AIR POLLUTION CONTROL (DUST AND GRIT EMISSION) REGULATIONS

AIR POLLUTION CONTROL (DUST AND GRIT EMISSION) REGULATIONS

AIR POLLUTION CONTROL (DUST AND GRIT EMISSION)
REGULATIONS

ARRANGEMENT OF REGULATIONS
Regulation Page
1. Citation ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... B 2
2. Interpretation ... ... ... ... ... ... ... ... ... ... ... ... ... ... B 2
3. Provision of sampling points ... ... ... ... ... ... ... ... ... ... ... B 2
4. Duties of occupier ... ... ... ... ... ... ... ... ... ... ... ... ... B 3
5. Use of liquid fuel ... ... ... ... ... ... ... ... ... ... ... ... ... B 3
6. Power to take samples of dust and grit and take samples of liquid fuel ... ... B 3
7. Weighing of a sample ... ... ... ... ... ... ... ... ... ... ... ... B 4
8. Division of sample ... ... ... ... ... ... ... ... ... ... ... ... ... B 4
9. Size analysis and viscosity determination of sample ... ... ... ... ... ... B 5
10. Emission of dust or grit ... ... ... ... ... ... ... ... ... ... ... ... B 5

First Schedule. Test Procedures for the Determination of Viscosity ... ... ... ... ... B 5
Second Schedule. Method of Taking Sample of Dust and Grit ... ... ... ... ... ... B 6
Third Schedule. Method of Taking Samples of Dust and Grit for Size Analysis or
Determination of the Relative Proportion of Dust and Grit Burden ... B 6
Fourth Schedule. Method of Taking Sample of Liquid Fuel ... ... ... ... ... ... ... B 6
Fifth Schedule. Method of Determining Temperature of Liquid Fuel ... ... ... ... B 6
Sixth Schedule. Limits of Emission of Dust and Grit ... ... ... ... ... ... ... ... B 7





AIR POLLUTION CONTROL (DUST AND GRIT EMISSION)
REGULATIONS

(Cap. 311, section 43)

[1 January 1974.]

1. These regulations may be cited as the Air Pollution Control
(Dust and Grit Emission) Regulations.

2. In these regulations, unless the context otherwise requires

'dusC means particles of solid matter which will pass through a sieve of
75 micrometre nominal aperture in conformity with BS 410: 1986 of
the British Standards Institution;

'grit' means particles of solid matter which are retained in a sieve of 75
micrometre nominal aperture in conformity with BS 410: 1986 of the
British Standards Institution;

'person using a liquid fuel' includes a person who is the owner or has
possession or control of the burner of the furnace, oven or
industrial plant in which the liquid fuel is used;

'rated capacity' in relation to a burner of any furnace, oven or industrial
plant means the manufacturer's published capacity rating of the
burner or, if such capacity rating is not available, the capacity
rating of the burner as measured by a method approved by the
Authority;

',sample' means a gross sample composed of a number of increments
taken separately or cumulatively;

'viscosity' in relation to a liquid fuel means the strength or resistance
of the liquid fuel offered to shear, such strength or resistance being
determined by the rate of flow of the liquid fuel in given
circumstances and at given temperatures expressed in centistokes
or by any of the test procedures contained in the First Schedule.

3. (1) If it appears to the Authority that a sampling point for the
purpose of taking samples of dust and grit under regulation 6(1)(a)(i) or
(ii) should be provided he may serve a notice in writing upon the
occupier of the premises upon which any furnace, oven, industrial plant,
chimney or flue is situated

virtue of section 36(1) of the Interpretation and General Clauses Ordinance,
continue to have the like effect as if they had been made under the present
Air Pollution Control Ordinance.





(a)requiring him, within 60 days of service of the notice or such
further period as the Authority may grant, to provide and
install at his own cost such, sampling point as may be
specified in the notice; and

(b)specifying the design and position of the sampling point
required to be installed which shall, if provided for the
purpose of regulation 6(1)(a)(i) and in so far as is reasonably
practicable, comply with Reference Method 5 of the United
States of America Environmental Protection Agency for
determination of particulate emission from stationary sources.

