Eaton (eaton.com) has developed an electronically controlled fuel tank venting system that uses software to control the transmission of fuel vapors to a charcoal canister
while keeping liquid fuel confined to the fuel tank.
The Ministry of Economy and Commerce (MEC) has announced the recall of 2010, 2011 and 2014 Lexus CT200h models and the 2010 Toyota Zelas TC model due to a possible leak in the charcoal canister
TOM: To contain the vapors and prevent air pollution, your fuel system is kept under constant pressure, so the vapors are pushed into a charcoal canister
, where they're trapped and held.
The two most common devices used for measuring indoor radon concentrations are the alpha track detector and the charcoal canister
Measuring radon levels in a home has traditionally required leaving a charcoal canister
in the living area for 4 to 7 days, or a more sophisticated alpha (radiation)-track device in the home for up to a year.
Radon detectors such as charcoal canisters
, electret ion detectors and alpha track detectors are available at hardware stores, health departments or the Lung Association.
Several passive devices, including alpha track detectors, charcoal canisters
, charcoal liquid scintillation detectors, and electret ion chambers, are all effective testing options.
Sampling -- In the 1988-89 research project, pre- and post-mitigation radon gas monitoring was conducted using charcoal canisters
; At Ease Data Loggers, manufactured by Sun Nuclear Corp.; and Electret Passive Environmental Radon Monitors (EPERMs) manufactured by Rad Elec, Inc.
It can, however, be measured by special devices such as charcoal canisters
, electret ion detectors, and alpha track monitors.
Radon-222's 3.8-day half-life means that a week's collection in charcoal canisters
-- the most common home monitors -- yields enough for a reasonable gauge of room levels.
, small containers of activated charcoal, absorb radon in the air when the cover is removed.