Labels: Recommended Label Placement
It is well recognized that in many instances, well designed and properly placed labels can increase operator and maintenance personnel awareness of the inherent hazards.
When installing labels we recommend to keep in mind the following criteria:
- Label needs to be readily visible to the target audience (personnel that will be in contact with the hazard)
- Label needs to alert the viewer to the hazard in time to take appropriate action.
- Labels are required to be applied on or adjacent to the area where the hazard is present.
- Labels are required to be permanently affixed to the equipment.
- The surface to which the label(s) will be applied should be clean and free of dirt, dust, grease and moisture. If the surface is painted, paint must be dry.
- Press the label on after applying it to the surface. One or more passes over with a rag or roller will ensure that the label is completely glued on the surface and will not fall off.
Recommended Viewing Distances
ANSI Z535-2007 standard uses a ratio of 25 ft of viewing distance per inch of text for Favorable Reading Conditions, and a ratio of 12 ft of viewing distance per inch of text for Unfavorable Reading Conditions. Determining the safe viewing distance of a sign depends upon many factors: lighting, background, type font and visual acuity. Other factors to consider in determining sign size include: the complexity of the message, the reaction time necessary and the angle the sign will be seen from. In many situations it is better to use multiple smaller signs that are strategically positioned than one large sign. Many times letter size may need to be larger than the values shown on the graphic for a variety of reasons:
- To make the sign more noticeable from other information displayed in the area.
- To enable legibility under low light, or other poor viewing conditions.
- To alert persons sooner than the minimum safe viewing distance.
- To convey special importance for portions of the message.
- To improve legibility for persons who have vision problems with small text.