Nuts and bolts, gin and tonic, Romeo and Juliet. Some things just go hand-in-hand, don’t they? And these days it seems that whenever safety is a concern, there’s invariably a requirement to undertake a risk assessment. So perhaps it’s not surprising then, as the Pressure Equipment Directive contains essential safety requirements, that whatever the choice of conformity assessment module, the manufacturer’s technical documentation must include ‘an adequate analysis and assessment of the risks’. But what lies behind that phrase? What’s required?