RIDDOR - Appendix 2
Summary of Reportable Dangerous Occurrences
The following Dangerous Occurrences must be reported to the Local Authority or HSE as soon as possible by the quickest practicable means -
- Collapse, overturning or failure of load-bearing parts of lifts and lifting equipment;
- Explosion, collapse or bursting of any closed vessel or associated pipework;
- Failure of any freight container in any of its load-bearing parts;
- Plant or equipment coming into contact with overhead power lines;
- Electrical short circuit or overload causing fire or explosion;
- Any unintentional explosion, misfire, failure of demolition to cause the intended collapse, projection of material beyond a site boundary, injury caused by an explosion;
- Accidental release of a biological agent likely to cause severe human illness;
- Failure of industrial radiography or irradiation equipment to de-energise or return to its safe position after the intended exposure period;
- Malfunction of breathing apparatus while in use or during testing immediately before use;
- Failure or endangering of diving equipment, the trapping of a diver, an explosion near a diver, or an uncontrolled ascent;
- Collapse or partial collapse of a scaffold over five metres high, or erected near water where there could be a risk of drowning after a fall;
- Unintended collision of a train with any vehicle;
- Dangerous occurrence at a well (other than a water well);
- Dangerous occurrence at a pipeline;
- Failure of any load-bearing fairground equipment, or derailment or unintended collision of cars or trains;
- A road tanker carrying a dangerous substance overturns, suffers serious damage, catches fire or the substance is released;
- A dangerous substance being conveyed by road is involved in a fire or released;
- Unintended collapse of any building or structure under construction, alteration or demolition where over five tonnes of material falls; a wall or floor in a place of work; any false-work;
- Explosion or fire causing suspension of normal work for over 24 hours;
- Sudden, uncontrolled release in a building of: 100 kg or more of flammable liquid; 10 kg of flammable liquid above its boiling point; 10 kg or more of flammable gas; or of 500 kg of these substances if the release is in the open air;
- Accidental release of any substance which may damage health.
A RIDDOR report form should be sent to the HSE within ten days of the incident.
