Indicators technical-human-organizational

The last requirement, i.e. if all (root)cause areas are included, was used to retrieve three pro-active methods indicating safety risks. All three methods address the entire socio-technical system (technical, human and organizational). These three methods are used to construct a new pro-active method of indicating safety risks, which includes the benefits and addresses the limitations of these three existing methods. The three methods evaluated are MORT, Johnson (Johnson, 1980), TRIPOD, Hudson (Hudson et al., 1991), and PRISMA, van der Schaaf (Schaaf van der, 1992). 

---