O&M

In the January issue, I introduced the concepts of highly reliable organizing (HRO) and resilience engineering with a promise to address the remaining principles. As a quick review of the first article

Although other renewable sources of energy may be growing at a faster rate, more electricity continues to be generated in the U.S. by conventional hydropower than by wind, solar, and geothermal power combined

Geothermal technology, though over a century old, is constantly changing. Developments in mapping techniques have improved exploratory practices. Plant adaptations, such as hybrid technologies and the

Challenge:
After a major refurbishment, a Canadian nuclear plant required additional process and boiler feed water for plant start-up and commissioning.
The plant’s raw water supply contained measurements ranging from 1-10 NTU, conductivity from 70-100 and color units ranging from 180-420. The plant also experienced highly variable flow rates, ranging from 0-600 GPM, and issues with the

Challenge
A global polymer producer located in Ohio sought to improve the annual outage cleaning of its heat exchangers.
Historically, industrial cleaning contractors hand lanced the heat exchanger tubes, servicing four to six exchangers per night for two weeks to fit within the outage schedule. But often, multiple heat exchangers would require re-cleaning to allow for heat

MPW’s Bundle Blaster Side Cleaner system is designed to remotely clean the shell side of small to medium
sized tube bundles, up to 36 feet in length. The tube bundle is placed on hydraulically actuated rollers to
incrementally turn the bundle during the cleaning process while the cleaning head runs horizontally on a track
over the bundle. MPW’s

Steam turbines have to be warmed slowly to avoid excessive differential expansion of the various components, rotor stress, and potentially reduced service life. For that reason, startup times must be extended

There may be multiple closed-loop cooling systems at your power plant. Chances are good that they cool or control temperature on some very critical components. The two that are most likely to exist are the

Problem
A Florida pulp and paper mill faced a complicated, dangerous process to clean its power boiler during scheduled outages.
Previous efforts to clean the boiler included manual water blasting from scaffolding, which posed a safety risk to workers below due to the potential for falling debris.
Solution
The Operations team at MPW Industrial Services recommended that the facility’s

Case Study: MPW’s Automation Simplifies RO Replacement Process for Indiana Energy Plant

INDUSTRIAL WATERMPW’s emergency response pays off for Virginia Challenge:
When a Virginia power station had an issue with its existing Reverse Osmosis [RO] process, it called on MPW to supplement its water needs during an excessively cold winter.
The plant lost RO functionality at one of its four power-production units, which would severely damage its ability to

When we undertook an initiative at Granite Ridge Energy (GRE) to identify, prioritize, and assess components that were due for their 10-year assessments, we didn’t know quite what we were taking on or how to

The identification and containment of coal ash has risen to the top of the priority list for plant managers across the U.S. after inadvertent releases of coal ash into unintended areas resulted in adverse

Drax Power Station, a 3,960-MW six-unit facility located in North Yorkshire, England, is the largest power plant in the UK. It was constructed in two stages, with the first three units completed in 1974 and

The historic winter storm that buried the Eastern U.S. in snow over the weekend shut the lights off for more than a million customers from Arkansas to Massachusetts as it downed power lines and hampered operations at some power plants. According to the Department of Energy’s Office of Electricity Delivery and Energy Reliability, at one […]

Grid resiliency has become a widely discussed topic recently. Experts have been called before congressional hearings to testify on the topic, and close calls—including a massive solar storm that missed Earth

The Electric Power Research Institute (EPRI), in conjunction with Suprock Technologies, has conducted a research project to develop and demonstrate an advanced wireless sensor technology for monitoring torque

It is true that electric motors and transformers are some of the most dependable pieces of equipment installed at power plants. They can, in many cases, withstand a high level of mistreatment while continuing

Gas-fired power is booming—even more than expected. For only the second time ever, but also the second time this year, gas generated more electricity in a month in the U.S. than coal. According to statistics

Coal pulverizers are the heart of a pulverized coal-fueled boiler. Often, the root causes of nonoptimized combustion lie with the pulverizers. Capacity; reliability; and environmental issues such as slagging

Two hyperbolic cooling towers rise 495 feet over Exelon Corp.’s Byron Generating Station about 110 miles west of Chicago, Ill. The towers help cool the two Westinghouse pressurized water reactors that are capable of generating up to 2,346 MW at the site. Like all classic wet transfer hyperbolic cooling towers (Figure 1), the Byron Generating […]

Some critters may be cute, but when jellyfish gum up power plant cooling systems; birds, rats, snakes, or squirrels cause electrical shorts; or invasive mollusk species obstruct hydropower plant pipes, losses can be steep. Here’s how some power plant operators are dealing with their critter troubles. There are countless cases of wildlife entering power plant […]

As many coal-fired power plants designed for baseload service are asked to cycle, unforeseen stresses have been introduced to boiler pressure parts. Understanding the effects and implementing mitigation strategies could prevent premature component failure and keep facilities operating reliably. On August 3, 2015, the U.S. Environmental Protection Agency finalized the Clean Power Plan, which calls […]

Creeped out and fatigued—that’s the state of many coal-fired boilers these days. Understanding failure mechanisms and suitable testing methods for identifying potential trouble can help you find problems before the problems find you. Even as the current regulatory environment pushes new power generation to utilize natural gas over other fuel sources, a significant amount of […]

Coal dust combustion events injured employees and damaged equipment at Laramie River Station in May 2013. Any dust-filled facility could consider implementing some of the plant’s corrective actions to reduce the risk of experiencing a similar incident. When Laramie River Station (LRS), near Wheatland, Wyo., was built nearly 35 years ago, it was state-of-the-art. Constructed […]

Entergy Corp.’s Palisades Power Plant returned to service on Oct. 19, following a month-long outage to implement upgrades, inspections, and safety enhancements.  The Michigan plant was shut down on Sept. 16 to begin a planned refueling outage. The company spent $58 million for upgrades and plant inspections, and $63 million for new fuel. The outage […]

Shaft collars are used as stops or locators on shafts in a wide variety of applications. There are two basic types. One uses a setscrew to lock the collar in place, while the other utilizes a clamp-type collar. Shaft Collar Designs Setscrew collars are the oldest type of shaft collar. These units function by gouging […]

Replacing blades on a wind turbine is not a simple task. Blades range from 40 to 60 meters in length and can weigh 16 tons or more. Combined with hub heights that can exceed 100 meters and locations that are, by definition, subject to prevailing winds, replacing blades becomes challenging. Add in the cost of […]

In presentations to the Federal Energy Regulatory Commission (FERC), the nation’s regional transmission organizations (RTOs) and independent system operators (ISOs) on Sept. 17 outlined measures they are taking to prevent issues if faced with extreme weather this winter.  The measures are to prevent widespread generation outages as occurred during the Jan. 6–7, 2014, polar vortex. […]

Duke Energy Indiana reached a settlement agreement with some of the state’s key consumer groups related to operating costs at its Edwardsport integrated gasification combined cycle (IGCC) coal power plant. The deal was submitted to state regulators on Sept. 18 and is subject to Indiana Utility Regulatory Commission (IURC) approval. If approved, it would resolve […]