RELIABILITY

RELIABILITY

1. Probability that the compressor performs its function without failure for a specific time under stated conditions.

   • FAILURE
     • Occurs when required pressure or airflow is not maintained. Examples: overheating, leaks, bearing damage.
   • FAILURE RATE (λ)
     • Number of failures per operating hour. Higher failure rate
       • AVAILABILITY
         • Availability = MTBF / (MTBF + MTTR) Higher MTBF and lower MTTR → increase → Availability
           • LOAD / USAGE
             • High load and 24/7 operation → increase → Stress and wear More usage → reduces → MTBF
   • MTBF / MTTF
     • MTBF → average time between failures (repairable system). MTTF → average time to failure (non-repairable component). Higher MTBF → higher → Reliability
   • MAINTAINABILITY
     • Ability to repair the compressor quickly. Good maintainability → reduces → MTTR
   • EQUIPMENT AGE
     • New → early failures possible Mid-life → constant failure rate Aging → wear-out increases failure rate Aging → increases → Failure rate
       • VISIBLE CONDITION
         • Leaks, corrosion, noise, overheating Poor condition → increases → Failure risk
           • INSPECTIONS / DIAGNOSTICS
             • Vibration analysis, temperature checks, pressure monitoring Early detection → enables → Preventive maintenance Preventive maintenance → increases → Reliability
   • ENVIRONMENTAL CONDITIONS
     • High temperature → overheating Humidity → corrosion Dust → internal wear Vibration → bearing damage Harsh environment → increases → Failure rate

2. System: Industrial Air Compressor Function: Supplies compressed air to operate industrial equipment.