The U.S. Coast Guard (USCG) Chemical Transportation Advisory Committee (CTAC) meets in Jeffersonville

The U.S. Coast Guard (USCG) Chemical Transportation Advisory Committee (CTAC) held its most recent meeting this week in Jeffersonville, IN. Agenda items from the full CTAC meeting included a report from the CTAC Hazardous Cargo Transportation Security (HCTS) and the Outreach Subcommittee Work Groups. Included under the umbrella of the Outreach Sub-committee are the Vapour Control Work Group, the Barge Emissions and Placarding Work Group and the MARPOL Annex II Work Groups.


The INTERTANKO representative chairing the MARPOL Annex II Work Group apprised the Committee of the various meetings held since its inception in 2005 up to its final meeting on 22 August 2006 and presented the final report of the group. All of the hard work of the last nine months has culminated in a "draft guidance" that contains recommendations from CTAC regarding the development of the Navigation and Vessel Inspection Circular (NVIC) that will be used to implement MARPOL Annex II. To view a copy of the final MARPOL Annex II Work Group report click here.


The final recommendations contained in the draft guidance were submitted for approval to the full Committee and are now available on the USCG portal homeport ( To view the draft guidance click here.


It was also decided that this work group should remain intact for 2007 in order to address any MARPOL Annex II implementation issues that may arise.


The Hazardous Cargo Transportation (HCTS) Subcommittee


The Hazardous Cargo Transportation (HCTS) Sub-committee reported on the issues discussed at the Sub-committee meeting also held on 22 August 2006. The report to the CTAC included a detailed review of the current Certain Dangerous Cargo (CDC) requirements currently in place and recommendations made by the Sub-committee regarding CDCs. The CDC issue came to light during the Sub-committee’s review of the Federal Register notice regarding Advance Notice of Arrival (ANOA) Regulations and the problems encountered when vessels are considered to have CDC or CDC residue onboard. In the course of a number of meetings the group has been able to:


  • Examine and determine the practical issues related to the handling of residues, pumping materials, and realistically assessing the quantity of cargo left onboard after discharge.


  • Examine the hazards of CDC cargoes relative to properties such as vapour pressure, toxicity, and exposure guidelines. In doing so the group was able to determine that very few cargo residues pose a sufficient risk for the vessel to be considered as carrying a CDC.


  • Develop an acceptable definition of "residue".


It is the recommendation of the HCTS Sub-committee that the following cargoes remain CDCs at all times, even when only residue quantities remain onboard:

  • Anhydrous Ammonia
  • Chlorine
  • Ethane
  • Ethylene Oxide
  • Methane (LNG)
  • Methyl Bromide
  • Sulphur Dioxide
  • Vinyl Chloride


For all other cargoes the vessel would no longer be classified as a CDC vessel when only residue quantities remain onboard. All of these will require a change to regulations 33 CFR 160.24 and any other regulations affected by changes to the ANOA requirements. It is expected that these changes will be implemented via a Supplemental Rulemaking some time next year.


Other Outreach Subcommittee Work Groups


Progress reports were also given on the efforts of the Barge Emissions and Placarding and Vapour Control Work Groups. Both met on 23 August 2006. The Barge Emissions and Placarding Work Group has been working closely with industry and regulators to address barge emissions and proper placarding issues raised by the Louisiana Department of Environmental Quality (LDEQ). The work group is led by Amy Husted of Kirby Corporation.


The Vapour Control Work Group was revived in preparation for the vapour control regulations to examine the recommendations made by the CTAC at the inception of that regulatory project. An interim progress report was presented by CTAC member Ed Shearer of Shearer & Associates.


The next meeting of the USCG CTAC is tentatively scheduled for April/May 2007 possibly in the Boston area.


Contact: Margaret Doyle