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Standard for Piping and Instrumentation Drawings GP 01-87-01 Version 1 March 2002 Scope This Global Practice (GP) contains ExxonMobil Pipeline Company's (EMPCo) standard governing Piping and Instrument Diagrams (P&ID) for layout and other requirements; piping, equipment, and instrument designations (letters, numbers, and symbols); and piping, equipment, and instrumentation information.

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  • Standard for Piping andInstrumentation Drawings

    GP 01-87-01

    Version 1

    March 2002

    Scope

    This Global Practice (GP) contains ExxonMobil Pipeline Company's (EMPCo) standard governing Pipingand Instrument Diagrams (P&ID) for layout and other requirements; piping, equipment, and instrumentdesignations (letters, numbers, and symbols); and piping, equipment, and instrumentation information.

  • GP 01-87-01 Standard for Piping and Instrumentation Drawings March 2002

    All Business Sectors ExxonMobil Pipeline Company Page 2 of 55For ExxonMobil Use Only Version 1

    Table of Contents

    Table of Figures.......................................................................................................................... 4

    Table of Tables............................................................................................................................ 6

    1. Required References ....................................................................................................... 7

    1.1. Global PracticesExxonMobil Engineering Practices........................................ 71.2. ASMEAmerican Society of Mechanical Engineers .......................................... 71.3. IEEEInstitute of Electrical and Electronics Engineers ..................................... 71.4. ISAInstrumentation, Systems, and Automation Society.................................. 71.5. ABNTAssociao Brasileira De Normas Tcnicas .......................................... 8

    2. Additional Requirements ................................................................................................ 8

    3. Purpose ............................................................................................................................... 8

    4. P&ID Overview................................................................................................................... 9

    4.1. Readability................................................................................................................ 94.2. Compliance/New Symbols or Identifications ....................................................... 94.3. General P&ID Requirements ................................................................................. 9

    5. Layout Requirements.....................................................................................................10

    5.1. General....................................................................................................................105.2. P&ID Separation....................................................................................................105.3. Arrangement...........................................................................................................105.4. Direction..................................................................................................................12

    6. Primary Piping..................................................................................................................12

    6.1. Piping Description .................................................................................................126.2. Line Number and Piping Description..................................................................13

    7. Equipment Designation.................................................................................................26

    8. Instrument Symbols and Identification .....................................................................31

    8.1. General....................................................................................................................318.2. Functional Identifications ......................................................................................328.3. Balloons and Other Instrument Symbols ...........................................................378.4. Valves......................................................................................................................398.5. General Instruction for Flow Computers ............................................................408.6. Pump Unit Lockout Devices.................................................................................41

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    9. Function Designations ..................................................................................................42

    10. Loop Identification..........................................................................................................44

    10.1. Loop Number..........................................................................................................4410.2. Loop Identity...........................................................................................................44

    11. P&ID Examples ................................................................................................................48

    Record of Change....................................................................................................................54

    Attachment: Purpose Codes Definitions ..........................................................................55

  • GP 01-87-01 Standard for Piping and Instrumentation Drawings March 2002

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    Table of Figures

    Figure 1: Flow Sheet Format................................................................................................11

    Figure 2: Line Size and Pressure Rating ..........................................................................12

    Figure 3: Line Number Description ....................................................................................15

    Figure 4: Instrument Identification.....................................................................................31

    Figure 5: Other Information Added to Balloon................................................................32

    Figure 6: Instrument Representation.................................................................................37

    Figure 7: Instrument Tagging ..............................................................................................37

    Figure 8: Additional Valve Information .............................................................................40

    Figure 9: Flow Computer ......................................................................................................41

    Figure 10: Unnecessary Function Designation ..............................................................42

    Figure 11: Identification Letters Ending with "Y"...........................................................42

    Figure 12: Protective Devices on Pumping Unit.............................................................42

    Figure 13: Loop Identification..............................................................................................44

    Figure 14: Single Loop (Closed) .........................................................................................45

    Figure 15: Single Loop (Open).............................................................................................45

    Figure 16: Instrument Common to Two or More Loops ...............................................46

    Figure 17: Instrument Common to Two+ LoopsNo Loop Priority ...........................47

    Figure 18: Combination of Two or More Loops..............................................................47

    Figure 19: Instrument Performing Two or More Functions .........................................48

