7 Site E
7.1 Introduction
Sampling was carried out at Site E on 17 March 2003. Samples were collected from the induction furnace baghouse discharge to determine the concentration and mass emission of PCDD and PCDF present in the gases discharged to the atmosphere.
The sampling point was in a vertical section of duct. Access was difficult and limited which prevented doing a full traverse of the stack.
Details of the sampling date, times and stack dimensions are:
- Sample date and time: 17 March 2003, 13:55-18:05
- Stack dimensions: 0.5 metre diameter circular duct.
7.2 Results
Table 7.1: Particulate emission from induction furnace
| Sample | Sample mass(g) | Particulate emissions | ||
|---|---|---|---|---|
| (mg/m3, dry, 0°C, 1 Atm) | (mg/m3, dry, 0 °C, 1 Atm, 12% CO2) | (kg/h) | ||
|
1 |
0.0188 |
5.2 |
44.7 |
0.02 |
Table 7.2: Average stack gas conditions at the induction furnace sampling point
View average stack gas conditions at the induction furnace sampling point (large table)
Table 7.3: Results of isokinicity for induction furnace
| Sample | Actual sample volume (m3, 0°C, 1 Atm, dry) |
Calculated sample volume (m3, 0°C, 1 Atm, dry) |
Isokinicity (%) |
|---|---|---|---|
|
1 |
3.605 |
3.8389 |
93.9% |
All samples are within the required isokinicity range of 100 ± 10 %.
Table 7.4: Combustion gas results
| CO (mg/m3) |
SO2 (mg/m3) |
NO (mg/m3) |
O2 (%) |
NO2 (mg/m3) |
|---|---|---|---|---|
|
7.5 |
< 25 |
23 |
19.6 |
3.8 |
The weight of scrap metal melted during the sampling period was 6.319 tonnes.
Table 7.5: Summary results from induction furnace sample 1 filters, rinses and trap
View summary results from induction furnace sample 1 filters, rinses and trap (large table)
Table 7.6: Results from induction furnace (individual congeners sample 1 filters, rinses and trap)
