Material Balance Area and Measurement Points

A material balance area (MBA) defines an area in or outside of a facility such that  

A key measurement point (KMP) is a location where nuclear material appears in a form that may be measured to determine material flow or inventory. 

In addition to the above, whenever the state has accepted the additional measures foreseen in the model protocol INFCIRC/540, IAEA inspectors are granted access to location-specific environmental sampling points where they may take samples of air, water, vegetation, soil, smears, etc., to confirm the absence of undeclared nuclear material or activities at the specified location (IAEA 1997). 

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