Multi-cavity-type vessel

The shapes used, so far, for PCRVs have varied from a cyhnder bounded by two inverted, non-prestressed, hemispherical domes, torospherical domes to spherical shells. The current trend in PCRV configuration is the use of thick-walled cylinders, the ends of which are closed by fiat slabs known as caps. The boilers and circulators are either housed within the main cavity or within the thickness of the walls the latter is known as a multi-cavity-type vessel. This study is concerned with such vessels also apart from other shapes. 

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