Event archive

Event Organiser: The British Tunnelling Society

Low intermediate and high pressure compressed air work, London

  • Lecture
  • London
  • 21 October 2021
  • 18:00 - 19:30
Low intermediate and high pressure compressed air work, London

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A revision of the BTS “Guide to the Work in Compressed Air Regulations” has been released; now called “Guidance on good practice for Work in Compressed Air”.

The Guide represents a revision and update of the 2012 edition and has been extended to provide guidance on integrating high pressure compressed air work into the UK regulatory framework. It complements BS 6164 and ITA/BTS CAWG Report 10, 2nd rev, but is readily applicable to work in compressed air anywhere. It also contains interim technical guidance on airlock safety, until the current revision of EN 12110 is harmonised.  

This lecture will explore the phenomenon of saturation and specifically address some of the important differences between saturation exposure techniques as used in tunnelling compared with saturation exposure techniques in diving. It will also seek to explain the BTS CAWG opinion that ~3.5 bar(g) is an appropriate pressure at which to move to mixed gas breathing during construction, which exploit the differing hydro-geological characteristics of the Lower Aquifer strata, often involving a combination of partial cut-offs and pumping using both surface dewatering systems and in shaft/tunnel techniques.

Note 1 : This in-person lecture will also be streamed live at https://youtu.be/THILlxErIFo
Note 2 : Post-lecture drinks will be held at Westminster Arms, instead of the ICE Bar 


Dr Donald Lamont MBE

Roy Slocombe

Event venue

Institution of Civil Engineers
One Great George Street
London SW1P 3AA
United Kingdom

For more information please contact:

Elira Alushi

e: [email protected]