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On Safe Lines, Free Advice on the RIDDOR 1995 Regulations. Risk and Risk Management to Help You Manage Your Health and Safety Responsibilities.
TABLE C - REPORTABLE DANGEROUS OCCURRENCES
Listed below are the categories of Dangerous Occurrences that must be reported to the Health and Safety Executive
1. Lifting Machinery etc
The collapse of, the overturning of, or the failure of any load-bearing part of any -
a. lift or hoist;
b. crane or derrick;
c. mobile powered access platform;
d. access cradle or window-cleaning cradle;
f. pile-driving frame or rig having an overall height, when operating, of more than 7 metres; or fork lift truck.
2. Pressure Systems
The failure of any closed vessel (including a boiler tube) or of any associated pipework, in which the internal pressure was above or below atmospheric pressure, where the failure has the potential to cause the death of any person.
3. Overhead Electric Lines
Any unintentional incident in which plant or equipment either -
a. comes into contact with an un-insulated overhead electorate line in which the voltage exceeds 200 volts; or
b. causes an electrical discharge from such an electric line by coming into close proximity to it.
4. Electrical Short Circuit
Electrical short circuit or overload attended by fire or explosion which results in the stoppage of the plant involved for more than 24 hours or which has the potential to cause the death of any person.
5. Biological Agents
Any accident or incident which resulted or could have resulted in the release or escape of a biological agent likely to cause severe human infection or illness.
6. Breathing Apparatus
1. Any incident in which breathing apparatus malfunctions -
a - while in use, or
b - during testing immediately prior to use in such a way that had the malfunction occurred while the apparatus was in use it would have posed a danger to the health or safety of the user.
2. This paragraph shall not apply to breathing apparatus while it is being
a - used in a mine; or
b - maintained or tested as part of a routine maintenance procedure.
7. Collapse of Scaffolding
The complete or partial collapse of -
1 any scaffold which is -
a - more than 5 metres in height which results in a substantial part of the scaffold falling or overturning; or
b - erected over or adjacent to water in circumstances such that there would be a risk of drowning to a person falling from the scaffold into the water; or
2 the suspension arrangements (including any outrigger) of any slung or suspended scaffold which causes a working platform or cradle to fall.
8. Pipelines or Pipeline Works
The following incidents in respect of a pipeline or pipeline works -
a. the uncontrolled or accidental escape of anything from, or in rush of anything into, a pipeline which has the potential to cause the death of, major injury or damage to the health of any person or which results in the pipeline being shut down for more than 24 hours;
b. the unintentional ignition of anything in a pipeline which has the potential to cause the death of, major injury or damage to the health of any person or which results in the pipeline being shut down for more than 24 hours;
c. any substantial and unintentional change in the position of a pipeline requiring immediate attention to safeguard the integrity or safety of a pipeline;
d. any unintentional change in the subsoil or seabed in the vicinity of a pipeline which has the potential to affect the integrity or safety of a pipeline;
e. any failure of any pipeline isolation device, equipment or system which has the potential to cause the death of, major injury or damage to the health of any person or which results in the pipeline being shut down for more than 24 hours; or
f. any failure of equipment involved with pipeline works which has the potential to cause the death of, major injury to damage to the health of any person.
9. Dangerous Occurrences which are Reportable except in Relation to Offshore Workplaces
Collapse of Building or Structure
Any unintended collapse or partial collapse of -
a. any building or structure (whether above or below ground) under construction, reconstruction, alteration or demolition which involves a fall of more than 5 tonnes of material;
b. any floor or wall of any building (whether above or below ground) used as a place of work; or
c. any false-work.
10. Explosion or Fire
An explosion or fire occurring in any plant or premises which results in the stoppage of that plant or as the case may be the suspension of normal work in those premises for more than 24 hours, where the explosion or fire was due to the ignition of any material.
11. Escape of Flammable Substances
1 The sudden, uncontrolled release -
(a) inside a building -
(i) of 100 kilograms or more of a flammable liquid,
(ii) of 10 kilograms or more of a flammable liquid at a temperature above its normal boiling point, or
(iii) of 10 kilograms or more of a flammable gas; or
(b) in the open air, of 500 kilograms or more of any of the substances referred to in sub-paragraph (a) above.
2. In this paragraph, "flammable liquid" and "flammable gas" mean respectively a liquid and a gas so classified in accordance with regulation 5(2), (3) or (5) of the Chemicals (Hazard Information and Packaging for Supply) Regulations 1994.
12. Escape of Substances
The accidental release or escape of any substance in a quantity sufficient to cause the death, major injury or any other damage to the health of any person.
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