epr-method (2003) - IAEA Publications - International Atomic Energy ...

Threat category V applies to farmers and food processor in food restriction planning radius. In
this case emergency arrangements would be in place for them to be promptly warned of a
contaminating event at a Category I or III facility to take action to protect the food supply.
The most complex part of this process may be determining the threat category that should be
assumed for off-site jurisdictions. The threat category of off-site jurisdictions is determined by
their responsibilities as shown in Table IV. Figure 6 illustrates the application of threat
categories to off-site jurisdictions. Several different categories may be applicable for a
governmental jurisdiction (local or national), while only one category can apply to a facility
and on-site area. All jurisdictions, as a minimum, fall within threat category IV. In general,
the information in this publication for threat category IV is intended for national officials,
those responsible for transport of radioactive material and the operators of dangerous mobile
sources such as for radiography or satellites.
The results of this analysis should be documented and included in the NREP with a list and a
map that show threat categories of the facilities and local jurisdictions. The results of the
threat analysis will be used to implement a graded approach to emergency preparedness
arrangements commensurate with the potential magnitude and nature of the hazard.
National border
Facility
(Cat I, II or III)
On-site
(Cat I, II or III)
PAZ
(Cat I, IV & V)
UPZ
(Cat II, IV & V)
Food restriction
radius (Cat IV & V)
All jurisdictions
(Cat IV)
FIG. 6. Emergency zones and radius and application of threat categories to jurisdiction.
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