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1 | P a g e
Plant-labeling system
The power plant labeling system (PPS) is a plant identification system for uniform and
systematic identification of power plants . It has been used since the early 1980s, farmers and power plant
power plant operators the unique name and identification of all components of a power plant. The power plant
marking system from VGB - Working Group plant identification and documentation maintained and further
developed. Be regulated, the PPS indicator in the Directive VGB B105 and B106.
Table of Contents
[ Conceal ]
1 building
o 1.1 Outline Level 0 - Total Investment
o 1.2 Outline Level 1 - Functional overall system
o 1.3 Outline Level 2 - Physical
o 1.4 Outline Level 3 - Equipment / Signal indicator
o 1.5 Example
2 Function key (main groups)
3 function keys (main groups and subgroups)
4 units Keyword (main groups)
5 units Keyword
6 key resources (main group)
7 Key Resources
8 implementation of the labeling
9 meaning
10 Standardization and further development
11 sources
12 links
Structure [ Edit ]
The labels referred to PPS consists of a 15 - to 17-digit letters - and numbers combination. The letters are
generally to classification of the systems and assemblies used. The numbers are usually the count.
The PPS distinguishes three types of signs:
Procedural identification , encryption, plant and equipment in the power plant process
Position marking , to encrypt locations and slots in electrical systems
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Space identification , encryption, the topographic location of facilities and equipment in buildings
The identification of PPS follows a fixed structure , which is to outline steps oriented. It increases from left to
right of detail of the plate. The structure of the outline levels is a lpha- n umerisch. In the following, A for letters
and N used for numbers. Between the levels of each organization a space is set. When the installation is
marking the division between stage 1 and 2 outline the character " . " (Dot) is set.
Outline level 0 Outline Level 1 Outline Level 2 Outline level 3
Overall plant Function Aggregate Resources
O or N (N) AAANN AANNN (A) AANN
Points that are used only when needed, are in parentheses.
Outline level 0 - Total plant [ Edit ]
The first stage refers to the overall system structure and has counted character. It consists of a number or a
letter.
Outline Level 1 - Functional overall system [ Edit ]
The second outline level refers to a functional system as a whole in the overall system. It consists of 3 letters
and 2 digits with an optional leading digit. The letters are assigned according to a predetermined key systems
in power plants. Here, the first letter indicates (from left) are the main systems (so-called main groups ), then
the following letters denote the further breakdown into sub-groups. The following two paragraphs have
character and be counted as F Ndenotes count.
Outline level 2 - unit [ Edit ]
The third stage refers to a structure unit in the subgroup. It consists of two letters and three digits. The letters
are assigned according to a predetermined key items (for example, a measurement) in power plants. Here, the
first letter refers to a group of units, and the subsequent letter then referred to the further breakdown into sub-
groups. The following numbers have counted character. Many companies and equipment manufacturers use
here a further characterization, in the first numerical number is a functional addition. This means AA3NN that it
is a vent, a draining and AA4NN AA6NN a measuring point.
Outline Level 3 - Equipment / signal indicator [ Edit ]
The fourth stage structure called a resource or signal indicator in the aggregate. It consists of 2 letters and 2
numbers. The letters are according to a predetermined key operation means (for example, a drive)
3 | P a g e
assigned. Here, the first letter refers to a group of units, and the subsequent letter then referred to the further
breakdown into sub-groups. The following numbers have counted character. If the signal indicator there is a
defined assignment, eg XB01 is the "up" acknowledgment from a drive. XB51 is the "Not In" acknowledgment
of the same drive, XB02 the "CLOSED" feedback and consequently XB52 the "non CLOSED" feedback.
Example [ Edit ]
In a flowsheet is the name: 1 2LAC03 CT002 QT12
Outline level 0:
The block 1 of a power plant site receives in this first stage, the labeling
Outline Level 1:
For the 3rd feed water pump in the second water - steam cycle labeling is 2LAC03. This means:
Main group 2L: 2 Steam, water, gas circuit
Subgroup (2L) A: feedwater system
Subgroup (2LA) C feed water pump system
Counter (2LAC) 03: third feedwater pump system
Outline Level 2:
For the second Temperature measurement is the identification CT002. This means:
Main Group C: Direct measurement
Subgroup (C) T: temperature measurement
Counter (CT) 002: second temperature measurement
Outline Level 3:
For the 12th Sensor well as sensing devices shall protect the labeling QT12. This means:
Main group Q: Instrumentation and control equipment
Subgroup (Q) T: Protection tubes and thermowells as transducer protection
Counter (QT) 12: Twelfth protective tube or thermowell
With the example above, the 12 Thermowell at the 2nd Temperature measurement at the 3rd Feed pump in
block 1 denotes a power plant site.
