Basic Research on Countermeasure for Oil Spill-V : Evaluation on Setting Workability of Preventing Curtain of Spilt Oil Diffusion

Abstract

The authors have proposed an equipment enclosing a hull with curtains for the prevention of spilt oil diffusion. In this paper, the experiments on setting a curtain on board are carried out for various types of the equipment in order to know the way which the curtain can be set as soon as possible and the setting workability is evaluated. The obtained results are summarized as follows : (1) In order to use the equipment practically, a curtain which is rolled up into the shape of a rope should be handled in the setting work and the weights to sink the lower edge of the curtain into the water should be fixed in the final stage of setting the curtain. (2) For the sake of the most practical way on the setting, the stowage of a curtain in the shape of a rope on the shell plate or the handrail around a hull is proposed. On using this stowage, the curtain can be set only by release of the lashing. Therefore, it is expected to set the curtain in a few minutes just after an accident even if weather condition is rough.