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41 Atg&Ctm Fope06

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  • 1. Prepared by Yagnesh Ponkia CES Inst Tank Gauging &Tank Gauging & Custody TransferCustody Transfer MeteringMetering Presentation By Yagnesh Ponkia CES Instrumentation Reliance Industries Ltd
  • 2. Prepared by Yagnesh Ponkia CES Inst Tank Gauging SystemTank Gauging System
  • 3. Prepared by Yagnesh Ponkia CES Inst Types Of TanksTypes Of Tanks  Cone Roof Tank (With or W/O N2 purging)  Open Floating Roof Tank  Internal Floating Roof Tank. (With N2 Purging)  Dome Roof Tank  Sphere  Horizontal ( Bullet )
  • 4. Prepared by Yagnesh Ponkia CES Inst Types Of TanksTypes Of Tanks Open Floating Roof Tank Internal Floating Roof Tank Cone Roof Dome Roof Horizontal Sphere
  • 5. Prepared by Yagnesh Ponkia CES Inst Types Of Tanks At JamnagarTypes Of Tanks At Jamnagar  Internal Floating roof (for high vapour pressure) with N2 blanket (for toxic & flammable liquid) – for custody transfer - 1C  Internal Floating roof with N2 blanket (For Toxic & flammable liquid) – Not for Custody transfer - 1N  Cone roof (Atmospheric pressure ) with N2 blanket - for custody transfer - 2C  Cone roof with N2 blanket – Not for custody transfer - 2N
  • 6. Prepared by Yagnesh Ponkia CES Inst Types Of Tanks At JamnagarTypes Of Tanks At Jamnagar  Cone roof Custody transfer - 3C  Cone roof not for Custody transfer - 3N  Open Floating roof for custody transfer -4C  Open Floating roof not for custody transfer -4N  Sphere - SC
  • 7. Prepared by Yagnesh Ponkia CES Inst Level / UllageLevel / Ullage U lla g e I n n a g e S a f e F illin g h ig h t P r o d u c t s u r f a c e D a t u m P la t e
  • 8. Prepared by Yagnesh Ponkia CES Inst ATG ObjectiveATG Objective (1)(1) Raw parameter measurements in tank Level Temperature Hydrostatic Pressure Static Pressure Water bottom
  • 9. Prepared by Yagnesh Ponkia CES Inst ATG Objective (2)ATG Objective (2) Calculated Tank Inventory Gross volume @ amb. Net Volume @ amb. Net standard volume @ 15 deg C. Mass Ullage
  • 10. Prepared by Yagnesh Ponkia CES Inst Types of Tank gaugingTypes of Tank gauging  Servo  Hydrostatic  Radar
  • 11. Prepared by Yagnesh Ponkia CES Inst Servo gaugesServo gauges  Static force transducer, which continuously measures the weight of the displacer, controlling the position of a grooved drum  Density and interface measurement (for clean products only)  Specialized maintenance required.
  • 12. Prepared by Yagnesh Ponkia CES Inst Hydrostatic tank gaugesHydrostatic tank gauges  Hydrostatic pressure, measured near the bottom of the tank. Direct innage measurement No standpipe required No moving parts Accurate direct mass measurement ( + 0.1%)  Density = (P1 - P2) / H  L = C + [ P1 / Density ] c
  • 13. Prepared by Yagnesh Ponkia CES Inst Radar type level transmitterRadar type level transmitter.  The time delay between a transmitted and reflected microwave signal is used to measure the distance between the gauge and the liquid surface.  D = t/2c Where: t = time of flight & c = speed of light (c = 186,000 miles/sec )  No moving parts  No contact with the liquid  High level accuracy of +/- 1 mm
  • 14. Prepared by Yagnesh Ponkia CES Inst Radar - The Method FMCWRadar - The Method FMCW
  • 15. Prepared by Yagnesh Ponkia CES Inst Radar – for Tank GaugingRadar – for Tank Gauging  Refineries  Independent tank terminals  Marketing terminals  Pipeline terminals  Petrochemical industry  Liquefied gas terminals  Airports
  • 16. Prepared by Yagnesh Ponkia CES Inst Tank dippingTank dipping  It is performed by lowering a tape covered with paste through the dip pipe of the tank and determining the ullage on basis of the location of the colour change of the paste.  Accuracy at best +/- 2 mm which is twice as inaccurate as the other tank gauging methods.
