Instrumentation & Controls

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.

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.

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.

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.