kks

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------------------------------------------------------------------------------------------------------------ SHEET NO. 1 OF 18 ------- CIE, BHEL, HARDWAR

APPLICATION OF KKS CLASSIFICATION

SYSTEM FOR TURBINE AND ITS

INSTRUMENTATION AND CONTROL

00 16.4.08 SASWATI SASWATI KBBATRA

REV DATE PREPARED BY

CHECKED BY

APPROVED BY

PROJECT:- 3 X 250 MW BONGAIGAON TPP BHARTIYA RAIL BIJLEE CO. LTD.

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1.0 INTRODUCTION

This document is intended for understanding KKS(classification system for power plant) and for information purpose only.

KKS system is a classification system for the complete power plant and its components and provides a common language for the designer, the

manufacturer and the user. This paper provides an overview of KKS application for turbine and its instrumentation and control system.

1.1 COMPLETE TAG/CODE NUMBER

Complete tag number for any component is of the form :

A A A N N A A N N N (A) A A N N ----------- ----------- --- ---------

Function Equipment Process Equipment Key Key Key

A : Alphabetic symbol N : Numeric symbol

(A) : Optional

2.0 FUNCTION KEY 2.1 FIRST LETTER OF THE FUNCTION KEY

The meaning of the first letter of the function key can be seen from the

following list. A = Alphabetic symbol

N = Numeric symbol

A A A N N A A N N N

Example M A A 5 0 C P 0 0 1

A Grid and distribution plant B Unit main and auxiliary current supply system

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C Parts of instrumentation and control D

E Conventional fuel and ash handling F Handling of nuclear technical parts

G Water supply and drainage H Conventional heat generation system (Boiler) I Nuclear heat generation

K Nuclear auxiliaries L Steam, condensate and gas cycle

M Main machinery (turbine, generator etc.) N Process energy distribution (external) P Cooling water system

Q Auxiliaries S Ancillaries

U Civil work X Large machinery

2.2 THE FUNCTION KEY "C.."

A A A N N A A N N N (cabinet for EHC module)

Example C J J 0 2 H B 1 1 4 position HB 114)

C Parts of instrumentation and control

CC Cabinets for binary signal conditioning and drive control

CCA Drive control and binary signal conditioning (train-1)

CJ Unit coordinator level

CJJ I&C Cabinets for turbine

CJN Cabinets for generator voltage regulator

CW Control stations

CWA Main control desk

CX Local control stations

2.3 THE FUNCTION KEY "L.."

A A A N N A A N N N

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Example L B A 1 0 C P 0 0 1 (Main steam pressure before stop valve-1)

L Steam, condensate, gas cycles

LA Feed water system

LAB Feed water piping system (from deaerator to boiler)

LAD HP - heater LB Steam systems

LBA Main steam piping

LBB Hot reheat piping

LBC Cold reheat piping

LBE Back pressure system

LBF HP bypass system LBG Auxiliary steam system

LBH Start up steam system

LBK Process heat transfer

LBQ HP extraction piping system

LBS LP extraction piping system

LBT

LBU Common blow-off piping

LBW Seal steam system

LBX Medium supply for control and protective units

LBY Control and protective units LC Condensate system

LCA Main condensate system

LCB Main condensate pumping system

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LCC LP heating system

2.3 THE FUNCTION KEY "M.." A A A N N A A N N N

Example M A B 5 0 C P 0 0 1 (steam pressure behind blading IP- casing)

M Main machinery

MA Steam turbine

MAA H.P. turbine MAB I.P. turbine

MAC L.P. turbine

MAD Bearings

MAG Condenser including flash boxes and measuring devices

MAJ Air extraction

MAK Power transmission between turbine & genr, shaft turning gear

MAL Turbine drain system

MAN LP bypass system including injection water system

MAP (only for nuclear power plants)

MAQ Vent system MAV OIL system

MAW Seal, heat and cooling system.

MAX Control fluid system

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MAY Control and protective system

MB Gas turbine plant

MK Generator

MKA Generator casing inclusive stator and rotor

MKC Excitation

MKD Bearings

MKF Primary water cooling system

MKG Gas turbine

MKQ Exhaust gas system

KMW Seal oil system

MKY Control and protective system MY Control governing and protective equipment.

