FULL SCALE MEASUREMENTS ON SEAKEEPING PERFORMANCE OF PLANT BARGE IN A SEAWAY

If massive machinery and equipment constituting a plant could be prefabricated and assembled aboard a barge and towed on a river and/or sea to the plant site, the plant construction involved under various difficult conditions would become easy and the whole construction cost and period would be minimized. Under this concept, Ishikawajima-Harima Heavy Industries Co., Ltd. (IHI) developed the so-called IP System (Industrial Platform System), under which an industrial plant would be functionally built on a barge, or sometimes on several barges. In constructin a 750-T/D bleached kraft pulp plant for Jari Florestal e Agropecuaria, Ltd., Brazil, the IP System was practically and successfully employed and the plant went into operation in January, 1979, showing valuable technical achievements. From these technical achievements, the results of full scale measurements of the seakeeping performance of a plant barge in a seaway are introduced as they will be helpful to other plant construction projects to be carried out under a similar method. A 220 m long, 45 m wide and 14.5 m deep floating box-type plant barge was towed for about three months, covering a distance of 13,000 sea miles, from Japan to Brazil by way of the Cape of Good Hope. There was no precedent for such a large floating barge. During the towing, several things concerning motions and strength of the floating plant barge and wave heights were measured with full satisfaction. The authors conducted frequency distribution analyses, and obtained an auto power spectrum and a cumulative distribution on motions and strength. Based on these analytical methods, the measured values were compared with the calculated ones confirming the validity of their predictive calculation techniques currently in practice. For this purpose, the frequency response function in waves, the features of the short-term and the long-term probability distributions on motions and strength of the plant barge were investigated.

Media Info

  • Features: References;
  • Pagination: p. 419-428

Subject/Index Terms

Filing Info

  • Accession Number: 00329919
  • Record Type: Publication
  • Report/Paper Numbers: Volume 4 Proceeding
  • Files: TRIS
  • Created Date: Apr 15 1981 12:00AM