il meaning in oil and gas
Definition
Integrity Level
il means Integrity Level. One of four bands of reliability (1-4) defined in IEC 61508 and IEC 61511 standards for reliability of safety instrumented functions (instrument protective functions). IL1 provides risk…
One of four bands of reliability (1-4) defined in IEC 61508 and IEC 61511 standards for reliability of safety instrumented functions (instrument protective functions). IL1 provides risk reduction between 10 and 100 (or probability of failure on demand 0.1 to 0.01 respectively), IL2 between 100 and 1000, etc.
✓ Verified term