MYA for steam turbine plant

2.5 THE FUNCTION KEY "P.." and X.."

A A A N N A A N N N

Example P G B 1 3 C T 5 0 2 (cooling water before oil cooler 2)

P Cooling water system PA Main cooling water system

PAA Mechanical cooling water cleaning facilities

PAB Pipe and canal system

PAC Main cooling water pumps

PAH Condenser cleaning system

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PAL Ventilation, evacuation

PG Conventional closed cooling water system

PGB C.W. for oil, control fluid cooler etc. PGM Secondary water for generator primary water cooler

XA Boiler feed pump turbine

2.6 The Numerical Symbols of the Function Key

A A A N N A A N N N

Example M A A 0 0 E C 0 0 1 ( start-up program )

The numerical symbols of the different functions (systems or sub-systems)

are usually standardized in order to recognize the type of system valid for the power plant concerned. Therefore in most of the cases the number is not

counted continuously starting with 01,02,..

Examples for complete function keys are given in clause 3.10. For a detailed

listing of all function keys used for the turbine - generator sets it is referred to the piping and instrumentation drawings and to the measuring point list.

00 For superordinated signification (as in the given example, start-up / shut-down program for turbine) the 00 is used.

3. Equipment Unit Key

3.1 The First Letter of the Equipment Unit Key

The meaning of the first letter of the equipment unit key can be seen from the following list. The darkened areas of interest for I&C of the turbo

generator set and are explained in more detail in the lists given under 3.2 ... 3.7.

A A A N N A A N N N

Example M A X 5 1 C P 0 1 2 (trip fluid pressure)

A Units (incl. drives.)

B Tanks, heat exchangers, apparatus ...

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C Measuring circuits

D Close Loop Control circuits

E Processing of measured values

G Electrical equipment (subdistributors etc.)

H Subassemblies of heavy machines I Nuclear subassemblies

3.2 The Equipment Unit Key "A."

A A A N N A A N N N

Example M A G 1 0 A A 0 0 1 (vacuum breaker valve)

A. Units incl. drives

AA Valves

AN Air exhauster, vacuum pumps

AP Pumps

AZ Overspeed governor, shaft position

3.3 The Equipment Unit Key "B."

A A A N N A A N N N Example M A X 4 5 B Y 0 0 1 (hydr. speed governor)

B. Apparatus BB Vessels and tanks

BC Heat Exchangers

BP Flowing limitation

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BT Separators, filters

BY Mechanically driven regulators

3.4 The Equipment Unit Key "C."

A A A N N A A N N N

Example L B A 0 0 C F 0 0 1 (main steam flow)

C. Measuring circuits CD Density measurements

CE Electrical quantities

CF Flow rate measurements

CG Distance, length or position measurements

CL Level measurements

CP Pressure measurements CS Velocity, speed or frequency measurements

CT Temperature measurements

CU Combined quantities

CW Weight force or mass measurements

CY Vibration or expansion measurments

3.5 The Equipment Unit Key "D."

A A A N N A A N N N Example M Y A 0 1 D S 0 0 2 (speed controller of EHC)

D. Closed loop control circuits

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DD Density control circuit

DE Control circuit for electrical quantities

DF Control circuit for flow DG Control circuit for distance/length

DP Pressure control circuit

DS Control circuit for speed/frequency

DT Control circuit for temperature

DU Control circuit for combined quantities

3.6 The Equipment Unit Key "E."

A A A N N A A N N N

Example M A Y 0 1 E P 0 0 1 (stress evaluator)

E. Processing of measured values

EA Unit control

EB Group control

EC Subgroup control

EE Sub-loop control

EG Alarm logic

EP Supervisory computer (e.g. stress evaluator)

EU Combined processing of measured values

EY Protective logic EZ Protection

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3.7 The Equipment Unit Key "F." A A A N N A A N N N

Example M K A 0 2 F E 0 0 1 load controller of EHC

F. Measurements with special signal conditioning

FE Electrical quantities (load) FS Speed /frequency

3.8 The Equipment Unit Key "G."

A A A N N A A N N N Example M A B 0 0 G B 0 0 1 (junction box for signals from IP –section)

G. Electrical equipment GA Subdistributor for drive-related binary transmitters

GB Subdistributor for non-drive-related binary transmitters

GC Subdisributor for analog transmitters

GF Subdistributor general

3.9 The Numerical Symbols of the Equipment Unit Key

A A A N N A A N N N (A)

Example M A A 1 0 C T 0 0 1 B

The number of the equipment unit consists of three digits. In most of the cases it is counted continuously starting with 001, 002, ... But to avoid

confusion other ways of counting are also admitted. If required a last alpha digit (in the example : B) is used to identify pilot valves, drives with

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multiple power supply, double thermometers (as in the example) as sub-units of a complete equipment unit.

