This latest version of EH40, published in August 2018 has been updated to include new and revised workplace exposure limits (WELs) introduced by the 4th Indicative Occupational Exposure Limit Values (IOELV) Directive. The changes are laid out at the front of the document and include:
- 14 new substance entries;
- new skin notations for four substances including 1,4 – dichlorobenzene;
- reductions to the existing WELs for 11 substances including carbon monoxide, carbon tetrachloride, dichloromethane and tetrachloroethylene; and
- the introduction of short term exposure limits for 18 substances.
There are transitional arrangements until 21 August 2023 for the underground mining and tunnelling industries for nitrogen monoxide, nitrogen dioxide and carbon monoxide in recognition of the technological challenges and associated costs for complying with these now reduced WELs.
The new 2018 edition of EH40/2005 can be down loaded at http://www.hse.gov.uk/pubns/books/eh40.htm.