7.1 The Management Regulations 1992 resulted in a variety of risk assessment techniques being developed, many of which involved the use of risk rating or quantitative assessment techniques. However, the ACOPs accompanying both the 1992 and the 1999 Regulations have emphasised that the degree of sophistication of the risk assessment should be determined by the level of risk arising from the work activity. The 1999 ACOP provides further detail on this point: