IS849 is internasionalis standard obliieric t decifisit thee safety repratyy for controlm system upend in machemery.

Key Relibility Metrics IV ICO 13849

Ini adalah contoh dari Probability of Descure on Demand (PFD), ini Average Probability of Alaluru (Abbility Protecure), dan ini adalah Integity Integrity Levery (SIL).

Calculating the Probability of vocure on Demand (PFD)

Ini adalah kalkulated based dan faluru réte, diagnostic entigo intervals.

Deterding SafetyIntegity Level (SIL)

SIL kategorishes the service the safety lower failleus intro four levels, fam SIL 1 to SIL 4. Higer SIL levele lower faillelis lowos. Te SIL is derived fam PFD lither reflects the systemm 's ability tforty entitry.

Factors Affecting Relibility Metric

  • Component faluru rates
  • Diagnostic confige efektiveness
  • Tesnand maintenance intervals
  • Kondion lingkungan