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5 Site C

5.1 Introduction

On 6 March 2003, sampling was carried out at Site C. 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 after the baghouse in a vertical section of duct and at least three duct diameters from any disturbance to the flow. The sampling point was accessed from scaffolding.

Details of the sampling date, times and stack dimensions are:

  • Sample date and time:
    • Sample 1: 6 March 2003, 3:40-16:42
    • Sample 2: 6 March 2003, 17:23-20:23
  • Stack dimensions: 0.91 x 0.9 metre rectangular duct.

5.2 Results

Table 5.1: Particulate emissions from induction furnace

Sample Sample mass
(g)		 Particulate emissions
(mg/m3, dry, 0°C,
1 Atm)		 (kg/h)

1

0.001

<0.6

<0.02

2

0.001

<0.6

<0.02

Average

  

<0.6

<0.02

Note: The sample mass was less than the limit of detection.

Table 5.2: Average stack gas conditions at the induction furnace sampling point

View average stack gas conditions at the induction furnace sampling point (large table)

Table 5.3: 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

1.6490

1.6434

100%

2

1.6542

1.5787

105%

All samples are within the required isokinicity range of 100 ± 10%.

Table 5.4: Average combustion gas results

CO
(mg/m3)		 SO2
(mg/m3)		 NO
(mg/m3)		 O2
(%)		 NO2
(mg/m3)

11.6

<25

8.3

21.1

1.4

Table 5.5: Summary results from induction furnace sample 1 filter, rinses and trap

View summary results from induction furnace sample 1 filter, rinses and trap (large table)

Table 5.6: Results from induction furnace (individual congeners sample 1 filter, rinses and trap)

View results from induction furnace (individual congeners sample 1 filter, rinses and trap) (large table)

Table 5.7: Summary results from induction furnace sample 2 filter, rinses and trap

View summary results from induction furnace sample 2 filter, rinses and trap (large table)

Table 5.8: Results from induction furnace (individual congeners sample 2 filter, rinses and trap)

View results from induction furnace (individual congeners sample 2 filter, rinses and trap) (large table)


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