Not Logged In, Login,

Wednesday, September 26, 2018


As in previous years, on 15 November 2001 INTERTANKO held a Seminar at the Baltic Exchange, London, for UK members/associate members and guests, which was attended by some 36 representatives.

The Seminar addressed such aspects as:

  • Corrosion Control for Cargo Tanks
  • The Physical Behaviour of Crude Oil Influencing its Carriage by Sea - CRUCOGSA database
  • Vapour Emissions Control - VOCON Operational Procedure for limiting the VOC releases from cargo tanks during transportation
  • Crude Oil Measurement Control - A critical review of the accuracy of the coefficients recorded in the Petroleum Measurement Tables for the quantification of cargo volumes over the normal transportation temperature range

The presentation was given by Dr. Timothy Gunner who as an INTERTANKO Consultant has coordinated research studies into these topics. The audience was actively involved and no doubt acquired new knowledge. The aim was to give advice to tanker operators on better operational procedures that would have an impact on the:

  • efficient carriage of oils and oil loss control
  • efficient operation to retain oil in its liquid phase

and to supply data for assistance in oil pollution control

The findings of these research studies have given rise to a recent amendment to the IMO COW Manual which would ensure a more efficient cleaning process in the sludge control operation. Another result was the INTERTANKO VOCON Operational Procedure (see Weekly News 44 of 2 November), which if applied by tankers would dramatically reduce the VOC emissions from cargo tanks of crude oils during transportation. If such parameters are beyond the ship's control, the multiphase model would at least give an indication of either the most appropriate crude oil washing parameters to efficiently clean the tanks or what type of operations the crew should undertake to avoid significant vapour emissions. The final aim of these studies is to develop a multiphase model that can predict the ideal parameters for the transportation of each cargo in order to ensure it is kept as a liquid for the entire duration of the transportation. Knowledge of physical and chemical properties of crude oil can provide the basis for further studies on efficient corrosion control in cargo tanks. The physical monitoring of corrosion in cargo tanks is very difficult because of the infrequent access to these tanks.

We believe the Seminar, like the previous ones, was a success and INTERTANKO will organise similar events at members' request.

Contact: Dragos Rauta