DEVELOPMENTS IN THE SANITARY SYSTEMS

As a result of anti-pollution regulations and other factors, a vacuum system for dealing with sewage is now normally installed in passenger ships and ferries. The system, which has several advantages, may be of the type which incorporates a vacuum holding-tank kept at an under-pressure by vacuum pumps, but this older type has been largely replaced by the type in which the tank is under atmospheric pressure and the vacuum is created in the piping system by a water jet ejector. A sewage treatment plant is also commonly installed. A separate holding tank is often preferred in order to facilitate maintenance. The article briefly discusses these systems and the associated pumping, piping and other arrangements, and includes several recommendations on such matters as the advisability of making the holding tank of a corrosion-resistant material that does not need coating <and possible subsequent recoating>, the division of the sanitary system into sub-systems, and system installation and maintenance. It is also suggested that the number of sanitary facilities for passengers should be much higher than has been the custom.

• Supplemental Notes:
  • Shipp. World & Shipb., 179 <1983> p.591 <Nov.> (1 p, 2 diag, 1 phot.)
• Publication Date: 1983

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00686713
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM