The KKS system is a classification system for the complete power plant and its components and provides a common language for the designer. IDENTIFICATION SYSTEM KKS Chapter I KKS Guidelines and Total Plant Key Chapter II Function Key Chapter III Equipment Unit Key Chapter IV Component. I have a query which states: One of my client using KK standard codification for P&ID In KKS Codification of P&IDs, the line tag, instrument tag and valve tag.

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Additional numbering ocdification Serial no. Introduction Identification System is based on the Kraftwerk – Kennzeichen – System KKS This System is the basis for the standard and clear identification of all installations and subsystems in power plant.

These analog signal processing elements receive the code of the equipment unit concerned. EY – Conditioning of signals related to functional protection group of technical and electrical protection system of the unit.

Data character G as well as data character F0 can be coddification in KKS if the further part of designation will remain complete univocal. Data character F0 contains so called prefix number.

A breakdown level 2 is used to identify the installation space. Kraftwerk – Kennzeichen – System KKS was codifkcation in 1st edition by the VGB and is now the basis for the designation of installations and subsystems in power plants. Valves Valves are identified on the equipment unit level by the letters AA regardless of their type, design or actuator. The AN number must consist of three digits.


KKS Identification System for Power Plants – Function and Type

E — Binary and analog signal and variable conditioning S — Ancillary systems The grid sizes and the meaning and type iks the data characters A or N are subject covification agreement between the parties to the project. They are generally identified after the system within the interfaces of which the sensor is installed. Codes may be spaced by the insertion of blank spaces or interposing lines at predetermined points and by multiple- line notation: P — Cooling water systems Read from left to right no data characters may be omitted.

Closed-loop controls are identified according to the controlles variable and not after the measuring circuits which serves the control or the final control element on which the control acts. M — Main machine sets Installation zone X Grid zone Installation zone Y. G — Electrical devices No one of these symbols can be omitted.

Where measured data are corrected e. Location Identification Identification of locations in structures, on floors and in rooms and also of fire areas. Equipment Unit Identification In the process-related code which is the most important and mostly applied type of codes in every branch of engineering, the entire system is subdivided according to the function or process. Requirements to be met by the Identification System To perform the set tasks the Identification system must be capable of satisfying the following requirements: Filters in ventilation and air conditioning systems.


Equipment Unit-Specific Analog Signal Processing and Measuring Circuits Equipment unit-specific analog signal processing elements comprise control and instrumentation equipment which is only provided for one equipment unit such as control interface, protective logics, instruments in cocification feeder and command termination for final control elements.

This code is subject to agreement between the parties to the project.

KK standard codification

Requirements to be met by the Identification System QCU Central chemical supply free for use e. But it is necessary to modificate the counting signs of breakdown level 1 – kk unit code. Transducer Racks, Supports, Frames This auxiliary equipment is identified on breakdown level 1 using the code for the equipment location structure codewith the exception of auxiliaries for main machine sets and heavy machinery system code.

Rules on the Keys Coding letters of the main groups Codicication are specified on next and the subdivisions in F2 and F3 are given in the present chapter II.