    Figure 20: Pipeline Pump Station .......................................................................................49

    Figure 21: Pipeline Meter Station........................................................................................49

    Figure 22: Typical Tank Farm Flow Sheet........................................................................50

    Figure 23: Typical Loading Rack Flow Sheet..................................................................51

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    Figure 24: Turbine Meter with Digital Control Valve......................................................52

    Figure 25: P.D. Meter with Mechanical Preset.................................................................52

    Figure 26: Storage Tank........................................................................................................53

    Figure 27: O/W Separator......................................................................................................53

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    Table of Tables

    Table 1: Service and Product Abbreviation .....................................................................14

    Table 2: Line Symbols ...........................................................................................................16

    Table 3-A: Valves, Fittings, and Equipment Symbols ...................................................17

    Table 4: Equipment Designations ......................................................................................26

    Table 5: Required Equipment Specifications ..................................................................28

    Table 6: Functional Identifications.....................................................................................33

    Table 7: Instrument Symbols ...............................................................................................38

    Table 8: Pump Unit Lockout Devices and Set Points....................................................41

    Table 9: Function Designations Commonly Used by EMPCo ....................................43

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    1. Required ReferencesThis Section lists Practices and Standards that are referenced and assumed to be a part of this document.Unless otherwise specified herein, use the latest edition.

    1.1. Global PracticesExxonMobil Engineering Practices

    GP 01-77-01 Drawing Format and Numbering

    1.2. ASMEAmerican Society of Mechanical Engineers

    ASME Y32.11 Graphical Symbols for Process Flow Diagrams in the Petroleum andChemical Industries R(1998)

    1.3. IEEEInstitute of Electrical and Electronics Engineers

    IEEE C37.2 Standard Electrical Power System Device Function Numbers and ContactDesignations (ANSI/IEEE)

    1.4. ISAInstrumentation, Systems, and Automation Society

    ISA 5.1 Instrumentation Symbols and Identification

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    ||Start Pipeline Americas South Only

    1.5. ABNTAssociao Brasileira De Normas Tcnicas

    ABNT NBR 8190 Simbologia de Instrumentacao

    ABNT NBR 8896 Simbolos Graficos Para Sistemas e Componentes Hidraulicos ePneumaticos - Simbolos Basicos e Funcionais

    End Pipeline Americas South Only||

    2. Additional RequirementsVendor shall comply with all local, state, and federal rules and regulations.

    ||Start Pipeline Americas South OnlyDimensions, nomenclatures, and symbologies may also be expressed in local language and standard units(e.g., Decimal Metric System) and/or other, depending upon local legal or common standards used byindustry.

    End Pipeline Americas South Only||

    3. PurposePiping and Instrument Diagrams (P&ID) are an Operations Integrity Management System (OIMS)required document of a facility's equipment and operation. As control documents, they are required byOIMS to be kept up to date, accurately reflecting a facility's current equipment and operation. In additionthey serve as the primary design documents for Engineering to:

    1) Communicate project design requirements (e.g., scope of work, the concept of control and operation,safety, equipment, piping requirements, instruments, etc.) with outside consultants, vendors,management, operational personnel, etc.

    2) Aid in the initial design phase by surfacing concept flaws that could result in needless and costlydesign errors

    3) Coordinate the specification and procurement of all materials

    4) Precipitate the ideas of all designers and management into a common objective

    5) Use as a HAZOP review, start-up, and operating tool, as well as a document of record for in-placefacilities

    6) Provide a basis for making equipment take off, equipment tagging, and equipment data lists

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    4. P&ID Overview

    4.1. ReadabilityThe P&ID should be simple and easy to read. It is intended to provide sufficient information to enableanyone to understand the operating concept without going into all the details of instrumentation.Therefore, the internal component or detailed specification of the instrument should be left out of theP&ID.

    4.2. Compliance/New Symbols or Identifications1) The P&ID should be prepared in accordance with this Global Practice. The Engineer must not create

    any symbols, identifications, or abbreviations.

    2) If new symbols or identifications are needed, the Engineer shall define them in accordance with ISA5.1 and this GP and secure approval from the ExxonMobil Pipeline Standard Steering Committeeprior to the application.

    4.3. General P&ID Requirements1) The P&ID should show all major equipment, piping, instrumentation, brief control and operating

    logic, and all safety devices, including installed spares. However, it is common practice to omitcommon instruments, such as relays, switches, alarms, light indications, on and off controls, etc.,unless they provide a key function.