  • 17. Prepared by Yagnesh Ponkia CES Inst Reliance ATG SystemReliance ATG System Supplied by : M/S SAAB, Sweden. Indian Representative : M/S Jost Eng. Pune. Consultant : Bechtel Ltd.
  • 18. Prepared by Yagnesh Ponkia CES Inst SAAB - Pioneers in Radar TankSAAB - Pioneers in Radar Tank GaugingGauging ...Saab Rosemount  30 years experience in Radar Level Gauging  Radar for every tank and product  Largest number of accuracy approvals  Largest installed base of Radar Tank Gauges
  • 19. Prepared by Yagnesh Ponkia CES Inst Large Installed BaseLarge Installed Base
  • 20. Prepared by Yagnesh Ponkia CES Inst Why Saab Was SelectedWhy Saab Was Selected  No Moving Part  Proven Radar Technique-can Be Used For White & Black Oils With Different Gauge Head.  Meeting Custody Transfer Requirements  Proven For Interfacing With Foxboro.
  • 21. Prepared by Yagnesh Ponkia CES Inst SAAB System ComponentsSAAB System Components  Radar Level Gauge  Multi Spot Temperature Probe  Single Spot Temperature Probe  Bottom Water Level Probe  Vapour/N2 Pressure Transmitter  Hydrostatic Pressure Transmitter  Data Acquisition Unit  Independent Display Unit  Field Communication Unit  Field Bus Modem  OPI Station - HMI
  • 22. Prepared by Yagnesh Ponkia CES Inst Rex, Custody Transfer AccuracyRex, Custody Transfer Accuracy 1 LNE, France 2 PTB, Germany 3 NMi, Netherlands 4 OIML, International 5 TankRadar API +- 1/8” Saab TankRadar ®®
  • 23. Prepared by Yagnesh Ponkia CES Inst Radar Tank GaugesRadar Tank Gauges
  • 24. Prepared by Yagnesh Ponkia CES Inst Horn Antenna Gauge – RTGHorn Antenna Gauge – RTG 2920/39202920/3920  Fixed roof tanks  Clean products  Small tank nozzles, 8” or larger  Easy installation on tanks in operation  No maintenance
  • 25. Prepared by Yagnesh Ponkia CES Inst Parabolic Antenna Gauge – RTG 2930/3930Parabolic Antenna Gauge – RTG 2930/3930  Excellent for heavy products  Fixed roof tanks  All types of products  Custody transfer accuracy  Close to the tank wall  No maintenance
  • 26. Prepared by Yagnesh Ponkia CES Inst Reliable antennas for heavy duty serviceReliable antennas for heavy duty service Rough environments! After four months in a Sulphur tank Exposed to asphalt heated to 230°C
  • 27. Prepared by Yagnesh Ponkia CES Inst Still Pipe Gauge – RTG 2940/3950Still Pipe Gauge – RTG 2940/3950  Floating roof tanks  External / Internal floaters  Installed on existing still pipe  Unaffected by rust and deposits on the still pipe  5”, 6”, 8”, 10” & 12” pipes
  • 28. Prepared by Yagnesh Ponkia CES Inst Still pipe gauge – 3950 in Floating roofStill pipe gauge – 3950 in Floating roof tanktank
  • 29. Prepared by Yagnesh Ponkia CES Inst LPG / LNG Gauge – RTG 2960/3960LPG / LNG Gauge – RTG 2960/3960  LPG and LNG  Sphere and Bullet Tanks  150 – 600 PSI  All serviceable parts outside the tank
  • 30. Prepared by Yagnesh Ponkia CES Inst Power Supply to REXPower Supply to REX  100 - 240 VAC  Low voltage version:  34 - 70 AC  48 - 100 VDC  Easy start up  Easy commissioning  Easy to connect to existing systems
  • 31. Prepared by Yagnesh Ponkia CES Inst REX INPUT's and OUTPUT's Overview
  • 32. Prepared by Yagnesh Ponkia CES Inst AccuracyAccuracy  Level :- +/- 1 mm  Bottom Water Level :- +/- 3 % Of Full Range.  Temperature :- +/- 0.1 Deg C  Hydrostatic Pressure:- +/- 0.1 % Of Full Scale  Static Pressure:- +/- 0.1 % Of Full Scale
