Table 14.1—Hazardous chemicals (other than lead) requiring health monitoring
| Item | Hazardous chemical | Type of health monitoring |
| 1 | Acrylonitrile | Demographic, medical and occupational history<br>Records of personal exposure Physical examination |
| 2 | Arsenic (inorganic) | Demographic, medical and occupational history<br>Records of personal exposure |
| | | Physical examination with emphasis on the peripheral nervous system and skin<br>Urinary inorganic arsenic |
| 3 | Benzene | Demographic, medical and occupational history<br>Records of personal exposure |
| | | Physical examination<br>Baseline blood sample for haematological profile |
| 4 | Cadmium | Demographic, medical and occupational history<br>Records of personal exposure |
| | | Physical examination with emphasis on the respiratory system<br>Standard respiratory questionnaire to be completed |
| | | Standardised respiratory function tests including for example, FEV1, FVC and FEV1/FVC<br>Urinary cadmium and β2‑microglobulin |
| | | Health advice, including counselling on the effect of smoking on cadmium exposure |
| 5 | Chromium (inorganic) | Demographic, medical and occupational history<br>Physical examination with emphasis on the respiratory system and skin |
| | | Weekly skin inspection of hands and forearms by a competent person |
| 6 | Creosote | Demographic, medical and occupational history<br>Health advice, including recognition of photosensitivity and skin changes |
| | | Physical examination with emphasis on the neurological system and skin, noting any abnormal lesions and evidence of skin sensitisation |
| | | Records of personal exposure, including photosensitivity |
| 7 | Crystalline silica | Demographic, medical and occupational history<br>Records of personal exposure |
| | | Standardised respiratory questionnaire to be completed |
| | | Standardised respiratory function test, for example, FEV1, FVC and FEV1/FVC<br>Chest X‑ray full size PA view |
| 8 | Isocyanates | Demographic, medical and occupational history<br>Completion of a standardised respiratory questionnaire |
| | | Physical examination of the respiratory system and skin<br>Standardised respiratory function tests, for example, FEV1, FVC and FEV1/FVC |
| 9 | Mercury (inorganic) | Demographic, medical and occupational history<br>Physical examination with emphasis on dermatological, gastrointestinal, neurological and renal systems<br>Urinary inorganic mercury |
| 10 | 4,4’ Methylene bis (2‑chloroaniline) (MOCA) | Demographic, medical and occupational history<br>Physical examination Urinary total MOCA Dipstick analysis of urine for haematuria<br>Urine cytology |
| 11 | Organophosphate pesticides | Demographic, medical and occupational history including pattern of use<br>Physical examination |
| | | Baseline estimation of red cell and plasma cholinesterase activity levels by the Ellman or equivalent method |
| | | Estimation of red cell and plasma cholinesterase activity towards the end of the working day on which organophosphate pesticides have been used |
| 12 | Pentachlorophenol (PCP) | Demographic, medical and occupational history<br>Records of personal exposure |
| | | Physical examination with emphasis on the skin, noting any abnormal lesions or effects of irritancy |
| | | Urinary total pentachlorophenol<br>Dipstick urinalysis for haematuria and proteinuria |
| 13 | Polycyclic aromatic hydrocarbons (PAH) | Demographic, medical and occupational history<br>Physical examination |
| | | Records of personal exposure, including photosensitivity<br>Health advice, including recognition of photosensitivity and skin changes |
| 14 | Thallium | Demographic, medical and occupational history<br>Physical examination<br>Urinary thallium |
| 15 | Vinyl chloride | Demographic, medical and occupational history<br>Physical examination<br>Records of personal exposure |
Table 14.2—Lead requiring health monitoring
| Item | Lead | Type of health monitoring |
| 1 | Lead (inorganic) | Demographic, medical and occupational history<br>Physical examination<br>Biological monitoring |
Schedule 15—Hazardous chemicals at major hazard facilities (and their threshold quantity)
(Chapter 9)
1 Definitions
In this Schedule:
Class has the same meaning as in the ADG Code.
Division has the same meaning as in the ADG Code.
Packing Group has the same meaning as in the ADG Code.
subsidiary risk has the same meaning as in the ADG Code.
2 Relevant hazardous chemicals
The hazardous chemicals that characterise a workplace as a facility for the purposes of these Regulations are the chemicals specifically referred to in table 15.1 and chemicals that belong to the types, classes and categories referred to in table 15.2.
3 Threshold quantity of one hazardous chemical
(1) In relation to each hazardous chemical referred to in clause 2, column 3 of Tables 15.1 and 15.2 provides a quantity that is described as the ‘threshold quantity’ of that chemical.
(2) If a hazardous chemical is referred to in table 15.1, the threshold quantity of the chemical is that described in table 15.1, whether or not the chemical also belongs to a type, class or category referred to in table 15.2.
