| Upcoming Training Courses:
Rio Grande, Puerto Rico November 10-11, 2008
Atlanta, Georgia December 10-11, 2008
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| Greetings!
Welcome to the Fall 2008 issue of Jenike & Johanson's Energy e-Newsletter, which focuses on the safety standards and guidelines for reliable flow of coal and other materials in bunkers and silos. |
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Have You Ever Had a Silo or Bunker Fail?
Many silos and bunkers in the energy industry experience some degree of failure each year. In fact, these structures fail with a frequency that is much  higher than almost any other industrial equipment. Sometimes the failure involves complete and catastrophic collapse of the structure. Other failures are not as dramatic or as obvious.
The economic cost of a silo or bunker failure is never small. The owner faces the immediate costs of lost production and repairs, personnel in the vicinity are exposed to significant danger, and the designer and builder face possible litigation because of their liability exposure. Fortunately these failures typically result in only property damage, but not always.
Learn more about what causes a silo or bunker to fail |
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Coal Bunker Assessment Service for Flow Reliability & Structural Safety
 Undetected structural issues and flow problems in solid fuel bunkers, bins and silos can be present that can lead to failures (weld failure, deformation, collapse) and flow stoppages (power interruption, bunker fires, structural damage). Solid fuel includes all forms of combustible materials, such as fossil fuels and biomass.
Jenike & Johanson often is called in to investigate solid fuel flow interruptions and structural failures - after the problem has become obvious. While we, as engineers, understand the problem/solution approach, being proactive and identifying these problems before they cause flow interruptions and structural failures is a far more safe and cost effective approach.
A new assessment service is now available to do just that. Jenike & Johanson will send two engineers to your site for 1 to 1 1/2 days to assess the existing condition of your fuel bunker to detect any material handling and structural issues. The assessment will include a written report outlining the findings and recommended a path forward.
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Meeting NFPA Energy Handling Standards
NFPA (National Fire Protection Association) was organized over 100 years ago to develop a technical document that coordinated the design of fire  protection sprinklers. Today, NFPA facilitates the development of more than 300 codes and standards (building, fire, electrical and life safety) under a consensus code-making process that is accredited by the American National Standards Institute (ANSI). These safety codes and standards influence every building, process, service, design, and installation in the United States, as well as many of those used in other countries. NFPA is a private, nonprofit membership organization. More than 6,000 volunteers serve on NFPA technical committees, writing NFPA codes, standards, and recommended practices. Visit NFPA's web site for more information.
 Of the many standards that apply to plant design and safety, only two are related to storage and flow of coal: NFPA 85 (Boiler and Combustion Systems Hazards Code, 2007 Edition) and NFPA 850, (Recommended Practice for Fire Protection for Electric Generating Plants and High Voltage Direct Current Converter Stations, 2005 Edition. These standards are interconnected with respect to solid fuel storage and handling - NFPA 850 refers to the requirements of NFPA 85.
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Recent Energy Publications
 For more information on the following publications, please contact Jenike's librarian directly via email or telephone at 978-649-3300.
- "Waste Coal: How to Avoid Flow Stoppages During Storage and Handling", Power Engineering, Oct. 2007, Volume 111, No. 10, pp. 42-50, by Roderick J. Hossfeld and Roger A. Barnum
- "Preventing Hangups of Waste Coal During Storage and Handling", presented at Coal-Gen, Milwaukee, WI, Aug. 2, 2007, by Roderick J. Hossfeld and Roger A. Barnum
- "PRB Coal Degradation - Causes and Cures", presented at 7th Annual Electric Power Conference & Exhibition, Powder River Basin (PRB) Coal Users Group Annual Meeting, Chicago, IL, Apr. 6, 2005 by Roderick J. Hossfeld of Jenike & Johanson, Inc. and Rod Hatt of Coal Combustion Inc.
- "Assessing Your Coal Silo for Reliability and Safety", Presented at Power-Gen International, Orlando, FL, Nov. 30, 2004 by Roderick J. Hossfeld
- "What You Need to Know to Reliably Handle Waste Coal", presented at the 17th International Conference on Fluidized Bed Combustion, Jacksonville, FL, May 18-21, 2003 by Roderick J. Hossfeld, D.A. Craig and Roger A. Barnum
- "A lesson Learned From An Explosion: Improving Fuel Handling with PRB Coal by Converting a Bunker from Funnel Flow to Mass Flow", presented at the Electric Power 2003 Conference & Exhibition PRB Coal Users Group Annual Meeting, Houston, TX, March 5, 2003 by R.J. Hossfeld, K. L. McAtee of Quadrant, B. Dantoin of Wisconsin Public Service Corp
- "How to Achieve Reliable Coal Flow and Maintain Plant Availability", presented at Power-Gen International, Orange County Convention Center, Orlando, FL, December 11, 2002 by R. J. Hossfeld, S. Chakraborti of American Electric Power, R. Mesing, K. Steppling of Quadrant
- "Ensuring Reliable Handling of Fly Ash", presented at the Seventh International Science and Technology Conference on Gypsum and Fly Ash 2002, Toronto, Canada, June 2, 3, 4, 2002 by R. J. Hossfeld, M. G. Rulff
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Background of Jenike & Johanson
Jenike & Johanson is a consulting engineering firm specializing in the science and technology of bulk solids handling. In our four laboratories in the United States, Canada, and Chile, we have tested more than 8,000 bulk solids and used the results to design accurate, cost-effective solutions to flow-related problems for more than 3,000 companies around the world in such industries as energy, cement, chemicals, mining, pharmaceuticals, consumer goods, solid waste, and more.
Learn more about Jenike & Johanson's role in the Energy & Power Industry | |
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We look forward to providing you with practical, cost-effective solutions to your bulk solids handling problems.
Sincerely, |
| Rod Hossfeld
Jenike & Johanson, Inc.
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