Product · Process safety
HAZOP, LOPA and SIF registers in MSA
From HAZOP deviation to SIF and SIL target, in one register.
- Deviation → LOPA → SIF traced
- SIL targets per SIF
- Worksheets export to Word/Excel
How you do it in MSA
4 steps
- 1
Define HAZOP nodes
Split the process into nodes and record design intent.
- 2
Work the deviations
Record guide word, cause, consequence and existing safeguards.
- 3
Run LOPA
Credit independent protection layers against the tolerable frequency.
- 4
Build the SIF register
Each gap becomes a SIF with its SIL target, per IEC 61511.
MSA · Process safety · HAZOP / LOPA
Node 2 · Reactor feed
| Guide word | Cause | Consequence | Gap |
|---|---|---|---|
| More flow | FCV fails open | Overpressure | SIF-01 |
| No flow | Pump trip | Off-spec | — |
| More temp. | Cooling loss | Runaway | SIF-02 |
LOPA · SIF-01
IE 1×10⁻¹BPCS 0.1Alarm 0.1RRF 100 → SIL 2
Illustrative screen. Values are example data.
Related standards
See it on your own machine
Bring a recent project. We’ll walk through it in MSA.