OCCUPATIONAL HEALTH AND SAFETY (SAFETY STANDARDS) REGULATIONS 1994 - SCHEDULE 9 Materials at major hazard facilities and potential major hazard facilities -- threshold quantities

Commonwealth Consolidated Regulations

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OCCUPATIONAL HEALTH AND SAFETY (SAFETY STANDARDS) REGULATIONS 1994 - SCHEDULE 9

Materials at major hazard facilities and potential major hazard facilities -- threshold quantities

Part 1 Classification of explosive materials

1 Determining Subclass of explosive materials stored with other explosive materials

For the purpose of column 2 of items 44 to 47 of Part 2, if explosive materials of different hazard divisions are present in the same area of a major hazard facility or a potential major hazard facility, the Subclass of each explosive material present must be determined in accordance with the following table and the notes to the table.

HAZARD DIVISION	1.1	1.2	1.3	1.4	1.5	1.6
1.1	1.1	1.1	1.1	1.1	1.1	1.1
1.2	1.1	1.2	1.1	1.2	1.1	1.2
1.3	1.1	1.1	1.3	1.3	1.1	1.3
1.4	1.1	1.2	1.3	1.4	1.5	1.6
1.5	1.1	1.1	1.1	1.5	1.5	1.5
1.6	1.1	1.2	1.3	1.6	1.5	1.6

Notes to the table

Note 1 If explosive materials of more than 2 Divisions are present, any 2 of those Divisions are to be considered in determining a resultant Division, which must then be considered with the next Division, and so on until all Divisions present have been considered.

Note 2 If 2 or more explosive materials of Division 1.6 are present, the subclass of those materials may be determined to be Division 1.6 only if it is proved by testing or analogy that there is no additional risk of sympathetic detonation between the materials. Otherwise, the subclass of those materials must be determined to be Division 1.1.