    2) The system flow should enter from the left and exit to the right side of a drawing.

    3) The scraper trap should be included in the station P&ID.

    4) The OCC instrument or equipment should not be shown on the P&ID. Only the telemetered signalsfrom or to OCC should be shown on the P&ID.

    5) If a project is to upgrade the existing facility for which no P&ID has been prepared, the Engineermust prepare a new P&ID to reflect both the existing and new facilities. New equipment and/or logicto be added to the existing P&ID should be "bubbled" or "clouded" to highlight what is new. The"bubble" is a series of connected curved lines. A revision number should be placed within the"bubble."

    6) Brief specifications for all major pieces of process, electrical, and mechanical equipment should beincluded in the P&ID (see Section 5 for details).

    7) Prior to design review and/or HAZOP review, a preliminary P&ID should be essentially completewith all operating logic, equipment specification, design parameters, and safety devices, and it shallbe approved before other drawings (except plot plan) are begun. An "As-Built" P&ID shallincorporate all the changes that have been made during details design or construction.

    8) If spare is available, insulation and heat tracing requirements should be indicated for all equipment,instrumentation, and piping. The insulation and tracing data should include the thickness, type, andpurpose for the insulation (e.g., personnel protection, energy conservation, process stability, steamtracing, electric tracing, etc.).

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    5. Layout Requirements

    5.1. GeneralWhere a piece of equipment contains complex auxiliary systems (e.g., a vapor recovery unit), thesesystems may be drawn on separate P&ID to avoid congestion.

    5.2. P&ID Separation1) If enough space is not available to include all necessary information in one drawing, the P&ID may

    be separated into several sheets of the drawings as follows:

    a) Tank farmb) Pump(s) and related control and piping manifoldc) Loading rack

    d) Auxiliary systems i) Vapor recovery/combustion system ii) Off spec product system

    2) The number of pieces of equipment per P&ID should be limited to logical groupings per the above. Ifthis results in congestion and/or precludes adequate space for design evolution and/or future revision,subgrouping should be considered.

    3) Interconnecting lines from sheet to sheet (i.e., primary piping, instrument lines, etc.) shall be laid outso that they line up from one sheet to the next. Each line should have a connector that referencesassociated lines on the next or previous drawings.

    4) To avoid congestion and provide space for design evolution and future revision, utility and auxiliaryservice systems may be shown on separate drawings. Primary piping P&ID tie-ins and take-offs toutility and auxiliary service system P&ID are indicated with a note or abbreviation.

    5.3. Arrangement1) Arrangement of equipment, instruments and piping on drawings is to be done in tiers as follows:

    a) Tier 1 (Top): Process equipment such as vessels, tanks, provers, heat exchangers, heaters, filters,and instruments such as flow computer

    b) Tier 2 (Middle): Primary piping, in-line equipment, and associated instrumentationc) Tier 3 (Bottom): Transfer equipment such as pumps, compressors, etc.

    2) See Figure 1 for examples of arrangement.

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    Figure 1: Flow Sheet Format

    FIR

    M N

    AM

    E:

    X

    PR

    OJ.

    NO

    .

    X

    PL

    OT

    :

    F

    ILE

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    X

    X

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    V.

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    X

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    OM

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    NY

    , U.S

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    ISIO

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    arke

    ting

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    artm

    ent

    Dis

    tribu

    tion

    TER

    MIN

    AL

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    OJE

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    FLO

    W S

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    X

    DR

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    N B

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    CH

    KD

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    FIR

    MD

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    UIP

    ME

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    TIE

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    TA

    NK

    S, V

    ES

    SE

    LS A

    ND

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    R P

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    SS

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    UIP

    ME

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    R 2

    PR

    IMA

    RY

    PIP

    ING

    , IN

    -LIN

    E E

    QU

    IPM

    EN

    TA

    ND

    AS

    SO

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    D IN

    ST

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    NT

    AT

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    R 3

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    MP

    S, C

    OM

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    TR

    AN

    SF

    ER

    EQ

    UIP

    ME

    NT

    01

    23

    INC

    HE

    S

    (Click on figure for horizontal view.)

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    5.4. Direction1) Direction of flow shall be shown on all lines.