Function key (main groups) [ edit ]
4 | P a g e
A network and distribution system
C the control system
MA turbine plant
PA main cooling water system
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Characteristic-
book-
letter
Main group
A Network and distribution system
B Energy dissipation and auxiliary power supply
C System of control (I & C tasks breakdown)
D The control system (breakdown by process engineering tasks)
E conventional fuel supply and debris disposal
F Handling nuclear technical parts
G Water supply and sanitation
H conventional thermal generation
J nuclear heat generation
K nuclear technical assistance facility
L Steam, water, gas circuit
M Main machine set
N Process energy, media provisioning for power-plant foreign consumer
P Cooling water system
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Q Auxiliary plant
R Gas generation and treatment
S Auxiliary system
U Building
W System for regenerative energies
X Great machine (not the main engine set)
Z Furniture and equipment
Letters that are not listed are either not used or disabled.
Function key (main groups and subgroups) [ edit ]
Examples of major groups and sub-groups of function keys:
Example: Electrical energy distribution of a coal power plant
B Energy dissipation and auxiliary power supply
BA Energy dissipation
BAA Generator output
7 | P a g e
BAB Foundation cells
BAC Generator switch, and polarity switch, incl cooling system
BAT Generator transformers, including cooling system
BA ...
BB Medium voltage distribution and power transformers, normal network
BBA - BBS MS Normal distribution network
BBT MS auxiliary power transformers
BB ...
BC Medium voltage distribution transformers and, generally
BF And low-voltage distribution transformers, normal network
Bra Low-voltage power distribution and power transformers, generally
BR Low-voltage distribution, emergency power
BT Battery systems
BU DC distributions, normal network
E conventional fuel supply and debris disposal
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EA Unloading and storage of solid fuels
EAA Ship unloading
EAB Railcar and truck unloading
EAC Transport system
EAD Absetzeranlage
EA ...
ET Ash handling and purification system
ETA Wet ash handling system for
ETB Storage or settling tanks for wet ash
ETC Excavators for wet ash
ETD Conveyor system for granulate
ETE Memory system for granules
ETG Conveying system for dry ash
ETH Storage system for dry ash
ET ...
9 | P a g e
H conventional thermal generation
HA Printing system
HAA ND Teilstromvorwärmer system (flue gas heated)
HAB HD Teilstromvorwärmer system (flue gas heated)
HAC Eco-system
HAD Evaporator System
HA ...
RF Bunker, arbiter, grinding
HFA Bunker before grinding
HFB Allocation
HFC Grinding plant (including separators)
HFD Fume backsiphonage
HFE Mill air system, air-supported system
HF ...
HH Main furnace (with Electricity)
10 | P a g e
HHA Main burner
HHB Burnout grate
HHC Grate
HHD Other combustion device (eg Brüdenbrenner, airborne dust burner)
HHE Coal dust caching, promotion, distribution
HHF Oil temporary storage, promotion, distribution
HHG Gas reduction, distribution
HH ...
HL Combustion air system (primary, secondary air)
HLA Channel system
HLB Blower system, fresh air blower system
HLC Fremdvorwärmung (do not smoke)
HLD Preheating by flue gas
HL ...
HN Flue gas outlet (without flue gas treatment)
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HNA Channel system
HNC Saugzuggebläseanlage
HNE Chimney system
HNF Flue gas recirculation
HN ...
L Steam, water, gas circuit
LA Feedwater system
LAA Storage, degassing (including feedwater tank)
LAB Feedwater piping system (without feed water pump system, feedwater)
LAC Feedwater pump system
LAD Feedwater
LAE HD water-injection system
LAF MD-injection water system
LAH On and Abfahrleitungssystem
LA ...
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LB Steam system
LBA FD-line system
LBB Hot reheat piping system
LBC Cold reheat piping system
LBD Sampling line system
LBE Back-pressure piping system
LBF Reducing HD
LBG Auxiliary steam line system
LBH Anfahrdampfsystem, Abfahrdampfsystem
LB ...
LC Condensate system
LCA Main drain line system
LCB Main condensate pump system
LCC Main condensate preheating
LC ...
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M Main machine sets
MA Steam turbine plant
MAA HP turbine
MAB IP turbine
MAC LP turbine
MAD Warehousing
MAG Condensing unit
MA ...
MB Gas turbine system
N Process energy supply for power-plant foreign consumers (eg district heating)
NA Process steam condensate return system including
NAA Line system (steam)
NAB Line system (condensate)
NA ...
