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NAMOS Regulations

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In compliance with the Dangerous Substances (Notification and Marking of Sites) Regulations 1990 (NAMOS), any person in control of any site or premises where a total quantity of 25 tonnes or more of dangerous substances are used or stored, or are to become used or stored, must give written notification to both the Fire Service and the Health and Safety Executive. A dangerous substance is any substance which is dangerous for conveyance within the meaning of the Chemicals (Hazard Information and Packaging) Regulations 1993.

The Health and Safety Executive is the enforcing authority for notification of the storage of dangerous substances. Once notified, the Fire Authority is the enforcing authority for the marking of sites with warning signs. The Fire Authority is also responsible for giving directions as to the quantity, type and location of signs. You can read more about NAMOS site markings here.

To notify Hereford & Worcester Fire and Rescue Service about the storage or use of dangerous substances on your premises, please contact us using the address below and include the following details:

You will need to inform us of the following:

  • The name and address of the person making the notification
  • The full postal address of the site
  • A general description of the nature of the business carried on or intended to be carried on at the site
  • A list of the classifications of any dangerous substances which are, or are liable to be, present
  • The date on which it is anticipated that a total quantity of 25 tonnes or more of dangerous substances will be present, or if they are already present, a statement to that effect

On receipt of notification, a member of our staff will contact you in order to arrange an assessment of your site and signs. If you have previously notified us and there is subsequently a change in conditions or storage of dangerous substances ceases, you should contact us again.

Please send your notification to:

Operational Policy,

Southwell House,

Hindlip Park,


WR3 8SP.

Email: opsintel@hwfire.org.uk

Please note this process only informs HWFRS, you must also notify the Health and Safety Executive.

Useful links

HSE guidance on NAMOS compliance