Table 3.
Whole-body vibration exposures evaluated by vibration dose values (VDV) for axes x, y, and z, and vector summations for haul truck drivers at four mines/quarries.a
| Quarry | Subject # | Day No. | Total sampling time (min) | A(8) VDV X-axis (m/s1.75) | A(8) VDV Y-axis (m/s1.75) | A(8) VDV Z-axis (m/s1.75) | A(8) VDV Vector sum (m/s1.75) | ISO/ANSI 8-hr shift equivalent HGCZ dominant axis | EUGPG 8-hr shift equivalent HGCZ dominant axis |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 501 | 6.7 | 5.4 | 16 | 20 | Within | Within |
| 2 | 2 | 1 | 369 | 4.7 | 4.9 | 6.4 | 11 | Below | Below |
| 2 | 245 | 4.1 | 5.0 | 5.6 | 11 | Below | Below | ||
| 3 | 3 | 1 | 356 | 3.2 | 3.3 | 4.2 | 8 | Below | Below |
| 2 | 355 | 3.0 | 2.9 | 4.0 | 7.1 | Below | Below | ||
| 1 | 4 | 1 | 478 | 5.4 | 4.8 | 11 | 15 | Within | Within |
| 2 | 495 | 21 | 24 | 23 | 50 | Above | Above | ||
| 5 | 1 | 468 | 12 | 12 | 13 | 27 | Within | Within | |
| 2 | 489 | 81 | 4.3 | 5.4 | 114 | Above | Above | ||
| 4 | 6 | 1 | 368 | 3.6 | 2.5 | 3.7 | 7.2 | Below | Below |
| 2 | 397 | 3.4 | 2.6 | 3.5 | 6.9 | Below | Below | ||
| 7 | 1 | 358 | 2.9 | 2.4 | 3.5 | 6.3 | Below | Below | |
| 2 | 319 | 3.3 | 2.8 | 4.2 | 7.4 | Below | Below |
a
Levels were normalized to full 8-hr shift equivalent levels to compare with the ISO health guidance caution zone (HGCZ) action and limit boundary level conditions of ISO2631-1 and the European Union Directive 2002/44/EC presented in the European Union good practices guide (EUGPG).