Cymraeg This scoring system provides a clear, consistent method for evaluating risks across all Plas Heli safety documents, including Fire Risk Assessments, Event Risk Assessments, Temporary Structure Assessments, and operational plans. It is designed to be simple, visual, and easy for volunteers, Duty Managers, and event organisers to apply.
1. Purpose of the Scoring System
The RAG (Red–Amber–Green) system helps identify:
- Which hazards require immediate action
- Which hazards require monitoring
- Which hazards are already controlled
This system supports compliance with the Regulatory Reform (Fire Safety) Order 2005 and general risk‑assessment best practice.
2. RAG Rating Overview
| Rating | Meaning | Required Action |
|---|---|---|
| RED – High Risk | Immediate danger or significant likelihood of harm. | Stop activity, implement controls immediately, notify Duty Manager. |
| AMBER – Medium Risk | Hazard present but controlled; requires monitoring. | Review controls, monitor during event, brief volunteers. |
| GREEN – Low Risk | Hazard well controlled with minimal likelihood of harm. | No immediate action required; maintain existing controls. |
3. Likelihood and Severity Matrix
The RAG rating is determined by combining the Likelihood of an incident with the Severity of its consequences.
Likelihood
| Level | Description |
|---|---|
| 1 – Unlikely | Rare occurrence; controls strong. |
| 2 – Possible | Could occur; controls adequate but require monitoring. |
| 3 – Likely | Expected to occur without additional controls. |
Severity
| Level | Description |
|---|---|
| 1 – Minor | Minor injury or disruption. |
| 2 – Moderate | Injury requiring treatment; moderate disruption. |
| 3 – Major | Serious injury, fire spread, or major operational impact. |
4. Combined Matrix (3×3)
| Severity ↓ / Likelihood → | 1 – Unlikely | 2 – Possible | 3 – Likely |
|---|---|---|---|
| 1 – Minor | GREEN | AMBER | RED |
| 2 – Moderate | AMBER | RED | RED |
| 3 – Major | RED | RED | RED |
5. Examples Relevant to Plas Heli
- Blocked Pontoon Gate (Evacuation Point): Likely + Major = RED
- Shared Public Path Crowding: Possible + Moderate = AMBER
- Fuel Stored Correctly in Designated Area: Unlikely + Moderate = GREEN
- Balcony Overcrowding During Launch: Possible + Major = RED
- Safety Boat Harbour Transit (4‑knot rule applied): Unlikely + Moderate = GREEN
6. How Duty Managers Should Use This System
- Apply the matrix when reviewing hazards before each event.
- Prioritise RED hazards for immediate action.
- Monitor AMBER hazards during the event.
- Maintain controls for GREEN hazards.
- Record any changes in the Event Safety Log.
7. Document Control
Version: 1.0
Published: 23 September 2026
Last Updated: 23 September 2026
Document Owner: Plas Heli Cyf