(3) If a hazardous chemical is not referred to in table 15.1, and the chemical belongs to a type, class or category referred to in table 15.2, the threshold quantity of that chemical is that of the type, class or category to which it belongs.
(4) If a hazardous chemical is not referred to in table 15.1, and the chemical appears to belong to more than one of the types, classes or categories referred to in table 15.2, the threshold quantity of that chemical is that of the relevant type, class or category which has the lower or lowest threshold quantity.
4 Threshold quantity of more than one hazardous chemical
If there is more than one hazardous chemical, a threshold quantity of chemicals exists where, if a number of chemicals are present, the result of the following aggregation formula exceeds 1:
Start formula start fraction q start subscript x end subscript over Q start subscript x end subscript end fraction plus start fraction q start subscript y end subscript over Q start subscript y end subscript end fraction plus open square bracket ellipsis close square bracket plus start fraction q start subscript n end subscript over Q start subscript n end subscript end fraction end formula
where:
(a) x, y, [....] and n are the hazardous chemicals present or likely to be present;
(b) qx, qy, [....] and qn is the total quantity of hazardous chemicals x, y, [....] and n present or likely to be present, other than:
(i) a hazardous chemical that is present or likely to be present in an isolated quantity less than 2% of its threshold quantity;
(ii) hazardous chemicals that are solely the subject of intermediate temporary storage, while in transit by road or rail (unless it is reasonably foreseeable that, despite the transitory nature of the storage, hazardous chemicals are or are likely to be present frequently or in significant quantities);
(c) Qx, Qy, [....] and Qn is the individual threshold quantity for each hazardous chemical x, y, [....] and n;
(d) a hazardous chemical is present or likely to be present in an isolated quantity, for subparagraph (b)(i), if its location at the facility is such that it cannot, on its own, act as an initiator of a major incident.
5 How table 15.1 must be used
(1) The UN number listed in table 15.1 against the named hazardous chemical does not restrict the meaning of the name, which also applies to hazardous chemicals that fall outside the UN number.
1 The hazardous chemicals are too dangerous to be transported.
2 The hazardous chemicals are part of mixtures covered by a different UN number.
(2) Any hazardous chemicals that are covered by the listed UN numbers must be included in the quantity of the chemical named.
6 How table 15.2 must be used
(1) The quantities specified for explosives in table 15.2 relate to the weight of explosive exclusive of packagings, casings and other nonexplosive components.
(2) If explosives of different hazard divisions are present in the same area or storage, all of the explosives must, before table 15.2 is applied, be classified in accordance with the following table:
| Item | Hazardous chemical | Description | Threshold quantity (tonnes) |
| 1 | Explosive materials | Explosive of Division 1.1A | 10 |
| | | All other explosives of Division 1.1 | 50 |
| | | Explosive of Division 1.2 | 200 |
| | | Explosive of Division 1.3 | 200 |
| 2 | Compressed and liquefied gases | Compressed or liquefied gases of Division 2.1 or Subsidiary Risk 2.1 | 200 |
| | | Liquefied gases of Subsidiary Risk 5 | 200 |
| | | Compressed or liquefied gases that meet the criteria for Very Toxic in table 15.3 | 20 |
| | | Compressed or liquefied gases that meet the criteria for Toxic in table 15.3 | 200 |
| 3 | Flammable materials | Liquids that meet the criteria for Class 3 Packing Group I Materials (except for crude oil in remote locations) | 200 |
| | | Crude oil in remote locations that meet the criteria for Class 3 Packing Group I | 2000 |
| | | Liquids that meet the criteria for Class 3 Packing Group II or III | 50 000 |
| | | Liquids with flash points <61° C kept above their boiling points at ambient conditions | 200 |
| | | Materials that meet the criteria for Division 4.1 Packing Group I | 200 |
| | | Spontaneously combustible materials that meet the criteria for Division 4.2 Packing Group I or II | 200 |
| | | Materials that liberate flammable gases or react violently on contact with water which meet the criteria for Division 4.3 Packing Group I or II | 200 |
| | | Materials that belong to Classes 3 or 8 Packing Group I or II which have Hazchem codes of 4WE (materials that react violently with water) | 500 |
| 4 | Oxidising materials | Oxidising material listed in Appendix A to the ADG Code | 50 |
| | | Oxidising materials that meet the criteria for Division 5.1 Packing Group I or II | 200 |
| 5 | Peroxides | Peroxides that are listed in Appendix A to the ADG Code | 50 |
| | | Organic Peroxides that meet the criteria for Division 5.2 | 200 |
| 6 | Toxic solids and liquids | Materials that meet the criteria for Very Toxic in table 15.3 except materials that are classified as Infectious Substances (Division 6.2) or as Radioactive (Class 7) | 20 |
| | | Materials that meet the criteria for Toxic in table 15.3 | 200 |