== KKS ==
KKS identifier: KKS stands for the German **Kraftwerk-Kennzeichensystem**, which is the power plant identification system. This code is a structured, four-character identifier that designates components within a power plant (or any equipment), starting from the largest system down to the smallest. An example:

{{:automation:topics:kks_en.png|KKS identifier}}

  * Block 0: **1** – In this case, the first unit of the power plant
  * Block 1: **2LAC03**:
    * Main group **2L**: 2. Steam, water, gas cycle group
      * Subgroup **2LA**: Feedwater system
        * Subgroup **2LAC**: 2. feedwater pump system
          * 2LAC03: third feedwater pump system
  * Block 2: **CT002**
    * Main group **C**: Direct measurement
      * Subgroup **CT**: temperature measurement
        * **CT002**: second temperature measurement
  * Block 3: **QT12**
    * Main group **Q**: I&C equipment
      * Subgroup **QT**: Sensor protection of protective pipes
        * **QT12**: Sensor protection of 12. protective pipe

That is, the above KKS code hides the protection of the 12th protective pipe for the third pump of the second feedwater system of the first power plant unit.