  • 33. Prepared by Yagnesh Ponkia CES Inst SAAB System configurationSAAB System configuration
  • 34. Prepared by Yagnesh Ponkia CES Inst Redundant SystemRedundant System
  • 35. Prepared by Yagnesh Ponkia CES Inst Emulation – Control Room ConnectivityEmulation – Control Room Connectivity
  • 36. Prepared by Yagnesh Ponkia CES Inst CalibrationCalibration GuidelinesGuidelines Do not calibrate when  The tank is emptying or filling  Agitators are running.  When there is windy condition.  When there is foam on the surface.
  • 37. Prepared by Yagnesh Ponkia CES Inst Custody TransferCustody Transfer Metering SystemMetering System
  • 38. Prepared by Yagnesh Ponkia CES Inst PurposePurpose CTM system can be used for  Receipt of Raw materials  Sale of products / by-products to external customers  Transfer between legal entities within the complex  Metering for customs & excise payments
  • 39. Prepared by Yagnesh Ponkia CES Inst CTM RequirementsCTM Requirements  This metering metering should be acceptable to --W&M authority of the country --And product buyer / Seller  Flow metering shall be done as per acceptable international standards e.g., API manual of Petroleum measurement standards
  • 40. Prepared by Yagnesh Ponkia CES Inst Locations of CTMLocations of CTM Plant1 Company A CTM Plant2 Company B CTM CTM Gantry Ship loading Rail/Road loading
  • 41. Prepared by Yagnesh Ponkia CES Inst CTM RequirementsCTM Requirements  Provision for inline validation/proving of the flow meters  Verification of the complete system against standard instead of electronics/sensor calibration only as in case of ordinary flow meters.
  • 42. Prepared by Yagnesh Ponkia CES Inst CTM RequirementsCTM Requirements A reliable flow measurement system should consist of  Accurate flow meters with pressure, temperature and density compensation  Tantalization of the flow over a period of time/in a batch - gross volume, gross standard volume, gross mass
  • 43. Prepared by Yagnesh Ponkia CES Inst Custody Transfer MeasurementsCustody Transfer Measurements Following type of flow meters/systems have been accepted as suitable for custody transfer metering by the oil & gas industry based on their performance, accuracy, repeatability and reliability: (1) Mass Flow meters (2) Turbine Meters (3) Positive Displacement Meters (4) Ultrasonic Meters (5) Automatic Tank Gauging
  • 44. Prepared by Yagnesh Ponkia CES Inst Turbine meterTurbine meter  More compact then other meters.  Widely accepted for Custody transfer.  Greater maximum flow range for low viscous refined products.
  • 45. Prepared by Yagnesh Ponkia CES Inst Turbine meterTurbine meter  Requires straight run or straightening vanes.  Relatively high pressure drop / cavitations.
  • 46. Prepared by Yagnesh Ponkia CES Inst Positive Displacement metersPositive Displacement meters  measures the flow of the fluid directly.  It sweeps out a known volume every cycle and therefore the flow is this volume multiplied by the cycles per second. wheels
  • 47. Prepared by Yagnesh Ponkia CES Inst Positive Displacement metersPositive Displacement meters  Very good Linearity.  No straight run or straightening vanes.  Good for heavy viscous products. wheels
  • 48. Prepared by Yagnesh Ponkia CES Inst Ultrasonic Flow meterUltrasonic Flow meter  Based on difference in transit-time method.  New technology.  Viscosity independent.  No filter / strainers required.
