08.2.7-Kks Ge Standard Codification Identification Handbook-389a9076_d

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Revision D Issue date 08/02/2012 389A9076

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KKS IDENTIFICATION HANDBOOK

PART A

GENERAL APPLICATION

DWG Number 389A9076 Rev D Released 7/9/2012

GE Proprietary Information - Class II (Internal) US EAR - NLR

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CONTENTS

STATE OF MODIFICATIONS 3

1. PREAMBLE 4

2. INTRODUCTION TO KKS 8

2.1. DESIGNATION AND TYPE OF DATA CHARACTERS 8

2.2. PROCESS-RELATED IDENTIFICATION 9

3. STRUCTURE AND CONTENTS OF THE BREAKDOWN LEVELS 9

3.1. BREAKDOWN LEVEL 0, TOTAL PLANT "G" & LEVEL 1, "F0" 9

3.2. BREAKDOWN LEVEL 1, FUNCTION PREFIX NUMBER 11

3.3. BREAKDOWN LEVEL 2, EQUIPMENT UNIT A1, A2, AN, A3 12

3.4. BREAKDOWN LEVEL 3, ITEM B1, B2, BN 18



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gSTATE OF MODIFICATIONS

INDEX DATE (dd/mm/yy) DESCRIPTION

A 30/01/09 First issue, GE Energy standard including GT, ST and Gen. unitB 20/12/2010 Chapt 1, VGB references updated. Appendix F7d revised. BPA is

used for LCI instead of MBJ. System numbering cancelled and assigned in Part C. Chapt.3.3.4.b enhanced. Chapt. 3.5. cancelled.

C 11/02/2011 References to Parts and chapters corrected. Chapter 3.2 Fn allocation rewritten,. Appendix A, miscel.correction.

D 08/02/2012 Chapter 1& 2.1: point of installation and location labelling included.Chapter 1 included Field mounted wiring & junction boxes for Foundation Field Bus devices & Foundation Field Bus Segment.Electrical portion cancelled, chapter 3.3.5 makes references to Part E. Appendix A simplified, appendix B and D completed. Appendix

C: not used replaced by blocked.



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g1. PREAMBLE

It is absolutely essential for the parties participating in the construction and operation of a power plant to agree upon a standard system for the designation and classification of the plant, its part and components.

Due to the size of power plants and the fact that the large number of parties participating are all in different locations, communication problems arise which can incur costs which cannot be estimated in advance.

A standard designation system enables each party, irrespective of language and assignment, to identify uniformly and unambiguously, those parts of the plant within its responsibility. The Power Station Designation System KKS satisfies these requirements.

The planners and operators of power stations employ a common, standard system for identifying installations, and parts thereof , with which the data required to plan, construct and operate power stations can be collected and processed. This publication reviews the GE Power System application of the Power Station Designation System KKS based on KKS VGB B106e edition dated 2007 & B105e PowerTech GmbH 7th edition dated 2010.

Abbreviations used

KKS Power Station Designation System (Kraftwerk Kennzeichensystem)

VDEW Association of German Power Stations

VGB Technical Association of Large Power Plant Operators

DIN German Industrial Standard

IEC International Electrotechnical Commission

ISO International Standard Organization

ISA Instrument Society of America

P&ID Piping and Instruments Diagram

I&C Instrument and Control



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gINTRODUCTION OF GE POWER SYSTEM CODING SYSTEM

The purpose of this publication is to summarise the structure, contents and application of the KKS. Illustrations of the structure, and the code section of the VGB book without definitions, are used to describe the system.

For their internal use, GE Energy have reduced the VGB - KKS code to the specific parts for: conventional Gas Turbine unit, thermal plant, Combined Cycle power plants.

The scope of tasks coded in KKS includes the following wherever applicable:

Labelling on drawings of: GT, ST, Generator, and instrument, valves, and equipment in BOP and GE scope of supply using the

process related coding. Cubicles, panels, cabinets and junction boxes in BOP and GE scope of supply using the process related

coding. Piping. Interconnect Cables. Main machinery equipment in DCS HMIs graphic displays. BOP DCS signals including group control. Foundation Field Bus Segment. Equipment in PLC's displays.The above scope requiring KKS labelling shall be documented on the following process related drawings, namely P&Ids / schematics, device summaries, one line diagram, circuit / wiring diagrams of main equipment (GT, ST, Gen, HRSG and their associated modules), Operation and Maintenance manuals narratives, DCS software, site cable diagrams/list.

Tagging of equipment: GT, ST, Generator, and instrument, valves, and equipment in BOP and GE scope of supply using the

process related coding. Cubicles, panels, cabinets and junction boxes in BOP and GE scope of supply using the process related

coding. Interconnect piping. Interconnect Cables. Field mounted wiring & junction boxes for Foundation Field Bus devices.The above scope requiring KKS tagging consist of Name plates / Tagging on physical equipment

Tagging of the plant Control and Monitoring system : Turbines HMI graphics. DCS graphics. DCS Input, output and processed signal. PLC's graphics.The above scope requiring KKS tagging consist of text shown on Graphics close to equipment symbols and text in the DCS toolbox along with signal.

The following tasks are excluded of the KKS labelling/tagging:

Tagging of wires, cards, and electrical components, etc within cubicles, panels, cabinets or junction boxes.

Tagging of wiring of prefabricated equipment, modules and plant components (such as GT, ST, Gen, associated skids, etc.)

Tagging of signal, internal controls variables in control system of prefabricated equipment, modules and plant components (such as GT, ST, Gen, etc).



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g Tagging of non-functional equipment and component such as supports, civil work pedestal, blades, frames,

screws, bolts, shafts, etc. Labelling on all documentation except those mentioned in the inclusiveness. Document numbering based on KKS. KKS Level 3 other than signal, and except where necessary process instruments (sensors and transmitters)

and electrical components of process mechanical equipment.

Special consideration shall be given to the following:

The systems related to the ST, GT and their generator would be identified using the GE coding system known as legacy codes. In addition, a secondary KKS functional code will be given and shown on the P&IDs (i.e. double identification). Similarly the field devices will also be tagged with KKS coding in addition to the original standard GE tagging.

In the DCS all the signals transmitted from the turbine controllers will be given a code according to the KKS identification. A cross-reference list will be provided for all signals exchanged between the turbine controllers and the DCS. This will not be labelled on a GE P&ID.

Part ordering system will nominally be based on the GE part number or specific vendor part number for a particular component.

For Package Plants such as chemical plants, compressors, auxiliary boilers, etc., which are supplied by a vendor in accordance with his standard practice or as catalogue items, the KKS system is not fully applied. However KKS identification is used in case of electrical or I&C interfaces of these package plants with the rest of the plant (i.e. DCS).



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gREQUIREMENTS TO BE MET BY THE DESIGNATION SYSTEM

In order to perform the tasks established, the designation systems must be capable of meeting the following requirements: Determination of all installations and subsystems An adequate number of reserve codes must be available for future developments in power plant engineering Clear identification of all subsystems A designation used in a power plant must be unique Subdivision with graded details and a fixed meaning for the data characters Plausibility check of applied tagging, especially for data processing Existing standards, guidelines and recommendations must be taken into consideration

In order to facilitate the application of KKS for a project managed by a consortium of vendors, GE reserves sections of the sequence numbers for codes used on their GT, ST and Generator drawings. These codes should be reviewed on a project basis to ensure they are consistent with scope and reflect the plant configuration. Exception to reserved codes could be accepted by the parties on a project basis assuring duplication does not occur, and are explicitly outlined during the initial project agreement by all parties.



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g2. INTRODUCTION TO KKS

2.1. DESIGNATION AND TYPE OF DATA CHARACTERS

In consideration of the various requirements placed on the identification of plants, sections of plants and items of equipment in power stations, KKS has three different types of code:

Process-related codeProcess- related identification of systems and items of equipment according to their functions in mechanical, civil, electrical and control and instrumentation engineering.Used by GE Energy for every process.

Point of installation codeIdentification of points of installation of electrical and control and instrumentation equipment in installation units 'e.g. in cabinets, panels, consoles)Mainly used by GE Energy for electrical cubicles and cables.

Location codeIdentification of locations in structures, on floors, in rooms and also of fire areas.Rarely used by GE Energy. May be used for complex installation based on location areas

The uniform composition of process related code is used by all engineering disciplines in their planning and engineering tasks, thus ensuring effective integration of information coupled with unambiguous recognition by all concerned.

The titles of the breakdown levels of the process related of code will henceforth be as follows:

Serial no. of breakdown level

0 1 2 3

Process-related identification

Total plant System code Equipment unit code

Component code

Point of installation identification

Total plant Installation unit code

Installation space code

Location identification

Total plant Structure code Room code

Table 1 summarises the designation and type of data characters of the breakdown levels for all three different types of designation appearing in the KKS.

TABLE 1 : Breakdown Level Structure

Serial number ofbreakdown level

0 1 2 3

Designation ofdata character

G F0 F1 F2 F3 FN A1 A2 AN A3 B1 B2 BN

Type of datacharacter

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

A = Alphabetical symbols (letters, special symbols)N = Numerical symbols (digits)( ) = These data characters may be omitted



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gX = A or N, To be coordinate with all parties

2.2. PROCESS-RELATED IDENTIFICATION

In this type of designation the entire system is subdivided according to the function or process. The equipment units and items must be identifiable in relation to the process.

The process-related designation is for many applications the most important designation. It permits identification of equipment, instrumentation and signals, by location function and type.

In the mechanical, electrical and instrumentation control engineering sectors, the equipment for auxiliary services, power supply, open-loop control, instrumentation, protection, etc., is treated as a process engineering function.

This identification has the prefix sign "=". According to the standard, the prefix sign can be omitted provided that the designation remains unambiguous.

3. STRUCTURE AND CONTENTS OF THE BREAKDOWN LEVELS

The individual breakdown levels of the KKS have an alphanumeric structure.

TABLE 2 : Title and contents of the breakdown levels

Breakdown levels 0Total plant

1Function

2Equipment unit

3Item

Process-relatedcode

Total plant Systemcode

Equipmentunit code

Itemcode

Mechanical engineering Unit System Pump unitCivil engineering Unit

UnitStructure, floorStructure, floor

Rolling doorFan unit

Control and instrumen-tation (for mechanicaland civil engineering)

UnitUnitUnitUnit

SystemSystemSystemSystem

Measuring circuitOpen-loop controlClosed-loop controlMeasuring circuit

TransducerPushbuttonControllerSignal

Electrical and controland instrumentationengineering

UnitUnitUnit

SwitchgearTransformerSystem

Switchgear assemblyTerminal boxJunction box

3.1. BREAKDOWN LEVEL 0, TOTAL PLANT "G" & LEVEL 1, "F0"

It may be necessary to identify units, unit-free plants or expansion stages within a power station, such that a clear and unambiguous distinction exists between them. In such a case, all parties concerned must agree upon this designation with regards to the contents and type of data character (A or N).



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gThe block identifies set of main machinery as gas turbines ,steam turbines or any other type of machine set or production plant and use two characters G F0:

G : The block identification:G represent the block within the plant. A block is a set of units that together make a complete production features such as a combined cycle STAG209E (two Gas turbine units, two HRSG and one Steam Turbine unit).

F0: The unit or train identification within the block:In power plants, data character F0 shall be a numeric character used for the numbering of the similar systems and plants in the parts of a power station, identified with character G. F0 is part of level 1 but is associated to G in order to clearly identify any unit or sub plant production.

G and F0 usage is as follows:The first digit represents the power block, while the second digit is the train, with 0 representing common equipment.

For single-shaft blocks00 Common system between blocks (subdivision is possible)11 Single-shaft block 1 (GT, ST HRSG, & related systems)21 Single-shaft block 231 Single-shaft block 341 etc.

For multi-shaft blocks00 Common system between blocks (subdivision is possible)10 Steam turbine and its generator for block 1 and common

systems for block 111 First gas turbine, its generator, first HRSG and their

auxiliaries for block 112 Second gas turbine, its generator, second HRSG and their

auxiliaries for block 113 Third gas turbine, its generator, third HRSG and their

auxiliaries for block 114 etc.20 Steam turbine and its generator for block 2 and common

systems for block 221 First gas turbine, its generator, first HRSG and their

auxiliaries for block 222 Second gas turbine, its generator, second HRSG and their

auxiliaries for block 223 Third gas turbine, its generator, third HRSG and their

auxiliaries for block 224 etc.

If there are single-shaft units and multi-shaft units in the same site, a combination of the above should be used. The first character G identifies the block (single-shaft, multi-shaft or common systems) and F0 can adopt the values indicated above, depending on the block type (single or multi-shaft). It is not necessary to display Level GF0 on a drawing if it is clearly defined or stated in a note for the project.



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g3.2. BREAKDOWN LEVEL 1, FUNCTION PREFIX NUMBER

F1, F2, F3

The alphabetical characters of this breakdown level are used to classify and divide the overall plant into subsystems, systems or building structures. Wherever possible, all three alphabetical characters are permanently allocated, including their associated boundary constraints and task allotment in modern power plant technology. Please refer to Appendix A for a complete list of GE system codes.

Subdivision of systems, FN

FN numbering allows for a further breakdown and delimitation of a system so that specific sections can be uniquely defined.GE uses a combination of decadal and consecutive numbering based on system complexity.Decadal numbering in subsystem has the advantages over consecutive numbering where subunits (e.g. parallel trains) of piping systems form a subgroup.In each system the main line is divided in decades, and, if not sufficient, with unit numbers within a decade. Other lines (return, bypass, vent, drain, recirculating...) are numbered by unit numbers as subsystems of the relevant decade.Devices on a pipe run will have a matching system coding as the pipe run, except when the primary function of the device is to actuate or influence the action of another device that falls on a pipe run in different system.

FN allocation

The table in Appendix A presents the most used systems codes F1F2F3 in a combined cycle power plant.

Pre-engineered design such as the main product has allocated rigid codes for standardization purposes and are dispatched along with the process need. The site arrangement could defer from project to project and will induce different configuration what may shown a non strict consecutive system ranges. More over the alternation of scope could show alternation of F1 system codes.

Refer to the project wise Part C for exact Fn range allocation. Several ranges are devoted to GE product, to the installation engineering and to other equipment scope owners.

.



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g3.3. BREAKDOWN LEVEL 2, EQUIPMENT UNIT A1, A2, AN, A3

3.3.1. General

In the process-related designation the first two alphabetic characters (A1 and A2) are used to distinguish the type of device as listed below:

Main Groups of Equipment Units, A1 :

A Mechanical equipmentB Mechanical equipmentC Direct Measuring circuitsD Closed-loop control circuitsE Analogue and binary signal conditioningF Indirect measuring circuitsG Electrical equipmentH Subassemblies of main and heavy machinery

Refer to Appendix B. Equipment unit code A1A2.

In the process-related designation in breakdown level 2, the numerical digits (AN) typically have no classification significance, with the exception of the items outlined in Appendix C.



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g3.3.2. Coding of process valves and pipes

The alphabetical characters assigned to piping and accessories in the second level are BR. Numbers must be, nominally, assigned in ascending units in the direction of the main flow (increasing in the downstream direction).

The pipeline or BR number must only be changed: When they have different functions from the point of view of process When there are changes in the process conditions (Pressure, Temperature, Flow) When there is a change of material Optionally when there is a change in diameter associating the reducer with the line of greater diameter

Changes in diameter caused by reducers for the purpose of inserting valves and instruments will be accepted, as long as the diameter of the inlet pipe is equal to the diameter of the outlet pipe.

The number of the line (in the second level) will not be modified when elements considered as integrating parts are installed in the line; for example, valves, temporary filters, expansion joints, restrictive orifices, flow elements, etc.

For reserved sequence numbers (AN) for BR units refer to Appendix C.

In the field, the interconnect piping is tagged by a coloured ring over marked with the first two letters or the three letters of the KKS system code.

a) VALVES

The process valves are identified in the first level with the code of its associated pipe (or equipment) and in the second level with the alphabetical characters AA.

In the same respect as the sequence numbers (AN) for BR units increase, the different valves will be numbered correlatively. An attempt will be made to adopt numbering that ascends in the direction of the main flow.

Appendix C reserves blocks of numbers (AN) specific to valve function in order to provide information concerning the type of valve that is being denominated.

With the exception of pilot valves shown on P&IDs, which use the main valve code plus the breakdown level A3, set to A, B, C, etc. in order of need. Refer to Appendix F, example number 5.

b) BYPASSES

In order of importance, denomination of a bypass is determined as follows: Consecutively within the corresponding decade in accordance with the numbering established in the

first level for the system to which they pertain (system bypasses). Consecutively within the corresponding unit numbering of sections in accordance with the numbering

established in the first level for the system to which they pertain (sub system or main equipment bypasses).

Fully integrated as part of the system to which they pertain (equipment bypasses or valve bypasses).

c) DRAINS AND VENTS

Drains and vents are denominated in the first level as a bypass of the system to which they are designed to drain or vent. Such denomination covers up to the last closing device or the discharge pipe to the atmosphere.

d) HEAT EXCHANGERS



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gBecause of their function, heat exchangers form part of at least two systems. However, because of the need to establish single identifications, they must be assigned to just one of the systems.Heat exchangers are assigned to the system that requires its services; the system that absorbs heat in the case of heaters and the system that gives out heat in the case of coolers.

e) IDENTIFICATION OF PIPING SYSTEMS

The following specifications are valid for identification and representation in P&IDs:Numbering in the first breakdown level is effected for parallel piping legs in increasing increments, counting in the flow direction.

A hollow needle represents delimitation of the system identification in the first breakdown level (F1F2F3FN).

For better recognition of the coding delimitation, the needle is not placed directly in the branching or junction point, but in the line concerned.

A solid needle represents delimitation of the piping identification or BR number in the second breakdown level (AN).

Identification of the piping systems is carried out using "flags". The direction of the "flag" is to indicate the flow direction. The flag shall contain the 1st Breakdown level. The unit code BR.. is written below the flag as follows:

LBA10

BR010

Flow direction

LBA20

BR010

Flow direction

If two flow directions are possible, lines are placed on both ends of the box.

LBA30

BR010

Flow direction

Please refer to Appendix C for (AN) ranges for BR codes.Refer to the Appendix F for specific rules and case study.



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g3.3.3. Coding of equipment

Labelling of equipment is done in two rows or blocks on a drawing. The top block is for the level one code (Refer to Appendix A). And the second block is for the second level code (Refer to Appendix B).

The legacy code or standard code used by suppliers, may be mentioned either in a third row or beside the tagging block.

FH30-1

For some components such as valves, in order to keep visibility of the drawing the label may only include the level 2 and referring to the level 1 of the system on which they are located to.

3.3.4. Measuring Point representation in P&I Diagrams

An oblong bubble typically represents the measuring points in a plant. These bubbles have 2 lines of coding inside them. On line 1 is the measurement type and the associated function(s) in the plant. On line 2 is the KKS tag of the instrument.

The legacy code or standard code used by suppliers, is mentioned either in a third line or beside the bubble.

Line 1: Function letter of the measuring pointaccording to paragraph 3.3.4 a

Line 2: KKS level 2 identification markof the measuring point

a) MEASUREMENT TYPE & FUNCTION (LINE 1)

To describe the measured variable and function, each measuring symbol is provided in line 1 with a number of identification letters. These identification letters are determined according to ISA S5.1. The first set of letters, identifies the measured variable. The second set of letters indicates the signal processing of the measured variable.

The ISA table below is used as appropriate for instrumentation use only. Note: Table and standards are copyright of Instrument Society Of America (1992). All rights reserved.



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gMeasuring Instruments

FIRST LETTER (GROUP 1) SUCCEEDING LETTERS (GROUP 2)MEASURED OR INITIATING VARIABLE

MODIFIERREADOUT OR PASSIVE FUNCTION

OUTPUT FUNCTION MODIFIER

A ANALYSIS ALARMB BURNER, FLAME, COMBUSTION USER'S CHOICE USER'S CHOICE USER'S CHOICE

C USER'S CHOICE CONTROL CLOSEDD USER'S CHOICE DIFFERENTIAL

E VOLTAGESENSOR (PRIMARY ELEMENT)

F FLOW RATE RATIO (FRACTION)

G USER'S CHOICEGLASS, VIEWING DEVICE

H HAND HIGHI CURRENT (ELECTRICAL) INDICATE

J POWER SCAN

K TIME, TIME SCHEDULETIME RATE OF CHANGE CONTROL STATION

L LEVEL LIGHT LOW

M USER'S CHOICE (MOISTURE) MOMENTARYMIDDLE, INTERMEDIATE

N USER'S CHOICE USER'S CHOICE USER'S CHOICE USER'S CHOICEO USER'S CHOICE ORIFICE RESTRICTION OPEN

P PRESSURE, VACUUMPOINT (TEST) CONNECTION

Q QUANTITY OR HEAT DUTYINTEGRATE, TOTALIZE

R RADIATION RECORDS SPEED, FREQUENCY SAFETY SWITCHT TEMPERATURE TRANSMIT

U MULTIVARIABLE MULTIFUNCTION MULTIFUNCTION MULTIFUNCTION

VVIBRATION, MECHANICAL ANALYSIS

VALVE, DAMPER, LOUVER

W WEIGHT, FORCE WELL

X UNCLASSIFIED X-AXIS UNCLASSIFIED UNCLASSIFIED UNCLASSIFIED

Y EVENT, STATE OR PRESENCE Y-AXISRELAY, COMPUTE, CONVERT

Z POSITION DIMENSION Z-AXIS

DRIVERS, ACTUATOR, UNCLASSIFIED FINAL CONTROL ELEMENT

b) Measurement counting range (Line 2)

On line 2 is the KKS tag of the instrument. The tags may omit the unit number (characters GF0) as long as there is no ambiguity for the site, and as long as the drawings are identical for several units. Counting is performed by the use of 3 numeric characters, thus a range 001-999 is available for each measurement type.Measurement coding is made according to Appendix C.Primary element which is not connected and is used for on site testing, sampling, or tuning, shall be tagged in the series of 8's.Primary element which is connected to a local control shall be tagged in the series of 1's.Primary element which is connected to a local instrument shall be tagged in the series of 5's.Primary element which is connected to a remote instrument shall be tagged in the series either of 0's (ana) or 3's (digital).Primary element which is connected to a local and a remote instrument, shall be consider as remote as the remote function is having a highest priority.

c) Place of Measured Value Processing

The place of measured value processing is identified by the following symbols:

Local measured value processing/monitoring



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Measured value processing/monitoring on the local control panel or sub panel (black box)

Measured value processing in the central control room (DCS)

d) Specific rules

Refer to the Appendix F for specific rules and case study for instrumentation application.

3.3.5. Electrical equipment

The electrical equipment are coded with A1 as G, refer to Appendix B. The AN sequence number does not have a specific meaning except for the below exceptions.

Refer to part E for specific requirements for tagging electrical systems and equipment.



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g

3.4. BREAKDOWN LEVEL 3, ITEM B1, B2, BN

3.4.1. General

Level 3 is further breakdown of KKS coding to designate unique components of a larger assembly as a whole. Below is an example of a complete Blower coded as AN in level 2. It shows the driving motor and the blower itself as mechanical component.

KN01

M -M01

88BL-2

SAE43

AN001

Alphabetic characters at this breakdown level are :

Main Groups of items, B1 :

K Mechanical itemsM Mechanical items Q Instrumentation and control items X Signal related to its originY Signal related to its applicationZ Signal gated (internal variable)- Electrical items

At this breakdown level the numerical digits are used for counting only.

