KKS Introduction 1. What is KKS? KKS = short-form of German word for Identification System for Power Plants 2.
Why is KKS system adopted? It provides a common language and understanding about the nomenclature for different locations, buildings, equipment and connections in the power plant. The system provides a unique identification for these ‘components’ of the power plant. It prevents ‘Mistakes’. The use of KKS has provided the basis for implementation of vastly different systems, like Documentation for operation and maintenance of the plant/equipment, TXP for function plans, Maximo for maintenance management and Eclipse for Work Permit System -
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3.
Where is the system applicable? Process related systems (pumps, vessels, valves, piping, etc.) Instrumentation and Control Functions (Indicators, Transmitters, PLC signals, Function Plans, etc.) Geometrical/geographical Locations (Plants, Buildings, Rooms, Remote Pump-house, etc.) -
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4.
What is the KKS code made of? It is an alpha-numeric code, which means that it is made up of letters(A) and numbers(N) -
5.
Which are the breakdown levels in KKS codes? There are four breakdown levels in process related identification Process-related identification
Data
Total plant
N
System Code (Function Code)
Equipment Code
Component Code
NAA A N NAA N N NAA N N
Level-0 : Total Plant : This identifies separate entities within a power plant. For example, a ‘0’ at this level indicates equipment which is common to whole plant. While, ‘1’ indicates part of a specific unit (1/2/3/4). Level-1: Function : The starting number identifies a specific entity among similar sections of the plant. For example, 11 for GT11, 12 for GT12, etc. Again, a ‘0’ indicates a common equipment. The alphabets indicate specific functional groups and sub-groups. The numbers identify series of similar functions. Level-2 : Equipment : mechanical equipment, instruments, control loops, etc. Level-3 : Component : In C&I, this is used for identifying signals
There are three breakdown levels in location identification
Location
Total
Structure Room Code
6.
identification
plant
Data
(N)
Code
(N) A A A N N(A) (A) (N) N N
Which are the main groups for System Code? Main groups are identified by a ‘Function Key’, which is also the first letter in the System Code Following table describes some keys -
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Function Key Main Groups
A
Grid and distribution systems
B
Power transmission and auxiliary
C
Instrumentation and control
E
Fuel supply
G
Water supply and disposal
H
Heat generation
L
Steam & water cycles
M
Main machine sets
P
Cooling water system
Q
Auxiliary systems
S
Ancillary systems
U
Structures
X
Heavy machinery (not main
7.
Which are the sub groups for System Code? Following are some combination of main groups & sub-groups -
B
Power transmission and auxiliary power supply
BA
Power transmission
BAC
Generator circuit breaker
BAT
Generator transformers, including cooling system
BB
Medium voltage distribution boards and transformers, normal system
BBA - BBS MV distribution boards BBT
MV auxiliary power transformers
H
Conventional heat generation
HA
Pressure system
HAC Economizer system HAD Evaporator system HN
Flue gas exhaust
HNA Ducting system HNE Stack system (chimney)
L
Steam, water, gas cycles
LA
Feedwater system
LAA Storage, deaeration (incl. feedwater tank) LAB Feedwater piping system (excl. feedwater pump and feedwater heating system) LAC Feedwater pump system
LAE HP desuperheating spray system LA... LB
Steam system
LBA Main steam piping system LC
Condensate system
LCA Main condensate piping system LCB Main condensate pump system
M
Main machine sets
U
Structures
MA
Steam turbine plant
UH
Structures for heat generation
MAA
HP turbine
UHA
Steam generator enclosure
MAC
LP turbine
UM
Structures for main machine sets
MAD
Bearings
UMA
Steam turbine building
MAG
Condensing system
UMB
Gas tubine building
MB
Gas turbine plant
8.
What are the main groups for Equipment Code? Main Groups
Example
A
Mechanical equipment
AA - valves
C
Direct measuring circuits
CP - pressure measuring
D
Closed loop control
DE – temperature control
F
Indirect measuring circuits
FL – level with corrections
G
Electrical equipment
GH – Control Panel
9.
A
What are the sub-groups for Equipment Code?
Mechanical Equipment
AA Valves, Dampers, etc., incl. actuators, also manual AH Heating, cooling, air conditioning units AN Compressor units, fans, blowers AP Pump units AT Cleaning, drying, filtering equipment C
Direct measuring circuits
CE Electrical variables (current, voltage) CF Flow, rate CG Distance, length, position, CL Level CP Pressure CQ Quality variables (analysis) CS Velocity, speed, frequency (mechanical), acceleration CT Temperature F
Corrected measurements
FF Flow, compensated for pressure/temperature correction FL Level, corrected FP Pressure, average of 2/3 signals FT Temperature, average of 2/3 signals
10.
How are the series used? Function Code : 10 : High Pressure Zone 20/30 : Intermediate Zone / Drain 50 : Low Pressure Zone Equipment Code: AA 001 to AA 029 : Valves in main flow of fluid with automatic actuators AA 051 to AA 099 : Check valves C*001 to C*199 : Measurement instruments for remote transmission C*501 to C*599 : Measurement instruments for local indication C*401 to C*499 : Measurement instruments for acceptance test measurements Suffixes: H, J : ‘Open’ Feedback M,N : ‘Closed’ Feedback
11.
What are the keys for Component Code?
Component Main Groups
X
Signal origin
Y
Signal application
Z
Gated signals
Example
