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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It is one digit which identifies one from two or more identical subsystems in the overall plant.

On breakdown level 2 supports should be identified by BQ. The s character may be omitted if no structure in the total plant comprises more than 99 rooms. The alphabetical symbols of this breakdown level are used to classify and divide the overall plant into subsystems, systems or building structures.

Total plant Serial no. The contents of this designation in KKS, is left for coordination for particular power plant. System code System code consists of three letters and two digits. For example maximum of a few direct measured variables: Originally the titles of the breakdown levels were based on the process-related code: The next counting signs of the circuit does not change when is creating only one combined variable.

Log In Sign Up. Codificaton Identification Process-related identification of systems and items of equipment according to their function in mechanical, civil, electrical and control and instrumentation engineering. System-related identification is expedient where the supported items are positively assignable to one system. Current members of the technical committee are: Room Code The room code serves to identify physically separate and fictitious rooms in structures and in the outdoor codufication.

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


KKS Identification System for Power Plants – Function and Type

Where signals or measured data are used to limit or suppress the original measured data, the processed output signals retain the code cosification the original measured data.

For example we can identify here: This rule does not refer to direct measurement circuits, which apply to technical installation and physical variable. Such established grid after addressing can state the coordinate system.

In such instances the first character of FN has a classifying purpose. On breakdown coddification 2, transducer racks, supports and frames are identified by means of GZ. Control and Instrumentation Equipment I – codifictaion.

The direction of numbering is vertical from the lowermost floor upwards. Spaced notation promotes the comprehensibility and mnemonic quality of codifcation. However, such schemes may not have the effect of reserving numbers in other applications, not even within the same engineering discipline.

Codes may be spaced by the insertion of blank spaces or interposing lines at predetermined points and by multiple- line notation: Deviations with respect to the type of data character A or N and their quantity are allowed by DIN Part 2 and are subject to agreement between the parties to the project.

General Notes I – 5.

The AN number of breakdown level 2 is used to jks the items of equipment classified in A1 and A2. Mechanical Supports Supports may be identified using the system code or the structure code. These analog signal processing elements receive the code of the equipment unit concerned. X and Y zones are outside the grid.

Additional numbering code Serial no. Gated analog signals representing physically similar direct measured variables are identified by means of a set number, e. Kraftwerk – Kennzeichen – System KKS was published in 1st edition by the VGB and is now the basis for the designation of installations and subsystems in power plants. For this purpose, data character B1 can contain: Valves Valves are identified on the equipment unit level by the letters AA regardless of their type, design or actuator.

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KK standard codification

Coding letters of the main groups F1 codificatoin specified on next and the subdivisions in F2 and F3 are given in the present chapter II. Data character G as well as data character F0 can be omitted in KKS if the further part of designation will remain complete univocal.

Feed water system Control and protection system for steam, LY. Enter the email address you signed up with and we’ll email you a reset link.

The additional code is not an alternative code for the components identified under breakdown level 3. Data character F0 contains so called prefix number. Equipment unit classification Serial no.

G — Water supply and disposal Numbering starts anew when one of the preceding code elements changes. A Grid and distribution systems B Power transmission and auxiliary power supply C Instrumentation and control equipment D Instrumentation and control equipment for use only when function codes CM to CT are insufficient for the identification of system combinations The subdivisions in F2 and F3, are given in the applicable Function Key.

A – Grid and distribution systems for electric power plants, thermoelectric power plants and heating plants In this type of code, the breakdown level 2 contains equipment unit code. This is subject to agreement between the parties to the project. P — Cooling water systems In case of single closed regulation circuits, it is divided into 2 parts: Control and Instrumentation Equipment Steam system common to LA.

This applies analogously to supply systems. Types of Code and Breakdown Levels In consideration of the various requirements placed on the identification of plants, sections of plants and items of equipment in power station, KKS has three different types of code: