(Art. 9, para. 2)
The arrangement of security zones, areas and barriers must be based on the following model:
The various security barriers perform the following functions: – The vehicle barrier protects against attacks using vehicles and obstructs the transport of heavy arms or explosives through the no access zone to the perimeter. – The perimeter surrounds the protected area. It detects intruders, identifies the location of the attack and triggers the alarm. – Security barriers D, C and B provide increasingly higher levels of resistance towards the inner and vital area. They protect and surround the corresponding areas containing systems and equipment important to safety.
In the case of interim storage installations and deep geological repositories, ENSI shall decide whether it is possible to waive any security barriers.
Security systems (e.g. central alarm stations, guard-houses) that permit pedestrian or vehicle access to security zones must be located behind a barrier with the same level of resistance that is required for the protection of the corresponding zone.
The level of resistance of a barrier must be maintained, and for this reason, application of the two door interlock principle is required. If by way of exception it is necessary to deviate from or deactivate this method, access must be controlled by the security guards
| Material | Form | Category | ||
|---|---|---|---|---|
| I | II | III | ||
| 1. Plutoniuma | Unirradiatedb | 2 kg or more | Less than 2 kg but more than 500 g | 500 g or less, but more than 15 g |
| 2. Uranium-235 | Unirradiatedb | |||
| – uranium enriched to 20%235U or more | 5 kg or more | Less than 5 kg but more than 1 kg | 1 kg or less, but more than 15 g | |
| – uranium enriched to at least 10%235U but to less than 20%235U | – | 10 kg or more | Less than 10 kg but more than 1 kg | |
| – uranium enriched above natural content, but to less than 10%235U | – | – | 10 kg or more | |
| 3. Uranium-233 | Unirradiatedb | 2 kg or more | Less than 2 kg but more than 500 g | 500 g or less, but more than 15 g |
| 4. Irradiated fuel | Depleted or natural uranium, thorium or low-enriched fuel (less than 10% fissile content) | |||
| 5. Radioactive waste | vitrified | High-level activity | ||
| a All plutonium except that with isotopic concentration exceeding 80%238Pu. | ||||
| b Material not irradiated in a reactor or material irradiated in a reactor but with a radiation level of equal to or less than 1 Gy/hour at one metre unshielded. |
Material in this category must be protected against unauthorised removal with extremely reliable systems as follows:
Use and storage within a highly protected inner area i.e. a protected zone for the type of material defined for category II, access to which is restricted to persons whose integrity has been verified, and which is surveyed by guard personnel who are in close contact with the relevant emergency crews. The aim of the various measures in this connection is to identify and prevent malicious acts unauthorised access and the unauthorised removal of nuclear material.
Movement of nuclear material in accordance with special precautionary measures for the described method for the transport of material in categories II and III , and under constant surveillance by accompanying personnel and under conditions that guarantee close contact with the relevant emergency crews.
Use and storage within a protected area access to which is monitored, i.e. a zone that is under constant surveillance by security personnel or electronic devices, and is surrounded by a physical perimeter with a limited number of adequately controlled points of access, or a zone with an equivalent level of physical protection.
Movement of nuclear material in accordance with special precautionary measures, including prior arrangements between sender, recipient and carrier, plus prior agreement between the legal entities subject to the jurisdiction and regulatory authorities of the country of origin and destination for cross-border transport, concerning the time, place and procedure for the transfer of responsibility for the consignment.
Use and storage within a zone, access to which is under surveillance.
Movement of nuclear material in accordance with special precautionary measures, including prior arrangements between sender, recipient and carrier, plus prior agreement between the legal entities subject to the jurisdiction and regulatory authorities of the country of origin and destination for cross-border transport, concerning the time, place and procedure for the transfer of responsibility for the consignment.
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