This Standard specifies requirements for the assurance of product quality in the manufacture of boilers, pressure vessels and pressure piping including associated safety equipment (hereinafter termed pressure equipment). It covers both purchaser specifications and regulatory requirements and recognizes the manufacturer's certified quality systems and the utilization of external design verification and inspection of fabrication.The Standard applies to design, fabrication, inspection, testing, and despatch of the above equipment; and also applies to design and fabrication inspection requirements in relation to alterations and repairs where required by other Standards, e.g. AS 3788 and AS 3873. It does not apply to-(a) pressure equipment outside the scope of AS/NZS 1200;(b) installation of boilers and pressure vessels covered by AS 3892;(c) operation (including commissioning) and maintenance of boilers, pressure vessels and piping covered by AS 3873;(d) in-service inspection of boilers, pressure vessels and piping covered by AS 3788; (e) servicing of pressure equipment; (f) gas cylinders as defined in AS 2030; (g) transmission pipelines as defined by AS 1697, AS 1958 and AS 2885; or (h) tanks covered by AS 1692, AS 1940, API 650, and equivalent Standards.NOTE: The Standard makes provision for additional requirements specified by the purchaser which are to be negotiated by the relevant parties, e.g. purchaser, designer, manufacturer, design verifying body and fabrication inspection body.This Standard is referenced in AS 3788, AS 3873 and AS 3892 for the purpose of identifying hazard levels.

Under Revision see DR 97531-97532 CP (in part). Amendment 2 to AS 3920.1-1993 see DR 98584. Under Revision see DR 00081 CP First published as AS 3920.1-1993.