14 | P a g e
P Cooling water systems
PA Main cooling water system
PAA Extraction, mechanical cleaning with fresh water cooling
PAB Main cooling water line and sewer system
PAC Main cooling water pump system
PA ...
PC Auxiliary cooling water system of conventional range
PCA Extraction, mechanical cleaning with fresh water cooling
PCB Cable and duct system
PCC Pump system
PC ...
U Buildings
UH Structures for conventional thermal generation
UHA Dampferzeugerumschließung, boiler house (boiler house)
UHF Bunkerschwerbau
15 | P a g e
UH ...
UM Building sets for main engines
UMA Nacelle for steam turbine
UMB Nacelle for gas turbine set
UMC Nacelle for gas and steam turbine
UM ...
Aggregate Key (main groups) [ edit ]
Characteristic-
book-
letter
Main group
A Aggregate
B Apparatus
C Direct measurement circuit
D Loop
E Measurement, signal processing
F Indirect measurement circuit
G Electrical and I & C equipment
16 | P a g e
H Assembly of the major and large machinery
J Nuclear Technical element
Aggregate Key [ Edit ]
Examples of the key aggregates
A Aggregates
AA Fittings including driving or not hand-operated
AB Abschließungen, locks
AC Heat exchanger heating surfaces
AE Turning, drive, lift and swing works
AF Conveyors, feeders
AG Generator Sets
AH Heating, cooling and air conditioning units
AJ Crushing facilities, only process-related
AK Pressing, Paketiereinrichtungen, only process-related
AM Mixing, stirring
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TO Compressor, blower units
AP Pump units
AS Adjustable, tensioning devices for nichtelektische sizes
AT Cleaning, drying, filtration, separation facilities, except * BT *
A. ..
B Equipment
BB Storage facilities (reservoirs)
BE Bays (only for installation and maintenance)
BF Foundations
BN Radiators, injectors, ejectors
BP Flow, flow limiter, orifices (not Orifice)
BQ Holders, carrying devices, scaffolding, pipe penetrations
BR Pipes, ducts, gutters
BS Sound absorber
B. ..
18 | P a g e
C Direct measurement circuits
CB Sizes radiation (heat radiation, flame monitoring, if not * CR * or * CQ *)
CD Thickness
CE Electrical quantities (eg current, voltage, electric power, electric frequency)
CF Flow rate, throughput
CG Distance, length, position, direction of rotation
CH Manual entry, manual intervention, manually operated devices (eg fire alarm)
CJ Performance (mechanical, thermal)
CK Time
CL Fill level (including interface)
CM Humidity
CP Print
CQ Quality variables (analyzes, material properties) except * DD *, * DM *, * DV *
CR Radiation quantities
CS Speed, speed, frequency (mechanical), acceleration
19 | P a g e
CT Temperature
C. ..
D Control loops
D. ..
Key resources (main group) [ edit ]
Characteristic-
book-
letter
Main group
- Electrotechnical equipment
K Machinery Technical Resources
M Machinery Technical Resources
Q Leittechnisches resources (not electro-technical)
X Original signal
Y Use of signal
Z signals connected
Key resources [ Edit ]
Examples of the key resources:
20 | P a g e
-
Electrotechnical equipment
according to DIN 40719 Part 2 Issue September 1978
A Assembly and parts assembly
-B Converter from nichtelektischer size on electrical variable and vice versa
-C Capacitor
D Binary element, delay, storage device
E Special equipment
-F Protective device
-G Generator, power supply
-H Signaling device
-L Inductance
-M E-motor
N Amplifier, controller
-P Meter test equipment
-Q Power switching device
-R Resistance
- ...
K Machinery Technical Resources
KA Slide valve, flap valve, bursting disc, orifice
KB Gate, Door, Dämmtafel
KC Heat exchangers, coolers
KD Container, tank, expansion tank (procedural)
KE Rotating, moving, lifting, slewing
KF Ascending conveyor, feeder
KJ Crushing machine
KK Press, parceller
K. ..
M Machinery Technical Resources
MB Brake
MF Foundation
MG Gear
MK Coupling
MM Engine, not electrical engineering
MR Pipeline component, channel part
MS Adjusting drives, not electrical engineering
MT Turbine
21 | P a g e
MU Transmission element, not electrical converters and power amplifiers, except clutch and transmission
Q Leittechnisches resources (not electro-technical)
QA Housing (only for the protection of process control equipment) (Siemens deviation from the original VGB)
QB Transmitter, if not structural unit with * QP * Orifice
QH Signaling device
QN Regulator, governor
QP Meter test equipment
QR Measuring pipe
QS Reservoirs in the loop
QT Thermowell, thermowell as transducer protection
QU Converter