Non-robust determination of the Exclusion Area Boundary

By Matthew Denman on

RADTRAD provides a "worst 2-hr" dose assessment for the dose point that it believes is the Exclusion Area Boundary.  It appears to do this by pulling the last dose point that starts with the letter "E".  Thus the following set of dose locations works as intented (with the worst 2-hr dose applied to the EAB) but if you change the PZ dose location to "EPZ" or "Exclusion Area Boundary", the "worst 2-hr" evaluation will be applied to the EPZ and the EAB will only report duration of the plume doses.   

<doseLocation id="1">
<name>EAB</name>
<description>The Exclusion Area Boundary dose location must be connected to the Environment compartment.</description>
<compartment>2</compartment>
<chiQTableUsed>true</chiQTableUsed>
<chiQTableIdent>1</chiQTableIdent>
<breathingRateTableUsed>true</breathingRateTableUsed>
<breathingRateTableData>
<row>
<value>0.0</value>
<value>3.5E-4</value>
</row>
</breathingRateTableData>
</doseLocation>
<doseLocation id="2">
<name>LPZ</name>
<description>The Low Population Zone dose location must be connected to the Environment compartment.</description>
<compartment>2</compartment>
<chiQTableUsed>true</chiQTableUsed>
<chiQTableIdent>2</chiQTableIdent>
<breathingRateTableUsed>true</breathingRateTableUsed>
<breathingRateTableData>
<row>
<value>0.0</value>
<value>3.5E-4</value>
</row>
<row>
<value>8.0</value>
<value>1.8E-4</value>
</row>
<row>
<value>24.0</value>
<value>2.3E-4</value>
</row>
</breathingRateTableData>
</doseLocation>
<doseLocation id="3">
<name>PZ</name>
<description>The Emergency Planning Zone dose location must be connected to the Environment compartment.</description>
<compartment>2</compartment>
<chiQTableUsed>true</chiQTableUsed>
<chiQTableIdent>3</chiQTableIdent>
<breathingRateTableUsed>true</breathingRateTableUsed>
<breathingRateTableData>
<row>
<value>0.0</value>
<value>3.5E-4</value>
</row>
<row>
<value>8.0</value>
<value>1.8E-4</value>
</row>
<row>
<value>24.0</value>
<value>2.3E-4</value>
</row>
</breathingRateTableData>
</doseLocation>

 

Samuel Noah Edwards  ON Thu, 07/24/2025 - 10:27

Hey Matt,

Thank you for catching this.  There are some assumptions with how the EAB is determined currently.  RADTRAD assumes that the first and second locations are the EAB and LPZ respectively.  For now, please follow these convention and use the naming scheme you described above.  We are exploring alternate approaches for future releases.

Thanks,

Sam Edwards