AS 3640-1989

1 - AS 3640-1989 WORKPLACE ATMOSPHERES-METHOD FOR SAMPLING AND GRAVIMETRIC DETERMINATION OF INSPIRABLE DUST
4 - PREFACE
4 - CONTENTS
5 - FOREWORD
6 - 1 SCOPE.
6 - 2 APPLICATION.
6 - 3 REFERENCED DOCUMENTS.
6 - 4 DEFINITIONS.
6 - 4.1 Equivalent aerodynamic diameter (EAD)
6 - 4.2 Inspirable dust
6 - 4.3 Breathing zone
6 - 4.4 Pulsation ratio
6 - 5 PRINCIPLE.
6 - 6 APPARATUS.
6 - 6.1 Sampling systems.
6 - 6.2 Personal sampling for inspirable dust.
6 - 6.3 Fi lter.
7 - 6.4 Sampling pumps.
7 - 6.5 Timing device.
8 - 6.6 Secondary flowmeter.
8 - 6.7 Mi crobalance.
8 - 6.8 Static eliminator.
8 - 7 CALIBRATION OF SAMPLING EQUIPMENT.
8 - 8 PROCEDURE.
8 - 8.1 Filter pre-weighing.
8 - 8.2 Sampling.
9 - 8.3 Transporting filters after sampling.
9 - 8.4 Weighing used filters.
9 - 9 CALCULATIONS.
9 - 10 PRECISION, ACCURACY AND DETECTION LIMIT.
9 - 11 REPORTING OF RESULTS.
10 - APPENDIX A - CALIBRATION OF SECONDARY FLOWMETER
10 - A1 SCOPE.
10 - A2 APPARATUS.
10 - A2.1 General.
10 - A2.2 Primary flowmeter.
10 - A2.3 Battery pack.
10 - A2.4 Sampling train.
10 - A2.5 Timing device.
11 - A3 PROCEDURE.
11 - A4 CALIBRATION RECORD.
12 - APPENDIX B - INFORMATION ON THE DEFINITION OF INSPIRABLE DUST
13 - REFERENCES

Sets out a method for the sampling and analysis of inspirable dust in workplace atmospheres. This method is used to assess personal exposure by sampling of a worker's zone. While the method allows only for personal sampling, it can be used to assist in controlling the occupational environment by means of fixed position (i.e. static) samples. The method complements AS 2985.

This Standard sets out a gravimetric method for the collection and determination of inspirable dust in workplace atmospheres. It does not consider the measurement of 'respirable' dust.

Under Revision see DR 02320