Development of an electret passive environmental radon monitor (E-PERM (trade name)). Phase 2. Report for January 1988-January 1993 (Final)

Technical Report · Thu Dec 31 23:00:00 EST 1992

OSTI ID:5370040

Kotrappa, P; Dempsey, J C

The development of an electret ion chamber modified for radon measurement is described and characterized. It is called an Electret Passive Environmental Radon Monitor (E-PERM). The responses of two types of electret sensors and the E-PERM are reported. Their E-PERM precision was 4.8 percent. The result of blind-tests of 497 units submitted to the EPA Radon Monitoring Proficiency Program by 133 different E-PERM users are shown. The average accuracy of the E-PERMs tested was 11.4 percent. Costs per measurement are estimated and compared with other passive monitoring methods. E-PERM evaluations from eight recent studies are summarized in Appendix A. The results demonstrate that this new type of radon monitor is well suited for measuring radon in homes.

• Research Organization: Rad Elec, Inc., Frederick, MD (United States)
• OSTI ID: 5370040
• Report Number(s): PB-94-131455/XAB; REPT--93-1
• Country of Publication: United States
• Language: English

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