covec
I could reply at length, but here's the official answer. (Search for Risk). It uses the phrase "the IPT SHOULD" a lot. That is, none of what it says is actually mandated. Also, the first entry refers to the IPT having a risk register. Nowhere does it mention that it is DEC who should initiate the Register. Having got this basic principle wrong, I'd take the rest with a pinch of salt.
http://www.ams.mod.uk/
JFZ90
"You all know that adherance to standards in itself is no guarantee of safety either so implying otherwise is also misleading out of context".
No-one is suggesting adherence to standards guarantees safety, but I think aircrew reading this would prefer me to invoke said standards rather than treating them as an optional nuisance. I sincerely hope you are never placed in the position of being instructed to ignore these standards.