The outcomes of the system’s response are expressed in high-level measures for PR&PP, defined as follows.

9.3.4.1 Proliferation resistance

• Proliferation technical difficulty — The inherent difficulty arising from the need for technical sophistication, including material-handling capabilities, required to overcome the multiple barriers to proliferation.

• Proliferation cost — The economic and staffing investment required to overcome the multiple technical barriers to proliferation, including the use of existing or new facilities.

• Proliferation time — The minimum time required to overcome the multiple barriers to proliferation (i. e., the total time planned by the host state for the project).

• Fissile material type — A categorization of material based on the degree to which its characteristics affect its utility for use in nuclear explosives.

• Detection probability — The cumulative probability of detecting the action described by a segment or pathway.

• Detection resource efficiency — The staffing, equipment, and funding required to apply international safeguards to the SMR.

These measures are similar to those adopted in most assessments of PR (see discussion

in GenlV International Forum, 2011b).