The Physical Protection of Nuclear Material and Nuclear Facilities INFCIRC/225/Rev.4 (Corrected)

DEFINITIONS

2.1.   ASSESSMENT:

The determination by a guard or an electronic system of the cause of an alarm and the extent of the threat.

2.2.   CENTRAL ALARM STATION:

An installation which provides for the complete and continuous alarm monitoring, assessment and communications with guards, facility management and the response force.

2.3.   DEFENCE IN DEPTH:

A concept used to design physical protection systems that requires an adversary to overcome or circumvent multiple obstacles, either similar or diverse, in order to achieve his objective.

2.4.   DESIGN BASIS THREAT:

The attributes and characteristics of potential insider and/or external adversaries, who might attempt unauthorized removal of nuclear material or sabotage, against which a physical protection system is designed and evaluated.

2.5.   GUARD:

A person who is entrusted with responsibility for patrolling, monitoring, assessing, escorting individuals or transport, controlling access and/or providing initial response.

2.6.   INNER AREA:

An area inside a protected area where Category I nuclear material is used and/or stored.

2.7.   INTRUSION DETECTION:

Detection of an intruder by a guard or by a system comprising of a sensor(s), transmission medium and control panel to annunciate an alarm.

2.8.   PATROL:

A function carried out by guards to inspect elements of physical protection at regular or irregular intervals.

2.9.   PHYSICAL BARRIER:

A fence or wall or a similar impediment which provides penetration delay and complements access control.

2.10.   PROTECTED AREA:

An area under surveillance, containing Category I or II nuclear material, and/or vital areas surrounded by a physical barrier.

2.11.   RESPONSE FORCES:

Persons, on-site or off-site who are armed and appropriately equipped and trained to counter an attempted unauthorized removal of nuclear material or an act of sabotage.

2.12.   SABOTAGE:

Any deliberate act directed against a nuclear facility or nuclear material in use, storage or transport which could directly or indirectly endanger the health and safety of personnel, the public and the environment by exposure to radiation or release of radioactive substances.

2.13.   SECURITY SURVEY:

A detailed examination, made by the State s competent authority, of proposed physical protection measures in order to evaluate them for approval.

2.14.   TRANSPORT:

International or domestic carriage of nuclear material by any means of transportation beginning with the departure from a facility of the shipper and ending with the arrival at a facility of the receiver.

2.15.   TRANSPORT CONTROL CENTRE:

An installation which provides for the continuous monitoring of vehicle location and security status and for communication with the transport vehicle, its guards, the response forces and the shipper/receiver.

2.16.   UNAUTHORIZED REMOVAL:

The theft or other unlawful taking of nuclear material.

2.17.   VITAL AREA:

An area inside a protected area containing equipment, systems or devices, or nuclear material, the sabotage of which could directly or indirectly lead to unacceptable radiological consequences.

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