All Power Reactor Licensees (Generic Letter 77-08)

                                                               GL 77-08

                                UNITED STATES
                         NUCLEAR REGULATORY COMMISSION
                            WASHINGTON, D.C. 20555

                                    December 21, 1977

All Power Reactor Licensees

Gentlemen:

SUBJECT:  REVISED INTRUSION DETECTION HANDBOOK AND ENTRY-CONTROL
            SYSTEMS HANDBOOK

Enclosed is a revision of the Intrusion Detection Handbook, SAND 76-0554 which
may have been sent to you in May 1977.  This handbook revision was prepared by
the Facilities Protection Department, Sandia Laboratories, Albuquerque, New
Mexico under contract with the Division of Safeguards and Security, Department
of Energy (DOE) and is made available for your information as a reference
source for use in the design, installation, and operation of intrusion
detection systems.  The attached revision supersedes the previous version.
Also enclosed is the Entry-Control Systems Handbook, SAND 77-1033, also
prepared by Sandia, which provides guidance for selecting installing and
maintaining entry-control equipment.

Although these documents are marked for Official Use Only, there is no
restriction on your use and further distribution of them.  Feedback on these
handbooks is encouraged from  all recipients and should be addressed to Dr.
Samuel C. T. McDowell, Assistant Director for Research and Development,
Division of Safeguards and Security, DOE.

                                      Sincerely,


                                      Karl R. Goller, Assistant Director
                                        for Operating Reactors
                                      Division of Operating Reactors

Enclosures:
As stated