Guidance

Critical uses of halons

Permitted uses of halons and deadlines for decommissioning equipment.

You must:

  • use halons only for the listed critical uses
  • decommission the product or equipment by the deadline

On aircraft

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect normally unoccupied cargo compartments Fixed system 1301 1211 2402 2040
To protect cabins and crew compartments Portable extinguisher 1211 2401 2025
To protect engine nacelles and auxiliary power units Fixed system 1301 1211 2402 2040
For the inerting of fuel tanks Fixed system 1301 2402 2040
To protect lavatory waste receptacles Fixed system 1301 1211 2402 2020
To protect dry bays Fixed system 1301 1211 2402 2040

On military ground vehicles

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect engine compartments Fixed system 1301 1211 2402 2035
To protect crew compartments Fixed system 1301 2402 2040
To protect crew compartments Portable extinguisher 1301 1211 2020

On military surface ships

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect normally occupied machinery spaces Fixed system 1301 2402 2040
To protect normally unoccupied engine spaces Fixed system 1301 1211 2402 2035
To protect normally unoccupied electrical compartments Fixed system 1301 1211 2030
To protect command centres Fixed system 1301 2030
To protect fuel pump rooms Fixed system 1301 2030
To protect flammable liquid storage compartments Fixed system 1301 1211 2402 2030

On military submarines

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect machinery spaces Fixed system 1301 2040
To protect command centres Fixed system 1301 2040
To protect diesel generator spaces Fixed system 1301 2040
To protect electrical compartments Fixed system 1301 1211 2402 2040

In oil, gas and petrochemicals facilities

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect spaces where flammable liquid or gas could be released Fixed system 1301 2402 2020

In land-based command and communications facilities essential to national security

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect normally occupied spaces Fixed system 1301 2402 2025
To protect normally unoccupied spaces Fixed system 1301 2402 2020

In nuclear power and nuclear research facilities

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect spaces where necessary to minimise risk of dispersion of radioactive matter Fixed system 1301 2020

In the Channel Tunnel

Critical use Type of extinguisher Type of halon Decommissioning deadline
To protect power cars and shuttle wagons of Channel Tunnel trains Fixed system 1301 2020
Published 7 February 2019