15+15 webinar: Responsible Tank Cleaning

  • 08 May 2024
  • 08 May 2024
  • Online
  • David Ditlev Almegaard
  • dda@bimco.org

The discussion questions the relevance of the wall wash inspection and recommends replacing the wall wash with washing water analysis as a safer, more environmentally aware method of determining cargo tank suitability prior to loading any cargo. There is still a reluctance within the wider chemical tanker industry to accept that there may be better alternatives to the wall wash, so in order to address this, Guy Johnson, Director of L&I Maritime Ltd., will explore just how little the wall wash inspection actually offers at the same time recognising the safety and environmental impacts of achieving a wall wash standard and how the washing water analysis actually contributes to safer working conditions and lower GHG emissions.

  • Does the wall wash inspection definitely tell commercial interests that a cargo can be loaded successfully or not?
  • Assuming a vessel is clean by hiding behind a wall wash result could be seen as bordering on stupidity.
  • The “dilution effect” is the reason why vessels load successfully, not the wall wash specification.
  • Washing Water Analysis significantly reduces confined space entry for the vessels’ crews and cargo surveyors.
  • Washing Water Analysis contributes to a 58% reduction in CO2 emissions during tank cleaning.

This 30-minute webinar begins at 12:00 UTC (See your time zone here)


15+15 weekly webinars are a 30-minute webinar which includes a 15-minute presentation followed by a 15-minute Q&A.


 Guy Johnson
  • Designated fellow of the Royal Society of Chemistry (FRSC), with chartered chemist (CChem) and chartered scientist (CSci) status.
  • In 1999 established L&I Maritime (UK) Ltd (100% owner). Providing consultancy services to all sectors of the chemical and product tanker sector, including but not limited to ship owners, charterers, oil majors, P&I Clubs, chemical suppliers and cargo tank coating manufacturers.
  • In 2021 established Spectrovise BV (50% owner). Web based platform using analytical data to create a constantly evolving and unique tank cleaning system, geared towards optimisation and reducing the environmental footprint of cargo tank cleaning.