4.4.3-5 Tile Cover Replacement

If a lamp replacement requires legend tile removal, there should be a way to ensure that the tile is replaced in the correct location.

Additional Information:
The alarm element and/or the replacement task should be designed to prevent incorrect positioning of the cover, legend, or tile. For example, annunciator tiles might be permanently marked with a unique identifier specifying their position in the alarm window matrix. Alternatively, it might be administratively required that no more than one tile cover be removed from the matrix at a time.