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September 2014 · Energy-Tech Magazine
Monday September 1, 2014
You need a boiler tube analysis – Now what?
Wendy Weiss and Terry Totemeier, Ph.D., Structural Integrity Associates Inc.
Monday September 1, 2014

For more than 30 years, boiler tube failures have been the leading cause of lost boiler availability and forced outages. Determining the mode of damage responsible for a failure is important to ensure that the proper corrective actions are taken and ...

ASME: Quantifying correction curve uncertainty through empirical methods
Christopher R. Bañares, Thomas P. Schmitt, Evan E. Daigle and Thomas P. Winterberger, General Electric Power & Water
Monday September 1, 2014

Introduction
The accuracy of a thermal performance test is typically estimated by performing an uncertainty analysis calculation in accordance with ASME PTC 19.1, or another code equivalent to it. The test uncertainty is a measure ...

Avoiding critical voltage collapse in a changing environment
Tony Oruga, P.E., Eaton’s Cooper Power Systems Division
Monday September 1, 2014

For years, capacitor banks have solved power quality challenges in transmission and distribution networks, including voltage collapses and phase shifts associated with alternating current (AC) power supply systems. What can power suppliers do to correct ...

Wednesday August 6, 2014
Power plants, water treatment facilities apply new method to diagnose motor problems
Contributed by Electrom Instruments
Wednesday August 6, 2014

With advanced, user-friendly surge testers and windings analyzers, motor diagnostics can now be performed at the push of a button.

The electronic devices used to test and analyze electric motors and other equipment are much more powerful than ...

Friday August 1, 2014
Control system modernization increases reliability and improves owner’s maintainability for Michigan municipality
Kevin Giroux, Turbine Technology Services
Friday August 1, 2014

Turbine Technology Services (TTS) successfully retrofitted two OEM control systems operating GE MS6001B Heavy Duty Industrial Gas Turbines for Holland Board of Public Works (HBPW) between the third quarter of 2013 and the second quarter of 2014. The ...

ASME: Economic design of hybrid wet-dry cooling systems
R.W. Card, CB&I
Friday August 1, 2014

All thermal power plants release waste heat to the environment. The waste heat ranges from about 70 percent of the energy in the fuel for a traditional Rankine-cycle nuclear power plant to about 40 percent for a modern combined-cycle gas turbine plant.

The ...

Power generating asset management
Komandur Sunder Raj, Energy-Tech contributor
Friday August 1, 2014

This article provides an overview of current standards and initiatives that are involved in developing and implementing an optimum power generating asset management (PGAM) program. The article highlights the need for a holistic approach to optimizing ...

Increasing operational flexibility of burners in tangentially fired boilers
Jim Sutton, Alstom
Friday August 1, 2014

Successful operation of a coal-fired power plant increasingly requires more flexibility. Longer times between major outages, more frequent start-ups and shut-downs, and for many plants, more time at minimum load. This article explores recent advances ...

Tuesday July 15, 2014
What are you learning this summer?
Tuesday July 15, 2014

Don’t slack off this summer – learn something! There are plenty of options to choose from, many including PDH credits.

Tuesday July 1, 2014
Gas by day, electricity by night: 4kV electric heater enables on-demand fuel switching, balances electric load demand
Gaurav Dhingra and Jeff McClanahan, Gaumer Process
Tuesday July 1, 2014

For generations, U.S. manufacturing has been powered, quite literally, by fossil fuel. Natural gas, oil and coal have historically run the workhorses of American industry – the heaters and boilers that process raw materials into usable products ...

New alternatives for oil changes
Diane Closser, CLS MLT I, Energy-Tech contributor
Tuesday July 1, 2014

In a perfect world, lubricants would not degrade. There would be no ingress of contaminants, excellent storage and handling procedures would be common, and every employee who came in contact with oil or grease would be trained and certified to do ...

ASME: Dual injection distributed combustion for stationary gas turbine application
Ahmed E.E. Khalil and Ashwani K. Gupta, University of Maryland, College Park
Tuesday July 1, 2014

The quest for clean and sustainable energy, along with energy security and independence, has motivated researchers to develop advanced energy conversion systems that can furnish the current and future energy needs with minimal impact on the environment ...

