The MGT Consulting Network

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 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 Network News:

Dec 2, 2009

Stan Yokell is now a Life Member of the American Society of Mechanical Engineers (ASME) and the American Welding Society (AWS)

Nov 15, 2009

A new post on the MGT Blog at http://syokell.blogspot.com/ discusses hydrostatic testing heat exchangers, with emphasis on testing when leaks are not visible as in fixed tubesheet designs and typical closed feedwater heater construction. It discusses weeping from the channel side to the shell side and points out that the gages customarily used in heat exchanger shops to determine whether there is leakage from the channel to the shell through the tube-to-tubesheet joints by pressure loss are inadequate for indicating weeping. The post on the blog poses questions about the ASME Code’s requirements and suggests cautions that Users, Designers and Manufacturers should take for constructions in which leakage is not visible.

Sep 11, 2009

The State of Iowa has awarded Stanley Yokell the Professional Engineering license to practice Mechanical Engineering.

Aug 6, 2009

Chemical Engineering magazine has accepted for publication at a date to be announced, Stanley Yokell’s article, “Full Length Sleeving Process Heat Exchangers”. The article discusses using sleeving tubes that have different coefficients of thermal expansion than the parent tubes and provides a method of determining it the sleeve metal is acceptable for the operating condition

Apr 30, 2009

MGT Inc., which has made hundreds of presentations in-plant and at public offerings of our courses, “Shell-and-Tube Heat Exchangers – Mechanical Aspects”, Closed Feedwater Heaters – Mechanical Aspects”, “Tubular Exchanger Inspection, Maintenance and Repairs”, “Tube-to-Tubesheet Joints”, and “Power Plant Heat Exchangers”, is no longer presenting these courses. However, these courses are available for sale on CDs with Power Point presentations and complete course notes in PDF format. This are accompanied by DVDs with videos that illustrate the material. Please see http://www.mgt-inc.com/products_services/ for pricing and availability.

Apr 17, 2009

A new Technical Tips on troubleshooting Subcooler problems in closed feedwater heaters has been published on this site. Viewers can also see the text of the new Technical Tips on Stan Yokell’s Professional Blog at http://syokellpefasme.blogspot.com/

Mar 30, 2009

The Power Point presentation of Power Plant Auxiliary Heat Exchangers and Closed Feedwater Heaters – Mechanical Aspects is now available for purchase.

This course has been presented in-plant at a seminar for nuclear plant engineers.

Purchasers will receive a CD with the Power Point presentation and the complete set of course notes in PDF format.

Price: US$390

Payment by Check or Purchase order only. Credit Cards are not accepted.

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

Search MGT News:

MGT-Inc. is not currently offering any of its copyrighted courses. We are in the process of setting up interactive course presentations on the internet.

MGT Inc. for Worldwide Consulting and Training!