MGT Inc.

The MGT Consulting Network


The MGT Consulting Network is a group of well-known experts in fields related to shell-and-tube heat exchangers and closed feedwater heaters.

Click here, to learn more about us.


Areas of Expertise
  • Assistance with Preparing and Executing Procurement Specifications
  • Mechanical Design and Troubleshooting
  • Mechanical Problems
  • Metallurgy, Corrosion Problems and Water Treatment
  • New and Replacement Feedwater Heater Procurement Specifications
  • New and Replacement Process Heat Exchanger Procurement Specifications
  • Performance Testing
  • Pressure Vessel Codes
  • Survey and Evaluation of Heat Exchanger Construction and Repair Shops
  • The National Board and API Inspection Codes
  • Thermal Design, Rating and Troubleshooting Thermal Problems
  • Troubleshooting Thermal/Mechanical Problems
  • Tube Plugging, Sleeving and Ferruling
  • Tube-to-Tubesheet Joining
  • Vibration Analysis


In addition to their own expertise, network members have their own networks of other consultants with expert knowledge in fields such as stress analysis, finite element analysis, and nondestructive testing.


Additional Information and Resources:

Information about Plugs and Ferrules

Download Effects of Sleeving Closed Feedwater (PDF, 931KB)


Click Here
,
for all errata found to date in "Tubular Heat Exchanger Inspection, Maintenance and Repair", Carl F. Andreone and Stanley Yokell, McGraw-Hill, New York, 1997.

Download Excel Spreadsheets for Feedwater Heater Sleeving Calculations discussed in the April 2004 issue of Power Magazine

Pressure drop calculation with full length sleeves
Pressure drop calculation with short sleeves
Thermal effects of sleeving feedwater heaters

Download Excel Spreadsheets for Calculating Percent Wall Reduction for Expanded Tube Joints

Percent wall reduction calculations

Download Excel Spreadsheet for Calculating Bypass flow and hole size in pass partition for bypassing feedwater flow by means of a hole in the pass partition to be used when the number of plugged tubes causes feedwater pressure drop to reach or exceed the established limit.

The calculation used in the spreadsheet below was derived by Stanley Yokell during the writing of ”Tubular Heat Exchanger Inspection, Maintenance and Repair”, by Carl F. Andreone and Stanley Yokell, McGraw-Hill, New York, 1997.

MGT wishes gratefully to acknowledge the work and suggestions of Linda Riley of Kansas City Power and Light Company (Great Plains Energy) that made the presentation clearer and more understandable.

Flow bypass and hole sizing calculations

Note: The above downloads require a recent version of MS Excel software on your PC.

 

Access the MGT Network:


MGT Technical Tips:

MGT Network News:

Apr 25, 2008

On May 5th, 2008 MGT Inc. will be relocating. Our new address will be: Unit F201, The Academy, 970 Aurora Avenue, Boulder, CO 80302. The moving process will take a few days and we will not occupy our new premises until May 8th. During the move of our telephones, please call on my cellphone, 303 817 1721 if you cannot contact us at the usual number. Our fax phone number will be inactivated from May 5th to May 8th. During the interim we will have access to email.

Our telephone, fax and email numbers will remain unchanged


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Mar 27, 2008

Chemical Engineering Magazine has published Stanley Yokell’s article, “Maintaining and Repairing Heat Exchanger Tubes” in the March 2008 issue. Details of what is in the article are available on his professional blog at http://syokellpefasme.blogspot.com/.


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Oct 9, 2007

ASME has provided a limited number of reprints of Stanley Yokell’s paper, “Hybrid Expanding Revisited”, published in the August issue of the Transactions of the ASME. We will provide these reprints on a first come, first served basis.


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May 21, 2007

We note with pleasure, Walter J. Sperko’s recent election to Fellow Grade of the ASME. Congratulations to Walter.

Stanley Yokell’s Technical Brief, “Note on Feedwater Heater tube Joints” has been published in the May 2007 Special Issue Developed by the PVP Design and Analysis Committee of the Journal of Pressure Vessel Technology part of the Transactions of the ASME.

Stanley Yokell’s Paper, “Hybrid Expanding Revisited” has been rescheduled for publication in the November 2007 Issue of the Journal of Pressure Vessel Technology.


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Jan 12, 2007

Chemical Engineering has published Stanley Yokell’s article, “Tube-to-Tubesheet Joint Tightness” in the March 2007 issue.


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Jan 26, 2006

We’ve added 2 new downloadable Excel spreadsheets:

Percent wall reduction calculations

Flow bypass and hole sizing calculations

These links are permanently available on the left side, near the top of the MGT homepage. The Flow Bypass spreadsheet was updated on 3/10/06.


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Older MGT news items can be found in the Blog Archives.

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Current Schedule of Training Courses:

Seminars and Conferences Group International sponsors the public offerings of the courses that MGT offers. Visitors to this site should check from time to time for information about future offerings. For information about in-plant and public offerings contact Lorraine Castiglia at Seminars & Conferences Group, 400 Bridge Plaza Drive, Englishtown, NJ 07726-1735, Telephone 732-617-8246, E-mail Lorrainec@semconfs.com


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