Total inhalable nickel dust in air measurements from personal samples (mg Ni/m3): Clydach plant
| Plant | 1980s | 1990s | Predominant species* | Area of plant† | ||
|---|---|---|---|---|---|---|
| Mean | n | Mean | n | |||
| *Little quantitative nickel speciation data are available. | ||||||
| †See text for definition of six categories of work. | ||||||
| ‡Includes central engineering workshop in the 1980s and area 1 and area 2 engineering in the 1990s. | ||||||
| ¶Excludes one measurement of 10.00 mg/m3. | ||||||
| §Includes powder warehouse and shipping. | ||||||
| NiSO4 | 0.05 | 30 | 0.04 | 103 | Soluble, metallic | 3 |
| NiCl2 | 0.17 | 122 | 0.30 | 51 | Soluble, metallic | 3 |
| Wet treatment | 0.19 | 202 | n/a | – | Metallic, soluble, sulphide | 4 |
| Pellet plant | 0.09 | 222 | 0.07 | 189 | Metallic | 2 |
| Eng. & tech. services‡ | 0.04 | 20 | 0.11 | 169 | Mixed | 6 |
| Powder plant | 0.57¶ | 403 | 0.37 | 365 | Metallic | 2 |
| Pellet handling§ | 0.13 | 115 | 0.09 | 192 | Metallic | 2 |
| Kiln | 0.19 | 445 | 0.24 | 565 | Oxidic, metallic | 1 |
| Effluent | 0.14 | 28 | 0.19 | 62 | Soluble, metallic | 3 |
| Bulk handling | 0.27 | 3 | 0.12 | 13 | Oxidic, metallic | 1 |
| Fluid bed roaster | 0.49 | 164 | n/a | – | Mixed | 1 |
| Calciner | 0.48 | 27 | n/a | – | Mixed | 1 |