Thursday June 19, 2014
Energy-Tech University Webinar: Steam and Gas Turbine Troubleshooting
Available for purchase and download
Thursday June 19, 2014

Didn't have a chance to sign up for Energy-Tech University's Steam and Gas Turbine Troubleshooting webinar? Don't worry - the webinar recording is

Sunday June 1, 2014
The importance of pure, dry hydrogen cooling gas
John Speranza, Proton OnSite
Sunday June 1, 2014

Power plants need to do all they can to produce electricity safely and efficiently. The good news is that there’s a relatively simple switch that can have a big impact on a plant’s ability to maximize its electricity output and improve ...

Hybrid systems for gas turbine inlet cooling
Marcus Bastianen, P.E., Everest Sciences Inc.
Sunday June 1, 2014

With natural gas prices at near-historical lows, and regulatory pressure driving plant owners to generate “greener” power, the need for efficiency has never been greater. Turbine inlet cooling using hybrid systems can increase power output ...

ASME: Taking on Goliath – Implementing an effective RAM program for an existing power plant
Brian Wodka, RMF Engineering Inc.
Sunday June 1, 2014

Here is a quick story about a power plant. It begins with an operator promoted to chief with all the intentions and motivation to make the plant a run like a top. Before long, reality sets in and he becomes aware of the mixed-and-matched components, ...

Ensuring cooling tower cleanliness in a more stringent regulatory environment
Brad Buecker, Energy-Tech contributor
Sunday June 1, 2014

The shale gas revolution has led to planning and installation of many new combined-cycle power plants. For a long time none of the proposals I have seen called for once-through condenser cooling, due to pending 316a and 316 b regulations that respectively ...

Thursday May 15, 2014
Registration is open for the 2014 ASME Power Conference
Thursday May 15, 2014

Registration is open for the 2014 ASME Power Conference, July 28-31, in Baltimore, Md. 

With a theme of ‘Plant Optimization and Knowledge ...

Monday May 12, 2014
Protecting our water – keep chemicals in the tank
Leaking or overfilled tanks can cause environmental problems, contaminate drinking water and cost a company millions of dollars. Proper instrumentation, monitoring and control can prevent these problems
Bill Sholette and Ricardo Chavez, Endress+Hauser
Monday May 12, 2014

Recent events in West Virginia have shown that our water supply is in jeopardy of contamination from leaks or overfills of storage and processing tanks (Figure 1) at chemical, petroleum, water/wastewater and similar facilities.

In Charleston, ...

Thursday May 1, 2014
ASME: Impact of harmonics from distributed energy resources on distribution networks
Reza Arghandeh, UC Berkeley, Berkeley, Calif.; Ahmet Onen, Virginia Tech, Blacksburg, Va.; Jaesung Jung, Virginia Tech, Blacksburg, Va.; Danling Cheng, EDD Inc., Blacksburg, Va.; Robert Broadwater,
Thursday May 1, 2014

Introduction and previous works
Smart grid realization involves a steady increase in inverter-based components like Distributed Energy Resources (DER), energy storage systems and plug-in electric vehicles. These kinds of renewable ...

The trouble with transmitters
Proper maintenance requires focusing on what the device does, not what it is
Mike Schultz and Stace Smith, The Asset Performance Group
Thursday May 1, 2014

Maintenance, at its most basic level, is a set of tasks that preserves the functions of a piece of equipment at a desired standard of performance.

We take the car in for an oil change to preserve the anti-wear capabilities of the engine so ...

Hydrogen safety for large turbo-generators
Steve Kilmartin, E/One Utility Systems
Thursday May 1, 2014

The need for hydrogen
Central power stations have been producing electric power and supplying it to a customer base since the early 1880s. As the demand for power increased, so did the physical size of air cooled electric generators ...

Tuesday April 15, 2014
Dust management helps Florida power supplier improve safety, reduce maintenance
Shane Tighe, Martin Engineering
Tuesday April 15, 2014

Orlando Utilities Commission - Stanton Energy Center (SEC) is one of Central Florida’s leading environmental stewards, meeting or exceeding all air permit limits with advanced pollution control equipment while generating electricity to serve ...

Tuesday April 1, 2014
ASME: A dynamic process model of a natural gas combined cycle – model development with startup and shutdown simulations
By Eric Liese and Stephen E. Zitney, National Energy Technology Laboratory
Tuesday April 1, 2014

The National Energy Technology Laboratory (NETL) Computational Science and Engineering Division (CSED) recently deployed a high-fidelity, full-scope, real-time dynamic ...

The importance of proper level control of feedwater heaters
By Mike Catapano and Eric Svensson, Powerfect Inc.
Tuesday April 1, 2014

One of the most common causes of tube failures in a feedwater heater (FWH) is the improper control of the internal liquid level, which also can cause operational and maintenance costs that might lead to premature replacement. These problems are not ...

