From Wikipedia, the free encyclopedia
The KKS Power Plant Classification System is a
standardised system for the classification of power stations. It
serves during engineering, construction, operation and maintenance
of power stations for identification and classification of the
equipment. The system is known in short as KKS which is the
abbreviation of the German term
Kraftwerk-Kennzeichensystem. KKS will be replaced in
future by Reference Designation System for Power Plants, RDS-PP.
RDS-PP has almost same structure as KKS - 90 % of the code
letters in the function key, other keys much less.
Structure
and Format
The KKS has three different types of codes:
- Process-related code, for identification of
systems and equipment according to their functions in the power
station process.
- Point of installation code, for identification
of points of installation of electrical ,control and
instrumentation devices
- Location code, for identification of locations
of equipment and structures.
| Breakdown
level |
|
0 |
1 |
|
2 |
3 |
| Data
character |
|
G
|
F0 |
F1 |
F2 |
F3 |
FN1 |
FN2 |
|
A1 |
A2 |
AN1 |
AN2 |
AN3 |
A3 |
B1 |
B2 |
BN1 |
BN2 |
| Process-related
identification |
=
|
Total plant |
System code |
|
Equipment unit code |
Component code |
| Data type * |
= |
(A or N) |
(N) |
A |
A |
A |
N |
N |
|
A |
A |
N |
N |
N |
(A) |
A |
A |
N |
N |
| Point of installation
identification |
+
|
Total plant |
Installation unit code |
· |
Installation space code |
|
| Data type * |
+ |
(A or N) |
(N) |
A |
A |
A |
N |
N |
· |
A |
(A) |
(N) |
(N) |
N |
(A) |
|
| Location
identification |
+
|
Total plant |
Structure code |
|
Room code |
|
| Data type * |
+ |
(A or N) |
(N) |
A |
A |
A |
N |
N |
|
(A) |
(A) |
(N) |
N |
N |
(A) |
|
*) Data types are Alpha and
Numeric. Alpha contains only capital letters
excluding I and O, and also some special characters. If type is in
parentheses, data characters may be omitted if the code remains
unique.
Field description on Process-Related
Identification
| Fields |
Content |
| F1, F2, F3 |
System and plant classification |
| A1, A2 |
Mechanical, electrical, control and instrumentation equipment
classification |
| B1, B2 |
Component, signals and signal applications classification |
Examples of
codes
Break down of =10LBA10BR001
| Total plant |
System |
Equipment code |
Component code |
| unit 1 |
Main steam piping system 10 |
pipe 001 |
|
| =1 |
0LBA10 |
BR001 |
|
Break down of =00LAC10AP001KP01
| Total plant |
System |
Equipment code |
Component code |
| unit 0 |
Feedwater pump system 10 |
pump unit 001 |
pump 01 |
| =0 |
0LAC10 |
AP001 |
KP01 |
Break down of +G0BFA20·C2
| Total plant |
Installation unit code |
|
Installation space code |
| unit G |
Low-voltage main distribution board |
|
floor, location 2 |
| +G |
0BFA20 |
· |
C2 |
Break down of +L0UMA10R01
| Total plant |
Structure identification |
Room identification |
| unit L |
Steam turbine building |
Room 01 |
| +L |
0UMA10 |
R01 |
Function Key (Main
Groups)
With the KKS system the main systems of a power station are
identified by using a function key.