See Appendix D for list of mechanical and I&C B1B2 codes.See Appendix E for list of electrical B1B2 codes.



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g3.4.2. Signals

The list of signal B1B2 codes and relevant rules of usage are described in Part F documentation.



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g

APPENDIX A: ELEMENTAL SYSTEMS CODE

Main Functional Groups, F1:

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 the function codes C is insufficient for the identification)

E Conventional Fuel Supply and Residue Disposal

F Handling of Nuclear Equipment

G Water Supply and Disposal

H Conventional Heat Generation

J Nuclear Heat Generation

K Nuclear Auxiliary Systems

L Steam, Water and Gas-Cycles

M Main Machine Sets

N Process Energy supply for External Users (e.g. District Heating)

P Cooling Water Systems

Q Auxiliary Systems

R Gas Generation and Treatment Systems

S Ancillary Systems

U Structures

W Solar Systems

X Heavy Machinery (not main machine sets)

Z Workshop and Office Equipment



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gThe list below are the main systems used in the thermal Power Plant and is only given for information. Please refer to the Part C for exact scope and assignment of each system trigrams and system numbering.

F1 F2 F3 SYSTEMS DESCRIPTION

ACA SWITCHYARD 380KV-420KV

ADA SWITCHYARD 220KV-245KV

AEA SWITCHYARD 110KV-150KV

AFA SWITCHYARD 60KV-72KV

AGA SWITCHYARD 45KV-50KV

AHA SWITCHYARD 30KV-35KV

AJA SWITCHYARD 20KV-25KV

AQA Energy metering

ARA GRID & DISTRIBUTION PROTECTION EQUIPMENT

ASU GRID & DISTRIBUTION DECENTRALIZED PANEL & CABINET

AXP Cathodic protection system

BAA GT & ST Generator power evacuation

BAB GT & ST Generator foundation cabinet

BAC GT & ST Generator circuit breaker

BAT Generator Step-up Transformer

BAU Grounding network

BAY Electrical Protections and Control

BBA Normal MV switchgears

BBB MV non segregated phase bus bars

BBT Auxiliary Transformers

BDA Emergency MV distribution

BDT Emergency MV transformer

BFA Normal LV switchgears # A

BFB Normal LV switchgears # B

BFC Normal LV switchgears # C

BFD Normal LV switchgears # D

BFE Normal LV switchgears # E

BFF Normal LV switchgears # F



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gF1 F2 F3 SYSTEMS DESCRIPTION

BFT MV/LV distribution transformers

BJA Normal LV motor control centres

BLA Normal lighting switchgears

BLE Welding panel

BLL Normal lighting panel

BLS Safety lighting

BLT Normal lighting transformers

BMA Emergency LV switchgears

BMB Emergency LV switchgears

BMC Emergency LV switchgears

BMT MV/LV transformers for Emergency LV distribution

BNA Emergency 2ndary switchgears

BNB Emergency 2ndary switchboards

BNT MV/LV transformers for Emergency 2ndary LV distribution

BRA Permanent 230 V production and distribution board

BRB Unit 230 V production and distribution board

BRT 400/230 V bypass transformers

BRU Permanent 230 V production and distribution inverters

BTA Up to 230 VDC production & distribution

BTB 250 V Battery

BTC DC 48 V production and distribution

BTL DC 125 V power production - Battery Charger

BTM DC 250 V power production - Battery Charger

BUA DC 125 V power distribution

BUB DC 250 V power distribution

CAA PROTECTIVE INTERLOCKS

CBP Generator Synchronisation & Coupling

CCA BINARY SIGNAL CONDITIONING

CDA DRIVE CONTROL INTERFACE

CEA ANNUNCIATION AND ALARMS

CFA RECORDING, MEASUREMENTS

CGA CLOSED-LOOP CONTROL (EXCL. POWER SECTION)

CHA PROTECTION

CJA UNIT CONTROL SYSTEM (overall block automation)

CJD START UP CONTROL, SETPOINT CTRL



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CJF BOILER CONTROL SYSTEM

CJJ STEAM TURBINE CONTROL CABINET

CJP GAS TURBINE CONTROL CABINET

CJY UNIT CONTROL SYSTEM SAFETY (overall block automation)

CKA ON LINE AND DIAGNOSTIC COMPUTER

CKJ ACCESS CTRL COMPUTER

CSA DCS I/O CABINETS

CSY DCS I/O CABINETS for SAFETY

CVA marshalling boxes and cubicles

CWA Control room: control consoles

CWF Control room: control panels

CWQ Control room: printers

CXA LOCAL CONTROL STATIONS

CYA Telephone system

CYB Loudspeaker System

CYD Data Communication Systems

CYE Fire fighting control system

CYF Time distribution, clock system

CYQ Gas detection system

CYN Interphone

EGA Fuel-oil unloading

EGB Fuel-oil storage

EGC Pumping system

EGD Fuel-oil piping

EGS Fuel-oil treatment

EGT Heating medium system

EKA Inlet Pipe line

EKC Heating

EKD Gas feeding (Common site gas station, RMS)

EKE Gas scrubber

EKG Gas piping

EKH Main pressure boosting system

EKT Gas heating (CC) (gas heater) (heating media (systems)

GAC Piping. Tank connection = Raw Water System

GAD Water pump tank



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GAF Raw water pumping (intake) (Pumping)

GBK Water treatment system

GCF Reverse osmosis + EDI aux. Equipment

GCN Chemical dosing water treatment plant

GDD Pretreatment and aux. Equipment

GDF Reverse osmosis system and aux. Equipment

GDQ Potable water production plant

GHA Service water

GHC Demineralised water storage and distribution

GKB Drinking water

GMA Waste Water (Oily)

GMB Miscellaneous Process Water Drains and Blowdown

GMT Process drainage system (GT water wash drain)

