Barrier Matrix 3.3.5: Create Control Measures using Criticality Editor 3.3.6: Response Paths Analysis 3.3.7: Generate a FMECA Report with Control Measures 3.3.8: Create Control Measures using Hazard Diagram 3.3.9: Hazard Path Analysis

Source: Local MADE 3.9.1 installation: com.phm.made.help.plugin/documents/help/pdf/MADE Training Session 3.pdf · retrieved 2026-07-09