Western Australian Repealed Regulations

This legislation has been repealed.

EXPLOSIVES AND DANGEROUS GOODS (DANGEROUS GOODS HANDLING AND STORAGE) REGULATIONS 1992 - REG 4.7

4.7 .         Separation distances and segregation distances

        (1)         Subject to these regulations, the separation distances to be provided between — 

            (a)         dangerous goods on licensed premises and the boundaries of those premises and other buildings or facilities in the same premises are the separation distances prescribed in Table 2;

            (b)         dangerous goods in any premises and protected works outside those premises are the separation distances prescribed in Table 3,

                according to the packing group of the dangerous goods in question.

        (2)         Subject to these regulations, separation distances and segregation distances prescribed under these regulations shall be measured in a horizontal plane.

        (3)         Where a screen wall conforms to the requirements of these regulations the separation distances and segregation distances prescribed under these regulations in relation to the storage of the dangerous goods in question may be calculated in a horizontal distance around the screen wall.

        (4)         Where alterations occur on either the existing or adjoining premises which result in a breach of these regulations the Chief Inspector may give such directions as are necessary to ensure that the premises conform with these regulations.

        (5)         For the purposes of this regulation — 

            (a)         dangerous goods of Classes 2.1 and 2.3 shall be regarded as being of Packing Group I; and

            (b)         dangerous goods of Class 2.2 shall be regarded as being of Packing Group II.

Table 2

Separation Distances — Boundaries and facilities on premises

Part 1

Package Depots

Separation Distances #

Separation required	Packing Group I	Packing Group II	Packing Group III
Office buildings, manufacturing areas, workshops or amenities blocks on the same premises	Distance required by Table 3 but need not exceed 15 m	Distance required by Table 3 but need not exceed 15 m	Distance required by Table 3 but need not exceed 7.5 m
Boundary of the premises or public places where —
(i)         Packages are filled	15 m	8 m	3 m
(ii)         Packages are opened;	10 m	5 m	1 m
(iii)         Packages are stored, sealed	3 m	3 m	Not restricted

Part 2

Bulk Depots

Separation Distances #

Separation required	Packing Groups I and II	Packing Group III
Filling points*, platforms or package storage	Diameter of the tank or 15 m, whichever is the lesser, but not less than 6 m	Diameter of the tank or 7.5 m, whichever is the lesser, but not less than 3 m
Office buildings, warehouses, manufacturing areas, workshops or amenities blocks on the same premises	Distance required by Table 3, but need not exceed 15 m	Distance required by Table 3, but need not exceed 7.5 m
Boundary of the premises	Diameter of the tank or 15 m, whichever is the lesser, but not less than 6 m	Diameter of the tank or 7.5 m, whichever is the lesser, but not less than 3 m

*         Points for filling packages, drums or tank vehicles and not the filling point into the storage.

#         Refer to the Code or approved Standard for alternative distances when vapour barriers are used.

Table 3

Separation distances for package depots and above ground bulk depots to protected works outside the premises

Column 1	Column 2
Minimum distance         metres	Amount x 10 -3 (see notes 2 and 3)
(see note 1)	A	B	C
Packing Group	I	II	III
Unrestricted	0.1	0.5	2.5
3	1	4	10
4	2	8	20
5	4	16	40
6	7	28	70
7	10	40	100
8	14	56	140
9	20	80	200
10	26	104	260
11	34	136	340
12	42	168	420
13	52	208	520
14	64	256	640
15	77	308	770
20	170	680	1 700
25	310	1 240	3 100
30	500	2 000	or over
35	750	3 000
40	1 100	or over
45	1 500
50	2 000 or over

Notes :         1.         For distances above 3 m the distances applicable for any intermediate amount may be obtained by interpolation.

        2.         Amount in respect of bulk depots refers to individual bulk container capacity or quantity.

        3.         Where dangerous goods which are liquid are stored within a bulk depot, the distance from the top inside of the bund to Protected Works shall not be less than one half of the distance specified in the Table or 15 m whichever is the lesser.

        (6)         Where dangerous goods of more than one packing group are stored on any premises the separation distances to be provided for the purposes of this regulation are the separation distances that apply in accordance with the following formula — 

                Where — 

S         represents the separation distance to be provided;

PG I         represents the amount of dangerous goods of Packing Group I stored in the depot;

TDG         represents the total amount of dangerous goods stored in the depot;

S ₁         represents the separation distance under Table 3 for the total amount of dangerous goods stored assuming the total is of Packing Group I;

PG II         represents the amount of dangerous goods of Packing Group II stored in the depot;

S ₂         represents the separation distance under Table 3 for the total amount of dangerous goods stored assuming the total is of Packing Group II;

PG III         represents the amount of dangerous goods of Packing Group III stored in the depot;

S ₃         represents the separation distance under Table 3 for the total amount of dangerous goods stored assuming the total is of Packing Group III.

        (7)         Where a separation distance or the amount of dangerous goods is an intermediate number the number to be used for the calculation of the separation distance to be provided for the purposes of these regulations is to be obtained by interpolation.

        [Regulation 4.7 amended in Gazette 8 Sep 1992 p. 4564-5; 8 Jun 1999 p. 2499, 2506 and 2507; 20 Jul 1999 p. 3248.]