Developing novel applications of predictive maintenance techniques
Gary Noce, Electric Power Research Institute
Tuesday April 1, 2014

As U.S. fossil plants age and components reach end of life, equipment condition monitoring and associated data analysis are increasingly critical to maintain reliability and avoid failures.

One of the key tools for equipment monitoring involves ...

Monday March 10, 2014
Joining FRP pipe with grooved couplings
Doug Dole, Victaulic
Monday March 10, 2014

The power industry employs fiberglass-reinforced plastic (FRP) pipe because it provides corrosion resistance, and in some cases abrasion resistance, at a lower cost and lighter weight than higher-end stainless steel and lined metallic piping systems. ...

Saturday March 1, 2014
ASME: Parallel flow boiler designs to minimize erosion and corrosion from dust loaded flue gases
Juergen H. Peterseim, University of Technology Sydney; Prof. Udo Hellwig, ERK Eckrohrkessel GmbH; and Karin Endrullat, ERK Eckrohrkessel GmbH
Saturday March 1, 2014

Raising the efficiency of boiler systems with contaminated fuels, such as municipal solid waste (MSW), is on the agenda of almost all plant suppliers and operators. Several options exist to raise the efficiency, including steam reheating [1] ...

Anti-friction bearing problems? Let’s talk about it
Tom Davis, Energy-Tech contributor
Saturday March 1, 2014

An internal medicine physician was once quoted while talking to a very silent patient in the examining room, “I didn’t take veterinary medicine. I’d appreciate if you answer my questions with a little more information than grunting. ...

Valve maintenance guides developed for combustion-turbine combined-cycle plants
Rick Roberts, Electric Power Research Institute
Saturday March 1, 2014

Maintenance crews for combustion-turbine combined-cycle (CTCC) plants need new resources to effectively maintain the operational reliability of these plants.

As U.S. utilities curtail operation of older coal-fired plants, CTCC plants are increasingly ...

Monday February 10, 2014
More data, less work, lower costs and a safer workplace
Joe Van Dyke, P.E., Azima DLI
Monday February 10, 2014

The growing adoption of wireless technology for industrial asset condition monitoring is advancing diagnostic power at lower cost. New manufacturing technologies, such as Machine to Machine (M2M) interfaces, rely heavily on remote wireless monitoring ...

Saturday February 1, 2014
ASME: Maximizing power generating asset value through performance management
Komandur Sunder Raj, Power & Energy Systems Services
Saturday February 1, 2014

The power industry has witnessed unprecedented changes in the past few decades. Figure 1 shows the challenges and issues faced by PPOs in maximizing the value ...

Remote monitoring redux
Komandur Sunder Raj, Energy-Tech contributor
Saturday February 1, 2014

This article focuses on the ability to remotely monitor the performance and condition of fossil power plant processes and major equipment. This ability is increasingly becoming important and necessary in the power industry, given the new paradigm ...

Graphitization effects on high temperature ductwork
Austin Meier, Dain Hammerschmidt and Eric Skibbe; Kiewit Power Engineers
Saturday February 1, 2014

North America has an aging fleet of coal plants containing ductwork systems. The ductwork is exposed to harsh conditions associated with plant operations and environmental conditions. These conditions increase the risk of metallurgical deterioration ...

Wednesday January 8, 2014
ASME: Integrated solar combined- cycle plants using solar towers with thermal storage to increase plant performance
By Juergen H. Peterseim, Dr. Amir Tadros, Prof. Udo Hellwig and Prof. Stuart White
Wednesday January 8, 2014

Current global efforts, including the carbon pricing mechanism in Australia, to reduce CO2 emissions aim to incentivize utility and industrial plant operators to build renewable and low-carbon intensity generation assets. With operators ...

The vulnerable plant security system
By Julianne Couch, Energy-Tech contributor
Wednesday January 8, 2014

With miles of fencing and an expansive footprint, power plants do not seem vulnerable to the average observer. But the vulnerability of plant software is of increasing concern to power generation experts, and power plant owners and operators need ...

Lifetime management of boiler external piping
Jim Sutton, Alstom Power
Wednesday January 8, 2014

Fossil fuel-fired boilers and Heat Recovery Steam Generators (HRSGs) utilize three types of piping: boiler proper piping, boiler external piping and non-boiler external piping to move steam and water. Boiler external piping, especially large diameter ...