    2) Corners of flow lines should be square. Crossings should be avoided wherever possible. Horizontalprimary flow lines have priority. Therefore, the vertical primary flow lines are shown broken at thecrossings. Vertical flow lines have priority over horizontal instrument signal lines and are not to bebroken at the crossings. Secondary lines, including instrument, shall follow the same convention withrespect to each other, as shall primary flow lines.

    3) Primary flow lines inside the P&ID are shown by solid arrows, while the lines entering or leaving theP&ID are shown by hollow arrows with the appropriately referenced P&ID Number or Line Number(see Table 2).

    4) Utility and service flows are an exception to the above. These flows should be drawn with a line anddenoted with type of supply as shown in Table 2 (see Section 6.2 for line numbers).

    5) To facilitate reading the P&ID, the primary flow lines should be identified using a heavy weight line.Noticeably lighter weight lines should be used for all other lines and symbols (see Table 2).

    6. Primary Piping

    6.1. Piping DescriptionAll primary piping should be described with the following information when applicable:

    1) Line size and pressure ratingchanges in pressure rating (spec break) should be shown by a dottedline perpendicular to the pipe at the spec break, with each side of the line labeled with the appropriatepressure rating (see Figure 2 for an example)

    Figure 2: Line Size and Pressure Rating

    ANSI 300 ANSI 6006"

    2) Line number, if necessary, at the entry and exit of P&ID (see Section 6.2)

    3) Flow rates and pressures of process media at the entry and exit of P&ID

    4) Material specification for special piping, such as low temperature piping, etc.

    5) Reference drawing number if appropriate

    6) Operating data of utilities, such as instrument air, steam, flare connection, etc.

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    6.2. Line Number and Piping Description

    6.2.1. Line Number

    1) Since most projects are simple and require one or two sheets of P&ID, the system flow can be easilyunderstood without the piping number. It may be needed for a major project that requires three ormore sheets of P&ID.

    2) A complete line number consists of the information described in Figure 3.

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    Table 1: Service and Product Abbreviation

    Service Service

    AS Air supply PB Pumpback

    FL Fill line RK Loading pump to rack

    DO Diesel off loading RD Rack drainage

    DR Diesel refueling SD Storm drain

    EA Exxon additive supply SL Slop line

    EO Exxon additive off loading ST Suction tank to loading pump

    ?A Other additive supply SW Swing line

    ?O Other additive off loading TM Transmix (interface)

    OS Offspec Product VL Vapor Line

    OX Oxygenate VR VRU Return line

    CW Cooling Water VS VRU Supply line

    D Drain or Sump WS Water Supply

    F Flare FW Fire Water

    GS Gas Supply IS Instrument Air

    HS Hydraulic Fluid Supply NS Nitrogen Supply

    SC Steam Condensate SS Steam Supply

    Product Product

    B Brine C Crude Oil

    UP Unleaded Premium KERO Kerosene

    UI Unleaded Intermediate AVGAS Avgas

    UR Unleaded Regular TFA Jet A

    LR Leaded Regular #6 #6 Oil

    D1 Diesel #1 OX Oxygenate

    D2 Diesel #2 MTBE MTBE

    HO1 #1 Heating Oil ETH Ethanol

    HO2 #2 Heating Oil IPA Isopropyl Alcohol

    FG Fuel Gas LPG LPG

    LUO Lube Oil N Inert Gas

    Note: (?) Question mark shall be replaced with prefix letter representing the name of other companiesat a given terminal.

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    Figure 3: Line Number Description

    10"-C-407-600-F

    -PIPE SIZE

    -SERVICE/PRODUCT (TABLE 1)

    -LINE NO. IN SEQUENCE

    -PRESSURE RATING

    -END CONNECTION(FLANGED OR SCREWED END)

    6.2.2. Piping DescriptionThe following piping designations are to be included on the P&ID:

    1) Line number (per Table 1 and Section 6.2.1.) should go from:a) equipment to equipmentb) equipment to another line

    c) line to line, such as bypassd) line size change to equipment, another line, or another line size change

    2) Line symbols per Table 2

    3) Piping, valves, fittings, and equipment symbols per Table 3

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    Table 2: Line Symbols

    PROCESS LINEABOVEGROUND

    SECONDARY/UTILITYABOVEGROUND

    INSULATED LINE(2 IN. THICK)

    FLOW ARROWPRIMARY/PROCESS

    PROCESS DATA FLOW,PRESSURE, TEMPERATURE,ETC.

