Header row
Formatted, frozen, with set column widths so the sheet scrolls cleanly on long registers.
SIL calculation Excel template.
A SIL verification calculation register is the IEC 61511 functional safety document that compares the target SIL for each safety instrumented function, SIF against the achieved SIL of the as-designed sensor, logic solver, and final element architecture. One row per SIF tag carries the hazardous event, demand mode, target SIL, achieved SIL, average probability of failure on demand, PFDavg, risk reduction factor, RRF, voting architecture, 1oo1, 1oo2, 2oo2, 2oo3, and proof-test interval.
What the template carries.
SIL verification calculation template with 14 columns covering SIF tag, hazardous event, demand mode, target SIL, achieved SIL, PFDavg, RRF, voting architecture, sensor, logic-solver, final-element references, MTTR, proof-test interval, proof-test coverage, and common-cause beta factor. Pre-formatted with frozen header, auto-filter, and 48 blank rows.
By Tagsight Team·Published Aug 7, 2025·Reviewed Jun 4, 2026
- Format.xlsx
- Columns14
- Rows48 blank
- Opens inExcel · Sheets · LibreOffice
Every column, defined.
14 columns mapped to how a sil verification calculation is issued on a real project. Dropdown columns enforce values; free-text columns let house notation preserve as drawn.
| # | Column | Type | Description |
|---|---|---|---|
| 01 | SIF Tag | Text | Safety instrumented function identifier |
| 02 | Hazardous Event | Text | Hazard the SIF protects against |
| 03 | Demand Mode | List | Low demand, High demand, Continuous |
| 04 | Target SIL | List | SIL 1, SIL 2, SIL 3, SIL 4 |
| 05 | Achieved SIL | List | SIL 1, SIL 2, SIL 3, SIL 4 |
| 06 | PFDavg | Text | Average probability of failure on demand |
| 07 | RRF | Text | Risk reduction factor, the inverse of PFDavg. |
| 08 | Voting Architecture | List | 1oo1, 1oo2, 2oo2, 2oo3 |
| 09 | Sensor Elements | Text | Sensor tag references |
| 10 | Logic Solver | Text | Logic solver tag reference |
| 11 | Final Elements | Text | Final element tag references |
| 12 | MTTR | Text | Mean time to restore, hours. |
| 13 | Proof Test Interval | Text | Months between proof tests |
| 14 | Common-Cause β | Text | Common-cause beta factor fraction |
What ships in the file.
Worked example
One filled row shows the format for every column so the schema is clear before the engineer starts typing.
Auto-filter
Enabled on every column. Pivot by any field without a single formula.
48 blank rows
Pre-formatted and ready to paste into. Extends without breaking the dropdown or filter range.
Enforced dropdowns
Categorical columns (priority, signal class, status, type) enforce values so the register stays clean.
Cross-tool
Plain .xlsx. Opens cleanly in Excel, Google Sheets, and LibreOffice. No macros, no add-ins.
No tracking
No macros, no add-ins, no telemetry inside the file. Edit and ship.
Quiet signoff
A single mint-italic line at the bottom: Drag a source document at tagsight.io to fill this automatically. Easy to delete.
Extract from a source document instead.
Upload the source document instead and the same 14-column schema this template defines comes back populated. Type, tag, vendor, model, and per-row metadata come from the document itself.
Scanned binders, CAD-exported PDFs, and image scans all work. House conventions, vendor-specific forms, and dialect-specific tag schemes read as drawn.
Common questions
What is a SIL verification calculation.
The SIL verification calculation is the per-SIF computation that compares the target SIL, from the SIL determination to the achieved SIL, from the actual sensor, logic-solver, final-element architecture. PFDavg is the per-SIF result. The RRF is its reciprocal. The calculation is the document the IEC 61511 audit reads to verify the protective scope meets the target risk reduction.
What columns are in this template.
Fourteen columns. Demand Mode, Target SIL, Achieved SIL, and Voting Architecture are dropdowns. Everything else stays free text so PFDavg, RRF, MTTR, proof-test interval, and common-cause beta factor preserve the source notation from your calculation tool, exida exSILentia, SIS-PRO, Sphera SafeTech.
Does this template do the SIL calculation.
No. The template is a register of as-issued SIF results. The PFDavg calculation itself, component reliability data, beta-factor modelling, proof-test coverage is done in your validated SIL calculation tool. The template carries the result row per SIF for the IEC 61511 evidence package.
Related.
Run it on your drawings.
The template is a manual starting point you fill yourself. Upload the source document instead and the same schema comes back populated.