GNK Process drain treatment

GRK waste water treatment

GUA Rain water collection and drainage

HAC HRSG economiser

HAD HRSG evaporator

HAG HRSG circulation

HAH HRSG Superheater

HAJ HRSG reheat steam

HAN HRSG Pressure system drain and venting

HBs HRSG Support, structure, enclosure and interior

HBK HRSG interior

HCs HRSG soot blowing and flushing

HDs HRSG ash and slog removal

HHs HRSG main firing system

HJF HRSG fuel oil preparation and recovery

HJG HRSG Gas Pressure Reduction And Distribution

HJQ HRSG burners sealing air and flame scanner cooling

HLB HRSG forced draught fan system

HNA HRSG Exhaust Ducting system

HNE HRSG Outlet stack

HNY HRSG Flue gas exhaust control and protection equipment

HSJ HRSG NOx catalytic reduction



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HYA HRSG control and protection

HYC HRSG safety

HYR HRSG analogue control and instrumentation

LAA Feedwater Storage and deaeration

LAB Feedwater piping

LAC Feedwater pumping

LAE HP Desuperheating

LAF IP Desuperheating

LAV Lubricant supply

LAW Sealing fluid supply

LBA Main steam

LBB Hot reheat steam

LBC Cold reheat steam

LBD Extraction / Low pressure steam

LBG Auxiliary steam distribution

LCA Condensate piping

LCB Condensate pumps

LCC Main condensate heating system

LCE Condensate desuperheating spray system

LCP Condenser make-up (Stand by condensate system storage and piping)

LCR Stand by condensate system distribution

LDs Condensate polishing plant

MAA Steam turbine itself (HP Part)

MAB Steam turbine ( IP Part)

MAC Steam turbine ( LP Part)

MAD Steam turbine Bearings

MAG Main Condenser

MAJ Condenser vacuum

MAK ST Standby turning gear

MAL Steam and Drains

MAN Turbine bypass station

MAP Turbine bypass piping and steam dump

MAV ST lubrication, jacking oil

MAW ST Turbine gland steam sealing

MAX ST control fluid skid for governing & protection



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MAY ST protection

MBA Compressor and Turbine itself (if MBC not used)

MBB Turbine casing and rotor

MBC Compressor casing and rotor

MBD Bearings

MBE Coolant System

MBH Cooling and sealing gas system

MBJ Start-up unit and static frequency converter

MBK Transmission gear (incl Turning gear)

MBL Intake air, cold gas system (open cycle)

Anti icing

Bleed heating

MBM Combustion Chamber

MBN Liquid Fuel System

MBP Fuel-gas system

MBR Exhaust gas

MBT Motive gas generation unit

MBU Additive system

MBV GT and generator lubrication/oil transfer and vent

MBW Sealing oil supply system

MBX Control fluid

MBY Logic and analogue control

MKA Generator complete

MKC Generator excitation & automatic voltage regulator

MKD Generator Bearings

MKF Generator stator and rotor liquid cooling

MKG Generator H2 cooling

MKH ST generator Nitrogen cooling system

MKQ Generator exhaust gas system

MKV Generator lubricant oil system

MKW Generator sealing fluid supply

MKX Generator fluid supply system for control

MKY Generator protection system (mech protection which trip Generator)

MVs Lube oil treatment system

NAA Piping system (steam)



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NAB Piping system (condensate)

NAD Process heat transmission system

NDA Piping system (forward)

NDB Piping system (return)

NDC Process hot water pump system

NDD Process heat transfer

NDE Hot water storage system

NDF Distribution system

PAA Main Cooling water filtration

PAB Main cooling Piping

PAC Main Cooling water pumping

PAD Outfall Cooling system

PAE Cooling Tower

PAH Condenser cleaning system

PAR Make up water piping system

PAS Make up water pump system

PBN Main Cooling water chemical supply system (conditioning)

PCA Intake and cleaning facilities

PCB Piping

PCC Pumping

PCD Cooling tower (secondary cooling)

PGB Piping

PGC Pumping

QCA O2 scavenger system

QCB Amine system

QCC Phosphate system

QCD Corrosion inhibitor system

QCE Antifreeze agent system

QFA Instrument and Control air production (if separate from SCA)

QFB Instrument and Control air distribution

QHA Auxiliary steam production (auxiliary boiler)

QHE Blowdown system, flash drain system

QHH Auxiliary boiler burners

QJA Nitrogen storage and distribution system

QJB Hydrogen storage and distribution system



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QJC CO2 storage and distribution system

QLB Auxiliary steam distribution ( from auxiliary boiler)

QUA Chemical control and sampling

RSA Condensing and feed water heating plant cleaning (temporary)

RSB Steam blowing piping (temporary)

RSC HRSG cleaning (temporary)

SAA Building ventilation

SAC ST generator and compartment ventilation

SAD ST forced air cooling

SAE,SAF GT and generator compartment ventilation

SAK Building air conditioning, heating and ventilation

SAL GT control compartment air conditioning

SAM Turbine hall ventilation

SAU Building heating

SBB Electrical heat tracing

SCA Compressed air production

SCB Service air distribution

SCC Stationary compressed air system

SDL (Lube oil cleaning)

SDP (Liquid fuel purges)

SDT (Washing skid and distribution)

SGA Fire fighting water systems

SGC Spray deluge systems

SGE Sprinkler systems

SGG Tank roof, tank shell cooling system

SGJ CO2 fire fighting systems

SGK Gaseous clean agents fire fighting systems (FM200)

SGL Powder fire fighting system

SGY Control and detection system

SMA Cranes and Hoists Steam turbine & Generator

SMB Cranes and Hoists Gas turbine

SMC Cranes and Hoists

SNA ELEVATORS

SQA ROAD INSTALLATION

STA WORKSHOP, LABORATORY EQUIPMENT



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UAA Structures for Switchyard structures

UBA Structures for Switchgear building

UBE Structures for MV aux transformers

UBF Structures for Generator transformers

UBG Structures for Start up transformer

UBH Structures for Oil collecting pit

UCA Plant control room building

UCB Control station building

UEJ Structures for Liquid fuel facilities

UEN Structures for Gas fuel facilities (except Regulating and Metering Station)

UER Structures for Gas fuel facilities (RMS)

UGA Structures for Raw water supply

UGC Structures for Waste water

UGD Structures for demineralised water

UGF Structures for fire protection water

UGG Structures for drinking water

UGH Structures for rain water

UGU Structures for effluents

UHA Heat recovery steam generator structures

UHB Heat recovery steam generator enclosure structures

UHN Smoke stack and chimney Str.

