Table of Contents
Provides requirements for the inspection, repair and alteration of in-service boilers, pressure vessels, piping, safety equipment and associated controls. It also provides guidance in the execution of such inspections. These inspections include the initial inspection after installation and prior to commissioning. Information is also given to facilitate grounds for agreement between appropriate regulatory authorities, owners and inspectors in establishing uniform minimum requirements for in-service inspections.
This Standard specifies the requirements for the inspection, repair and alteration of in-service boilers, pressure vessels, piping, safety equipment and associated controls (hereinafter referred to as pressure equipment), and gives guidance in the execution of such inspection. It includes the initial inspection after installation and prior to commissioning. The inspection flow diagram (see Figure 1.1) illustrates the various types of inspection covered by this Standard.
This Standard provides information for owners, and inspectors to facilitate grounds for agreement, and the establishment of uniform minimum requirements for in-service inspections, including inspection frequencies and procedures, to assist in assuring safe and economic operation. Information is provided for the assessment of defects and deterioration of pressure equipment.
1 No rules can be written in sufficient detail to cover all aspects of the inspection of in-service pressure equipment. Each owner is responsible for ensuring that the extent and frequency of inspection is appropriate and adequate for the continued safe and economic operation of the pressure equipment. This may require the seeking of expert outside advice.
2 Duty of Care is now prescribed on employers and employees regardless of regulation or standards. This Standard does not supersede such Duty of Care.
This Standard may be used by inspection bodies and owners to set minimum standards of in-service inspection.
This Standard applies to but is not limited to pressure equipment covered by AS/NZS 1200. Typically it includes the following:
(a) Boilers and associated pressure parts, controls and pipework covered by AS 1228, BS 1113, BS 2790 and AS 2593.
(b) Pressure vessels and associated pressure parts, controls and pipework covered by AS 1210, NZS/BS 5500, ANSI/ASME BPV-VIII-1 and AS 2971 (serially produced pressure vessels) and BS/EN 286.1.
(c) Pressure piping covered by AS 4041, NZS/BS 806, ASME B 31.1 and ASME B 31.3.
(d) Storage tanks built to ANSI/API 620 or equivalent.
First published as AS 3788-1990.
Revised and redesignated AS/NZS 3788:1996.
Third edition 2001.