Safety concept assistant
The authority wants a safety concept — and what goes in one? This assistant works through the questions with you, one at a time. A risk assessment is not a formality but your duty as the organiser — and the basis of any safety concept an authority will accept. The assistant walks you through it in seven steps: which hazards affect your event, how badly they weigh without measures, what you do about them, and what remains afterwards.
It is built on a catalogue of 71 typical hazards from LARP, theatre and event practice, each with orientation values and suggested measures. Scoring uses the 5×5 matrix that DGUV Information 215-310 sets out for events, with the Nohl matrix as a cross-check. Everything stays in your browser; you can save and pass on the assessment as a file.
The head count for it comes from the Capacity and escape route calculator, and the weather question every concept runs into is answered by the Weather and abort criteria card.
The catalogue is translated, but it was written against German regulations and quotes them by name (DGUV, VStättVO, IfSG). Those references are kept as they are, because that is what an authority here will ask about.
Step 1 of 7 — Event details
Saved automatically in this browser.
How this is calculated
Risk = probability × severity, each on a scale of 1 to 5, scored twice: once without measures (gross risk) and once with them (residual risk). DGUV 215-310 Kap. 1.3 explicitly recommends this two-pass approach; the goal is to bring the residual risk into the green band.
Classes: 1–4 low and acceptable, 5–12 medium and defensible only with documented measures, 13–25 high and not acceptable. Anything whose residual risk stays high may not go ahead as planned — that is the point at which part of the programme gets changed or dropped.
As a cross-check the assistant also computes the Nohl matrix (4×4, risk number = W + S − 1), which is widespread in German occupational safety. Where the two methods disagree on a hazard, it is worth a second look.
Measures are classified by the STOP principle: substitution before technical measures before organisational ones before personal protective equipment. That order is not advice but the statutory ranking in § 4 ArbSchG.
- DGUV Information 215-310 — safety at events and productions
- § 4 ArbSchG, DGUV Vorschrift 1 — the STOP principle
- Nohl matrix (DGUV/IFA) — comparison method
Every figure with its source and review date is in the metrics register — including when it was last checked against the regulation.
Common questions
It is the substantive core. A safety concept for an authority also contains site plans, escape routes, communication chains and the names of the people responsible. The risk assessment with its measures plan is the part that takes the most work and is missing most often — that is the part this covers.
In your browser and nowhere else. There is no server for anything to be sent to. So that nothing gets lost, export the assessment as a file — it then sits with you, and can be loaded back later or handed to a co-organiser.
No. Based on the event profile the assistant proposes the areas that actually apply to your event — a tavern night with no fire and no pyrotechnics has nothing to do with those areas. You can add hazards at any time; the preselection saves reading, it does not decide for you.
From practice, not from a standard: they are starting values without measures, estimated for a typical event of that kind. Your own assessment can and should differ — your site, your audience and your programme are the basis, not the catalogue.
Organiser briefing
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Related tools
- Medical services calculatorThe Maurer scheme and the Cologne algorithm side by side — helpers, vehicles, physicians, patrol districts.
- Weather and abort criteria cardA printable card of thresholds and measures — wind from your structure's rated wind, not from guesswork.
- Awareness concept builderBuilding blocks for an awareness concept — an information sheet for participants and a briefing for the crew.
- Capacity and escape route calculatorMaximum visitor numbers from floor area, escape routes and permit — the smallest of the three applies.
Orientation value. This calculator is no substitute for talking to the licensing authority, the building inspectorate, the fire service or a qualified planner. The German states each adapt the model regulation, so what binds your event is your state's version plus the conditions in your own permit.
Figures as of: 1.0 · last reviewed: 2026-09-18