This guidance has been developed by industry, following the withdrawal of HSE’s publication PM81, to give clear current cross-sector guidance on the safe management of ammonia refrigeration systems.  This guidance may go further than the minimum needed to comply with the law.

The guidance was written by the Food Storage and Distribution Federation’s Technical and Safety Committee, British Engineering Services, Institute of Refrigeration and other stakeholders, with support from the Health and Safety Executive.

This guidance should be read in conjunction with:

  • Safety of pressure systems, the Approved Code of Practice and guidance for the Pressure Systems Regulations 2000 (PSSR).
  • Dangerous substances and explosive atmospheres, the Approved Code of Practice and guidance for the Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR).
  • The HSE webpages on pressure systems, fire and explosion and DSEAR.

The guidance is also supported by the Air Conditioning and Refrigeration Industry Board (ACRIB) whose members are:

Full Members

  • Federation of Environmental Trade Associations.
  • Refrigeration, Air Conditioning and Heat Pump Group of Building & Engineering Services Association.
  • Institute of Refrigeration.

Associate Members

  • Associated Air Conditioning and Refrigeration Contractors.
  • British Frozen Food Federation.
  • Cambridge Refrigeration Technology.
  • Chartered Institution of Building Services Engineers.
  • Food Storage and Distribution Federation.

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