Visitor Safety Briefing Calculator

1. Enter group size, duration, and site conditions.
2. Select the site phase and activity level for the visit window.
3. Tick hazards that visitors may be exposed to along the route.
4. Choose PPE and confirm emergency and first-aid information.
5. Click Calculate briefing to get a score and checklist.
6. Use Download CSV or Download PDF for records.

The calculator estimates a risk score (0–100) using weighted site factors, then maps it to a briefing level and recommended briefing time.

This is a planning aid. Always follow your site rules, method statements, permits, and supervision requirements.

Sample values shown for illustration only.

1) Why a structured visitor briefing matters

Visitors are often unfamiliar with site rules, changing work fronts, and temporary controls. A consistent briefing reduces confusion and helps escorts enforce boundaries. This calculator turns your visit details into a repeatable summary so different supervisors brief the same essentials every time.

2) What the calculator measures

The model combines BasePoints (activity level, site phase, and weather) with HazardPoints (your selected hazards). It then applies an exposure factor so larger groups and longer visits score higher. The final output is a 0–100 risk score mapped to four levels: Basic (0–25), Standard (26–50), Enhanced (51–75), and Critical (76–100).

3) Hazard selection drives the briefing checklist

Each hazard adds points and also generates practical controls. For example, selecting lifting operations adds targeted instructions such as staying clear of suspended loads and respecting lift plans. Selecting vehicle & plant traffic adds guidance on eye contact with operators and separation distances.

4) Group size and duration raise exposure

Exposure is calculated as 1 + 0.05×(Visitors−1) + 0.07×max(0, Hours−1). This means an extra visitor increases exposure by 5%, while each additional hour above the first adds 7%. Use this to justify smaller groups, shorter routes, or staged visits.

5) Readiness factors can reduce avoidable risk

Confirming induction and escorts reduces risk slightly, while missing emergency information increases it. If the muster point is not explained, a fixed increase is applied because incomplete emergency knowledge creates disproportionate consequences. Permit-to-work needs and interpreter requirements also add complexity.

6) Briefing time is a planning target

Recommended briefing time scales with risk using 8 + 0.35×RiskScore, bounded to 10–45 minutes. For example, a score of 60 suggests about 29 minutes. Use this as a minimum to cover PPE, route controls, emergency actions, and “stop and ask” expectations.

7) Escort coverage is shown as a simple ratio

The tool recommends escort needs based on risk: approximately 1:15 for lower scores, 1:8 for moderate scores, and 1:4 for high scores. If the available escort count is below the requirement, the results highlight a corrective action.

8) Record-keeping and continuous improvement

Use the CSV and PDF exports to keep consistent records across projects. Compare recurring hazards, briefing levels, and escort gaps over time. If “Critical” results appear often, review visit routes, segregation, and scheduling so visitors avoid peak risk activities whenever possible.

1) Does this replace a formal site induction?

No. It supports planning and consistency, but you must follow your site induction, method statements, permits, and supervisor instructions.

2) What should I do if the result is “Critical”?

Reduce group size, shorten the route, increase escorts, and avoid high-risk activities like lifts or hot works. Consider rescheduling the visit to a quieter window.

3) How do I choose hazards correctly?

Select hazards the visitor could realistically encounter on the planned route and time. If a hazard exists on site but is fully segregated from the route, don’t include it.

4) Why does duration change the score?

More time on site increases exposure to moving plant, changing conditions, and human error. The calculator adds exposure above the first hour to reflect this.

5) What PPE should I select?

Select PPE required by your site rules and the route hazards. If you are unsure, start with hard hat, high-visibility vest, and safety boots, then add task-specific items.

6) Can I brief visitors in another language?

Yes. Enter the briefing language and indicate if an interpreter is needed. Confirm understanding using simple questions and repeat emergency actions clearly.

7) How should I store the outputs?

Save the PDF for sign-in packs and the CSV for tracking trends across visits. Keep records with your visitor log and any permit-to-work documentation.

• Prefer smaller groups and controlled routes through active areas.
• Use exclusion zones around lifting, hot works, and live electrical work.
• Confirm emergency signals, muster point, and first-aid coverage every visit.
• Document briefing attendance and visitor acknowledgement for audits.