As part of its Arctic pollution response program, the United States Coast Guard recently completed a two phase testing program of oil spill recovery devices operating in a broken ice field at below freezing temperatures. The Phase I program consisted of tests of Lockheed and Marco oil spill recovery devices to determine their performance when operating in an oil/ice/water environment. Tests were conducted in both salt and fresh water ice, with No.2 fuel oil and a crude oil similar to Prudhoe Bay crude oil, and in nominal oil thickness of 1/2 inch and 2 inches. These tests demonstrated that with minor hardware modifications and the proper operating procedures both devices can successfully recover oil spilled in a broken ice field of moderate ice piece size. The Phase II test program, was primarily directed towards the evaluation of modifications intended to improve the performance of the devices when operating in broken ice cover, and the determination of the variation in oil recovery performance with variation in forward speed and drum or belt rotational speed. Among additional secondary tests incorporated in the Phase II program were spreading tests to determine the natural equilibrium slick thickness of the oils tested, and brief oil recovery performance tests of the oil recovery devices at low temperatures in open water. Tests of the modified Lockheed and Marco devices demonstrated that the modifications did improve their performance when operating in broken ice cover. The spreading tests demonstrated that light oils will spread to a very thin layer, whether in open water or in broken ice cover. Heavy oils in broken ice cover will, however, achieve a natural equilibrium thickness many times greater than the open water thickness due to the partial containment of the oil by the broken ice pieces.

Media Info

  • Pagination: p. 901-916

Subject/Index Terms

Filing Info

  • Accession Number: 00138270
  • Record Type: Publication
  • Source Agency: Offshore Technology Conference
  • Report/Paper Numbers: V3, OTC 2695 Proceeding
  • Files: TRIS
  • Created Date: Sep 4 1976 12:00AM