pop up this little lid and
you will see one of our
gas detector. If you look
underneath the sink in
the kitchen you’ll find
another.”
Petersen also mentions that you can’t just
take one reading. At the
Long Beach development location, after gas
detectors were installed,
they read zero in the
morning. But in the afternoon, after the marine air
burnt off and the sun was
out, the readings started
to increase, and some of
them increased quite a
bit. It was a result of the
methane off-gassing as
the ground heated up.
When building in these zones, the common construction
practice is to place a barrier underneath the foundation and
vent the methane out to atmosphere. Some systems, Petersen
points out, are a little bit more elaborate, turning on blowers if
the level reaches a set point. Methane can also occur in numerous other places. Petersen mentions the huge containers at the
Port of LA that hold individual shipping containers before the
clear customs; and even inside freezers at a seafood distributor. If the levels become too high, alarms are set to notify both
on-site personnel and the fire department.
Sources of Man-Made Methane
Landfills
Natural Gas Systems
Enteric Fermentation
Coal Mining
Manure Management
Wastewater Treatment
Petroleum Systems
Rice Cultivation
Stationary Sources
Abandoned Coal Mines
Mobile Sources
Petrochemical Production
Iron and Steel
Agricultural Residue Burning
Source: EPA
C
LL FOR ARTICLES
Gases & Instrumentation publishes articles on the technology and
application of industrial, specialty and medical gases in all vertical
markets. Queries should include an abstract or a draft of the article.
For guidelines or to submit an abstract/article, contact:
PAUL NESDORE
Publisher / Editor
Gases & Instrumentation
pnesdore@gasesmag.com
781-431-7168
