VENTILATION AND DEHUMIDIFICATION OF SHIP BALLAST TANKS FOR BLASTING AND COATING WORK

Ship ballast tanks present very corrosive exposures. Because a ballast tank is a confined space, it must be thoroughly ventilated for blast cleaning, coating application, and curing of the coating. In addition, because of the wet environment, the dew points are relatively high, especially if the ship is in the water. As a result, it is often necessary or advisable to also dehumidify the tank for blasting and coating operations. The design of a ventilation and dehumidification system can be a very involved process, requiring sophisticated engineering. Many variables must be accounted for: the condition of the surface, ambient temperature and humidity, equipment available, the size and configuration of the tank, access to the tank from the ship, and facilities, equipment, and general layout of the shipyard. This article describes the basic parameters and equipment for ventilating and dehumidifying tanks that are to be cleaned and coated. Sample calculations are provided.

  • Availability:
  • Corporate Authors:

    Technology Publishing Company

    2100 Wharton Street, Suite 310
    Pittsburgh, PA  United States  15203
  • Authors:
    • Appleman, B R
  • Publication Date: 2000-4

Language

  • English

Media Info

  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: p. 43-52
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00792404
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 22 2000 12:00AM