Presentation on theme: "Indian Oil Pipelines Indian Oil has a network of over KM cross- country pipelines throughout the country. Instrumentation Control Systems, SCADA."— Presentation transcript:
1Telecommunication, Instrumentation & SCADA Systems in Indian Oil Pipelines
2Indian Oil PipelinesIndian Oil has a network of over KM cross- country pipelines throughout the country.Instrumentation Control Systems, SCADA Systems & Telecommunication Systems have a vital role to play in the safe and efficient operations of its cross country pipelines for in time and on-spec delivery of crude oil and petroleum products.
3Indian Oil Pipelines Latest State of the art Instrumentation Reliable SCADA SystemsCross-countryPipelinesFailsafe Control SystemsDependable Communication SystemsSafe, Efficient & Eco-friendly Pipeline OperationsSafety of PersonnelSafety of Equipment
4Indian Oil Pipelines More Efficient More Reliable Less Interrupted With this,our PipelineOperations are:-SaferWith accurateMeasurementsIndian Oil Pipelines
9Telecommunication Systems For smooth operation of the pipeline, a dedicated communication system with 99.9% (typ.) availability is installed for providing :An InstantaneousReliable &Continuous exchange of voice & data between pumping/ terminal stations as well as with RCP locations.
10Telecommunication Systems Modes of communication in pipelinesH.F. Communication systemV.H.F. Communication systemPublic leased circuits on hireLine of Sight Communication systemOptical fiber Communication systemSatellite Communication system
11Telecommunication Systems HF Communication SystemA back-up communication systemVery high range up to 1500 kmLow costOnly simplex or half duplex possibleRequirement of separate frequency for day & nightNow phased out in pipelines
12Telecommunication Systems VHF Communication SystemUsed for communication in a pipeline station / tank farmBase stations and hand held trans-receivers availableSuitable for short range - typically 2 km to 25 kmLow costCannot be used for inter station communication in pipelines
13Telecommunication Systems Line of Sight CommunicationDuplex communicationSupports voice, data, fax, computer networking and SCADA systemsComparable cost with other modesObtaining clearances / licenses is time consumingVery high towers up to 100 MMaintenance of tower requires specially skilled manpower
14Telecommunication Systems Optical Fiber CommunicationWorks by sending signals down hair thin strands of glass fiber.Has incredibly high transmission capacity i.e. bandwidth.Immune to Noise.Freedom from Cross talk.
15Telecommunication Systems Communication Systems in pipelines-Dual redundant hot standby SDH based systems (up to STM-16, 2.5Gbps backbone links).Equipped with Network Management System (NMS) at a central location for monitoring, control & configuration of communication equipment installed at different locations.Optical Fibre Cable Network (12/ 24 Fibre un-armoured cable, ITU-T G.652D, G.655 single mode fibre).Short haul (40-45 km) & long haul ( km) hops.
27. . . P&I SCHEMATIC FOR ORIGINATING PUMP STATION WITH TANK FARM, BOOSTER AND ENGINE PUMPING UNITSLSPSPTMETERPTTTBPPROVERTANKDPTDM..STRTM.TMSEP. FILTERBPDPTSUMPTANKSUMP PUMPLSLTFSPIPISLBSDPIPSPTMAINLINE PUMPING UNITSPIPSPTSDPIPSPIPIPSPIPIPSPIPSPSPSPSPSPSPIUCP/IFPUCP/IFPUCP/IFPTOPTNEXT STATIONControl Loop
30Hazardous Area Classification & Protection Standards Hazardous environments exist in oil refineries, pipeline installations, offshore platforms, chemical plants, mines etc.Electrical equipment must be suitable for the environment in which they are to be used.Hazardous areas are classified with respect to the potential danger of explosion and the areas are divided into zones according to the probability of the hazardous atmosphere- Zone 0, Zone 1, Zone 2.In North America, hazardous areas are classified by classes, divisions, and groups.
31Hazardous Area Classification & Protection Standards Instruments, Equipments in pipeline installations are deployed keeping in view the hazardous area classification.Protections like Flameproof-Explosion proof, Intrinsic Safety and Ingress Protection are ensured while selection of instruments & equipments.Each chemical gas or vapour used in industry is classified into a gas group.Also, to ensure that there is no risk of ignition due to hot surfaces, the equipments/ instruments are classified with regard to the maximum surface temperature of any part of the equipment.
32Hazardous Area Classification & Protection Standards Explosion Protection Methods/ equipment- common typesFlameproof (Ex d)Increased Safety - (Ex e)Pressurisation (Ex p)Intrinsically Safe - (Ex i)
33Hazardous Area Classification & Protection Standards In case of Intrinsic Safety, the system is designed using safety barriers so that the electrical or thermal energy of a particular instrument loop can never be great enough to cause ignition.Intrinsically Safe EquipmentSafety BarrierControl Equipment Room
34Control System Station Control Centre Designed to provide effective & efficient monitoring, safe operation and control of local station and scraper station/ block valves under its control.Acquires data from local PLC and scraper station/ block valves under its control in real time and transmits the same to MCC.Configured with dual redundant hot standby computer systems.
