There are four checklists in the appendix which security managers can copy directly, or can use as guidelines for developing their own checklists. The checklists are keyed to corrective-action guides found in the body of the report. In addition to the corrective-action guides, the report gives background information on the nature of security systems and discussions of various special problems of the licensed nuclear industry. Tabular data, 10 references and a 22-item bibliography are provided. (Author abstract modified)