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Predecessor
Volume 29, Issue 1
Displaying 1-8 of 8 articles from this issue
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Takeyasu INOUE1991 Volume 29 Issue 1 Pages 2
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSDownload PDF (1614K) -
Hideo KITAGAWA1991 Volume 29 Issue 1 Pages 3-12
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSPresent states and the problems of the technology required for the counter-measure for corrosion in oil storage tanks in Japan are discussed from the following viewpoints; (1) The conditions peculiar to Japan in oil-tank evironments. (2) Characteristics of the counter-measure in Japan and the activities in HPI. (3) Economical and spcial backgrounds of the present counter-measure. (4) Present states of the counter-measure. (5) Present states of the related technolgy. (6) Revised HPI Standard on corrosion protection and maintenance of oil storage tanks.View full abstractDownload PDF (1261K) -
Masanori SHIGEMURA1991 Volume 29 Issue 1 Pages 13-19
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSUnder-ground steel tanks must have secondary containment. A single-walled tank is the first or primary containment. Using only primary containment, a leak can escape into the enviroment.
But by enclosing an under-ground steel tanks with-in a second wall, leaks can be contained and detected quickly before harming the environment.
There are several ways to construct secondary containment. But those solution to a problem will take a little time to study of law.View full abstractDownload PDF (666K) -
Asamichi KAMEI1991 Volume 29 Issue 1 Pages 20-28
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSIn order to prevent leakage accidents in a oil storage tank, it is important to be acquainted with the state of deterioration. Unless the tank is maintained properly, estimation of the life may be indispensable to avoid accidents. In this paper, the life is defined as time necessary for a deepest corrosion pit on a steel plate to penetrate through the thickness.
Method to predict the life are shown on the bases of statistics. Some data on corrosion rate of bottom plates are reviewed and a new interpretation about scattered values appeared in such data is introduced, which will be useful to estimate the reliability of predicted life. Extremal statistics is also reviewed to estimate the maximum corrosion depth on the outer surface of bottm plate and an usage of double exponential distribution is shown in an example for life prediction.View full abstractDownload PDF (847K) -
Kunihisa TAJIMA1991 Volume 29 Issue 1 Pages 29-36
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSIn internal checking of existing petroleum storage tanks, it is found that most of them were required some repaires. Though there are many causes or reasons to be repaired, those causes or reasons are able to be categorized into some groups. This report is to introduce the problems on repair of existing petroleum storage tanks based on those findings of each group.View full abstractDownload PDF (2869K) -
Masaki ISHIKAWA1991 Volume 29 Issue 1 Pages 37-44
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSKamigoto Oil Storage Terminal was completed in September 1988, as the first floating oil storage terminal in the world. About 3.4 million kiloliters of crude oil had been loaded from Octorber 1988 till January 1989. Currently holding the oil, the system has been satisfactorily operated till now. The characteristics for the maintenance work of this terminal are as follows;
(1) The floating oil storage method makes use of the mooring huge barge for the first time in the world. The examination method based on the law is fundamentally applied to the oil storage barge, but there is no precedent for this. In the future the maintenance work plan and method must be established by accumulating actual results.
(2) The maintenance work of the oil storage barge is different from the one of the land tank. For the land tank the maintenance work is within the limits of the tank facilities. On the other hand, for the oil storage barge the limits of maintenance work extend to the land facilities in connection with the oil storage barge.View full abstractDownload PDF (888K) -
Kazuo UEDE1991 Volume 29 Issue 1 Pages 45-54
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSBeginning with the small In-ground tanks, pursued by the defunct Japanese navy in the early days of development, present In-ground tanks attained to the one of the biggest storage tanks in the world.
It's benefits are most in small requirement of area, and in safetiness and soundness against an accident or misfortune such as fire and earthquake.
Adopting the floating roof to the In-ground tanks results in reduction of construction cost and progress in bigger capacity tanks.View full abstractDownload PDF (1034K) -
Shoichi YOSHIDA1991 Volume 29 Issue 1 Pages 55-62
Published: January 25, 1991
Released on J-STAGE: August 05, 2010
JOURNAL FREE ACCESSThe floating roofs are used in many large-sized oil storage tanks to reduce evaporation. The single deck type floating roofs, considered herein, consist of a thin circular plate (deck) attached at the edge to a buoyant ring (pontoon) of box shaped cross section. Under the accumulated rain water condition, the deck is deflected largely, and both its edge part and the pontoon are compressed tangentially. So, the geometrically nonlinear stress analysis and the bifurcation buckling analysis are required to design the floating roofs. Since the load condition due to the rain water depends on the deflected deck shape, it is difficult to find the unique equilibrium roof condition. This paper describes the bifurcation buckling analysis of the floating roofs by the axisymmetric finite element method. The load incremental methods is used in order to modify the water level at each stage.View full abstractDownload PDF (786K)
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