1 / 10

Maintenance and Reliability

Maintenance and Reliability. Ross L. Fink. Maintenance. All activities involved in keeping a system’s equipment in working order. Reliability. The probability that a machine part or product will function properly for a specified time under stated conditions.

guglielmo
Download Presentation

Maintenance and Reliability

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Maintenance and Reliability Ross L. Fink

  2. Maintenance • All activities involved in keeping a system’s equipment in working order

  3. Reliability • The probability that a machine part or product will function properly for a specified time under stated conditions

  4. System Reliability - Components in Series 100 80 60 40 20 0 n=1 n=10 Reliability of the System (Percent) n=50 n=100 n=300 n=400 n=200 100 99 98 97 96 Average Reliability of all Components (Percent)

  5. System Reliability • Rs=R1*R2*R3*…*Rn • Where, • Rs = System reliability • Ri= reliability of component i

  6. Reliability Tactics • improving individual components • providing redundancy

  7. Redundancy • The use of components in parallel to raise reliabilities • Example, what is the effective reliability of two components used in parallel with reliability of .90? • =.90 + (1-.90)*.90)=.99

  8. Mean Time Between Failures (MTBF) • FR(N) = number of failures during a period of time • MTBF=1/FR(N)

  9. Maintenance • Preventive Maintenance • A plan that involves routine inspections, servicing, and keeping facilities in good repair to prevent failure • Breakdown Maintenance • Remedial maintenance that occurs when equipment fails and must be repaired on an emergency or priority basis

  10. Total Productive Maintenance • TQM applied to Maintenance • Components • Predictive maintenance • Cleaning the machines • Creating standards on the equipment for cleaning, lubrication, and daily checks • Collecting data on downtime • Creating equipment improvement teams • Creating TPM area coordinators

More Related