PART 1. Categories of substances and preparations not specifically named in Part II | |
Category | Threshold Quantity (metric tons) |
1. Flammable2 | 50,000 |
2a. Highly flammable3(a)and (b) | 200 |
2b. Highly flammable3(c) | 50,000 |
3. Extremely flammable4 | 50 |
4. Toxic5 | 200 |
5. Very toxic6 | 20 |
6. Oxidizing7 | 200 |
7a. Explosive, where the substance, preparation or article falls under Division 1.4 of the GHS criteria8 | 200 |
7b. Explosive, where the substance, preparation or article falls under Division 1.1, 1.2, 1.3, 1.5 or 1.6 of the GHS criteria8 | 50 |
8a. Dangerous for the environment – “Toxic to aquatic organisms”9 | 500 |
8b. Dangerous to the environment – “Very toxic to aquatic organisms”10 | 200 |
Part II. Named substances | |
Substance | Threshold Quantity (metric tons) |
1a. Ammonium nitrate11 | 10,000 |
1b. Ammonium nitrate12 | 5,000 |
1c. Ammonium nitrate13 | 2,500 |
1d. Ammonium nitrate14 | 50 |
2a. Potassium nitrate15 | 10,000 |
2b. Potassium nitrate16 | 5,000 |
3. Chlorine | 25 |
4. Ethylene oxide | 50 |
5. Hydrogen | 50 |
6. Toluene diisocyanate | 100 |
7. Sulphur trioxide | 75 |
8. Lead alkyls | 50 |
9. Phosgene | 0.75 |
10. Methyl isocyanate | 0.15 |
11. Liquefied extremely flammable gases (including LPG) and natural gas | 200 |
12. Petroleum products: gasolines and naphthas; kerosenes (including jet fuels);gas oils (including diesel fuels, home heating oils and gas oil blending streams) | 25,000 |
TABLE 1 | ||
LD50(oral)(1)mg/kg body weight25 < LD50 < 200 | LD50(dermal)(2)mg/kg body weight50 < LD50 < 400 | LC50(3)mg/l (inhalation)0.5 < LC50 < 2 |
(1) LD50 oral in rats | ||
(2) LD50 dermal in rats or rabbits | ||
(3) LC50 by inhalation (four hours) in rats |
TABLE 2 |
Discriminating dose mg/kg body weight = 5 |
where the acute oral toxicity in animals of the substance has been determined using the fixed-dose procedure. |
TABLE 3 | ||
LD50(oral)(1)mg/kg body weightLD50 < 25 | LD50(dermal)(2)mg/kg body weightLD50 < 50 | LC50(3)mg/l (inhalation)LC50 < 0.5 |
(1) LD50 oral in rats | ||
(2) LD50 dermal in rats or rabbits | ||
(3) LC50 by inhalation (four hours) in rats |
TABLE 4 |
Discriminating dose mg/kg body weight < 5 |
where the acute oral toxicity in animals of the substance has been determined using the fixed-dose procedure. |
Purposes of analysis | Matters to be considred : |
Emergencyplanning under article 8 | (1) The quantities and properties of hazardous substances on the site, |
Decision-making on siting under Article 7 Information to the public under Article 9 Preventive measures under Article 6 | (2)Brief descriptive scenarios of a representative sample of industrial accidents possibly arising from the hazardous activity, including an indication of the likehood of each, |
(3) For each scenario, (a) The approximate quantity of a release, (b)The extent and severity of the resulting consequenses both for people and for the non-human environment in favourable and unfavourable conditions, including the extent of reulting hazard zones, (c)The time-scale within which the industrial accident could develop from the initiating event, (d) Any action which could be taken to minimize the likelihoood of escalation | |
(4) The size and distribution of the population in the vicinity, including any large concentrations of people potentially in the hazard zone (5) The age, mobility and susceptibility of that population. | |
In addition to items (1) to (5) above: (6) The severity of the harm inflicted on people and the environment, depending on the nature and circumstances of the release; (7) The distance from the location of the hazardous activity at which harmful effects on people and the environment may reasonably occur in the event of an industrial accident (8) The same information not only for the present situation but also for planned or reasonably foreseable future developments | |
In addition to items (1) to (4) above; (9) The people who may be affectd by an industrial accident. | |
In addition to items (1) to (9) above, more detailed versions of the descriptions and assessments set out in items (1) to (3) will be needed for preventive measures. In addition to those descriptions and assessments, the following matters should also be covered; (10) The conditions and quantities in which hazardous materials are handled; (11) A list of the scenarios for the types of industrial accidents with serious effects, to include examples covering the full range of incident size and the possibility of effects from adjacent activities; (12) For each scenario, a description of the events which could initiate an industrial accident and the steps whereby it could escalate; (13) An assessment, at least in general terms, of the likelihood of each step occurring, taking into account the arrangements in (14), (14) A description of the preventive measures in terms of both equipment and procedures designed to minimize the likelihood of each step occurring; (15) An assessment of the effects that deviations from normal operating conditions could have, and the consequen arrangements for safe shut-down of the hazardous activity or any part thereof in an emergency, and of the need for staff training to ensure that potentially serious deviations are recognized at an early stage and appropriate action taken; (16) An assessment of the extent to which modifications, repair work and maintenance work on the hazardous activity could place the control measures at risk, and the consequent arrangements to ensure that control is maintained. |