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Hazardous Substances Act, 1973 (Act No. 15 of 1973)

Group IV Hazardous Substances Regulations

Chapter 3 : Conditions Relating to Activities with regard to Group IV Hazardous Substances

11. Monitoring



1) A holder of an authority shall--
a) when he uses a Group IV hazardous substance in the course of his activities, monitor or cause to be monitored the radiation levels and contamination, as the case may be, at regular intervals as required by the particular activities in order to ensure that the applicable maximum dose limits prescribed in Annexure 2 are not exceeded;
b) cause the equipment for such monitoring to be calibrated by a person or body approved for this purpose by the Director-General--
i) directly after the procurement thereof from a supplier;
ii) before it is put into use after any reparation procedure; and
iii) at regular intervals for as long as it is under his control, but at least once every 14 months; and
c) keep a record of such monitoring and calibration.


a) Where a sealed source is damaged or where there are reasonable grounds to suspect that the source is leaking or may possibly leak, the holder concerned shall take immediate steps to prevent the spread of contamination and shall forthwith report the matter to the Director-General by telephone, telegram, telefacsimile or other similar rapid means, and shall closely follow any instructions of the Director-General in relation to such reporting.
b) Where such a source has been repaired, such source may not be put into use by the holder until he has reported the circumstances in writing to the Director-General, and until the Director-General has granted written approval for such recommissioning by the holder.


3) A holder may not subdivide a sealed source without the written permission of the Director-General,