The HSE publication, Safe work in confined spaces: Confined Spaces Regulations 1997, Approved Code of Practice, Regulations and guidance (L101), explains the definition of a confined space in the Confined Spaces Regulations 1997 and gives examples. It aims to help those involved in work within confined spaces, those who employ or train such people and those that represent them, to assess the risk of working within a particular confined space and put precautions in place for work to be carried out safely.