Tuesday December 17, 2013
New IGTC Forum on gas turbines goes live
Tuesday December 17, 2013

A new forum for gas turbines is online and soliciting questions and discussions about operations and maintenance from power generation plant engineers worldwide. The new forum focuses on engine technology as it applies to all types of gas turbines ...

Monday December 16, 2013
Miss an Energy-Tech webinar?
Don't worry, we saved them for you
Monday December 16, 2013

All of Energy-Tech's technical webinars are available to download here. They're still free, still full of great information in just one hour. ...

Sunday December 1, 2013
Undetected bearing wear leads to catastrophic compressor failure
Patrick J. Smith
Sunday December 1, 2013

Preventing machinery failures requires a good machinery condition monitoring program, a good machinery protection system and good maintenance practices. However, sometimes the signs of progressive damage are very subtle and difficult to detect. In ...

ASME: Corrosion-fatigue prediction methodology for 12 percent Cr steam turbine blades
Ronald Salzman, David Gandy, Neville Rieger, Bernd Schönbauer, Stefanie Tschegg, Shengqi Zhou and Alan Turnbull
Sunday December 1, 2013

Introduction
Many steam turbine blade failures during the past few decades are known to have initiated from corrosion pits. Despite the amount of research that has been undertaken worldwide, no predictive methodology has been ...

Maintenance basis for combustion- turbine combined-cycle plants
Rick Roberts
Sunday December 1, 2013

The Electric Power Research Institute assembled an R&D collaborative to add combustion-turbine combined-cycle (CTCC)-specific information to its Preventive Maintenance Basis Database (PMBD), through new research, to incorporate the maintenance ...

Facts about modern oil mist: Superior lube application
Heinz P. Bloch, P.E.
Sunday December 1, 2013

There are times when industry experts are pleased to see how fast news travels in the modern information age. Reliability professionals can profit greatly from accurate news; and swiftly acting on it might save money and could even avert calamity. ...

Tuesday October 15, 2013
Energy-Tech University – Knowledge you can use
Tuesday October 15, 2013

What are you doing March 25-27, 2014? Want to get some power-gen training under your belt, PDH credits to go with it, all while staying on Chicago’s Magnificent Mile? Come to Energy-Tech University  for three days of ...

Tuesday October 1, 2013
Challenges converting coal-fired boilers to natural gas
Stephen Black, Dave Bielunis
Tuesday October 1, 2013

Owners of existing coal-fired power plants have a very compelling case to consider: the addition of, or conversion to, natural gas firing. Lower natural gas prices and more stringent air emissions regulations, in combination with the ability to burn ...

ASME: A phenomenological analysis of exergy destruction during hydrogen combustion with electronically excited oxygen
DeVon A. Washington and Howard N. Shapiro
Tuesday October 1, 2013

The combustion of fossil fuels will play a significant role worldwide for many years to come. This means more efficient use of fuels continues to be a crucial area of investigation. Due to the complex nature of combustion, the development of hyper-efficient ...

Generator stator end-winding vibration problems
Bill Moore, P.E.
Tuesday October 1, 2013

Background
Generator stator end winding resonance and high levels of end winding vibration are a significant industry issue that affects many generators. This paper will discuss one generator that had issues with end winding ...

Boost your brain BTU with Energy-Tech University
Technical knowledge for power-gen engineers, by power-gen engineers
Andrea Hauser
Tuesday October 1, 2013

One of the best parts of my job is when readers tell me how much they enjoy reading Energy-Tech magazine. That they tear out or e-mail articles to give to colleagues. That they learn something new in every issue. That, “it’s a really good ...

Sunday September 1, 2013
Expansion joint solutions to improve gas turbines and HRSG systems
Paul Schubert and Mike Green
Sunday September 1, 2013

Wherever there is air, fluid or gas movement – be it petrochemical, oil, power generation, paper & pulp or water treatment – peak operation and “up-time” require reliable piping systems and equipment to keep your plant ...

ASME: Orifice flow calculation: Comparison between fluid meter applications
6th Edition 1971, ASME PTC 19.5-2004 AND ISO 5167 2003
A.I.C. Hunter, R.G. Nyquist, S. Coller, J. Smith and H. Boice
Sunday September 1, 2013

Introduction
Orifice flow meters are widely used in flow measurement on account of their simplicity, accuracy and durability. There is a relationship between mass flow through the orifice and the static pressure drop across the ...



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