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U.S. Department of Energy
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Filter for on-line air monitor unaffected by radon progeny and method of using same

Patent ·
OSTI ID:872633

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.

Research Organization:
WESTINGHOUSE SAVANNAH RIVER CO
DOE Contract Number:
AC09-89SR18035
Assignee:
Westington Savannah River Company (Aiken, SC)
Patent Number(s):
US 5977547
OSTI ID:
872633
Country of Publication:
United States
Language:
English