SIL study is one of the safety studies which is carried out to prevent hazard in process industries. Generally, SIL study is carried out after the HAZOP study is completed for a project. HAZOP study makes the process as a whole robust or reliable by adding redundant instruments, additional alarms etc. HAZOP study ensures the process to be safe or reliable, similarly SIL study ensures that each component of the loop to be robust and reliable. SIL study is generally classified under three stages.
- SIL Identification
- SIL Verification
- SIL Validation