Fitness for Service: Aging Management: Figure 1

(the first box is in the center of the figure and boxes 2,3,4, and 5 surround it, starting clock-wise from the top…)

1. Understanding aging of a structure/component

Key to effective aging management based on the following information:

  • Materials and material properties, fabrication methods
  • Stressors and operating conditions
  • Aging mechanisms
  • Sites of degradation
  • Consequence of aging degradation and failures
  • R&D results \
  • Operation experience
  • Inspection/monitoring/maintenance history
  • Mitigation methods
  • Current status, condition indicators
  • Reliability

(leads to second box "PLAN"…)

2. Development and optimization of activities for aging management of a structure/component

Preparing, coordinating, maintaining and improving activities for aging management

  • Document regulatory requirements and safety criteria
  • Document relevant activities
  • Describe coordination mechanisms
  • Improve effectiveness of aging management based on current understanding, self-assessment and peer reviews

(The second box can come back to the first box or go to arrow labeled "Minimize expected degradation" which leads to third box "DO"…)

3. Operation/use of a structure/component

Managing aging mechanisms

  • Operation according to procedures and technical specifications
  • Chemistry control
  • Environmental control
  • Operating history, including transient records

(The third can come back to the first box or go to arrow labeled "Check for degradation" which leads to fourth box "CHECK"…)

4. Inspection, monitoring and assessments of a structure/component

Detecting and assessing aging effects

  • testing and calibration
  • Pre-service and in-service inspection
  • Surveillance
  • Leak detection, vibration monitoring, etc.
  • Assessment of functional capability/fitness for service
  • Record keeping

(The fourth box can come back to the first box or go to arrow labeled "Mitigate degradation" which leads to fifth box "ACT"…)

5. Maintenance of a structure/ component

Managing aging effects

  • Preventive maintenance
  • Corrective maintenance
  • Spare parts management
  • Replacement
  • Maintenance history

(The fifth box can come back to the first box or go to arrow labeled "Improve effectiveness of aging management programs" which leads to second box "DO"…)

Return to Figure 1

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