Hi SafetyforConstruction
OK Question 1 - before I even considered working out how to put together an audit strategy for my own employer I would want to get a feel for how the organisation ticks.
Then I would want to consider the scope of previous audits - so have they been audits against systems, against legal requirements (and perhaps best practice) or possibly a mix of both? Lots of audits focus on systems which might pass the test of covering all the points in the relevant ISO or other standard, but that doesn't mean that the systems are necessarily fit for purpose.
Further lots of audits (and inspections) tend to focus on the Safety risks that are easily seen as being liable to result in personal injury to one or two people.
Which means that such audits miss out on a lot of other risks that are perhaps at least as important:
1. The low probability, high consequence scenarios that could cause mass harm in the short term - you mention the potential of overloading and I wonder why you would wish to place faith that the engineers are always getting it right!
Arguably the greatest failure of "CDM" has been lack of focus on the front end duty holders - Clients, Designers and the Co-ordinator required by the parent EC Directive, named as the Principal Designer in CDM 2015.
These duty holders don't always get it right. I used to work for a major design practice!
AND, of course, it would be unreasonable to home in site workers for overloading a structure if they are not given sufficient information about how much loading is OK. What does it say in e.g. the CDM Pre Construction Information and site drawings?!?!
2. Occupational health (and, if within your remit environmental) risks where the harm tends to be longer term, but which rarely show up on whatever indicators of performance are discussed at Board level.
Slightly different if you are putting together an audit strategy as a consultant to a different orga nisation as you have to make some educated guesses as to where the room for improvement may be and make proposals based on various assumptions as no audit can cover every aspect of a business unless given unlimited budget and time.
With your degree in EH, it is very likely that you could home in on issues that have not received as much attention as they should in previous audits. So, this might be something you could use as a selling point in interview, as long as you also indicate that you want to learn about the basics that the interviewers are perhaps more interested in.