Range Of Enviroscan Projects
Dioxin and Furan emissions have been measured from several industrial sites in South Australia using USEPA Method 23 and 23A. Results generally conform with the European standard of 0.1 ng/Nm3. Samples are analysed by the Australian Government Dioxin Laboratory in Sydney or by Assure Quality in New Zealand. |
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A gas sampling system
was set-up to cope with high dust loadings at temperatures
up to 1100°C and velocities to 30m/s. Gas analyses
were made by both IR and EC instruments, with data
acquired from up to 5 sites spread over 80 metres
of ductwork simultaneously. |
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A large-scale search was carried out in Gulf St Vincent, South Australia to locate a submerged vessel. The initial search area exceeded 500km2 with water depths ranging to 40 metres. Sidescan sonar coupled with magnetometer was used on a grid search, with a line spacing of 700metres and DGPS navigation to 4metres. A target was located after 120 hours of survey and identified for the client by detailed sonargram. Total survey cost was <$50,000. |
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| A third portable CEMS
unit was brought on-line in 2008. The Horiba PG-250
unit measures NOx, SO2, CO, CO2 and O2 using chemiluminescence
and non-dispersive infra-red. It meets all USEPA requirements
for backup CEMS. NATA calibration gas standards ensure
accuracy and dilution probes cope with wet (>20%
moisture) and high (>1%) SO2, high (>20%) CO2
gas streams. Logging is via RS-232C interface to user
specification. |
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