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Comparison of IEC and IEEE Standards for Computer-Based Control Systems Important to Safety

Johnson, G. - 2008

upgrades. To understand the similarities and differences between 1EC and IEEE nuclear power standards layer diagrams were …

Persistent link: https://www.econbiz.de/10009436303

Quantitative Risk reduction estimation Tool For Control Systems, Suggested Approach and Research Needs

Miles McQueen; Wayne Boyer; Mark Flynn; Sam Alessi - 2009

For the past year we have applied a variety of risk assessment technologies to evaluate the risk to critical infrastructure from cyber attacks on control systems. More recently, we identified the need for a stand alone control system risk reduction estimation tool to provide owners and operators...

Persistent link: https://www.econbiz.de/10009436549

Control Systems Security Center Comparison Study of Industrial Control System Standards against the Control Systems Protection Framework Cyber-Security Requirements

Robert P. Evans - 2009

and of the different industries current focus on security. In addition, there are differences in how communication and … that could affect how security requirements are prioritized. The differences in the requirements listed in the Framework … and in the various industry standards are due, in part, to differences in the level and purpose of the standards. While …

Persistent link: https://www.econbiz.de/10009436553

Cyber Assessment Methods for SCADA Security

2009

The terrorist attacks of September 11, 2001 brought to light threats and vulnerabilities that face the United States. In response, the U.S. Government is directing the effort to secure the nation's critical infrastructure by creating programs to implement the National Strategy to Secure...

Persistent link: https://www.econbiz.de/10009436555

Livermore Computing Production Control System, 3.0: Product description. Revision 1

Wood, R.R. - 2008

The purpose of this document is to introduce and describe the Livermore Computing Production Control System, commonly called the PCS. Resource management is very difficult in typical UNIX and related systems. The weakness involves the allocation, control and delivery of the usage of computer...

Persistent link: https://www.econbiz.de/10009436594

Creating competitive markets for ancillary services

Hirst, E.; Kirby, B. - 2009

This report describes the structure of, and results from, a spreadsheet model. The model simulates markets for seven services: losses, regulation, spinning reserve, supplemental reserve,load following, energy imbalance, and voltage support. For completeness, the model also calculates costs for...

Persistent link: https://www.econbiz.de/10009436689

Measurement control at an SRS (Savannah River Site) analytical laboratory

Wills, G.P. - 2008

The measurement control program includes control of the analytical procedures, analyst training and qualification, and mass and balance control. A DEC 11/750 minicomputer and an interfaced Hewlett Packard 9836 desktop computer control these functions. The training and qualification program...

Persistent link: https://www.econbiz.de/10009436704

Stabilization of nonlinear systems with parametric uncertainty using variable structure techniques

Schoenwald, D.A.; Oezguener, Ue. - 2009

The authors present a result on the robust stabilization of a class of nonlinear systems exhibiting parametric uncertainty. They consider feedback linearizable nonlinear systems with a vector of unknown constant parameters perturbed about a known value. A Taylor series of the system about the...

Persistent link: https://www.econbiz.de/10009436834

Time-to-Compromise Model for Cyber Risk Reduction Estimation

Miles A. McQueen; Wayne F. Boyer; Mark A. Flynn; George … - 2009

We propose a new model for estimating the time to compromise a system component that is visible to an attacker. The model provides an estimate of the expected value of the time-to-compromise as a function of known and visible vulnerabilities, and attacker skill level. The time-to-compromise...

Persistent link: https://www.econbiz.de/10009437270

Quantitative Cyber Risk Reduction Estimation Methodology for a Small Scada Control System

Miles A. McQueen; Wayne F. Boyer; Mark A. Flynn; George … - 2009

We propose a new methodology for obtaining a quick quantitative measurement of the risk reduction achieved when a control system is modified with the intent to improve cyber security defense against external attackers. The proposed methodology employs a directed graph called a compromise graph,...

Persistent link: https://www.econbiz.de/10009437271