This Standard sets out requirements for materials, design, construction, inspection and testing of boilers as defined in AS/NZS 1200. Specifically applies to design and construction of boilers including superheaters, reheaters and economizers. Incorporates the existing AS 1228-1990, Boilers-Water-tube, and AS 1797-1986, Boilers-Fire-tube, shell and miscellaneous, into one document. This incorporation eliminates duplication and possible conflict when considering the core documents for the Pressure Equipment suite of Standards.