Part 2 Threshold quantities

Item	Material	UN number		Threshold quantity (tonnes)
*General*
1	Acetone cyanohydrin	1541		20
2	Acetylene	1001		50
3	Acrolein	1092		200
4	Acrylonitrile	1093		200
5	Allyl alcohol	1098		20
6	Allylamine	2334		200
7	Ammonia -- anhydrous, liquefied or ammonia solutions, relative density less than 0.880 at 15 ° C in water, with more than 50% ammonia	1005		200
8	Ammonium nitrate fertilisers	2067 2068 2069 2070		5 000
9	Ammonium nitrate, with no more than 0.2% combustible substances, including any organic substance calculated as carbon, to the exclusion of any other added substance	1942		2 500
10	Arsenic pentoxide, Arsenic (V) acid and other salts	1559		10
11	Arsenic trioxide, Arsenious (III) acid and other salts	1561		0.10
12	Arsine	2188		0.01
13	Bromine or Bromine solutions	1744		100
14	Carbon disulfide	1131		200
15	Chlorine	1017		25
16	Dioxins			0.10
17	Ethyl nitrate			50
18	Ethylene dibromide	1605		50
19	Ethylene oxide	1040		50
20	Ehtyleneimine	1185		50
21	Fluorine	1045		25
22	Formaldehyde	1198 2209		50
23	Hydrofluoric acid solution (greater than 50%)	1790		50
24	Hydrogen	1049		50
25	Hydrogen chloride: (a) anhydrous;	1050		250
	(b) refrigerated liquid	2186		250
26	Hydrogen cyanide	1051 1614		20
27	Hydrogen fluoride	1052		50
28	Hydrogen sulfide	1053		50
29	LP gases	1011 1012 1075 1077 1978		200
30	Methyl bromide	1062		200
31	Methane, or natural gas	1971 1972		200
32	Methyl isocyanate	2480		0.15
33	Oxides of nitrogen, including nitrous oxide, nitrogen dioxide and nitrogen trioxide	1067 1070 1660 1975 2201 2421		50
34	Oxygen	1072 1073		2 000
35	Phosgene	1076		0.75
36	Propyleneimine	1921		200
37	Propylene oxide	1280		50
38	Sodium chlorate, solid	1495		200
39	Sulfuric anhydride (syn. Sulphur trioxide)	1829		75
40	Sulfur dichloride	1828		1
41	Sulfur dioxide, liquefied	1079		200
42	Titanium tetrachloride	1838		500
43	Toluene diisocyanate	2078		200
*Explosive materials*
44	Explosive materials of Subclass 1.1A			10
45	Explosive materials of Subclass 1.1 (other than explosive materials mentioned in item 44)			50
46	Explosive materials of Subclass 1.2			200
47	Explosive materials of Subclass 1.3			200
*Compressed and liquefied gases*
48	Compressed or liquefied gases of: (a) Subclass 2.1; or (b) Subsidiary Risk 2.1			200
49	Liquefied gases of Subsidiary Risk 5			200
50	Compressed or liquefied gases that meet the criteria for Very Toxic in Part 3 of this Schedule			20
51	Compressed or liquefied gases that meet the criteria for Toxic in Part 3 of this Schedule			200
*Flammable materials*
52	Liquids of Class 3 and Packing Group I (other than the materials mentioned in item 53)		200
53	Crude oil, in remote locations, of Class 3 and Packing Group I		2 000
54	Liquids of: (a) Class 3; and (b) either: (i) Packing Group II; or (ii) Packing Group III		50 000
55	Liquids with flashpoints of less than 61 ° C kept above their boiling points at ambient conditions		200
56	Combustible solids of Subclass 4.1 and Packing Group I		200
57	Spontaneously combustible dangerous goods of: (a) Subclass 4.2; and (b) either: (i) Packing Group I; or (ii) Packing Group II		200
58	Dangerous goods that: (a) either: (i) liberate flammable gases; or (ii) react violently on contact with water; and (b) are of: (i) Subclass 4.3; and (ii) either: (A) Packing Group I; or (B) Packing Group II		200
59	Dangerous goods that: (a) have Hazchem codes of 4WE (materials that react violently with water); and (b) are of: (i) either: (A) Class 3; or (B) Class 8; and (ii) either: (A) Packing Group I; or (B) Packing Group II		500
*Oxidising materials*
60	Oxidising material listed in Appendix A to the ADG Code		50
61	Oxidising materials of: (a) Subclass 5.1; and (b) either: (i) Packing Group I; and (ii) Packing Group II		200
*Peroxides*
62	Peroxides listed in Appendix A to the ADG Code		50
63	Organic peroxides of Subclass 5.2		200
*Toxic liquids and solids*
64	Materials that meet the criteria for Very Toxic in Part 3 of this Schedule		20
65	Materials that meet the criteria for Toxic in Part 3 of this Schedule		200

Note 1 The UN number listed for a material specified in an item in this Part is for information only. The listing of the UN number is not intended to restrict the meaning of the name of the material, which may also apply to material that does not come within the scope of the UN number, for example, because the material is too dangerous to transport or is part of a mixture covered by another UN number. However, any material that is covered by the UN number listed in the table must be included in the quantity of the material named.

Note 2 If a material specified in an item in this Part is part of a mixture, the equivalent quantity is to be calculated in accordance with Example 2 in Chapter 16 of the National Code of Practice for the Control of Major Hazard Facilities [NOHSC:2016 (1996)], as in existence at the commencement of this Schedule.

Part 3 Criteria for toxicity

Description

Oral toxicity in rats

LD 50 (mg/kg)

Dermal toxicity in rats or rabbits

LD 50 (mg/kg)

Inhalation toxicity (4 hours in rats)

LC 50 (mg/L)

Very toxic

LD 50 < 5

LD 50 < 40

LC 50 < 0.5

Toxic

5 < LD 50 < 50

40 < LD 50 < 200

0.5 < LC 50 < 2

Part 4 Aggregation formula

For Part 9, the aggregation formula is as follows:

where:

"qx , qy" , ... qn is the total amount of each material ( x , y , ... n ) that is present, that will be present, or that is likely to be present, in an isolated amount that is more than 2% of the threshold quantity for the material.

"Qx , Qy" , ... Qn is the threshold quantity for each material.

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