3.10 Examples for KKS Key (Main Components of the turbine, TSE) HP casing M A A

HP emergency stop valves M A A 1 0 A A 0 0 1

M A A 2 0 A A 0 0 1 HP control valves M A A 1 0 A A 0 0 2

M A A 2 0 A A 0 0 2

IP casing MAB Reheat stop valves M A B 1 0 A A 0 0 1

M A B 2 0 A A 0 0 1

Reheat control valves M A B 1 0 A A 0 0 2 M A B 2 0 A A 0 0 2

LP casing M A C

Front bearing of HP casing M A D 1 1 Front bearing of IP casing M A D 1 2

Front bearing of LP casing M A D 1 3 Front bearing of LP casing M A D 1 4

Laek -off control valve M A W 5 0 A A 0 0 1

Gland steam condenser M A W 8 0

Air exhauster M A W 8 0 A N 0 0 1

Control fluid tank M A X 1 1 B A 0 0 1

Control fluid pumps M A X 1 6 A P 0 0 1 M A X 1 6 A P 0 0 2

Overspeed governor M Y A 1 0 A Z 0 0 1, 2

Shaft position M Y A 1 0 A Z 0 1 1

Speed measuring device M Y A 1 0 C S 0 11,12,13,14

Check valve cold reheat L B C 1 1 A A 0 0 1 L B C 2 1 A A 0 0 1

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Main steam pressure L B A 1 0 C P 0 0 1

Main steam temperature L B A 1 0 C T 0 0 1

Cold reheat pressure L B C 1 1 C P 0 0 1

Cold reheat temperature L B C 1 1 C T 0 0 1

Hot reheat pressure L B B 1 0 C P 0 0 1 Hot reheat temperature L B B 1 0 C T 0 0 1

NR valves extr. 5 L B Q 0 1 A A 0 0 1

L B Q 0 1 A A 0 0 2 NR valves extr. 4 L B S 1 4 A A 0 0 1

L B S 1 4 A A 0 0 2

NR valves extr. 3 L B S 1 3 A A 0 0 1 L B S 1 3 A A 0 0 2

TSE indicator M A Y 0 0 C T 9 1 0

TSE recorder 1 M A Y 0 0 C T 9 1 1

TSE recorder 2 M A Y 0 0 C T 9 1 2

4. The Process Equipment Key

4.1 The First Letters of the Process Equipment Key

The meaning of the first letter of the process equipment key can be seen

from the following list. The boldened letters are of interest for I&C. A A A N N A A N N N(A) A A N N

Example M A A 1 0 C T 0 0 1 A - B 0 1 (TSE sensor)

K . Mechanical process equipment

M . Mechanical process equipment

Q. Process equipment for I&C

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QB Transmitter

QH Annunciation system

QN Controller

QP Measuring instruments testing equipment

QR Differential pressure lines QS Equalizing tank, flow chamber

QT thermometer wells

QU Converter

- . Electrical process equipment ----------------------------

-A Modules and component assemblies

-B Transducers from non-electric quantities

-C Capacitors -D Delay equipment, memory

-E Special facilities

-F Protection equipment

-G Generators, power supplies

-N Annunciation system -K Relays, contactor

-N Amplifiers, controller

-P Measuring instruments, testing equipment

-Q Power switching devices

-R Resistances

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-S Circuit breaker

-T Transformers

-U Modulators, transducers -V Tubes, semiconductor

-W Transformer controller , wave guide

-X Terminals, plugs

-Y Electrically actuated mechanic equipment

-Z Terminations, compensating equipment, filters, limiters

X. Used for signal identification code

( signals from a specific signal area, Ref. cl. 5.0)

Y. Used for signal identification code ( signals for a special application, input signal, Ref. cl. 5.0)

Z. Used for signal identification code ( gated signals from a specific signal area, Ref. cl. 5.0)

4.4 Ex. for Electrical Process Equipment at Main Components of the Turb.

A A A N N A A N N N (A) - A N N

1. Feedpump total L A B 1 0 A P 0 0 1

Feedpump pump L A B 1 0 A P 0 0 1 - P 0 1 Feedpump E-motor L A B 1 0 A P 0 0 1 - M 0 1

2. Double thermocouple M A A 1 0 C T 0 0 1

Ist branch M A A 1 0 C T 0 0 1 A - B 0 1 2nd branch M A A 1 0 C T 0 0 1 B - B 0 1 Indicator M A A 1 0 C T 0 0 1 - I 0 1

3. Position monitoring of valve (several contacts)

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Main steam stop valve M A A 1 0 A A 0 0 1 - S 1 1 M A A 1 0 A A 0 0 1 - S 2 1

