Planning Standard: The emergency plan should contain provisions to adequately assess the actual onsite
and offsite consequence of an emergency.
6.1 Consequence Determination
The emergency plan should describe the procedures that
will be used to determine the potential consequences of a
situation based on the results of hazards assessments and
input from all other pertinent areas such as intelligence
and meteorological information.
(1) The emergency plan should provide for a timely
initial consequence assessment (i.e., an assessment
whose results should be available to decision makers
in a time that is short with respect to the decision and
response time needed for protective actions).
Procedures should describe the means for making an
initial assessment which may be achieved by one or
more of the following means:
(a) Calculational models using information on
release pathways (i.e., effluent monitoring),
with computer codes that produce a
quantitative estimate of consequences within a
few minutes of the onset of any release.
(b) Simplified calculational models such as graphs,
nomograms, or worksheets that provide
operating staff or initial emergency responders
with quantitative estimates of consequences in
a short time using real-time dispersion
conditions and release data.