Effect of Non-wear Time
{"Image DocumentName": "Effect of Non-wear Time", "Image ImageDescription": "Effective protection given by RPE. Effect of Non-wear Time. Level of. Protection. Required. = Effective. Given By. RPE Time for which RPE is not worn, minutes in an 8 hour working day. Effective protection given by RPE. Respiratory protective equipment can be the best designed, most effective filtering device on the market, but if it is not worn when it should be, the drop in protection for the user can in some cases be dramatic. This chart plots levels of protection of respirators, against the effect of not wearing them during an 8 hr work shift. The first 10 minutes of non wear time tends to affect the higher protective devices the most. Even a product with a protection factor of 50 will drop down to about 30 if not worn for 10 minutes. Therefore the importance of wearability and good education of the user cannot be stressed strongly enough, often harmful dusts can remain in the air for 20 minutes or more after work has finished, e.g electric sanding activities in a wood working shop. Source: 3M Australia Pty Limited \u2013 reproduced with permission.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}