Designers of the new generation of offshore platforms are increasingly aware of the need to design for noise control right back on the drawing board. Retrospective noise control has proved to be a cause of lengthy delays and expensive troubleshooting exercises. This new generation of structures has still to enter service, so operational measurements of noise have not yet been possible. However, comprehensive measurements have been made on existing drilling/exploration rigs, and show clearly the problems which can occur when noise control is not considered at design stage. Measurements on a typical rig of this type showed that the areas of greatest noise are the drilling platform, the engine room, the mud and cement pump areas, and the accommodation area. These data are shown in a table. The following maximum permissible noise levels are proposed for the basic areas aboard offshore platforms: 1. Work areas: Maximum noise level 90dBA (NR 80 to NR 85) for an 8-hour shift, and pro-rata on an energy basis for any other shift length, (eg 88dBA for a 12-hour shift). 2. Control rooms: Maximum noise level 60dBA (NR 50 to NR 55) for effective speed communication. 3. Accommodation areas: Maximum noise level 45dBA (NR 35 to NR 40) for effective sleep. The general theoretical concepts relating to noise generation and abatement are considered.

  • Corporate Authors:

    Trade and Technical Press, Limited

    Crown House
    Morden, Surrey SM4 5EW,   England 
  • Authors:
    • Melling, T H
  • Publication Date: 1975-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00135380
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Jul 13 1976 12:00AM