(2) If any person fails to comply with the requirements or
specifications of a notice served on him under paragraph (1), he shall be
guilty of an offence and shall be liable on conviction to a fine of $5,000
and, in addition, to a fine of $50 for each day during which it is proved
that the offence has continued:

Provided that if an appeal is made under section 31 of the
Ordinance, no offence shall be deemed to have been committed until
after such appeal is determined or abandoned.

4. (1) The occupier of the premises upon which a sampling point is
installed shall make provision for safe access to the sampling point and
shall maintain the sampling point in good condition.

(2) If any person fails to comply with paragraph (1), he shall be
guilty of an offence and shall be liable on conviction to a fine of $1,000.

5. (1) Except with the written permission of the Authority, no
person shall use or cause or permit to be used in a burner of a furnace,
oven or industrial plant a liquid fuel with a viscosity when delivered to
the burner tip or point of ignition exceeding 30 centistokes or an
equivalent viscosity.

(2) The Authority shall not grant permission under paragraph (1) to
use a liquid fuel unless he is satisfied that the use of that fuel in a burner
of a furnace, oven or industrial plant will not result in the emission of
dark smoke from that furnace, oven or industrial plant.

(3) Any person who contravenes paragraph (1) shall be guilty of an
offence and shall be liable on conviction to a fine of $5,000.

6. (1) The Authority or an authorized officer may-

(a)take a sample of dust and grit emitted from any furnace, oven
or industrial plant, or passing through any chimney or flue, for
the purpose of

(i) determining the concentration of dust and grit emission;
or

(ii) size analysis of the dust and grit emission or
determining the relative proportion of dust and grit burden in
that emission; and





(b)take a sample of liquid fuel from any burner of any furnace,
oven or industrial plant in which liquid fuel is used, for the
purpose of determining the temperature and viscosity of the
liquid fuel at the burner tip or the point of ignition.

(2) The Authority or an authorized officer-

(a)when taking a sample under paragraph (1)(a)(i), shall use the
method set out in the Second Schedule;

(b)when taking a sample under paragraph (1)(a)(ii), shall use the
method set out in the Third Schedule;

(e)when taking a sample under paragraph (1)(b), shall use the
method set out in the Fourth Schedule; and

(d)when determining the temperature of a sample taken under
paragraph (1)(b), shall use the method set out in the Fifth
Schedule.

(3) The occupier of the premises upon which a sample is taken
under paragraph (1)(a) shall be entitled to witness the taking of such
sample.

(4) The person using the liquid fuel shall be entitled to witness the
taking of a sample under paragraph (1)(b) and the determination of the
temperature of such sample.

7. Where the Authority or an authorized officer takes a sample
under regulation 6(1)(a)(ii), he shall weigh the sample as soon as is
reasonably practicable and the occupier of the premises upon which the
sample is taken shall be entitled, upon request made to the Authority or
authorized officer and at such place and time as the Authority may
determine, to witness the weighing of the sample and be informed of the
weight.

8. (1) The Authority or an authorized officer who takes a sample
under regulation 6(1)(a)(ii) or (b) shall divide the sample into three equal
parts, each part to be marked and sealed or fastened up in such manner
as its nature will permit and if the sample taken is dust or grit or both, it
shall not be divided until it has been weighed in accordance with
regulation 7.

(2) When a sample is being divided under paragraph (1)-

(a)the occupier of the premises upon which the sample is taken,
if it is dust or grit or both; or

(b) the person using the liquid fuel, if the sample is liquid fuel,

shall be entitled to witness the division and thereafter, shall be
permitted to select and retain one of the three parts of the sample.

(3) Of the remaining two parts of the sample, the Authority or
officer shall submit one to the Government Chemist for





(a) size analysis, if it is a sample of dust or grit or both; or

(b) determination of viscosity, if it is a sample of liquid fuel,

and shall retain the other.

9. When a sample is submitted to the Government Chemist under
regulation 8(3), the Government Chemist shall

(a) if the sample is dust of grit or both

(i) analyse it for size by such method as he thinks fit;

(ii) issue to the Authority or authorized officer who has
submitted the sample, a certificate specifying the results of the
size analysis of the sample, which certificate shal) be in Form 1
in the Schedule to the Evidence Ordinance; and

(iii) send, free of charge, to the occupier of the premises
upon which the sample was taken, a copy of the certificate
issued under sub-paragraph (ii); and

(b) if the sample is liquid fuel

(i) determine its viscosity in accordance with any of the test
procedures set out in the First Schedule,.

