RPD Selection Information

Tools used during the course of a task can produce additional hazards and can influence the performance of the RPD. These influences should be considered as part of the selection process. For examples RPD used during welding and other processes may be subjected to impact by hot or molten particles. This can cause damage to the RPD and may cause ignition of components such as filters. Selection of RPD for these operations should ensure that the RPD is sufficiently robust or that damaged parts can be easily disposed of and replaced on a regular planned basis. Where a flammability risk has been identified, an alternative RPD should be selected with higher heat and flame resistance

For spraying operations with paints, coatings, adhesives, insecticides, etc., consideration of possible damage to and contamination of the RPD from overspray should be considered. Cleaning of the RPD may be difficult and it may be appropriate to consider the use of adequate and suitable disposable RPD, or disposable visor covers or other protective covers. Cleaning of RPD with solvents can lead to damage. Advice from the RPD manufacturer should be sought as to the best cleaning agent to use. Adhesives and other sprays can render valves ineffective if they are not cleaned or replaced regularly. RPD with well-protected valves would be preferred in this case. Power tools can adversely affect RPD performance. This may be through transmitted vibration, impact of air jets emanating from tools, or particles impacting on the RPD. This can cause a significant reduction in protection afforded if the air jet or particles impact in the area of face seals or valves. An assessment should be made to ensure that any air jets or high velocity particles do not interact with the RPD in these sensitive areas.

Reference/s for further information and detail:

AS/NZS 1715:2009 – Selection, use and maintenance – Section 4.3
SA/SNZ TS ISO 16975.1:2023 – Selection, use and maintenance – Section 7.3 & Annex D.3.4