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Title: Generic physical protection logic trees

Generic physical protection logic trees, designed for application to nuclear facilities and materials, are presented together with a method of qualitative evaluation of the trees for design and analysis of physical protection systems. One or more defense zones are defined where adversaries interact with the physical protection system. Logic trees that are needed to describe the possible scenarios within a defense zone are selected. Elements of a postulated or existing physical protection system are tagged to the primary events of the logic tree. The likelihood of adversary success in overcoming these elements is evaluated on a binary, yes/no basis. The effect of these evaluations is propagated through the logic of each tree to determine whether the adversary is likely to accomplish the end event of the tree. The physical protection system must be highly likely to overcome the adversary before he accomplishes his objective. The evaluation must be conducted for all significant states of the site. Deficiencies uncovered become inputs to redesign and further analysis, closing the loop on the design/analysis cycle.
Authors:
Publication Date:
OSTI Identifier:
5360762
Report Number(s):
SAND-79-1382
ON: DE82006999; TRN: 82-013094
DOE Contract Number:
AC04-76DP00789
Resource Type:
Technical Report
Research Org:
Sandia National Labs., Albuquerque, NM (USA)
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; NUCLEAR FACILITIES; PHYSICAL PROTECTION; MATHEMATICAL LOGIC; ADVERSARIES; EVALUATION; SYSTEMS ANALYSIS 055001* -- Nuclear Fuels-- Safeguards, Inspection, & Accountability-- Technical Aspects