(ii) issue to the Authority or authorized officer who has
submitted the sample, a certificate specifying the result of the
viscosity determination, which certificate shall be in Form 1 in
the Schedule to the Evidence Ordinance; and

(iii) send, free of charge, to the person using the liquid fuel
a copy of the certificate issued under subparagraph (ii).

10. If dust or grit is emitted from any furnace, oven, chimney, flue
or industrial plant in excess of the limits set out in the Sixth Schedule,
the occupier of the premises upon which the furnace, oven, chimney,
flue or industrial plant is situated shall be guilty of an offence and shall
be liable on conviction to a fine of $5,000 and, in addition, to a fine of
$50 for each day during which it is proved that the offence has
continued.

FIRST SCHEDULE [regs. 2 &
9(b).]

TEST PROCEDURES FOR THE DETERMINATION OF
VISCOSITY

The viscosity of any liquid fuel shall be determined in accordance with-

(a)in the case where it is to be expressed in centistokes, the test procedure laid
down under IP 71/84 of the Institute of Petroleum; or

(b)in the case where it is to be expressed in Saybolt Universal seconds, the test
procedure laid down under ASTM D88-81 of the American Society for
Testing Materials; or

(e)in the case where it is to be expressed in Degrees Engler, the test procedure
laid down under BS 434: 1984 of the British Standards Institution.





SECOND SCHEDULE [reg. 6(2)(a).]

METHOD OF TAKING SAMPLE OF DUST
AND GRIT

1.Any sample required to determine the grit or dust burden from any furnace,
oven, chimney, flue or industrial plant shall be taken when the appliance or
plant is operating under normal running conditions and the period during which
the sample is taken may include any period when customary peak loads are
experienced.

2.Not less than 8 increments comprising a sample are to be taken from points
uniformly distributed across the section of the (Zhimney or flue.

3. The sample is to be taken in accordance with the isokinetic principle.

4.The sample is to be collected in compliance with Reference Method 5 of the
United States of America Environmental Protection Agency for determination
of particulate emission from stationary sources.

5.When 8 or more increments are taken from sampling points at any one cross
section of the chimney or flue, the combined increments are to be placed
together in one container.

THIRD SCHEDULE [reg.
6(2)(b).]

METHOD OF TAKING SAMPLES OF DUST AND GRIT FOR SIZE
ANALYSIS OR

DETERMINATION OF THE RELATIVE PROPORTION OF DUST AND
GRIT BURDEN

1 Any sample required for size analysis or determination of the relative
proportion of dust and grit burden from any furnace, oven, chimney, flue or
industrial plant shall be taken when the appliance or plant is operating under
normal running conditions and the period during which the sample is taken
may include any period when customary peak loads are experienced.

2. The sample is to be taken in accordance with the isokinetic: principle.

3.Not less than 2 increments comprising a sample are to be taken from points
across the section of a chimney or flue where the velocity of the dust and grit
emission is substantially equal.

4.The sample is to be collected in an inertial separator and followed by an
efficient filter to retain the finer particles of dust and grit.

FOURTH SCHEDULE [reg.
6(2)(c).]

METHOD OF TAKING SAMPLE OF LIQUID
FUEL

1.Before any sample of liquid fuel is taken, a quantity of liquid fuel not less than
the fuel consumption of the burner at its full rated capacity for 5 minutes shall
be run off or consumed.

2. A sample may be taken-

(a)at the burner tip or point of ignition with the furnace, oven or industrial
plant not in operation, but with the preheater in commission and fully
warmed up; or

(b)when the furnace, oven or industrial plant is in operation, from a suitable






test draw-off cock situated at the fuel supply line as close as practicable to
the point of ignition.

FIFTH SCHEDULE [reg.
6(2)(d).]

METHOD OF DETERMINING TEMPERATURE OF
LIQUID FUEL

The temperature of liquid fuel at the burner tip or point of ignition may be
determined by

(a) a mercury-in-glass bulb thermometer;

(b) a resistance bulb thermometer; or

(c) any other means approved by the Authority.





