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AS/NZS 3788:2006
Pressure equipment - In-service inspection


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General Product Information

Document Type Standard
Status Current
Publisher:    Standards Australia
Committee ME-001
Supersedes:
AS/NZS 3788:2001
DR 05161



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Abstract

Specifies minimum requirements for the inspection, repair and alteration of in-service boilers, pressure vessels, piping, safety equipment and associated controls, and gives guidance on the execution of such activities. These inspections include the initial inspection after installation and prior to commissioning. Information is also given to facilitate grounds for agreement between the interested parties in establishing appropriate inspection intervals and procedures for pressure equipment.

Scope

This Standard specifies the minimum requirements for the inspection, repair and alteration of in-service boilers, pressure vessels, piping, safety equipment, and associated safety controls (hereafter referred to as pressure equipment), and gives guidance in the execution of such activities. Guidance is included for the inspection of ancillary equipment such as structures. This Standard also specifies the requirements for 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 to facilitate grounds for agreement between interested parties, and the establishment of uniform minimum requirements for in-service inspections, including inspection intervals and procedures, to assist in assuring safe and economic operation. Information is provided on mechanisms of deterioration, the assessment of defects, and the assessment of fitness for service of pressure equipment.
No rules can be written in sufficient detail to cover all aspects of the inspection of in-service pressure equipment. The owner is responsible for ensuring that the extent and frequency of inspection is appropriate and adequate for the continued safe operation of the pressure equipment. This may require the seeking of expert advice.
Duty of Care is now prescribed by Occupational Health and Safety Legislation. This Standard does not supersede such Duty of Care, but is intended to complement and contribute to it.

Application

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 pipe work covered by AS 1228, BS 1113, BS 2790, AS 2593 and ASME BPV-I.
(b) Pressure vessels and associated pressure parts, controls and pipe work covered by AS 1210, BS PD 5500, EN 13445, ASME BPV-VIII, AS 2971 (serially produced pressure vessels) and EN 286-1.
(c) Pressure piping covered by AS 4041, NZS/BS 806, ASME B 31.1 and ASME B 31.3.
(d) Pressurized storage tanks built to API 620 or equivalent.
(e) Fired heaters.
(f) Heritage boilers and pressure vessels.
Although pressure equipment with Hazard Level E (to AS 4343) is within the scope of this Standard, no specific requirements have been included. To ensure safety, in-service inspection of such equipment should follow the principles of this Standard, along with good engineering practice.
This Standard does not specifically deal with the following equipment, but provides information which may be used as guidance.
(i) Storage tanks covered by AS 1940 and built to API 650, AS 1692 or equivalent (refer API 653).
(ii) Miniature boilers to the AMBSC codes.
(iii) Pressurized machines, e.g. turbines, compressors, etc.
(iv) Pipelines as per AS 2885 or equivalent.

History

First published as AS 3788-1990.
Revised and redesignated AS/NZS 3788:1996.
Third edition 2001.
Fourth edition 2006.

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