South Africa pressure equipment knowledge centre.
Detailed answers to pressure vessel, air receiver, AIA, SANS 347, inspection, testing, NDT and compliance questions — each on its own dedicated page for users, Google and AI-search systems.
How Often Must a Pressure Vessel Be Inspected in South Africa?
There is no safe one-line answer that should be applied blindly to every vessel. The inspection interval depends on the applicable Pressure Equipment Regulations, equipment type, c
Read guide →How Often Must an Air Receiver Be Tested?
Air receivers are pressure vessels used in compressed-air systems. Their inspection and testing requirements should be determined from the applicable legal framework, inspection hi
Read guide →Does an Air Receiver Need a Certificate?
An air receiver may require formal inspection and certification records depending on the applicable South African pressure-equipment requirements. The documentation should be trace
Read guide →What Is an AIA in South Africa?
AIA commonly means Approved Inspection Authority. In the pressure-equipment context, an AIA is an inspection body approved for a defined scope of regulatory inspection work. The ap
Read guide →What Is an Approved Inspection Authority?
An Approved Inspection Authority is an inspection body formally recognised for specific regulated inspection activities. Its authority is limited to the scope for which it has been
Read guide →What Is AIA-IS?
AIA-IS is commonly used in South Africa to describe an Approved Inspection Authority operating in the in-service pressure-equipment inspection environment. In practice, the exact l
Read guide →Do I Need an AIA to Inspect a Pressure Vessel?
Whether an AIA is required depends on the regulated activity, pressure equipment category and current South African legal requirements. Do not appoint a provider based only on the
Read guide →What Is a Pressure Vessel Certificate?
A pressure vessel certificate is a formal record associated with a defined inspection, test or compliance activity on a specific vessel. The certificate should be traceable to the
Read guide →How Long Is a Pressure Vessel Certificate Valid?
The validity of a pressure vessel certificate should not be assumed from a generic number of years. It depends on the applicable inspection interval, equipment type, service, condi
Read guide →What Happens If a Pressure Vessel Inspection Expires?
An expired inspection can expose the asset owner to safety, compliance, insurance and business-continuity risk. The correct response is to assess the vessel’s status promptly, gath
Read guide →What Documents Are Required for a Pressure Vessel?
A complete pressure-equipment file should make it possible to identify the vessel, understand its design and history, verify previous inspections and trace repairs or alterations.
Read guide →What Are the Pressure Equipment Regulations?
The Pressure Equipment Regulations form part of South Africa’s legal framework governing the design, manufacture, conformity assessment, operation, inspection and related controls
Read guide →What Is SANS 347?
SANS 347 is associated with the categorisation and conformity-assessment framework for pressure equipment in South Africa. It is commonly used to determine equipment category and t
Read guide →Who Can Sign a Pressure Vessel Certificate?
The authorised person who may sign a pressure-vessel certificate depends on the regulated activity, the inspection body’s approved scope and the competence/authorisation requiremen
Read guide →Can a Qualified Person Inspect a Pressure Vessel?
A qualified or competent person may be able to perform defined technical inspection tasks within their competence, but this does not automatically mean they can perform every regul
Read guide →AIA vs Competent Person: What Is the Difference?
An AIA is an approved inspection body operating within a formally granted scope. A competent or qualified individual is a person with defined technical competence. The two concepts
Read guide →Air Receiver Inspection Checklist
A practical air-receiver inspection starts long before the inspector arrives. Good preparation reduces delays, repeat visits and missing-document problems.
Read guide →Pressure Vessel Inspection Checklist
Use this checklist to prepare equipment, records and site access before a pressure-vessel inspection. The final inspection scope must still be confirmed by the authorised inspectio
Read guide →Hydrostatic vs Pneumatic Pressure Testing
Hydrostatic testing uses a liquid, commonly water, as the test medium. Pneumatic testing uses a gas. Because compressed gas stores substantially more energy than an incompressible
Read guide →How Does Ultrasonic Thickness Testing Work?
Ultrasonic thickness testing sends high-frequency sound through a material and measures the return time of the sound wave. With the correct calibration and material velocity, the i
Read guide →MAWP vs Design Pressure vs Working Pressure
These pressure terms are related but should not be used interchangeably. Design pressure is used in the engineering design basis. MAWP is the maximum allowable working pressure est
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