EN 14015, fully titled “Specification for the design and manufacture of site built, vertical, cylindrical, flat-bottomed, above ground, welded, steel tanks for the storage of liquids at ambient temperature and above,” is a European Standard (EN).
A critical note: You cannot legally download a free PDF from unofficial websites. En 14015 Pdf
The high volume of searches for reflects the document's indispensability in the engineering lifecycle. Unlike some guidelines that are merely advisory, EN 14015 is often a regulatory requirement. Here is why professionals need access to this specific document: EN 14015, fully titled “Specification for the design