presentation on scada system
TRANSCRIPT
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PRESENTATION ON SCADA SYSTEM
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SCADA SYSTEM
222 January 2018
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SCADA (Supervisory Control & Data Acquisition) System
TO MONITOR & CONTROL THE TO MONITOR & CONTROL THE WIDELY SPREAD FACILITIES FROM A CENTRALIZED LOCATION
CENTRALIZED ALARM, EVENT & REPORT MANAGEMENT FOR ALL THE DISTRIBUTED FACILITIES
PROVIDE ‘REMOTE-EYE’ TO THE OPERATION OF WIDELY SPREAD FACILITIES
TO PROVIDE INPUTS FOR LEAK DETECTION SOFTWARE
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SCADA SYSTEM OBJECTIVES
Centralized checking of status of various gwidely spread facilities w.r.t
Readiness to dispatch productsP i t tPumping statusReadiness for receipt & distribution of productsStatus of valvesStatus of valves
To ensure that the requested control action will not result in unsafe operationaction will not result in unsafe operation
To ensure proper shutdown by closing various remote facilities in orderly manner as per pre-defined sequence
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TYPICAL CROSS COUNTRY PIPELINE
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TYPICAL CROSS COUNTRY PIPELINE
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SCADA SYSTEM HARDWARE COMPONENTS
SCADA system Server & WorkstationsWorkstations
Remote WorkstationsRemote Workstations
Remote Telemetry Units (RTU)Remote Telemetry Units (RTU)
WAN RoutersWAN Routers
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SCADA system Server & Workstations
Separate Redundant SCADASeparate Redundant SCADA server & MMI workstations with Client-Server concept implemented at hardware &implemented at hardware & software level
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REMOTE WORKSTATION•Remote workstation is normally envisagedRemote workstation is normally envisaged at manned stations (other than Master Station location): -
Pump/ Compressor stations
Terminals
t id l t SCADA tto provide complete SCADA system capability (graphics & reports) so that the operators at these locations are fully informed of: -informed of: -
All the monitoring variables of remote facilities
Status of various remote facilitiesStatus of various remote facilities
Alarms/ Events for remote facilities
Issue controls (under password control)
9
( p )
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REMOTE TELEMETRY UNIT (RTU)
Microprocessor based intelligent unit p gsupporting CPU, RAM, Real time clock, EPROM.
The basic unit of RTU consists of The basic unit of RTU consists of Power Supply ModuleProcessor ModuleI/O ModulesCommunication ModulesSerial Interface Module
Interfaces with Field instruments throughInterfaces with Field instruments through intelligent input/ output subsystem and converts the information into the digital frame structure for interfacing with Telecom channels through communication modules
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RTU
The RTU provides the engineering functions of:p g g
High/ low limit checkingTime taggingE i i it iEngineering unit conversionSelf diagnosticsRemote configuration and downloadingInterfacing with PLC/ Flow computers etc.Interfacing with PLC/ Flow computers etc.
The various I/O cards provided are:
Digital input cardDigital output cardAnalog input cardAnalog output card
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SCADA SYSTEM COMMUNICATION PROTOCOL
SCADA system Open communication protocols for communication between Master station & RTUs :Master station & RTUs :
DNP 3.0 3 0
IEC 60870-5-104 IEC 60870 5 104
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TYPICAL SCADA SYSTEM ARCHITECTURE
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SCADA SYSTEM
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SCADA SYSTEM
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SCADA SYSTEM
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SCADA System Engineering activities
Review of basic Process documents (Process Design Basis, P&IDs) as applicable for SCADASCADA Design BasisgFirming up of system configuration and specifications of SCADAFurnishing room sizes, layout, etc. toFurnishing room sizes, layout, etc. to Architectural Group.Preparation of Material RequisitionTechnical bid evaluation of bidsPreparation of Purchase RequisitionReview of vendor’s detailed engineering documentsParticipation in FATSite assistance as required
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Inputs Required from other Groups
Electrical I/O signalsElectrical I/O signals
Cathodic protection system I/O signals
Pipeline Schematic drawing
Process
P&IDs
P d i b iProcess design basis
Pipeline Operation & Control Philosophy
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Inputs preparation for overall Engineering
Control room Sizing
Electrical Loads for UPS
Heat Loads for air conditioning.
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REMOTE WORK STATION
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TYPICAL PIPELINE P&ID
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