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Impact of SCADA on Research Projects at the Center for Petroleum Security at the University of Texas at Tyler
Nary SubramanianAssistant ProfessorDepartment of Computer ScienceThe University of Texas at [email protected]: 903-566-7309
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Petroleum Industry in Texas
Texas is the leading crude oil-producing State in the Nation (excluding Federal offshore areas, which produce more than any single State).
The State’s signature type of crude oil, known as West Texas Intermediate (WTI), remains the major benchmark of crude oil in the Americas.
Texas’s 27 petroleum refineries can process more than 4.7 million barrels of crude oil per day, and they account for more than one-fourth of total U.S. refining capacity.
Approximately three-tenths of total U.S. natural gas production occurs in Texas, making it the Nation’s leading natural gas producer.
(Source: US Energy Information Administration)
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Petroleum Map of Texas
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Petroleum Industry in East
Texas
Referred to as Cotton Valley
Covers East Texas and Northern Louisiana
The East Texas Field was 43 miles long and five miles wide and extended into five counties: Rusk, Gregg, Upshur, Smith, and Cherokee.
At its peak, this field would produce 60 percent of all Texas oil, 37 percent of the oil in the United States, and 22 percent of the oil in the world.
There are eight treatment plants and seven processing plants
Several pipeline systems go through East Texas
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Pipeline Systems - Local
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Pipeline Systems - Interstate
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Security Issues in Petroleum
Industry
Physical damage to infrastructure including pipelines Physical access control for plants
Maps and notices for pipelines
Accidents or intentional damage
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Security Issues in Petroleum
Industry
On June 7, 2010, gas pipeline in Johnson County, Texas. Caused by workers installing poles for electrical lines. One worker killed, six injured.
On September 9, 2010, a high pressure gas pipeline exploded in San Bruno, CA, a suburb of San Francisco. The blast destroyed 38 homes and damaged 120 homes. Eight people died and many were injured. Ten acres burned in total
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Security Issues in Petroleum
Industry
Logical systems vulnerability DCS
SCADA
PLC’s, RTU’s
Example:
In 1999 a 16-inch gas pipeline ruptured in Bellingham, Washington, because a SCADA system fault locked out engineers from the control room preventing them for relieving pressure on valves in the pipeline
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What is SCADA?
• SCADA is the abbreviation for Supervisory Control And Data Acquisition.
• It generally refers to an industrial control system: a computer system monitoring and controlling a process.
• The process can be industrial, infrastructure or facility
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SCADA Systems
Industrial processes include
manufacturing,
production,
power generation,
fabrication, and
refining.
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SCADA Systems
Infrastructure processes include
water treatment and distribution,
wastewater collection and treatment,
oil and gas pipelines,
electrical power transmission and
distribution, and
large communication systems.
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SCADA Systems
Facility processes include
buildings, airports,
ships, and
space stations.
They monitor and control HVAC,
access, and energy consumption.
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What is SCADA?
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SCADA Architecture
FurnaceGas Inlet Valve
Control Computer
Archive Operator
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SCADA Architecture
Oil Pipeline
RTU RTU RTU
Master
Station
Communication Links
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Levels of Control
RR
PLCPLC
RTURTU
Level 0
Level 1
Level 2
Level 3
Level 4
SimplicityFunctionalCost EffectiveAutomation of Manual
Labor
ControllableOperator DependabilityCommunication Requirements
Equipment ReliabilityReduction of operatorsRemote controllability
Control AutomationEquipment ReliabilityProgrammability of controlsBandwidth requirements
Geographical distributionMore Control automationEquipment reliabilitySoftware reliabilitySecurity
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SCADA Market
• Oil and gas: to grow at 9% over next five years; to reach almost $1.5 Billion by 2012
• Water and wastewater: to grow at 5% over next five years; to reach almost $300 Million by 2012
• Electric power: to grow at 6% over next five years; to reach almost $2 Billion by 2012
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Major Players
• GE• HP• Harris• Siemens• IBM• Sun Microsystems• ABB• And many others
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National Importance
• Critical infrastructure protected by SCADA systems
• Reliability of SCADA extremely important
• Security of SCADA extremely important
• Very little standardization
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• Monitor flow of crude oil through pipelineso from source to destination o from source to storage tank farmso typically rate of flow is the main item measuredo if flow rate is low then pumps are activated
low bandwidth of communication sufficient to have sensors at start and
end points
SCADA Usage in Petroleum
Industry
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SCADA Usage in Petroleum
Industry
• Monitor flow of natural gas through pipelineso typically rate of flow and pressure are
measuredo "packing" and "unpacking" occurs to
meat elastic demand• Pipe segments are geographically
distributed and could be tens to hundreds of miles long
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DCS Usage in Petroleum Industry
• DCS used in:o offshore oil rigso DCS used in tank farmso DCS used in oil refineries
• In a refinery, storage tanks separate SCADA and DCS• In a refinery, the most important inputs to a DCS are
temperature, pressure, flow rate, and level• Sometimes conveyor belts are controlled and in that
case speed is an important input• In a refinery, control is almost always a valve.• Another item controlled is pump start/stop.