M A A 1 0 A A 0 0 1 - S 6 1 M A A 1 0 A A 0 0 1 - S 7 1

4. Position switches at valves

Main steam stop valve M A A 1 0 C G 0 0 1 B - S 1 1 Main steam stop valve M A A 1 0 C G 0 0 1 C - S 2 1 Main steam stop valve M A A 1 0 C G 0 0 1 D - S 6 1

Main steam stop valve M A A 1 0 C G 0 0 1 E - S 7 1

Main steam control valve M A A 1 0 C G 0 0 2 A - S 1 1 Main steam control valve M A A 1 0 C G 0 0 2 A - S 2 1 Main steam control valve M A A 1 0 C G 0 0 2 A - S 6 1

Main steam control valve M A A 1 0 C G 0 0 2 A - S 7 1

5. Thermocouples

TSE sensor HP ESV 100 % M A A 1 0 C T 0 0 1 A – B 0 1 TSE sensor HP ESV 50 % M A A 1 0 C T 0 0 1 B – B 0 1 TSE sensor HP CTRV 100 % M A A 1 0 C T 0 1 1 A – B 0 1

TSE sensor HP CTRV 50 % M A A 1 0 C T 0 1 1 B – B 0 1

TSE sensor HP outer casing 100 % M A A 5 0 C T 0 0 1 A – B 0 1 TSE sensor HP outer casing 100 % M A A 5 0 C T 0 0 1 B – B 0 1

TSE sensor IP inner casing 100% M A B 5 0 C T 0 1 1 TSE sensor IP inner casing 100% M A B 5 0 C T 0 1 2 (spare)

TSE sensor IP inner casing 100% M A B 5 0 CT 0 1 3 (spare)

5.0 SIGNAL IDENTIFICATION CODE

It is used for identifying all process signals used in control and instrumentation system. This code occupies the position of the process equipment key as indicated below.

A A A N N A A N N N A A N N

-------- Signal ID code

Signal identification code is based either on signal (source) area or on application area as described below.

5.1 SIGNAL AREA

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Initial character is X or Z

X . Signals from a specific signal area

Z . Gated signals from a specific signal area . A Functional group control/sub-loop control

. B Control interface . C Conventional closed loop control

. G Binary process signals conditioned via transmitter modules . H Analog process signals conditioned via limit value monitor modules . J Signals not coming from specified areas

. K Signals from protection systems . L Control room and control stations

. M Non floating individual and group alarms . N Status display computer/criteria indication . P Supervisory computer/process computer

. Q Analog signals . R Major closed-loop controls

. S Step signals from FGC . T Turbine instrumentation and control

. V Protective logic . W Hard-wired alarm system

Serial numbers within a signal area are sequentially numbered from 1 to 99.

Examples : DESCP SETTING FG TAG NO SIG CODE Shaft vibrations < max MAA00 EC001 ZA09

Temp. HP casing Top 50% > 100 C MAA50 CT053A XH02 Oil tank level > min MAV10 CL001 XG02

Auxiliary oil pump on MAV22 AP001 XB01

Fire prot 1 operated MAY00 EY001 ZV52 Limit pressure operation on MYA01 DU001 XT37

5.2 APPLICATION AREA

Application refers to the destination of the signal and the initial character is Y.

Y. Signals for special application

YA Functional group control/ sub-loop control YB Control interface YC Conventional closed loop control

YJ For unspecified applications YK Protection systems

YL Control room and control stations YN Status display computer/criteria indication

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YP Supervisory computer/process computer YQ Analog applications

YR Major closed-loop controls YT Turbine instrumentation and control

YV Protective logic YW hard-wired alarm system

Serial numbers within an application area are sequentially numbered from 1 to 99.

Examples :

DESCP SETTING FG TAG NO SIG CODE

Auxiliary oil pump 1 on MAV22 AP001 YB21 Lube oil pressure too low MAV10 EG001 ZV06 Power setpoint raise MYA01 DU001 YT35

HP ESV1(STAUS LAMP) 100 % MAA00 EC002 YL16

5.3 RANGES OF SERIAL NUMBERS FOR INSTRUMENTS

A A A N N A A N N N Example M A V 3 5 C P 5 0 1 - Pressure gauge for oil system

1 . The numbers for local gauges will be between 500 to 599. 2. The nos. for PG – test Instruments will be between 400 and 499.

2. The nos. for ATT Instruments will be between 200 and 299.

2. The nos. for other binary and analog instruments will be between 001 and 199.

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