  • 49. Prepared by Yagnesh Ponkia CES Inst Ultrasonic Flow meterUltrasonic Flow meter  Requires straight run.  Large sizes available.  Suitable for Bi-directional flow.
  • 50. Prepared by Yagnesh Ponkia CES Inst Coriolis Mass Flow meterCoriolis Mass Flow meter  Works on Newton’s second low of motion. a = m / Fe  Measures mass, volume, density & temp. w/o secondary instrumentation.
  • 51. Prepared by Yagnesh Ponkia CES Inst Coriolis Mass Flow meterCoriolis Mass Flow meter  High accuracy, repeatability and turndown.  Limited to 6” meter size.  Sensitive to pipe geometry & vibration.
  • 52. Prepared by Yagnesh Ponkia CES Inst CTM System at RelianceCTM System at Reliance Supplied by : M/S Smith Meters, USA. Consultant : Bechtel Ltd.
  • 53. Prepared by Yagnesh Ponkia CES Inst Meter Run & SkidMeter Run & Skid  At Reliance, 32 no of Metering Skid located in four different areas.  Meter Run A Pipe line consisting of custody meter & its associated equipments.  Metering Skid Group of meter runs called metering skid. One skid can have up to six meter runs
  • 54. Prepared by Yagnesh Ponkia CES Inst
  • 55. Prepared by Yagnesh Ponkia CES Inst RPLRTF RRTF MTF SPMJETTYJKPL p.c.nap.-14" p.c.naptha 18" 10" A.R.Napt. URG-10" 14" URG 12" RFG Bz-8" OX-8" 10" PX-6" PX 8" LAB k 14" sko-8" sko HSD-16" 12" ATF-8" ATF 12" LPG 24" Dis. RW 611 102 crude-30" RW 611 103 FO-10" MM 812 101 PX-16" MM 812 102 MM 813 109 MM 813 110 MM 813 108 MM 813 106 MM 813 105 MM 813 107 MM 813 101 PCN-24" MM 813 104 gaso-24" MM 813102 kero-24" MM 813 113 hsd/sko-24" MM 813 112 disl-24" MM 813 114 RS 651 080 6" Methanol RW 611 104 10" LPG RS 652 100 RS 651 090 RS 651 085 RS 652 095 RS 652 090 RS 652 085 RS 652 080 RS 652 065 MM 814 101 NOTE:- Indicates Bidirectional Meter Indicates Unidirectional Meter Px-8" MX.-6" RS 651 095 RW 631 118 10" AY 231 001 RIL RPL HNHU & PLATFORMER DATE:-08/09/97 MM 813 111 RW 631 117 PROPYLENE-8" FISCAL METERING SKIDS PLATFORMATE RW 611 101 crude-30"
  • 56. Prepared by Yagnesh Ponkia CES Inst System ConfigurationSystem Configuration M O D B U S I N T - 3 0 S M I T H C O N T R O L P A N E L G E O P R O V F L O W C O M P U T E R ( G E O f lo w ) F L O W C O M P U T E R ( G E O f lo w ) F L O W C O M P U T E R ( G E O f lo w ) P R O V E R IN S T R U M E N T S S K I D M E T E R R U N F I E L D IN S T R U M E N T S T O O T H E R P R O V E R C O M P U T E R W I T H I N S A M E P I B F O X - IA D C S S Y S T E M P C C P IB F IE L D D C S - C u s t o d y T r a n s f e r M e t e r i n g S y s t e m I n t e r f a c e b lo c k d ia g r a m A W - 5 1 W P M 1 M 2 M 3 S K I D - 1 S K I D - 2 S K I D - n R S 4 2 2 R e d u n d a n t G E O P R O V G E O P R O V S u p e r v i s o r y C o m p u t e r S M IT H S u p e r v i s o r y C o m p u t e r S M IT H
  • 57. Prepared by Yagnesh Ponkia CES Inst Design PhilosophyDesign Philosophy  No bypass arrangement of Skid.  N+1 meter run for stand-by & master meter.  Individual Flow computer / meter run.  Individual Prover computer / Skid  Redundant Supervisory computer / PIB.  Online density measurement
