WHS Disproportionality

The precautionary approach required by the model WHS act forbids, on pain of criminal imprisonment, the exclusive use of target levels of risk (tolerable or acceptable) as a method of establishing whether a situation or circumstance is safe.

Amongst other concerns, this is problematic for those involved in SIL allocation under IEC 61508.  The usual comment is; how else can it be done?  Actually, it’s quite straight forward.