    ELECTRICAL LINE

    HYDRAULIC LINE

    CAPILLARY LINE

    2"

    PROCESS LINEUNDERGROUND

    SECONDARY/UTILITYUNDERGROUND

    INSULATED LINEWITH HEAT TRACE

    FLOW ARROWSECONDARY/INSTRUMENTS

    PAGE CONNECTORCONTINUATION OF PROCESS,SIGNALS AND UTILITY LINESDRAWING REFERENCE NUMBER

    PACKAGED SKID SYSTEM

    PNEUMATIC LINE

    SOFTWARE OR DATALINK

    P&ID SHEET NO.

    2"

    LINE SYMBOLS

    PNEUMATIC BINARYSIGNAL

    ELECTRIC BINARYSIGNAL

    MECHANIAL LINKELECTROMAGNATIC ORSONIC SIGNAL (GUIDED)

    ELECTROMAGNATIC ORSONIC SIGNAL (NOTGUIDED)

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    Table 3-A: Valves, Fittings, and Equipment Symbols

    VALVES

    PLAIN END(SOCKETWELD ORTHREADED)

    FLANGED END

    NOTES:1. ALL VALVE SYMBOLS SHOWN BELOW CAN BE PLAIN END OR FLANGED END PER

    EXAMPLES SHOWN ABOVE.

    2. VALVES SHOWN ARE ACTUAL SIZE FOR PRIMARY PIPING. VALVES FOR SECONDARYPIPING AND INSTRUMENTS SHALL BE SHOWN AT 75% THE SIZE OF VALVES SHOWNHERE.

    NC

    GATE VALVE

    GLOBE VALVE

    PLUG VALVE

    DOUBLE BLOCK &BLEED VALVE

    THREE-WAYVALVE

    CHECK VALVE

    WAFERVALVE

    BALL VALVE

    MULTIPORTVALVE

    ANGLE CHECKVALVE

    ANGLE VALVE

    FOUR-WAY VALVE ORMETER PROVERVIVERTER VALVE (MPDV)

    METERING OR HANDTHROTTLE VALVE

    ORBIT VALVESEAL END

    PRESSURE VACUUMBREATHER VALVE

    PSV108

    000 000

    PRESS. VAC.

    PRESSURE SAFETY ORRELIEF VALVE

    PSV109

    000

    PSV110

    000 VACUUM SAFETY VALVE

    PSV111

    000SPRING LOADEDPRESSURE RELIEF VALVE(FLOW THROUGH PATTERN)

    PSV112

    000 RUPTURE DISC(PRESSURE)

    PI118

    EXCESS FLOW VALVE

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    Table 3-B

    VALVE ACTUATOR SYMBOLS

    EH

    DOUBLE ACTING PISTONACTUATED VALVE(HYDRAULIC SIGNALSHOWN)

    SPRING-OPPOSEDSINGLE-ACTINGPISTON ACTUATEDVALVE

    PRESSURE REDUCINGREGULATOR SELF-CONTAINED

    PRESSURE REDUCINGREGULATOR WITHEXTERNAL PRESSURETAP (UPSTREAM TAP -BACK PRESSUREVALVE)

    BACK PRESSUREREGULATOR SELF-CONTAINED

    BACK PRESSUREREGULATOR WITHEXTERNAL PRESSURETAP

    CONTROL VALVE WITHVALVE POSITIONER

    CONTROL VALVE WITHHAND ACTUATOR

    ELECTRO-HYDRAULICACTUATOR (SELFCONTAINED)

    ELECTRIC LINEARACTUATOR

    M

    M ELECTRIC MOTOROPERATOR VALVE ACPOWER

    MD.C.

