Instrumentation & Controls

With 4.4 million customers and nearly 46 GW of generating capacity, Atlanta-based Southern Co. has doubled the size of its supervisory control and data acquisition (SCADA) system in the past three years and

Nuclear utilities are facing stringent cybersecurity requirements for plant digital assets that fulfill safety-related, important-to-safety, security, and emergency preparedness functions or that are

Power plants were among the leaders in implementing distributed control systems (DCSs), starting in the 1980s with systems based on mini-computers and continuing through the turn of the century. Although many

Mention the word “drone,” and most people will have a mental picture of what a drone is and does. They likely will think first of military drones carrying missiles and other weapons that could malfunction

Source: POWER During IHS CERAWeek in Houston in early March, POWER Editor Gail Reitenbach sat down with Heiner Markhoff, president and CEO of GE Power & Water’s Water & Process Technologies, to ask him about several issues of concern to power plants.  Though the “water/energy nexus” theme has gained prominence recently, Heiner Markhoff’s comments underscored […]

Great River Energy (GRE) is a not-for-profit electric cooperative that generates and transmits power for 28 member cooperatives throughout southern, central, and northern Minnesota and northwestern Wisconsin

In power plants with drum-type boilers and constant-speed main boiler feed pumps, the feedwater control valve (also referred to as the drum level control valve) provides the means for controlling flow to the

Cybersecurity has become a topic of interest over the past year in generation, owing to new developments in North American Electric Reliability Corp. Critical Infrastructure Protection (NERC CIP) regulations

It seems as if each week brings further bad news for coal power plants. Recently, Consumer’s Energy sought relief to close three power plants, South Carolina Electric & Gas announced it would cease

In an email interview with POWER, Xue Wei, manager for Emerson Process Management Power & Water Solutions, China Business Development, provided some insight into the current state of control systems for Chinese power plants. His responses, edited for style, follow. POWER: How widespread are “state-of-the-art” control systems (yours and others) in new generating plants in […]

Training simulators are worth their weight in gold to the power industry, as well as to most process industries in general. People tend to learn the fastest and the most thoroughly when hands-on trial and

Aging human machine interface (HMI) hardware will eventually become a burden on plant operation. Obsolete HMIs can cause problems with connectivity, historical data loss, and hardware failure. As the hardware

Cybersecurity awareness and best practices are increasingly central to the power generation, transmission, and distribution industry. Industrial cybersecurity concerns, recently heightened by awareness of how

Perhaps because the public has been more obsessed in recent years by cybersecurity breaches involving everything from social media accounts to classified military secrets, the amount of attention given to the

A recently published standard has been adopted globally to address risks arising from the use of business information technology (IT) cybersecurity solutions to address industrial automation and control systems (IACS) cybersecurity in complex and dangerous manufacturing and processing applications. The ISA-62443 series of standards, being developed by the ISA99 committee of the International Society of […]

There are many reasons to anticipate that the use of wireless instrumentation in industrial settings will increase dramatically in the next few years.

What if you could send a control message between two points on the electricity grid—say between a control room operator and a turbine or between a system operator and a generating plant—and know that there’s no way that message can be intercepted, altered, or spoofed to effect malicious ends? That possibility may be only a couple of years away.

Only through proper troubleshooting and then solving the underlying problems can control loop performance be improved. Process design certainly plays a role in control loop performance, but experience has shown that the majority of control loops can perform better—provided that the root cause of the poor performance is found and corrected.

Panelists at a House hearing on Tuesday held to examine steps the federal government and private sector are taking to bolster the nation’s critical infrastructure security shed light on the extent and variety of possible cyberattacks and called for flexible solutions. The hearing was held days after the National Institute of Standards and Technology (NIST) released its initial analysis of hundreds of comments submitted in response to President Obama’s February 2013 cybersecurity executive order.

A software algorithm developed by researchers from North Carolina State University promises to detect and isolate cyber attacks on networked control systems.

Mexico’s Federal Electrical Commission needed a safe way to train new operators at its Laguna Verde Nuclear Power Plant in Veracruz, so it developed a stand-alone process simulator that allows trainees to practice a wide variety of plant operations and responses to incidents without putting the plant itself at risk.

The Advanced Research Projects Agency-Energy (ARPA-E) may be the most important federal agency many in the power industry have never heard of. Whatever generation technology you are associated with, ARPA-E’s work will affect its future.

Mismatched or poorly maintained temperature sensors and thermowells can cause an often-unrecognized error in steam temperature measurement. The problem is often recognized only when sluggish steam temperature response times are noticed. Recent tests suggest some simple ways to resolve the problem.

Many power plants have sediment retention ponds that require control of pH for the effluent. The following guidelines for fossil plant sediment pond pH control will help you design a robust system while staying within budget.

Progress in electronics and information technology has created incentives to replace traditional analog instrumentation and control (I&C) systems in nuclear power plants with digital I&C systems, or systems based on computers and microprocessors. About 40% of the world’s operating reactors have been modernized to include at least some digital I&C systems, according to the International […]

Accurate knowledge of the water level in any boiler drum application is an absolute necessity. While operating a boiler with low water level is one of the leading causes of boiler failure, operating with a high water level may produce less-than-optimal steam, as well as damage to the steam turbine by moisture carryover.

Many recent utility greenfield and rehabilitation power projects have incorporated plant automation, with the goal of reducing the number of operators needed. The essential design principle is to specify control systems and field devices that will achieve the desired operational regime. Here’s how it’s done “Down Under.”

The increased use of intermittent renewable energy sources and the shift to gas-fired combustion turbines places new burdens on the dispatch of many coal-fired units. Steam units must now operate at very low minimum load while maintaining the ability to ramp up and down quickly. High-pressure feedwater heater energy control can improve the system response of such coal-fired units.

A report by the U.S. Department of Homeland Security (DHS) Industrial Control Systems Cyber Emergence Response Team (ICS-CERT) reveals that infected USB drives spread common and sophisticated malware in the control systems at two power plants in separate incidents late last year.

Solar flares have proven destructive effects on transmission grids, but there are many other “black swan events” that threaten modern civilization. Experts disagree about which protective steps should be taken today.