A Grid and distribution systems
C Instrumentation and control equipment
PA Circulating water system
Function
Key |
Main Groups |
| A |
Grid and distribution systems |
| B |
Power transmission and auxiliary power supply |
| C |
Instrumentation and control equipment |
| E |
Conventional fuel supply and residues disposal |
| F |
Handling of nuclear equipment |
| G |
Water supply and disposal |
| H |
Conventional heat generation |
| J |
Nuclear heat generation |
| K |
Reactor auxiliary systems |
| L |
Steam, water, gas cycles |
| M |
Main machine sets |
| N |
Process energy supply for external users |
| P |
Cooling water system |
| Q |
Auxiliary systems |
| R |
Gas generation and treatment |
| S |
Ancillary systems |
| U |
Structures |
| W |
Renewable energy plants |
| X |
Heavy machinery (not main machine sets) |
| Z |
Workshop and office equipment |
Function Key
(Main Groups and Subgroups)
Examples for Main Groups and Subgroups:
| A |
Grid and distribution systems |
| AT |
Transformer equipment |
| AU |
Open-loop control, checkback and auxiliary
equipment |
| AV |
Marshalling Racks |
| AW |
Instrument Panels |
| B |
Power transmission and auxiliary power
supply |
| BA |
Power transmission |
| BAA |
Generator leads |
| BAB |
Foundation cabinets |
| BAC |
Generator circuit breaker, also commutating pole circuit
breaker, including cooling system |
| BAT |
Generator Transformers, including cooling system |
| BA... |
|
| BB |
Medium voltage distribution boards and transformers,
normal system |
| BBA - BBS |
MV distribution boards |
| BBT |
MV auxiliary power transformers |
| BB... |
|
| E |
Conventional fuel supply and residiues
disposal |
| EA |
Unloading and storage of solid fuels |
| EAA |
Ship unloading system |
| EAB |
Rail wagon and truck unloading bay |
| EAC |
Transport system |
| EAD |
Stacking system |
| EA... |
|
| ET |
Ash and slag removal system |
| ETA |
Wet ash conveying system |
| ETB |
Storage or settling pond for wet ash |
| ETC |
Wet ash dregger |
| ETD |
Conveying system for granulate |
| ETE |
Storage system for granulate |
| ETG |
Conveying system for dry ash |
| ETH |
Storage system for dry ash |
| ET... |
|
| H |
Conventional heat generation |
| HA |
Pressure system |
| HAA |
LP part-flow feed heating system (flue gas heated) |
| HAB |
HP part-flow feed heating system (flue gas heated) |
| HAC |
Economizer
system |
| HAD |
Evaporator
system |
| HA... |
|
| HF |
Bunker, feeder and pulverizing system |
| HFA |
Bunker for pulverizing system |
| HFB |
Feeder system |
| HFC |
pulverizing system (incl. classifier) |
| HFD |
Flue gas return
system |
| HFE |
Mill air system, carrier air system |
| HF... |
|
| HH |
Main firing system (electric-powered as
well) |
| HHA |
Main burners |
| HHB |
Retarded combustion grate |
| HHC |
Grate combustion system |
| HHD |
Other burner equipment (e.g. vapour burner, flue dust
burner) |
| HHE |
Pulverized coal bin, forwarding and
distribution system |
| HHF |
Oil temporary storage, pump and distribution system |
| HHG |
Gas pressure reduction, distribution system |
| HH... |
|
| HL |
Combustion air system (primary air, secondary
air) |
| HLA |
Ducting system |
| HLB |
Fan system, forced draught fan system |
| HLC |
External air heating system (not flue gas heaed) |
| HLD |
Air heating system (flue gas heated) |
| HL... |
|
| HN |
Flue gas exhaust (without flue gas
treatment) |
| HNA |
Ducting system |
| HNC |
induced draught fan system |
| HNE |
Smoke stack system (chimney) |
| HNF |
Flue gas recirculation system |
| HN... |
|
| 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 |
| LAD |
HP feedwater heating system |
| LAE |
HP desuperheating spray system |
| LA... |
|
| LB |
Steam system |
| LBA |
Main steam piping system |
| LBB |
Hot reheat piping system |
| LBC |
Cold reheat piping system |
| LBD |
Extraction piping system |
| LB... |
