Ventilation, Heating & Scrubbing in Painting Factory of Flat Blocks

Abstract

Recently, tank-coating work for large oil tankers is increasing. From the view-points of working processes, circumstances and qualities, it is important to paint blocks on the pre-erection stages and also in the inside of a building. The followings are to report about the ventilation, heating and dust collecting for the painting factory at the Sakai Shipyard of Hitachi Zosen. Inside the factory, there are various kinds of dusts in surface preparation, solvent vapor and paint mists in paint spray. Therefore, the ventilation is very important. For thispurpose, continuous air flous (air curtain) are introduced near the side wall. The other air flows are sent from the overhead ceiling, one of them being to the block itself and the other to the above of the block. Latter air flows carry dusts, solvent vapor and paint mists to the air curtain. By this system, these substances are easily removed from the inside of this factory. In addition, this factory has a heating system for drying of paint film and a dust collecting system.