This is a useful document (INDG 158) by the UK Health and Safety Executive.
This document is aimed at employers and the self-employed who carry out work in confined spaces, and forms part of HSE’s commitment to make simple and practical guidance available for small firms. It will help them take the necessary action to meet the requirements of the Confined Spaces Regulations 1997. It will also be a useful source of information to anyone involved in carrying out work in confined spaces.
Click here > Safe work in confined spaces
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