Life cycle studies of a non-reheat steam turbine have shown that it is more important to reduce operating costs by improvements in efficiency (fuel rate) than by refinements or reductions in maintenance procedure. It is recommended that a thorough check of plant efficiency be carried out at least annually to establish fuel rate targets and areas of deficiency. The most common sources of loss are dumping of steam because of leaking or open dump valves or drains. The back pressure system and pressure governors may require occasional trimming. Leaking valves and flanges are a cumulative source of quite high losses. Turbine efficiency is affected by worn glands and rough blade surfaces and a pressure-level test of the turbine is a good indication of deposits and mechanical damages inside the turbine. Diagrams which can be used as a guide for correction of fuel rate and power output due to deviations from design data are presented in an appendix. They are based on a 32,000-shp turbine propulsion plant. Order from: BSRA No. 47,785.

  • Supplemental Notes:
    • Presented at Shipcare 76, October 13-15, 1976.
  • Corporate Authors:

    Singapore Association of Shipbuilders & Repairers

    c/o Keppel Harbour, P.O.B. 50
    Singapore 4,   Singapore 
  • Authors:
    • Cederberg, B
  • Publication Date: 1976

Media Info

  • Pagination: 9 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00173678
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Report/Paper Numbers: Paper No. 14
  • Files: TRIS
  • Created Date: Apr 26 1978 12:00AM