Suitability assessment – Task-related factors – Intrinsic Safety

Where RPDs are used in potentially explosive atmospheres, selection will need to include assessment of the RPD itself as a possible ignition source. In order to be used in potentially explosive atmospheres be intrinsically safe such IECEx, SIMTARS, ATEX or other applicable program. Advice from the RPD manufacturer/supplier should be sought on the suitability of the RPD for the environment.

Any RPD or other clothing or equipment worn by a worker can form an ignition source by sparking from impact onto metallic parts or by build-up of static electricity. Cleaning and maintenance of the RPD may need to be planned to ensure that build-up of static electricity is not increased by cleaning processes, or that any inherent antistatic properties are not reduced.  In order to be used in potentially explosive atmospheres, it is essential that the RPD be intrinsically safe, Advice from the RPD manufacturer/supplier should be sought on the suitability of the RPD for the environment.

Reference/s for further information and detail:

AS/NZS 1715:2009 – Selection, use and maintenance – Section 4.2.10.4
SA/SNZ TS ISO 16975.1:2023 – Selection, use and maintenance – Section 7.3 & Annex D.5.2.3