If you cannot find a pure KKS guide, check the documentation packages for major equipment (Siemens turbines, GE generators, Alstom boilers). Their system handbooks often include a chapter titled "KKS Labeling Concept" with specific code tables – effectively a mini KKS Power Plant Identification System PDF tailored to that component.
Once you have obtained a PDF, do not let the sea of abbreviations overwhelm you. Here is how to use it effectively: kks power plant identification system pdf
KKS Example: 10 L AC 01 P 01
│ │ │ │ │ │ │
│ │ │ │ │ │ └── Component number (bearing)
│ │ │ │ │ └──── Component code (pump)
│ │ │ │ └─────── Equipment unit (pump unit)
│ │ │ └─────────── Equipment category (condensate)
│ │ └────────────── Main process (water/steam cycle)
│ └──────────────── System (condensate extraction)
└─────────────────────── Unit/block (10 = Unit 1)