  • 58. Prepared by Yagnesh Ponkia CES Inst Metering skids with RelianceMetering skids with Reliance • Two Meter run with Portable prover • Two Meter run with Fixed Prover • Three meter run with Portable prover. • Three Meter run with Fixed Prover
  • 59. Prepared by Yagnesh Ponkia CES Inst Accuracy / RepeatabilityAccuracy / Repeatability • Over all Skid • Accuracy: +/- 0.25 % • Repeatability : +/- 0.02 % • Turbine Meter • Accuracy: +/- 0.15 % • Repeatability : +/- 0.02 % • Density Meter • Accuracy : 0.0001 g/cc • Fixed volume prover • Accuracy: +/- 0.02 %
  • 60. Prepared by Yagnesh Ponkia CES Inst Equipments Associated with aEquipments Associated with a metering skidmetering skid Each meter run consists of  Flow computer  Strainer  Flow straightener  Turbine flow meter  Flow control valve  Pressure Transmitter/Gauge  Temperature Transmitter/Gauge  O/L MOV, Prover I/L MOV  Air eliminator
  • 61. Prepared by Yagnesh Ponkia CES Inst
  • 62. Prepared by Yagnesh Ponkia CES Inst Smith CTM SkidSmith CTM Skid
  • 63. Prepared by Yagnesh Ponkia CES Inst Equipments Associated with aEquipments Associated with a metering skidmetering skid Common equipments for each skid  Density Meter with pump for constant flow/pressure  Prover Computer Sets of metering skids are monitored/ controlled by  Redundant Supervisory Computers
  • 64. Prepared by Yagnesh Ponkia CES Inst Flow ComputersFlow Computers  GEOFLOW – All process parameters related to a meter run are routed to Flow computer – Calculates gross & net volumes – Calculate Mass flow – Alarm indication – Link to prover computer
  • 65. Prepared by Yagnesh Ponkia CES Inst Flow ComputersFlow Computers  GEOPROV • Performs proving & Calculates meter factor • Alarm indication • MOV control • Communication with Supervisory computer • All flow computers for a metering skid communicate to prover computer • All process parameters related to prover are routed to prover computer
  • 66. Prepared by Yagnesh Ponkia CES Inst Flow ComputersFlow Computers Supervisory Computer • Rate control at start-up, shutdown & during loading • Flow balancing of multiple meter runs • Reports • Diagnostics • RS-485/422 link to DCS / OMIS • Continuous updating of offline computer
  • 67. Prepared by Yagnesh Ponkia CES Inst ReferencesReferences  As per Bechtel Specification  Confirm to – API - Ch.5/Sec.5.3 - for “ Metering of liquid hydrocarbons by turbine meters – API - Ch.4 for “ Proving system”
  • 68. Prepared by Yagnesh Ponkia CES Inst CTM CalibrationCTM Calibration In-line calibration method • In-line calibration method is usually applied for the calibration of custody transfer meters without disturbing the product flow to/from units, buyer/seller • Calibration shall be done at the conditions same as at the time of product flow i.e., same temperature/ pressure/density/flow rate
  • 69. Prepared by Yagnesh Ponkia CES Inst CTM CalibrationCTM Calibration Off-line calibration method • Custody Transfer flow meter removal & calibration at FCRI.
  • 70. Prepared by Yagnesh Ponkia CES Inst Terminal AutomationTerminal Automation System GantrySystem Gantry Supplied by : M/S Hoffer Consultant : Bechtel Ltd.
