NDT & rail integrity, analysed
Researched, sourced analysis of the issues shaping non-destructive testing and rail infrastructure in South Africa — weld failure research, the freight maintenance backlog, passenger corridor recovery, and the regulatory regime that governs radiography. Every figure is cited; every source is linked.
INDUSTRY ANALYSIS · FREIGHT RAIL
South Africa's rail maintenance backlog is an inspection problem too
Transnet has put its freight-rail maintenance backlog at R50 billion over five years. As renewal accelerates, weld and track inspection becomes the gatekeeper between speed and safety.
TECHNICAL BRIEF · WELD INTEGRITY
Why thermit welds fail — and why you can't see it coming
Research on aluminothermic rail welds shows failures cluster in young welds and give little fatigue warning. The defects that matter are internal — which is why volumetric inspection exists.
INDUSTRY ANALYSIS · PASSENGER RAIL
PRASA's corridor recovery: thousands of new welds, one question — who certified them?
PRASA has recommissioned 35 of 40 passenger corridors and deployed R21.1 billion in a single year. Every kilometre of rebuilt perway is welded — and every weld needs a certified record.
REGULATORY BRIEF · RADIATION SAFETY
What SAHPRA actually requires before a gamma source goes to site
Industrial radiography in South Africa is regulated under the Hazardous Substances Act: licensing above 4 kBq, controlled mobile-source work, and a documented safety regime. What compliance looks like in practice.
TECHNICAL BRIEF · METHOD SELECTION
RT or UT? Choosing the right method for rail weld inspection
Radiography images the inside of a weld; ultrasonics measures into it from the surface. For rail welds the methods are complements, not rivals — here's how the choice actually gets made.
Have a weld or asset in question?
The analysis above is general. Your asset is specific — tell us what it is and which standard it must satisfy, and we will advise on the right inspection method.
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