O&M

Like some of those tests your doctor is always after you to get, boiler chemical cleaning is something that most of us would rather not think about but that we all agree is necessary. Adding to our general discomfort with the process are new Environmental Protection Agency regulations, which make the disposal of chemical cleaning […]

To ensure that its nuclear plants do not meet the same fate as those damaged and destroyed by the March 2011 events at the Fukushima Daiichi plant—should they be hit by similarly severe natural disasters—Tennessee Valley Authority (TVA) is using multiple new approaches to enhance safety. First Installation of New Spent Fuel Pool Instrumentation Spent […]

Skilled maintenance and service teams inspect critical infrastructure, perform preventive maintenance, and quickly respond to issues to keep service levels high. It is critical that such teams work with as-built drawings that reflect original plans along with the cumulative changes. Armed with the current drawings, service teams can avoid surprises. The challenge is that drawings […]

This supplement to “Strategies for Inspecting HRSGs in Two-Shift and Low- Load Service” in the August issue includes additional discussion of the heat recovery steam generator (HRSG) Inspectors Toolkit and HRSG Inspection Guide sections of the main article plus additional photos of damage caused by rapid startups and two-shifting of units over time. More Tools […]

A combination of falling natural gas prices, greater integration of renewable generation, and advancing technology has meant changing roles for many plants, particularly gas turbine combined cycle plants. (See “Managing the Changing Profile of a Combined Cycle Plant” in the June 2014 issue.) The added wear and tear on plant equipment, and the changing maintenance […]

Aheat-recovery steam generator (HRSG) is much like other power generation equipment—run it at design conditions and chances are it will run with high availability and require only routine maintenance for

The utility-scale solar market is rapidly growing in North America, representing a large area of opportunity for project and product developers alike. The market more than doubled in size between 2012 and 2013

Problematic power plant systems diminish availability and directly affect plant productivity and efficiency. In order to maintain availability, electrical testing and maintenance services are imperative. Two

Eddy currents are electrical currents induced within conductors by changing magnetic fields. They are commonly used in nondestructive evaluation (NDE) and corrosion monitoring of structures with painted surfaces. The work of eddy current technicians, who specialize in the electromagnetic modality, requires a high degree of accuracy even when working under challenging testing conditions. Traditionally, technicians relied on […]

Conducting conveyor inspections and maintenance can pose significant risks to employees, as these activities bring workers into close proximity with the conveyor system under potentially dangerous conditions. Staff members are exposed to moving belts, rolling components, and pinch points, all in an environment that is commonly dirty, distracting, and sometimes noisy. As plants struggle with […]

Brazil’s Belo Monte hydropower project includes a complex of dams, numerous dikes, and a series of canals supplying two different power stations with water. With a rated capacity of 11,233 MW, it will be the

On May 16, 2014, the Environmental Protection Agency (EPA) is scheduled to release its long-delayed final 316(b) rule for existing facilities. The rule—which was supposed to have been issued Apr. 17 after

With the growing need for operational flexibility across the power industry, the combined-cycle gas turbine (CCGT) fleet is increasingly being subjected to load-following and cyclic operation. This change in

All power plants must continually strive to control operating expenses, but it is particularly important for coal-fired facilities to cut costs these days to stay competitive while meeting ever-more-stringent

Todd Hillman As hurricane season begins this year, utilities across the Gulf Coast will have a new partner as they work to keep the lights on after extreme weather events. Starting in late 2013, the

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

Many coal-fired power plants in operation today do not have a fire-extinguishing medium installed in their coal storage silos. CO2 injection would generally be the preferred method, and is used in many plants, but what do you do when your plant was left without this option after construction? Wet or just plain “hot” coal making […]

A report released on May 5 by staffing firm Manpower suggests that utilities are under a “double squeeze”—a shortage of skilled workers at both the entry and senior level—caused by an aging workforce, advances in technology, and a breakdown in the educational system. In its report, “Strategies to Fuel the Energy Workforce,” Manpower noted that […]

It’s no secret that equipment requires maintenance. Just as your personal vehicle needs an oil change periodically, a power plant needs to shut down regularly for a tune-up to take care of all those little

The Occupational Safety and Health Administration (OSHA) on Tuesday issued a final rule that revises a 42-year-old construction standard for electric power line work to make it more consistent with general industry standards.  The final rule, which is scheduled to be published in the Federal Register on April 11 and becomes effective 90 days after that, […]

Many generation companies have made safety a cultural norm, often beginning internal meetings with a safety note and requiring monthly safety training sessions. Zero lost time accidents during the two- or

Taking a cue from the petrochemical sector, power plants may be on the cusp of applying high-fidelity 3D models of the as-built plant environment to streamline flow-accelerated corrosion (FAC) and other

The gas sealing systems used on rotary, regenerative air preheaters (APHs) have evolved little from the metal strip configuration used on the first Ljungström preheaters nearly a century ago. Metallic strip

Currently accounting for over 16% of global energy production, and with an expected growth rate of 3% per year for the next quarter century, hydroelectric power generation continues to grow as the front runner

Increasing Environmental Protection Agency (EPA) restrictions pertaining to emissions from coal-fired power plants, the increasing cost of coal operations, and the decreasing cost of natural gas provide strong

Omaha Public Power District (OPPD) operates four baseload plants in the state of Nebraska. In 1993, when the North Omaha Station added a new warehouse, OPPD sought help from Vidmar to create effective storage

3D metal printing is still an experimental process in nearly all industries, used primarily for prototypes and test products. But if Siemens and GE have their way, it will soon become a standard means of rapidly producing small numbers of industrial parts. Siemens announced in December that it would begin using 3D printing—also known as […]

Mechanical draft fans are used exclusively in power generation to move air and gas from one point to another. They create draft in a process system so that fluid media can be induced, forced, and boosted

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

Fire protection for power plant turbine rooms has typically been a game of tradeoffs. Enclosure integrity issues in older facilities can render CO2 and halon systems ineffective. In new and old facilities