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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Help Center Find new research papers in: 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 the feeder and command termination for final control elements.

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

This code is subject to agreement between the parties to the project. All signals in such automatic regulation system in breakdown level KKS 0, 1, 2, are described identically. Room Identification codificatoin Numbering Serial no.

AL According to cubicles, divisions, sections etc. Codifocation the code is written above the line: R — Gas generation and treatment System-related identification is expedient where the supported items are positively assignable to one system.

Q — Auxiliary systems On breakdown level 2, transducer racks, supports and frames are identified by means of GZ. F3 of the principal process-related task.

However the following principles apply: Coding letters and designations of main groups B1 for components as given in the Component Key and for signals and signal applications: The origin of the letters used in it is in German language, namely: FN numbering is governed by the following principles: The planning, construction and operation of power plants was based in the past on attempts to identify installations and parts thereof by means of differing incompatible systems.


Mechanical Supports Supports may be identified using the system code or the structure code. Special Rules for Mechanical Engineering Measuring Circuits Measuring circuits comprise analog signal acquisition, conditioning, distribution and measured data recording and indicating processing elements.

Where signals or measured data are used to limit or suppress the original measured data, the processed output signals retain the code of the original measured data. Steam, water, gas cycles CJA common to H. Safety equipment, consisting of safety codifiication and their associated piping, are assigned to the system to which they are connected.

D — Loop control circuits The data characters in parentheses may be omitted if the code remains unique.

Structure-related codifocation is expedient where different systems are held by shared supports.

KKS Identification System for Power Plants – Function and Type

It is not allowed to use any other letters. Additional numbering code Serial no. The numerical digits count and subdivide the unit e. Equipment Unit Code Equipment Unit Code consists of two letters, three digits and sometimes one additional letter data character A3 which can be omitted. Format of Breakdown Levels The code is made up of breakdown levels.

Numbering starts anew when one codifidation the preceding code elements changes.

Identification System for Combined Cycle Power Plant (KKS coding)

The additional code is not an alternative code for the components identified under breakdown level 3. Location Identification Identification of locations in structures, on floors and in rooms and also of fire areas.

The result was a series of operations whose sequence was often irrational. Codes may be spaced by the insertion of blank spaces or interposing lines at predetermined points and by multiple- line notation: Coding letters and designations of the main groups A1 as given in the Equipment Unit Key: Mechanical Service Systems Mechanical service systems which serve more than one main group identified on breakdown level 1 are identified as auxiliary or ancillary systems in separate main groups F1 by means of the following coding letters: There are also cases of deviations consisting in using the dividing symbol twice, and AN, e.


KK standard codification

AK over a separate position code is to be established, e. D — Control systems Spaced notation promotes the comprehensibility and mnemonic quality of codes. Where measured data are corrected e. Physically separate rooms in structures are identified by numbering, grid squares in the outdoor area by coordinates. Numbering begins kms for each structure. The AN number of breakdown level 2 is used to number the items of equipment classified in A1 and A2.

Control and Instrumentation Equipment I – 5. Modern methods of digital systems programming and ability of efficient use of technical documentation require to use the concept of functional group positions A1 and A2 and number of the group positions An – three numerals depending on degree of complexity of automatic analog control system.

Any combination of alpha and numerical symbols appropriate to the requirements is acceptable for the identification of connections. Kkz analog signals representing physically similar direct measured variables are identified by means of a set number, e.