Code 5188 applies to employers engaged in installing automatic sprinkler systems such as lawn sprinklers.  Automatic fire sprinkler systems may be installed for residential and commercial concerns.  There are different types of sprinkler systems available, some of which include wet pipe or the use of dry chemicals.  Pipes are filled up to the sprinkler heads with water under pressure, until activated by heat.  The other system which is called the hydraulically calculated system, uses dry chemicals or foam to extinguish.

Once the systems are installed, they are tested for activation, leaks and water pressure is checked.  The outside repair of sprinkler systems is also inclusive under this classification.