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Filter for on-line air monitor unaffected by radon progeny and method of using same

United States Patent

5,977,547
November 2, 1999
View the Complete Patent at the US Patent & Trademark Office
Savannah River National Laboratory - Visit the Technology Transfer Website
An apparatus for testing air having contaminants and radon progeny therein. The apparatus includes a sampling box having an inlet for receiving the air and an outlet for discharging the air. The sampling box includes a filter made of a plate of sintered stainless steel. The filter traps the contaminants, yet allows at least a portion of the radon progeny to pass therethrough. A method of testing air having contaminants and radon progeny therein. The method includes providing a testing apparatus that has a sampling box with an inlet for receiving the air and an outlet for discharging the air, and has a sintered stainless steel filter disposed within said sampling box; drawing air from a source into the sampling box using a vacuum pump; passing the air through the filter; monitoring the contaminants trapped by the filter; and providing an alarm when a selected level of contaminants is reached. The filter traps the contaminants, yet allows at least a portion of the radon progeny to pass therethrough.
Phillips; Terrance D. (Aiken, SC), Edwards; Howard D. (Augusta, GA)
Westington Savannah River Company (Aiken, SC)
09/ 009,920
January 21, 1998
STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT The U.S. Government has rights in this invention pursuant to the terms of contract number DE-AC09-96SR8500 between the Westinghouse Savannah River Company and the Department of Energy.