Table 1.
Job group exposure assignment procedure.
| Job group | General exposure status |
% Resp | Fume-analog job group | Procedure |
|---|---|---|---|---|
| Furnace team | Primarily Fume | 13 | Assign fume concentration based on estimated respirable | |
| Furnace, laborer | 13 | Mn for Job. | ||
| Furnace loader opr | 13 | Assign dust concentration=0 | ||
| Furnace, sampler | 13 | |||
| Instrument. tech | 13 | |||
| Furnace, gas system | 13 | |||
| Furnace, Kress opr | 13 | |||
| Control rm opr | Dust and Fume | 19 | Furnace team | Assign fume concentration based on estimated respirable |
| Product crushing, other | 12 | Furnace team | Mn in Fume-analog Job. | |
| Electricians | 12 | Furnace team | Derive dust concentration as difference between estimated respirable Mn for Job minus assigned fume concentration. If assigned fume conc. >(estimated respirable Mn for Job)/2, then set both dust and fume=(estimated respirable Mn for Job)/2 |
|
| Welders | 12 | Furnace team | ||
| Fitters | 12 | Furnace team | ||
| Product crushing, hopper | 12 | Furnace team | ||
| Equip opr, raw matl | Primarily Dust | 22 | Furnace loader opr | |
| Yard laborer | 22 | Furnace loader opr | ||
| Janitor | 19 | General equip. maint., head | ||
| Sinter plant, opr | 5 | Furnace loader opr | ||
| Sinter plant, laborer, asst opr | 5 | Furnace loader opr | ||
| Sinter plant, foreman | 5 | Furnace loader opr | ||
| Product crushing, brakeman | 12 | Furnace loader opr | ||
| Maintenance, dust collector | 11 | Furnace loader opr | ||
| Yard, truck/machine | 11 | Furnace loader opr | ||
| Maintenance shop | Ambient | 21 | Assign fume concentration based on estimated respirable | |
| Silicon plant | 10 | Mn for Job. | ||
| General equip. maint., head | 21 | Assign dust concentration=0 | ||
| Maintenance, supvr | 21 |
Fume analog: similar job group with only fume exposure; used to assign fume level to jobs with dust exposure.