Moving on to element C5, brings with it a wave of nostalgia. This element is almost identical to what was there before (workplace equipment in general), apart from some notable exceptions. A few bits have been moved in from C6 (which was on workplace machinery). But, in addition you’ll notice that the detail on non-destructive testing techniques has been reduced to a simple discussion of the advantages and disadvantages. No longer will you have to consider the principles of operation and their application. All of the previously listed specific techniques too have gone. So, it’s just the advantages and disadvantages. I assume that this does not just boil down to the advantage being it doesn’t destroy the sample (it’s called non-destructive for a reason) and the disadvantage being that it doesn’t destroy the sample (there is so much joy to be had in destroying things – just ask any demolition engineer)….
The non-destructive techniques that have previously been considered essential in this part of the syllabus have included dye penetrant (reminds me of a Welsh friend I knew), acoustic emission testing (probably just shouting loudly), ultrasonic (useful for dogs, who can hear those frequencies), X-radiography (good as a sideline for a less than fully occupied dentist or hospital radiographer), Gamma-radioagraphy (Bruce Banner aka The Hulk, has one or two tips for that), eddy current (no relation to blackcurrant) and magnetic particle (my experience is that magnetic particles are always far more easily applied than removed, but I’m probably just doing it wrong….)
Pressure systems now appear at the end ofC5. Previously they had an entire 5 hour element to themselves. This must make pressure system experts burst a gasket or even feel a little deflated. Well, the truth is a good deal of pressure systems detail (especially the testing and inspection) is sub-contracted (at least, it was when I was a lad). So, it was considered enough that safety practitioners should just have an overview of the issues. So, what has made it in is a snappy tour of what a pressure system is, inspection/examination types (overview), mechanical failure mechanisms and prevention and testing strategies. There are not even any case studies of examples of pressure system failures.