UHW HRSG blowdown Str.

ULA Structures for feedwater pumps house

UMA Structures for Steam turbine

UMB Structures for Gas Turbine

UMC Main Turbine Hall

UMJ Diesel generator building

UPC Structures for Circulating cooling water intake

UQA Structures for Circulating and Cooling water pump house

URA Structures for Cooling towers and basin

URD Structures for Cooling tower water pump house

URE Structures for towers auxiliary services building

USA Structures For HVAC

USC Structures For Compressed air

USD Structures For Ancillary Systems free for use



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UTH Auxiliary boiler building

UYA Structure for Offices building

UYF Structure for access control building, gate house

UZA Roads, paths

UZJ Fences

UZJ Outdoor area

XKA Emergency LV power supply

XKB Emergency MV power supply



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gAPPENDIX B: EQUIPMENT UNIT CODE

Main Groups of Equipment Units, A1:

A Mechanical equipment (with moving parts)

B Mechanical equipment (without moving parts)

C Direct Measuring circuits

D Closed-loop control circuits

E Analogue and binary signal conditioning

F Indirect measuring circuits

G Electrical equipment

H Subassemblies of main and heavy machinery

A1 A2 :

A1A2 KKS DESIGNATION EXAMPLES

A Mechanical equipment:AA Valves, dampers, etc., incl. actuators, also manual; rupture disk

equipmenthand valve, check valve, pressure

safety valve, solenoid valve, motorised-valve, operated valve

AB Isolating element, air locksAC Heating, cooling and air conditioning units Heat exchanger, AE Turning, Driving, Lifting, and slewing gearAF ConveyorsAG Generator unitAH Heating, cooling and air conditioning unitAM Mixer, agitatorsAN Compressor units, fansAP Pumps unitsAS Adjusting and tensioning equipment for non-electrical variablesAT Cleaning, drying, filtering and separating equipment Filter, Separators, knock out

drum.AU Braking, gearbox, coupling equipment, non electrical convertersAV Combustion equipmentAW Stationary tooling, treatment equipmentAX Test and monitoring equipment for plant maintenance



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gB Mechanical equipment:BB Storage equipment vessels and storage tanksBE Shafts (for erection and maintenance only)BF FoundationsBN Jet pumps, ejectors, injectorsBP Flow restrictors, limiters (incl. rupture disk equipment), orifices (not

metering orifices)BQ Hangers, support, racks, piping penetrationBR Piping, ductwork, chutesBS SilencersBU Insulation, sheathingC Direct measuring circuitsCD DensityCE Electrical variables Current, voltage, energy,

frequencyCF Flow, rate flow transmitter, flow meter, flow

switch, flow orifice, flow venturi, flow valve, flow controller

CG Distance, length, position, direction of rotation position transmitter, potentiometer, end switch

CH Manual input as manually operated sensor Fire manual call pointCK TimeCL Level (also for dividing) level control valve, level

transmitter, level gauge, level switch, level controller

CM Moisture, humidity dew point transmitterCP Pressure pressure transmitter, gauge,

switch, pressure controller, pressure valve

CQ Quality variables (analysis, material properties), other than CD, CM, CV

CO2 concentration in flue gas, contaminant concentration

Partial discharge measurementCR Radiation variablesCS Velocity, speed, frequency (mechanical), acceleration Shaft line measurementsCT Temperature temperature transmitter,

thermocouple, temperature switch, glass thermometer, wells, temperature controller, temperature valve

CU Combined and other variables corrected valuesCV ViscosityCW Weight, massCX Neutron fluxCY Vibration, expansionD Closed loop control circuits (2)E Analog and binary signal conditioning (2)F Indirect measuring circuits (2)G Electrical equipment:GA Junction boxes and cable/bus bar penetrations For voltage over 1kV (1)GB Junction boxes and cable/bus bar penetrations For voltage equal or less than

1kV (1)GC Junction boxes and cable/bus bar penetrations Contain at least a control signal

(1)GD Junction boxes and cable/bus bar penetrations Contain at least a conventional

instrument signal (1)



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gGE Junction boxes and cable/bus bar penetrations Contain Frequency based signals,

serial links, networks, FFB,etc. (1)

GF Junction boxes and cable/bus bar penetrations Not usedGG Junction boxes and cable/bus bar penetrations Not usedGH Electrical and instrumentation and control installation units identified

as per process system (e.g. cubicles, boxes)Generic electrical and electronic

enclosure, cubicles, cabinet, panel,etc. (1)

GK Information display and operator ctrl equipment for process computers and automation systems

Printer, Video screen, Keyboards, Computer drive, Operator station or interface unit

GL Limiting equipmentGN Network equipmentGR DC generating Battery, rectifierGS Electrical equipment: switchgear equipment (if not identified under

process equipment)GT Transformer equipment Voltage transformer

Current transformerWinding, Coil

GU Convector equipmentGV Structure-related earthing and lightning protection equipment, surge

arrestorssurge arrestor, surge capacitor

GW Power supply equipmentGZ Hangers, supports and racks for electrical and instrumentation and

control equipmentFrame, Enclosure, support, field

instrument panel

(1) Refer to Part E(2) Refer to Part F



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gAPPENDIX C:AN RESERVED COUNTING RANGES

AA Counting range Valve type

001-199 Main manual or process check valves

200-299 Pneumatic & Hydraulic control valves (regulating or on/off)

300-399 Motor-driven process valves

400-499 Electric process valves

500-599 Manual drain and vent valves

600-699 Self-regulating valves (pressure, temperature, level, etc.)

