ALTERNATIVES TO CONVENTIONAL METHODS OF SURFACE PREPARATION FOR SHIP REPAIRS

For the past 3 decades, open abrasive blasting has been widely used all over the world for surface preparation of ships undergoing maintenance or repairs. During the 1980s, as environmental awareness became more of an issue, legislation in some countries forced the introduction of alternative approaches to surface preparation in shipyards, mainly because of the amount of dust generated by dry abrasive blasting. Because used abrasive could be considered toxic waste in some cases, disposal costs increased considerably. This article examines the characteristics, advantages, and disadvantages of three such alternative methods of surface preparation: ultra-high pressure (UHP) waterjetting, dust-free wheel blasting, and wet blasting. It also presents a synopsis of the areas of a ship most likely to undergo repair work and recommends one or more methods of surface preparation in each case. Areas discussed include external surface preparation of hulls, decks, and accommodation areas, and internal surface preparation of cargo/ballast tanks and holds. A sidebar compares open blasting with UHP waterjetting.

  • Availability:
  • Corporate Authors:

    Technology Publishing Company

    2100 Wharton Street, Suite 310
    Pittsburgh, PA  United States  15203
  • Authors:
    • Carlos da Maia, M L
  • Publication Date: 2000-5

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00793970
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 10 2000 12:00AM