2.In the event of dispute, it shall be sufficient to prove accuracy of
measurement to a tolerance of not more than one degree Centigrade

(a) in either direction at the operative temperature; or

(b)by reference to 2 fixed temperatures such as the temperature of melting
ice procured from distilled water and the temperature of boiling distilled
water corrected for atmospheric pressure.

SIXTH SCHEUDLE [reg. 10.]

LIMITS OF EmISSION OF DuST AND GRIT

1.If a furnace, oven or industrial plant is burning solid fuel at a rate not exceeding
1000 kg per hour, or if any boiler has a maximum continuous rating not
exceeding 7 600 kg of steam per hour

(a)the total grit burden shall not exceed 33% of the total dust and grit burden;
and

(b)the total emission of dust and grit shall not exceed 1.0% of the total fuel
fired.

2.If a furnace, oven or industrial plant is burning solid fuel at a rate exceeding
1000 kg per hour, or if any boiler has a maximum continuous rating exceeding
7 600 kg of steam per hour

(a)the total grit burden shall not exceed 20% of the total dust and grit burden;
and

(b)the total emission of dust and grit shall not exceed 0.5% of the total fuel
fired.

3.A furnace, oven or industrial plant shall not emit during each hour when the
furnace, oven or industrial plant is consuming liquid fuel at the rate specified in
the first column of the Table, dust or grit in excess of the percentage of the
total fuel fired specified opposite thereto in the second column of that Table.

4.If more than one furnace, oven or industrial plant is connected to a common
chimney or flue the total permitted limit of dust and grit burden shall not
exceed the sum of the permitted limits for each furnace, oven or industrial
plant so connected.

L.N. 190/73. L.N. 37/75. L.N. 203/79. 17 of 1983. L.N. 262/87. Citation. 17 of 1983, s. 50. L.N. 262/87. Interpretation. L.N. 262/87. L.N. 262/87. L.N. 262/87. 17 of 1983, s. 50. L.N. 262/87. First Schedule. Provision of sampling points. 17 of 1983, s. 50. L.N. 262/87. L.N. 262/87. Duties of occupier. Use of liquid fuel. 17 of 1983, s. 50. L.N. 262/87. Power to take samples of dust and grit and take samples of liquid fuel. 17 of 1983, s. 50. L.N. 262/87. L.N. 262/87. Second Schedule. L.N. 262/87. Third Schedule. Fourth Schedule. Fifth Schedule. L.N. 262/87. Weighting of a sample. L.N. 262/87. Division of sample. 17 of 1983, s. 50. L.N. 262/87. Size analysis and viscosity determination of sample. 17 of 1983, s. 50. (Cap. 8.) First Schedule. (Cap. 8.) Emission of dust or grit. L.N. 262/87. Sixth Schedule. L.N. 262/87. L.N. 262/87. L.N. 262/87. L.N. 262/87. 17 of 1983, s. 50. L.N. 262/87. L.N. 262/87.

L.N. 190/73. L.N. 37/75. L.N. 203/79. 17 of 1983. L.N. 262/87. Citation. 17 of 1983, s. 50. L.N. 262/87. Interpretation. L.N. 262/87. L.N. 262/87. L.N. 262/87. 17 of 1983, s. 50. L.N. 262/87. First Schedule. Provision of sampling points. 17 of 1983, s. 50. L.N. 262/87. L.N. 262/87. Duties of occupier. Use of liquid fuel. 17 of 1983, s. 50. L.N. 262/87. Power to take samples of dust and grit and take samples of liquid fuel. 17 of 1983, s. 50. L.N. 262/87. L.N. 262/87. Second Schedule. L.N. 262/87. Third Schedule. Fourth Schedule. Fifth Schedule. L.N. 262/87. Weighting of a sample. L.N. 262/87. Division of sample. 17 of 1983, s. 50. L.N. 262/87. Size analysis and viscosity determination of sample. 17 of 1983, s. 50. (Cap. 8.) First Schedule. (Cap. 8.) Emission of dust or grit. L.N. 262/87. Sixth Schedule. L.N. 262/87. L.N. 262/87. L.N. 262/87. L.N. 262/87. 17 of 1983, s. 50. L.N. 262/87. L.N. 262/87.

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