Confirmation of automatic flow control for a gaseous effluent sampling system
S.A. Epperson · University of North Texas Digital Library (University of North Texas) · 1990
The Department of Energy Orders require continuous sampling of potential radionuclide release points to the environment. To achieve continuous isokinetic sampling under fluctuating flow conditions, flow control valves are installed to match the sampling flow rate to the exhaust flow rate. If the flow control valves are not operated properly, sampling is not isokinetic. The system's operating performance can be verified by superimposing the plots of the daily release and sampling volumes. When the variance in the daily sampling volume plot properly tracks the daily release volume the system is operating and sampling isokinetically.