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• Physical Parameters Measured:o Flow rateo Pressureo Temperatureo Levelo Speedo Valve statuso Pump status
• Properties that are importanto Reliabilityo Securityo Redundancy
SCADA Parameters
Evaluated
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Important Research Issues
• DCS does not use wireless sensors most of the timeo problems include:
reliability metals (usually steel) interacts with wireless
power supply wiring wireless sensors costs $10/feet
o some refineries trying out wireless sensors for flares monitoring measures flow and gas analysis transmits data to a WiFi access point
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• Internet based control is not supportedo chief problem is reliabilityo practitioners prefer complete separation
of DCS system from enterprise system
Important Research Issues
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Academic Research Centers for Petroleum Engineering
• UTA's Center for Petroleum and Geosystems Engineeringo http://www.cpge.utexas.eduo encourage and develop interdisciplinary research in
petroleum and geosystems
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• Texas Tech's Center for Applied Petrophysical and Reservoir Studieso http://www.depts.ttu.edu/pe/dept/researc
h/caprs.phpo to promote interdisciplinary research in
petroleum industry
Academic Research Centers for Petroleum Engineering
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• University of Houston's Composites Engineering and Application Centero http://www.egr.uh.edu/CEAC/o to undertake research in support of the
reliable and the economical use of composite materials in onshore and offshore operations.
Academic Research Centers for Petroleum Engineering
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• CPSR to be set up at UT Tyler• Funded by Department of Justice• Will be interdisciplinary• Will be supported by local industry
including Delek Refining at Tyler• Will focus on SCADA and DCS
security research
Center for Petroleum Security Research
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Impact of CPSR on Research
Considering SCADA systems of
systems
Evaluating SCADA NFRs
Automating SCADA designs
Synthesis
analysis
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SCADA systems of systems
PhysicalSystem
SCADA/DCS
NetworkManagement
Power Grid
System Security Control
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Impact of CPSR on Curriculum
• CPSR can aid curriculum development
• Serve as the location for lab experiments
• Serve as the training place for faculty members
• Potential impact on Computer Information Systems Program – SCADA security management?
• Potential impact on Computer Science Program –SCADA security?
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Typical Approach to Introducing SCADA in CIS
• Programming covered in first year• Networking part of senior year• Project management part of senior year
capstone course• SCADA basics could be an elective
(junior/senior)• SCADA lab could be an additional 1
credit elective (junior/senior)
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SCADA Course
• Basics• Protocols (ModBus, FieldBus, ProfiBus, DNP)• RTU Technologies• Master Station Technologies• HMI• System Architecture• System Integration• Project• Presentation
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SCADA Lab
• SCADA System Design• SCADA System Implementation• Interfacing systems using standards• Development of HMI• PLC implementation• Integrating PLC to SCADA System• Simulations of SCADA System
Extensions
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Sequence for SCADA Minor
• C++/C# .NET programming (COSC 1137, COSC 4309)
• HMI (COSC 4309)• Project management (COSC 4375)• Networking (COSC 4325)• Elective: SCADA + Lab• Security (COSC 4361)• Total: 19 credit hours
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CPSR Development
Hire researchers in SCADA security
Collaborate with other research
centers
Collaborate with other Universities:
SMU, for example
Collaborate with industry
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Challenges
• Industry collaboration is almost a must• Problems solved by the Center should be relevant• Solutions should be testable in an industrial
environment• Different sections of the industry – drilling,
transportation, and refining – will need to participate
• Academia should introduce certificates, minors, and programs• Relevant texts• Home department?• Industry needs have to be addressed• Standardization – on the lines of ABET
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Conclusions
• SCADA is a rapidly growing industry segment• SCADA for petroleum industry is a rapidly growing
niche
• Few centers for petroleum research consider SCADA
• CPSR to be set up at UT Tyler with DOJ funding
• CPSR will include SCADA research as a major component
• CPSR will drive both research and curriculum development
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References
• R. I. Williams, Handbook of SCADA Systems for the Oil and Gas Industry, 1st Edition, Elsevier Advanced Technology, 1992.
• David Bailey and Edwin Wright, Practical SCADA for Industry, Elsevier, 2003.
• Ronald L. Krutz, Securing SCADA Systems, Wiley Publishing, 2006.