The use of instrument air on ships followed the introduction of the UMS notation for ocean-going vessels. Originally, it was mainly adopted in specialized types such as VLCC and LNG tankers, container ships, and ro-ro-ferries; but it is now being more generally used. The Author, of CompAir Industrial Ltd, describes a system which provides compressed air at 8-11 bar having the properties needed for instrument air. It uses a 100% oil-free compressor with aftercooler, bringing the temperature after compression down to 25-30 degrees C; a mechanical separator to remove most of the moisture from the compressed air; a heatless or heated-type dryer with automatic change-over operation to achieve a dew point at the working pressure of minus 20 to minus 40 degrees C; and a microfilter to remove solid particles of a size greater than about 5 microns.

  • Availability:
  • Corporate Authors:

    Institute of Marine Engineers

    Memorial Building, 76 Mark Lane
    London EC3R 7JN,   England 
  • Authors:
    • DeWulff, R
  • Publication Date: 1976-10

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00157845
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Aug 15 1977 12:00AM