35Control SystemProgrammable Logic Controllers (PLCs) are installed at attended stations/ scraper stations for interfacing the field devices.Remote Terminal Units (RTUs) are installed at unattended block valve stations for interfacing the field devices.
43SUPERVISORY, CONTROL AND DATA ACQUISITION SYSTEM SCADA SystemSUPERVISORY, CONTROL AND DATA ACQUISITION SYSTEM
44SCADA SystemPetroleum Pipeline SCADA networksDedicated SCADA system is installed to provide effective and efficient monitoring and control of the entire pipeline from Master Control Station (MCS).SCADA system has a MCS and Station Control Centres (SCCs) at attended stations viz. pump stations/ delivery stations/ pump - cum - delivery stations.
45SCADA System Automated, regular updates of field conditions. Why is a SCADA System required ?Automated, regular updates of field conditions.Consolidation of information from multiple sources in a single, convenient location.Ability to share process information among multiple spheres of influenceEasy to visualize current status of overall system.
46SCADA System Why is a SCADA System required?.. Automatic alerting of abnormal field circumstances.Ability to directly & immediately respond to abnormal field circumstances through remote control.Maintenance of consistent, accessible archival records.
47SCADA SystemMaster Control Station (MCS)Designed to provide effective & efficient monitoring, safe operation and control of SCCs/ RTUs for entire pipeline.Configured with dual redundant hot standby computer systems.Adopts distributed architecture using intelligent units; all interconnected through a redundant local area network.
49SCADA System Medium used for Data Transfer Leased Lines Fiber Optic Communication SystemSatellite Communication SystemDigital Microwave Communication System
50Data Connectivity for SCADA CP UNITRTUSTM LINKDG SETSCADA SYSTEM
51Data ConnectivityApart from providing voice & SCADA data connectivity, the Ethernet Channels of communication network are utilised for:Extending SAP ConnectivityExtending LAN of Base Stations to other stations for servicesRemote viewing of CCTV CamerasOther applications e.g. connectivity to fire alarm system at RCP locations etc.
53SCADA System SCADA SOFTWARE Application Software Server/ WorkStation HistoryServer/WorkStationAlarm ManagementReport ManagementMMIReal-time Data ServerFrontEndPLCConfiguration
54SCADA System Major functions of SCADA system - Data acquisition Man machine InterfaceAlarm & Event processingControl processing/ commandsTrend generationShift / Daily ReportsManagement Information Reports
55SCADA System Man Machine Interface Multiple Windows support. Multiple VDU support.Alarm / Event ProcessingCentral processing of AlarmsEvent list giving details of events of pipeline / control systemFacility of archiving events / alarms
56SCADA System Archiving of Alarms / events Trend Generation Real time and historical trendsNumber of trends on a single screenHistoryArchiving of Alarms / eventsDisk backup facilityTriggered on timer / event / user action
57SCADA System Reports Daily / Shift reports Automatic report printing facilityExport to different file formats for easyinformation exchangeEquipment availability reportsManagement Information Reports
67Pipeline Application Software All our cross-country pipelines are equipped with Pipeline Application Software comprising Leak Detection, Batch Tracking, and Scraper tracking etc. modules.These are based on real-time Hydraulic Simulation Model driven by Instrumentation from the pipeline, data being sourced through SCADA System.The leak detection system has a crucial role to play in the safe and environment friendly pipeline operations.
68Pipeline Application Software Leak Detection (Pressure-Flow deviation)Detects occurrence of leak and gives estimate of volume, based on differences between the data produced from the Real time model and SCADA measurements.Leak Detection (Volume Balance)Detects occurrence of a leak and gives estimate of volume based upon Mass/ Volume balance.Mass/ Volume In = Mass/ Volume Out : No LeakMass/ Volume In > Mass/ Volume Out : Leak
69Pressure Profiling (Upstream Pressure Control) PuNormal Pressure ProfilePressure Profile under development due to leak (dashed lines)PressurePressure Profile fully developed due to leakPdPipe LengthANIMATED SLIDE showingpipe with associated pressure/distance graph1st click - normal profile, gas in pipe2nd click - leak develops, pressure upstream is constant under assumed pressure control, downstream pressure drops3rd click - new profile due to leak
74Pipeline Application Software Batch TrackingBatch Tracking is done by tracking the movement of a known mass of the product in a pipeline. Time when a batch is introduced in the pipeline goes as basic input to the system. Depending upon the flow rate and density of the product at various points, the movement of the product in the pipeline is calculated.Scraper TrackingScraper Tracking model calculates the position of scrapers in the pipeline. It estimates the arrival time of scraper at the receiving station. It is used to monitor the movement of scrapers and to schedule scraper receiving operations.
77Summing UpAccurate, repeatable and reliable safety instruments and measurements are vital for efficient, more reliable, less interrupted & safer operation of pipelines.The rapid and revolutionary changes in the field of Information Technology (IT) have resulted in a great impact on Instrumentation & Process Control. It has always been our endeavor to update the Safety Instrumentation, SCADA & Telecommunication System of our pipelines with latest state of the art technology.