    ELECTRIC MOTOROPERATOR VALVE DCPOWER

    DIAPHRAM ACTUATEDVALVE(PNEUMATIC SIGNALSHOWN)

    S

    SOLENOID VALVE

    S

    THREE-WAYSOLENOID VALVE

    1 2

    3

    FLEX-FLO VALVE(SURGE RELIEF ORPRESSURE RELIEF)OR

    HAND THROTTLEVALVE

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    Table 3-C

    FLOW ELEMENT SYMBOLS

    ROTAMETER TYPEFLOW INDICATOR

    ORIFICE PLATE WITHFLANGE TAPS

    P.D. METER STACKWITH ATGTEMPERATURECOMPENSATOR, ANDPULSE TRANSMITTER,ON METER

    VENTURI TUBE ORFLOW NOZZLE

    FI101

    FT102

    FE102

    FT103

    TZ103

    FE103

    FE104

    OR

    FT104

    FE104

    FT105

    FE105

    TURBINE METER

    FLOW STRAIGHTENINGPLATE

    STRAIGHTENINGVANES

    STATIC MIXER

    FX106

    FLOW SIGHT GLASSFG107

    CORIOLIS METER

    SONIC METER

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    Table 3-D

    PUMPS, COMPRESSORS, AND DRIVERS

    HORIZONTALCENTRIFUGAL PUMPWITH ELECTRICALMOTOR DRIVE WITHFLEXIBLE COUPLING

    ROTARY PUMP

    ENGINE

    TURBINE

    VERTICAL INLINE

    ROTARYCOMPRESSOR

    BELT DRIVER

    GEAR DRIVER

    FLUID DRIVER (VARIABLESPEED) (I.E. AMERICANGYROL)

    FLEXIBLE COUPLINGDRIVER

    VERTICAL SUMPPUMP

    VERTICAL CAN PUMP

    1500 H.P.

    RECIPROCATINGPUMP

    CENTRIFUGALCOMPRESSOR

    ELECTRIC MOTOR(THREE-PHASE)

    GEAR DRIVENCENTRIFUGAL PUMPWITH ELECTRICMOTOR

    P-2200 H.P.

    500 H.P.

    P-3

    P-1100 H.P.

    BELT DRIVENRECIPROCATINGPUMP WITH ENGINE

    VERTICAL PUMPWITH VERTICALELECTRIC MOTORWITH FLEXIBLECOUPLING

    BLOWER OR FAN

    RECIPROCATINGCOMPRESSOR

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    Table 3-E

    TANKS

    HORIZONTALSTORAGE TANK(BULLET TANK)

    CONE ROOFTANK

    DOUBLE DECKFLOATING ROOFTANK(EXTERNALFLOATING)

    FLOATINGSUCTION

    SPHERE TANK

    VAPOR DOMETANK

    FLOATING ROOFTANK WITHGEODESICDOME

    T-3264

    T-3262

    T-3263

    T-3265

    T-3266

    T-1

    T-3267

    SUMP TANK(NO EPCREGISTERNUMBER)

    CONE ROOFTANK WITHINTERNAL PAN

    PONTOONFLOATING ROOFTANK

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    Table 3-F

    MISCELLANEOUS FITTINGS

    FLAME ARRESTOR

    SPECTACLE BLINDOPEN

    FLANGE

    LINE CAP

    REDUCER LINE BREAK

    UNION

    BLIND FLANGE

    ADAPTOR WITH CAP

    SPECTABLE BLINDCLOSED

    OPEN DRAIN

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    Table 3-G

    LOADING ARMS AND OTHER MISCELLANEOUS EQUIPMENT

    FLEXIBLE HOSE

    HOSE WITHADAPTORFOR AVIATIONREFUELER

    LOADING ARMASSEMBLYTORSION LOADERTYPE WITH DRYBREAK COUPLER

    VAPOR HOSEWITH COUPLER

    AIRPORTREFUELINGTRUCK

    DISPENSER

    "X" = D2 : DIESEL

    "X" TRENCH (STRIP)DRAIN

    TRANSPORT TRUCK

    FIRE MONITOR

    LOADING ARMASSEMBLYCOUNTERWEIGHT TYPE WITHDRY BREAKCOUPLER

    AIRPORTFUELING HYDRANT

    HOSEWITH COUPLER

    LOADING ARMASSEMBLYTORSION TOPLOADING TYPE

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    Table 3-H

    FILTERS, STRAINERS, AND SEPARATORS

    OIL/WATERSEPARATOR

    VERTICAL BASKETSTRAINER

    OWS 1

    WATER PRODUCT

    STR-1

    STR-2

    DIRTY

    PRODUCT

    FIL-1

    CLEAN

    FIL-2

    FIL-3

    FIL-2

    HORIZONTALSCRAPER TRAP/STRAINER WITHQUICK CLOSURE

    CYCLONESEPARATOR

    Y-STRAINER WITHVALVE

    HORIZONTAL FILTERWITH QUICKCLOSURE

    VERTICAL FILTERWITH QUICKCLOSURE

    HEAT EXCHANGERS, DRYERS, AND HEATERS

    SHELL AND TUBEEX-1

    FORCED AIR COOLED

    EX-2

    DESICCANT DRYERD-1

    H-1

    FUEL

    FURNACE(FIRED OR BATHHEAT)

