Regulation 2
THE SCHEDULESCHEDULE TO BE SUBSTITUTED AS SCHEDULE 1 TO THE PRINCIPAL REGULATIONS
Regulations 2(1), 7(4)and 12(2)
SCHEDULE 1LIST OF SUBSTANCES ASSIGNED TO MAXIMUM EXPOSURE LIMITS
The maximum exposure limits of the dusts included in the list below refer to the total inhalable dust fraction, unless otherwise stated.
| Reference periods | |||||
|---|---|---|---|---|---|
| Long-term maximum exposure limit (8-hour TW A reference period) | Short-term maximum exposure limit (10-minute reference period) | ||||
| Substance | Formula | ppm | mg m−3 | ppm | mg m−3 |
| Acrylamide | CH2=CHCONH2 | — | 0.3 | — | — |
| Acrylonitrile | CH2=CHCN | 2 | 4 | — | — |
| Arsenic & compounds except arsine (as As) | As | — | 0.1 | — | — |
| Benzene | C6H7sub6; | 5 | 15 | — | — |
| Buta-1,3-diene | CH2=CHCH=CH2 | 10 | 22 | — | — |
| 2-Butoxyethanol | CH4H9OCH2CH2OH | 25 | 120 | — | — |
| Cadmium & cadmium compounds, except cadmium oxide fume and cadmium sulphide pigments (as Cd) | Cd | — | 0.05 | — | — |
| Cadmium oxide fume (as Cd) | CdO | — | 0.05 | — | 0.05 |
| Cadmium sulphide pigments (respirable dust as Cd) | CdS | — | 0.04 | — | — |
| Carbon disulphide | CS2 | 10 | 30 | — | — |
| 1,2-Dibromoethane (Ethyl dibromide) | BrCG2CH2Br | 0.5 | 4 | — | — |
| Dichloromethane | CH2Cl2 | 100 | 350 | — | — |
| 2,2'-Dichloro-4,4'-methylene dianiline (MbOCA) | CH2(C6H3ClNH2)2 | — | 0.005 | — | — |
| 2-Ethoxyethanol | C2H5OCH2CH2OH | 10 | 37 | — | — |
| 2-Ethoxyethyl acetate | C2H5OCH2CH2OOCCH3 | 10 | 54 | — | — |
| Ethylene oxide | CH2CH2O | 5 | 10 | — | — |
| Formaldehyde | HCHO | 2 | 2.5 | 2 | 2.5 |
| Hydrogen cyanide | HCN | — | — | 10 | 10 |
| Isocyanates, all (as-NCO) | — | 0.02 | — | 0.07 | |
| (1)Man-made mineral fibre | — | 5 | — | — | |
| 2-Methoxyethanol | CH3OCH2CH2OH | 5 | 16 | — | — |
| 2-Methoxyethyl acetate | CH3COOCH2CH2OCH3 | 5 | 24 | — | — |
| Rubber process dust | — | 8 | — | — | |
| (2)Rubber fume | — | 0.6 | — | — | |
| Styrene | C6H5CH=CH2 | 100 | 420 | 250 | 1050 |
| 1,1,1-Trichloroethane | CH3CCl3 | 350 | 1900 | 450 | 2450 |
| Trichloroethylene | CCl2=CHCl | 100 | 535 | 150 | 802 |
| (3)Vinyl chloride | CH2=CHCl | 7 | — | — | — |
| Vinylidene chloride | CH2=CCl2 | 10 | 40 | — | — |
| Wood dust (hard wood) | — | 5 | — | — | |
(1)
In addition to the maximum exposure limit specified above man-made mineral fibre is also subject to a maximum exposure limit of 2 fibres ml−1, 8-hour TWA, when measured or calculated by a method approved by the Health and Safety Commission.
(2)
Limit relates to cyclohexane soluble material.
(3)
In addition to the maximum exposure limit specified above vinyl chloride is also subject to an overriding annual maximum exposure limit of 3 ppm