Shame you even have to ask the question - a sign of the times. Panorama on BBC 1 last night covered the issue of H & S. Too few HSE inspectors to visit building sites more than once every ten years (average) but HSE - or consultant - unrealistic enough to insist on a hand rail around two small steps in a 15th century church (in which there was no record in living memory of anyone having been injured using them).
Don't get me wrong, like most of us in aviation, our work hinges on safety and its application and I'm all for it. I just think that some aspects of risk assessment, HAZID etc must be more realistic. To be fair, however, empirical data suggesting no previous occurrence does not imply there will never be an incident (see church above).
I've shown my sons' friends around a hangar - albeit 10 years ago - in close cooperation with the hangar manager, on a weekend and after our own risk assessment.