Record Display for the EPA National Library Catalog


Main Title Radon pressure differential project, phase I Florida radon research program /
Author Cummings, James B.,
Other Authors
Author Title of a Work
Tooley, John J.,
Moyer, Neil,
Sanchez, David C.,
Publisher U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,
Year Published 1992
Report Number EPA/600-SR-92-008
OCLC Number 261208142
Subjects Architecture, Domestic--Florida ; Radon mitigation ; Radon--Prevention
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD  EPA 600-SR-92-008 In Binder Headquarters Library/Washington,DC 10/24/2018
EKBD  EPA-600/SR-92-008 Research Triangle Park Library/RTP, NC 10/15/2008
ELBD ARCHIVE EPA 600-SR-92-008 In Binder Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 600-SR-92-008 repository copy AWBERC Library/Cincinnati,OH 02/01/2016
Collation 2 pages ; 28 cm
Caption title. At head of title: Project summary. "Mar. 1992." "EPA/600-SR-92-008."
Contents Notes
The report gives results of tests on 70 central Florida houses to assess and characterize pressure differentials in new (age 5 years or less) Florida houses. Blower door tests determined house airtightness and air distribution system leakage. The 70 houses had an average airtightness of 7.23 air changes per hour at 50 Pa (ACH50). Significant leaks were found in the ductwork in most houses tested, both on the supply and return sides of the air handler. When the air distribution system was sealed off, house ACH50 decreased to 6.421, indicating that 11.2% of the house leak area is in the duct system. Differential pressure measurements were taken between the main body of each house and sub-slab areas, out-doors, and many locations within the house. These measurements indicated significant pressure differentials in the house due to a number of factors. Return leaks produced a maximum whole-house pressurization of 5.5 Pa. Supply leaks produced a maximum whole-house depressurization of -4.8 Pa. Closed interior doors produced a maximum closed-room pressurization of 37 Pa and maximum main-body depressurization of -14.8 Pa. Turning on all exhaust fans and interior dryers typically depressurized the house to 0 to -4 Pa, but one very tight house was depressurized to -37 Pa. One of the most important findings of this study is that large-magnitude localized depressurization occurs because of return plenum leaks. Subslab depressurization of up to 6 Pa have been found 5.5 m from the return plenum. Depressurization of -6 Pa in a garage and a -4 in a utility room has been observed.