700-799 Instrument root valves

800-899 blocked

900-999 Safety and relief valves

BR Counting range Type of Piping

001-199 Main process, any type

200-299 Drain & Vent, any type

300-399 Instrument as long piping run

400-499 Sample & metering

500-599 test

600-699 blocked

700-799 blocked

800-899 blocked

900-999 blocked

Cx Dx Counting range Measurement type

001-099 Remote Analog

100-199 local control

200-299 blocked

300-399 Remote Binary (or local with)

400-499 blocked

500-599 Local indicator/gauge

600-699 blocked

700-799 blocked

800-899 test tapping point

900-999 Combined data



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gAPPENDIX D:MECHANICAL COMPONENT B1B2 CODE

A1A2 KKS DESIGNATION Remarks

K Mechanical component:KA Valves, dampers, cocks, rupture disks, orifices. globe valve, gate valve, KB Gates, doors, dam boardsKC Heat exchangers, coolersKD Vessel, tank, pools, surge tankKE Turning, Driving, Lifting, and slewing gearKF Continuous conveyors, feedersKJ Size reduction machinesKM Compacting, packaging machinesKN Compressors, blowers, fansKP PumpsKT Cleaning, machines, dryers, separators, filtersKV Burners, gratesKW Stationary tooling and treatment machines for maintenanceM Mechanical component:MB BrakesMF FoundationsMG Gear boxesMK Clutches, couplingsMM Engines, not electricalMQ Permanent connectionMR Piping components, ductwork componentsMS Positioners, not electricalMT TurbinesMU Transmission gear, non electrical, converters and boosters other than

couplings and gearboxesQ Instrumentation and control component (non electrical)QB Sensor if not structurally integral with *QP*, metering orificesQH Signalling devicesQN Controllers, fly bolt governorQP Measurement instruments, testing equipmentQR Instrument pipingQS Condensation chambers (datum reservoir) in measuring circuitsQT Thermowells and pockets for protection of sensors



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gAPPENDIX E:ELECTRICAL COMPONENT B1B2 CODE

B1B2 KKS DESIGNATION

-A Electrical components: assemblies and subassemblies

-B Electrical components: transducers for non-electrical to electrical variables and vice-versa

-C Electrical components: capacitors

-D Electrical components: binary elements, delay devices, memory devices

-E Electrical components: special components

-F Electrical components: protective devices

-G Electrical components: generators, power supplies, inverters

-H Electrical components: signalling devices

-K Electrical components: relays, contactors

-L Electrical components: inductors

-M Electrical components: motors

-N Electrical components: amplifiers, controllers

-P Electrical components: measuring instruments, testing equipment

-Q Electrical components: power switchgear

-R Electrical components: resistors

-S Electrical components: switches, selectors

-T Electrical components: transformers

-U Electrical components: modulators, convertors from electrical to other electrical variables

-V Electrical components: tubes, semiconductors

-W Electrical components: transmission paths, waveguides, aerials

-X Electrical components: terminals, plugs, sockets

-Y Electrical components: electrical positionners, e.g. Solenoids (not motor)

-Z Electrical components: terminations, balancing equipment, filters, limiters, cable terminations, equalizers, hybrid transformers



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gAPPENDIX F:EXAMPLES IN USE AND CASE STUDY

1 Redundant instrument:

Redundant instrument measuring the same processing value are segregated by the A3 code

MBP70 CP003A redundant remote pressure measurementMBP70 CP003B redundant remote pressure measurementMBP70 CP003C redundant remote pressure measurement

2 Measurement of identical process value used in different control loops:

Multiple instrument at the same point of installation measuring values used for different control loops or controllers, they are differentiated by the AN code.

MBP70 CG311 limit switch closedMBP70 CG312 limit switch open

3 Multiple measuring circuits housed in the same body

This pertains to thermocouple having several sensors housed in the same body in order to get a back up instrumentationin case of failure of the main. This is avoiding dismantling the thermocouple by stopping the system. Each sensor is a component of the thermocouple and is tagged as follow on circuit diagrams: MBP70 CT001B01MBP70 CT001B02MBP70 CT001B03

In the P&IDs this thermocouple is shown as a unique control point as MBP70 CT001.

4 Equipment or Piping mounted in parallel:

The example codes below show the different methods for changing coding for items in parallel on a P&ID.

Example for Piping Line, 3 pipes in parallel depending on the importance of the lines it will change the Level 1 (decade or unit) or the level 2:

MBA10 BR001 OR MBA11 BR001 OR MBA11 BR001MBA20 BR001 MBA12 BR001 MBA11 BR002MBA30 BR001 MBA13 BR001 MBA11 BR003



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gExample for Equipment: (3 pumps in parallel)

MBA10 AP001 OR MBA11 AP001 OR MBA11 AP001MBA20 AP001 MBA12 AP001 MBA11 AP002MBA30 AP001 MBA13 AP001 MBA11 AP003

5Change in system coding for actuating instruments (pilot valves)

6 example of a relief valve and relevant lines

7 example of ISA coding

a) A pressure switch on a pressure very high alarm.

LBA10CP101

PSAHH

b) A level transmitter used to make a remote indication.

LBQ20CL001

LTI



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gc) A temperature switch used to make an alarm and an automatic control:

LBQ20CT101

TSLH

d) A thermowell for maintenance

LBQ20CT801

TW

e) A pressure gauge

LBQ20CP121

PI

8 Instrumentation Valves

The piping valves are always shown on the P&ID.Instrumentation valves could be omitted on the P&ID. (Implicit Instrumentation component) if considered as a component of the instrument

PI

LBA11

BR010

LBA11CP001

LBA11

AA702

LBA11

AA701

Piping Limit

LCQ20

BR010

LCQ20

AA701

PSH

LCQ20CP301

LCF10

BR010

TI

LCF10CT551



389A9076_D.doc

08.2.7-Kks Ge Standard Codification Identification Handbook-389a9076_d

Documents

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ge power system application

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appendix b