STRIPPING OF CARGO PIPING IN CHEMICAL TANKER BY LINE BLOWING

An investigation is reported of the line blowing that is commonly used in chemical tankers after unloading for the purpose of reducing the quantity of residue in the piping arrangement. Experiments are performed with laboratory test facilities, using air and water as the working fluid. In accordance with P&A Standards of Annex II to MARPOL 73/78, the test arrangement was set up to maintain a back pressure with the 10m-long vertical riser pipe or the constant pressure valve set at 1 bar minimum at the end of the horizontal or inclined pipe. The results of observations of air and water flow and the measurements of the quantity of remaining water in the horizontal or inclined pipe are described. The effects of air capacities, pipe diameters, inclination angles and method of maintaining back pressure, etc., on the line blowing process are investigated. Visualization studies of the line blowing have led to a better understanding of the processes of water discharge from cargo pipelines.

• Supplemental Notes:
  • Conference paper
• Authors:
  • Yamaguchi, K
  • Yamane, K
  • Aya, I
• Conference:
  • International Symposium on the Transport of Dangerous Goods by Sea and Inland Waterways, 10th
  • Location: Hamburg, Federal Republic of Germany
  • Date: 1989-9-25 to 1989-9-27
• Publication Date: 0

Media Info

• Features: References;
• Pagination: 10p.

Subject/Index Terms

• TRT Terms: Chemical tankers; Stripping (Pavements)
• Old TRIS Terms: Cargo pipes
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00660743
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM