[:es]FMEA AIAG – VDA – PASO 6: OPTIMIZACION[:en]FMEA AIAG VDA SEP 2018 – STEP6: OPTIMIZATION[:]

Optimizacion for DFMEAs

Optimization for PFMEAs

Optimization for FMEA-MSRs

1. Dado que el FMEA-MSR se utiliza para evaluar los riesgos técnicos relacionados con la mejora continua del diseño, la optimización es más efectiva en el siguiente orden (esto se toma directamente del Manual AIAG-VDA FMEA de 2018 [borrador]):Diseñar modificaciones para reducir la ocurrencia de la causa de falla (FC).
   Aumenta la capacidad de detectar la causa de la falla o el modo de falla (FC o FM).
   En el caso de modificaciones de diseño, todos los elementos de diseño impactados se evalúan nuevamente

   .

Most actions will involve lowering the likelihood of occurrence of the failure cause (or failure mode) or improve detection controls that yields a more robust design, process or, for a MSR-FMEA, improves safety.

Assign Responsibilities

• Each action should be assigned a responsible individual and a realistic Target Completion Date.

Status of Action

• Suggested levels for reporting of status are: Open, Decision Pending, Implementation Pending, Completed and Discarded*.
• The FMEA study is not complete until all Action Priorities are considered and action has been taken to reduce risk and documented.
• *In some cases, the team may accept the current level of risk and determine that no further actions are necessary for a specific Failure Chain. In these cases, the status would be «Discarded» and «None» or «No Revisions Planned» should be noted in the remarks column.along with a briff description of the reasoning behind that decision.

Assessment of Effectiveness of Action

• After actions have been implemented, reassess the Occurrence and Detection ratings and determine the new Action Priority.  The new Action Priority rating is considered to be preliminary (i.e. Implementation Pending) until the effectiveness of the action taken has been tested.

Continuous Improvement

• Since the original FMEA conducted serves as an historical (baseline) record of the design or process, the original (S-O-D) ratings do not change.  The initial completed study and each subsequent study serves as evidence of the progression of improvements (i.e. reductions in risk) for the design or process.

Documentation

• The results of each FMEA study should be fully documented in a report that includes:
  • An Executive Summary
  • The Scope of the FMEA study
  • The S-O-D rating tables used
  • Both the original and resulting Action Priorities
  • Results, conclusions and recommendations

Optimization for DFMEAs

1. Design modifications in order to reduce the occurrence of the failure cause (FC).
2. Increase the ability to detect the failure cause or failure mode (FC or FM).
3. In the case of design modifications, all impacted design elements are evaluated again.
4. In the case of concept modifications, all steps of the FMEA are reviewed for the affected sections. This is necessary because the original analysis is no longer valid since it was based upon a different design concept.

Optimization for PFMEAs

1. Process modifications in order to reduce the likelihood of the occurrence of the failure cause (FC).
2. Increase the ability to detect the failure cause or failure mode (FC or FM).
3. In the case of process modifications, all impacted process steps are evaluated again.

Optimization for FMEA-MSRs

1. Design modifications in order to reduce the occurrence of the failure cause (FC).
2. Increase the ability to detect the failure cause or failure mode (FC or FM).
3. In the case of design modifications, all impacted design elements are evaluated again.