THE PROBLEM OF DETERMINING THE NUMBER OF PREVENTIVE SURVEYS OF SHIP MACHINERY IN THE PERIOD BETWEEN OVERHAULS

The importance of preventive surveys between overhauls is stressed, because prevention is generally cheaper than cure. At the same time, too frequent (and unnecessary) prophylactic work should be avoided, since it is not only tiresome for the crew, but may also adversely affect the machinery items to which it is applied. From considerations of reliability theory the Author drives a general formula for determining the optimum number of preventive surveys ensuring maximum operating reliability. He regards this analytical approach as a necessary basis for further, work, where the formula is related to and verified by operating practice. It is also pointed out that the formula does not take into account the idle time for items which are sound but unused, because their services are not required. The assumption of zero idle time is considered justified by the underlying assumption that the machinery will be used profitably, i.e. that capital amortisation will occur as planned. In these conditions idle time may be neglected. Order from BSRA as No. 49,067.

  • Corporate Authors:

    Polish Assoc of Mech Eng, Sec of Shipbuilders

    Rajaska 6
    80-850 Gdansk,   Poland 
  • Authors:
    • Girtler, J
  • Publication Date: 1977-9

Language

  • Polish

Media Info

  • Pagination: p. 365
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00182514
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Oct 31 1978 12:00AM