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    Table 3-I

    VRU, ABSORBERS, AND OTHER VESSELS

    VRU

    ABSORBERS

    CARBONABSORBER

    VERTICALDRUMSHORIZONTAL

    DRUMS

    SURGE RELIEFSUPPRESSOR

    NOTES: Indicate approximate position ofinlet and outlet. If it is necessary to showthe internal parts, keep it simple.

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    7. Equipment Designation1) All equipment should be designated with a combination of letters and numbers, as specified in Table

    4. This letter designation should be placed next to the equipment symbol.

    Table 4: Equipment Designations

    Abbreviation Description Example

    AB Absorber AB-1, AB-2

    AD Adsorber (Carbon Bed) AD-1, AD-2

    AI Additive Injector AI-1

    B Booster Pump B-1 or B-101

    BL Blower, Fan BL-1

    C Compressor C-1, C-2

    D Dryer D-1, D-2

    EX Heat Exchanger, Condenser EX-1

    FIL Filter FIL-1, FIL-2

    OWS Oil/Water Separator OWS-1, OWS-2

    P Pump P-1, P-101

    PA Pump, Additive PA-1, PA-2

    PB Pump Back/Offloading PB-1, PB-2

    PS Pump, Sump PS-1, PS-2

    PP Pump, Product to Rack PP-1, PP-2

    STR Strainer STR-1, STR-2

    SEP Separator Filter/Separator SEP-1, SEP-2

    T Storage Tank T-101, T-102

    Sump Tank

    Slop Tank

    V Process Vessel, Knockout drum V-1, V-101

    VCU Vapor Combustion Unit VCU-1

    VRU Vapor Recovery Unit VRU-1

    2) The equipment symbols shall be in accordance with Table 3.a) Types of equipment, such as pumps, exchangers and drums, are to be numbered consecutively

    with their respective equipment abbreviation letter prefix.

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    b) If two or more pieces of similar equipment are in the same service, each is designated with asequence letter (A, B, C, etc.) following the equipment sequence number.

    c) If identical equipment is shown on more than one P&ID, assign each piece of equipment its ownnumber. The first number is for the sheet number; the subsequent number is for the number ofthe equipment on that sheet. In multiple P&ID, three digit numbers are preferred, such as T-101(first tank in sheet 1) or T-201 (first tank in sheet 2).

    3) Specifications for major equipment should be included in the top of the P&ID. As a minimum, theinformation listed in Table 5 should be included in the specification.

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    Table 5: Required Equipment Specifications

    Item Information Required Example

    Pump Units Pump

    Size (Inlet x Outlet x Impeller Size or Stroke Length),ANSI Pressure Rating, End Connection, Manufacturer,Model No., Number of stages, Type of Pump,Differential Pressure @ Rated Capacity (BPD)

    Motor

    HP, Manufacturer, Voltage, RPM, Frame No., Type ofDriver, Model Number

    VFD or Speed Indicating Controller (SIC) (if installed)

    Manufacturer, Voltage, HP rating

    Register Numbers for Pump, Motor and VFD

    10"x12"x15", ANSI 900RFFE, Bingham, MSD, 2 stg.,Centrifugal pump, 420 psi @120k BPD.

    1250 HP, Westinghouse, 2300Volt, 3600 RPM, Frame6808H

    Pump Register No. 39340

    Motor Register No. 42901

    Tanks 1. Size (Diameter x Height), Nominal Capacity,Manufacturer, Service, Roof Type (Floating Roof, ConeRoof, etc.), Critical Exposure Temperature (CET): XXF

    2. Tank Number

    105' dia. x 35' height, 45kbbls., Matrix, Unlead RegularGasoline, Floating Roof Tank,100 F. Max.