|
| LC |
Condensate
system |
| LCA |
Main condensate piping system |
| LCB |
Main condensate pump system |
| LCC |
LP feedwater heating system |
| LC... |
|
| M |
Main machine sets |
| MA |
Steam turbine plant |
| MAA |
HP turbine |
| MAB |
IP turbine |
| MAC |
LP turbine |
| MAD |
Bearings |
| MAG |
Condensing system |
| MA... |
|
| MB |
Gas turbine plant |
| U |
Structures |
| UH |
Structures for conventional heat
generation |
| UHA |
Steam generator enclosure, steam generator building (boiler
house) |
| UHF |
Bunker bay |
| UH... |
|
| UM |
Structures for main machine sets |
| UMA |
Steam
turbine building |
| UMB |
Gas turbine
building |
| UMC |
Gas and steam tubine building |
| UM... |
|
Equipment Unit Key (Main
Groups)
Equipment
Unit Key |
Main Groups |
Example |
| A |
Mechanical equipment |
AA - valves |
| B |
Mechanical equipment |
BQ - supports |
| C |
Direct measuring circuits |
CP - pressure measuring |
| D |
Closed loop control |
DF - flow, rate |
| E |
Analog and binary signal conditioning |
ER - reactor protection |
| F |
Indirect measuring circuits |
FD - density measuring |
| G |
Electrical equipment |
GQ - power sockets |
| H |
Subassemblies of main and heavy machinery |
HD - bearing assembly |
| J |
Nuclear assemblies |
JN - neutron sources |
Equipment
Unit Key (Main Groups and Subgroups)
Examples for Main Groups and Subgroups of equipment unit
keys:
| A |
Mechanical Equipment |
| AA |
Valves, Dampers, etc., incl. actuators, also manual |
| AB |
Isolating elements, air lock |
| AC |
Heat exchangers, heat transfer surfaces |
| AE |
Turning, cranes, hoists, lifts, driving, lifting and slewing
gear (also manipulators) |
| AF |
Continuous conveyors, feeders |
| AG |
Generator units |
| AH |
Heating, cooling, air conditioning units |
| AJ |
Size reduction equipment, only as part of process |
| AK |
Compacting and packaging equipment, only as part of
process |
| AM |
Mixer, agitators |
| AN |
Compressor units, fans |
| AP |
Pump units |
| AS |
Adjusting and tensioning equipment for non-electrical
variables |
| AT |
Cleaning, drying, filtering and separation equipment ,excl.
*BT* |
| A... |
|
| B |
Mechanical Equipment |
| BB |
Storage eqipment (vessels, tanks) |
| BE |
Shafts (for erection and maintenance only) |
| BF |
Foundations |
| BN |
Jet pumps, ejectors, injectors |
| BP |
Flow restrictors, limiters, orifices (not metering
orifices) |
| BQ |
Hangers, Supports, racks, piping penetrations |
| BR |
Piping, ductwork, chutes |
| BS |
Silencers |
| B... |
|
| C |
Direct measuring circuits |
| CB |
Radiation variables, e. g. thermal radiation, flame monitoring
(other than *CR* oder *CQ*) |
| CD |
Density |
| CE |
Electrical variables (e. g. el. current, voltage, el. power,
el. frequency) |
| CF |
Flow, rate |
| CG |
Distance, length, position, direction of rotation |
| CH |
Manual input (as manually operated sensor) (e. g. fire
detector) |
| CJ |
Power (mechanical, thermal) |
| CK |
Time |
| CL |
Level (also for dividing line) |
| CM |
Moisture, humidity |
| CP |
Pressure |
| CQ |
Quality variables (analysis, material properties other than
*DD*, *DM*, *DV*) |
| CR |
Radiation variables |
| CS |
Velocity, speed, frequency (mechanical), acceleration |
| CT |
Temperature |
| C... |
|
| D |
Closed loop control cirquits |
| D... |
|
Component Key (Main
Groups)
Component
Key |
Main Groups |
Example |
| K |
Mechanical components |
KC - heat exchangers |
| M |
Mechanical components |
MT - turbines |
| Q |
Instrumental and control components |
QR - instrument piping |
| X |
Signal origin |
|
| Y |
Signal application |
|
| Z |
Gated signals |
|
Standards and further
development
KKS will be replaced by RDS-PP which is in fully accordance with
the standard IEC 61346.
For the document kind classification code IEC 61355 is applied.
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