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Chapter: | 311B
 | Title: | AIR POLLUTION CONTROL (DUST AND GRIT EMISSION) REGULATIONS | Gazette Number: | |
| Schedule: | 3 | Heading: | METHOD OF TAKING SAMPLES OF DUST AND GRIT FOR SIZE ANALYSIS OR DETERMINATION OF THE RELATIVE PROPORTION OF DUST AND GRIT BURDEN | Version Date: | 30/06/1997 |
[regulation 6(2)(b)]
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.
(L.N. 262 of 1987)