National Pollution Inventory NPI
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.
Samples are analysed by the Australian Government Dioxin Laboratory in Sydney or by Assure Quality in New Zealand.
Zinc smelter Gas Train Surveys
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.
Large-scale seabed search
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.
Continuous Emission Monitoring Systems
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.
A Thermo 60i CEMS unit was commissioned to complement the Horiba units. Data logging is to client specification.
A Thermo 60i CEMS unit was commissioned to complement the Horiba units. Data logging is to client specification.