  • 71. Prepared by Yagnesh Ponkia CES Inst ComponentsComponents  Batch Control Unit  Filter/strainer with air eliminator  Flow meter  Digital set-stop valve  Temperature Transmitter  Over-fill switch  Earthing Relay
  • 72. Prepared by Yagnesh Ponkia CES Inst
  • 73. Prepared by Yagnesh Ponkia CES Inst Meter Factor ( MF )Meter Factor ( MF )  Reference API Chapter 12.2  Meter calibrated against a reference called Prover  MF ratio of Prover to Metered volume  Metered volumes compensated or corrected for pressures and temperatures on steel ( 1,3 ) and liquid ( 2,4 )  MF may be re defined as follows: [ V * C1 * C2 * C3 * C4 ]P MF = -------------------------------- [ V * C1 * C2 * C3 * C4 ]M
  • 74. Prepared by Yagnesh Ponkia CES Inst CTM ProversCTM Provers
  • 75. Prepared by Yagnesh Ponkia CES Inst ProverProver  It is an equipment used for complete calibration of Custody transfer meter runs.  Types of Prover – Tank Prover – Pipe Prover – Master Meter – Small Volume Prover ( SVP )
  • 76. Prepared by Yagnesh Ponkia CES Inst Reliance ProversReliance Provers  Bi-Directional Conventional ( fixed volume) prover • Fixed • Portable  Master Meter Proving  Tank Prover for Gantry meters
  • 77. Prepared by Yagnesh Ponkia CES Inst Tank ProverTank Prover
  • 78. Prepared by Yagnesh Ponkia CES Inst Bi-Directional Pipe ProverBi-Directional Pipe Prover Positive Displacement Bi-directional BAll Prover Meter Under Test 4-WAy Valve Detector # 1 Detector # 2 Inflatable Sphere Pulse Counter
  • 79. Prepared by Yagnesh Ponkia CES Inst Bi-Directional Pipe ProverBi-Directional Pipe Prover
  • 80. Prepared by Yagnesh Ponkia CES Inst Bi-Directional Pipe ProverBi-Directional Pipe Prover
  • 81. Prepared by Yagnesh Ponkia CES Inst Prover SphereProver Sphere
  • 82. Prepared by Yagnesh Ponkia CES Inst Provers with RelianceProvers with Reliance Fixed prover for Raw materials Crude IFO Methanol Portable Prover Diesel / kerosene Naphtha / Gasoline Aromatics Aviation Turbine Fuel LPG / Propylene
  • 83. Prepared by Yagnesh Ponkia CES Inst Master Meter ProverMaster Meter Prover  Reference API Chapter 4.5  Indirect method of proving  Any existing meter with same or better accuracy, can be used as a master meter and dedicated to proving service only – used infrequently resulting in less wear & tear  Operates in series with custody meter and shall give gross volumes without corrections  A minimum of two minutes flow and 10,000 pulse output from meter is desired
  • 84. Prepared by Yagnesh Ponkia CES Inst
  • 85. Prepared by Yagnesh Ponkia CES Inst Prover calibrationProver calibration Proving Of Prover • W & M Approved Third party • Once in 3 years for portable provers and once in 5 years for fixed provers • Reliance proved its provers in Jan 2005 by Shell Global Solutions, Malaysia.
  • 86. Prepared by Yagnesh Ponkia CES Inst Custody Transfer Meter certificationCustody Transfer Meter certification  Approval required for each meter run once in a year  W&M Inspector visit the site, check the calibration & stamp on the flow meter.
  • 87. Prepared by Yagnesh Ponkia CES Inst CalibrationCalibration  Vendor’s master prover is proved by water draw method  Vendor’s master meter is proved against master prover at site  Client’s prover is proved against vendor’s master meter Water Draw Vendor Prover Vendor MM Client’s Prover Client’s MM Client’s Meter Once a year Frequently at Client’s site Once in 3/5 years Once in year Based on site experience
  • 88. Prepared by Yagnesh Ponkia CES Inst ATG Vs CTMATG Vs CTM  When factors, such as capital costs and operating expenses, are weighed, tank gauging may be a better choice for large displacements as the errors are within the limitations.  However for small displacements Custody flow metering with compensation is better solution.
  • 89. Prepared by Yagnesh Ponkia CES Inst End Of PresentationEnd Of Presentation Thanks for the listening ears.