"Every employer shall establish and where necessary give effect to appropriate procedures to be followed in the event of serious and imminent danger to persons at work in his undertaking"

"any persons at work who are exposed to serious and imminent danger to be informed of the nature of the hazard and of the steps taken or to be taken to protect them from it"

Further information available from www.hmso.gov.uk.

Health and Safety (Safety Signs and Signals) Regulations 1996 (GB)

Relevant extracts

"Permanent signboards must be used for signs relating to prohibitions, warnings and mandatory requirements and the location and identification of emergency escape routes and first aid facilities"

"Signboards and/or a safety colour must be used to mark permanently the location and identification of fire-fighting equipment"

"The instructions in the table below apply to all signs incorporating a safety colour."

Colour	Meaning or Purpose	Instructions and Information
Red	Prohibition sign Danger alarm Fire-fighting equipment	- Dangerous behaviour - Stop, shutdown, emergency cut out devices - Evacuate - Identification
Yellow or Amber	Warning sign	- Be careful, take precautions - Examine
Blue	Mandatory sign	- Specific behaviour or action - Wear personal protective equipment
Green	Emergency escape, first aid sign No Danger	- Doors, exits, routes, equipment, facilities - Return to normal

This is soon to be replaced by the Fire Precaution Regulatory

Reform Order 2004.

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