    Tank No. 2345

    Compressorand Driver

    Compressor

    Size (Inlet x Outlet), Pressure Rating, End Connection,Manufacturer, Model No., Type of Compressor, PowerRating, Capacity at Inlet condition, Max. DifferentialPressure and Temperature, Critical ExposureTemperature (CET): XX F, Anti surge device

    Motor

    HP, Manufacturer, Voltage, RPM, Frame No., Type ofdriver.

    Register Numbers for Pump and Motor

    Vessels 1. Size (Overall Dimensions), Nominal Capacity,Connection Size and Pressure Rating, DesignTemperature and Pressure, Service, Critical ExposureTemperature (CET): XX F

    2. Register Numbers (large vessel only)

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    Item Information Required Example

    ControlValves

    Valve

    Body Size, ANSI Pressure Rating, End Connection,Manufacturer, Model No., Port size, Type of Trim,Services

    Actuator

    Manufacturer, Model No., Type of Actuator (Pneumatic,Hydraulic, etc), Signal Range, Type and Model No. ofTransducer and Valve Positioner if installed.

    PressureRelief Valves

    Body Size, Pressure Rating, End Connection,Manufacturer, Model No., Capacity at Set Pressure,Orifice size.

    Prover Prover

    Size (I.D. of barrel x calibration length x overall length),ANSI Class, Displacement Volume, Manufacturer, Typeof Prover (small volume, sphere, piston, etc),Manufacturer and Model Number for Proximity Switch.

    4-Way Valve

    Body Size, ANSI Pressure Rating, End Connection,Manufacturer, Model No., Type of Operator, OperatorManufacturer and Model No., and Actuation Time.

    Register Number

    Meter (otherthan Orifice)

    Meter

    Size, ANSI Class, End Connection, Manufacturer, ModelNo., Type of Meter, Construction Material, Maximumand Minimum Flow Rates, K-factor, Number of Pick-upsRange Mesh Size and Type

    Register Number

    OrificeMeter

    Size, ANSI Class, End Connection, Manufacturer, ModelNo., Maximum and Minimum Flow Rates. PressureDrop in Inches of Water, Bore Size and Plate Material.

    Computer Manufacturer, Model Number, Type

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    Item Information Required Example

    MotorOperatedValve

    Valve Size, ANSI Pressure Rating, End Connection,Manufacturer, Model No., Type of Valve, Type ofOperator (AC, DC, Hydraulic, etc.), OperatorManufacturer and Model No., and Actuation Time.

    Strainers Size, ANSI Class, End Connection, Manufacturer, ModelNo., Type of Strainer, Construction Material, Mesh Sizeand Type

    Filter/Separator andFilters

    Size, ANSI Class, End Connection, Manufacturer, ModelNo., Maximum Working Pressure and Temperature,Quantity and Size and Type of Element, ConstructionMaterial.

    AirEliminators

    Size, ANSI Class, End Connection, Manufacturer, ModelNo., Maximum Working Pressure

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    8. Instrument Symbols and Identification

    8.1. General1) The term "Instrument" applies to any device used directly or indirectly to measure a process variable

    or to control a variable.

    2) Each instrument should be identified by a system of letters (functional identification) and a system ofnumbers (loop identification), and each identification should be shown in a 1/2 inch circular balloon,as shown in Figure 4.

    Figure 4: Instrument Identification

    PCV214

    1/2 IN. DIAMETER FOR INSTRUMENTSYMBOL OR TAG

    FUNCTIONAL IDENTIFICATIONLOOP IDENTIFICATION

    INSTRUMENTIDENTIFICATION

    PCV-214 INDICATES THAT THE INSTRUMENT IS A PRESSURE CONTROLVALVE AND IT IS SHOWN ON SHEET 2, LOOP NO. 14 OF THE P&ID.

    3) The letter designation for any instrument not shown in the list should be defined per Section 4.2. ofthis Global Practice.

    4) Other pertinent information, such as instrument range, function designation or set point, may beadded to the circular balloon as shown in Figure 5.

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    Figure 5: Other Information Added to Balloon

    USE IT WHEN ABSOLUTELY NEEDED TO SHOWTHE INSTRUMENT RANGE.

    LOCATE THE SYMBOL ANYWHERE NEAR THEBALLOON.

    PT215

    0-2000

    RANGE BOX - APPROX. 1/4" X 5/8"

    SHOULD BE LOCATED AT THE UPPERRIGHTHAND CORNER OF THEBALLOON.

    PY216