Formats Video

Part 2 – Pressure Thrust

June 3, 2016

Length: 1.00 (Click image to launch video)

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Lugs on Pipe and Vessels *NEW*

November 30, 2015

Load bearing lugs generate local bending stresses on thin walled shells such as pipe or vessels; these stresses can easily be reduced by optimizing the material arrangement. There are several methods for calculating the shell stresses which are covered in publications on the theory of plates and shells. This short video introduces visual concepts on

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Edge Welded Bellows

Edge Welded Bellows *NEW*

September 5, 2014

Edge welded metal bellows provide large movements with very low spring rates in round or rectangular ducting systems. This style is can be designed in short over all lengths. This is a video that is of interest to design and maintenance engineers. Length: 0.57 (Click image to launch video)

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Acid condensate on metal bellows expansion joint

Acid condensate on metal bellows expansion joint

May 26, 2014

High temperature flue gas ducting often has metal bellows expansion joints that are internally insulation. Make sure the bellows remains above 400F to prevent acids from condensating and causing corrosion failures This is a video that is of interest to design and maintenance engineers. Length: 1.33 (Click image to launch video)

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Steam Turbine Cross Over Expansion Joint

Power Plant How a steam turbine cross over expansion joint works

January 13, 2018
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Steam Turbine Cross Over Expansion Joint

Power Plant How a steam turbine cross over expansion joint works

September 4, 2015

The cross over expansion joint located in the piping between the steam turbine and condenser hood is often not understood well and often ignored. This animated video gives a rare glimpse into how this expansion joint protects the steam turbine. To avoid long unscheduled outages, Steam turbine manufacturers recommend having these rebuilt after 25 years

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Steam Extraction Expansion Joints

Power Plant Steam Extraction Expansion Joints

October 31, 2014

The expansion joints down in the LP turbine are rarely inspected due to limited access to the covered metal bellows. Inspection and replacement recommendations are discussed. This is a video that is of interest to maintenance, steam and turbine engineers, and inspectors. Steam Extraction Expansion Joints The expansion joints down in the LP turbine are

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Power Plant Coal Pulverizer Ducting Expansion Joints

January 13, 2018
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Steam Turbine Cross Over Expansion Joint

Power Plant Steam Turbine Cross Over Expansion Joint

October 31, 2014

When a steam turbine is upgraded to operate at a higher pressure the expansion joints need a new stress analysis along with a hydro-test. This is a video that is of interest to maintenance and turbine engineers, and plant managers. Steam Turbine Cross Over Expansion Joint When a steam turbine is upgraded to operate at

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2-Ply Testable Bellows For Steam Turbines

Power Plant 2-Ply Testable Bellows For Steam Turbines

January 13, 2018
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2-Ply Testable Bellows For Steam Turbines

Power Plant 2-Ply Testable Bellows For Steam Turbines

October 31, 2014

Most power plants have steam turbine cross-over expansion joints with 2-ply testable bellows. These redundant bellows are often overlooked during the piping system inspection. A demonstration is provided with a recommended test fixture for safe and easy testing between the bellows plies. This is a video that is of interest to maintenance and turbine engineers,

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Round Corner Metal Rectangular Expansion Joint (New)

Round Corner Metal Rectangular Expansion Joint (New)

December 18, 2014

Metal rectangular expansion joints with round corners and U-profiles significantly out-perform any other corner style, as demonstrated by this video. The more flexible a bellows, the higher its fatigue life. This video is of interest to design and maintenance engineers. This is a video that is of interest to design and maintenance engineers. Length: 0.57

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Metal Rectangular Expansion Joints

Metal Rectangular Expansion Joints

August 1, 2014

Are all metal rectangular expansion joints created equal? Not even close. Many after-market metal rectangles are made with a V-profile with a miter weld at the corners – these are flawed design features. The longest lasting designs have a U-profile with round corners. This is a video that is of interest to design and maintenance

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Camera Corner Bellows

Camera Corner Bellows

September 5, 2014

Camera corner metal rectangular expansion joints have proven to be problematic for end users. The design requires considerable amounts of welding in the corners which are a stress riser during deflection. In addition the tight pitch of the profile more easily traps debris. This is a video that is of interest to design, piping, vessel

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Inspecting Metal Bellows Damage

Inspecting Metal Bellows Damage

August 1, 2014

A metal bellows can be easily damaged if installers are not careful. The dents, arc strikes, and scratches are not always a cause for immediate panic. This is a video that is of interest to maintenance engineers, inspectors, pipefitters, and contractors. Length: 3:37

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Expansion Joint Liners

Expansion Joint Liners

August 1, 2014
Metal bellows expansion joints that have high internal flow need to be protected by an internal liner. The effects of high flow on an expansion joint are discussed. This is a video that is of interest to maintenance engineers and inspectors Length: 2:33 Read More
Why An Expansion Joint Works Part One

Why An Expansion Joint Works Part One

August 1, 2014

How does a thin bellows hold the same pressure as that of a thicker pipe? The hoop stress pressure of a pipe is derived and then a comparison is made to how it is calculated for a metal bellows. This is the basis for the equation found in both the ASME code and the EJMA

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Why An Expansion Joint Works Part Two

Why An Expansion Joint Works Part Two

August 1, 2014
How does a metal bellows flex? The theory of bellows deflections are discussed along with the EJMA (expansion joint manufacturers association) fatigue curves. A brief review is given as to how the EJMA fatigue curves were developed. A comparison is made between the deflection of a metal bellows verses that of a pipe loop for Read More
Metal Expansion Joint Installation

Metal Expansion Joint Installation

August 1, 2014
Guidelines are given for the correct installation steps for metal expansion joints. This is a video that is of interest to pipe fitters and maintenance engineers. Length: 5:21 Read More
EJMA verses ASME

EJMA verses ASME

August 1, 2014

The EJMA design guide and the ASME code have different design criteria for metal bellows cycle life. The history of the ASME B31.3, Section VIII, and EJMA fatigue curves are discussed along with practical recommendations for expansion joint cycle life specifications. This is a video that is of interest to design, piping, and vessel engineers.

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Van Stone Flanges

Van Stone Flanges

August 1, 2014
Van stone flanges enable ease of installation and provide a corrosion barrier between the media and the flange. This is a video that is of interest to design and maintenance engineers, pipefitters, and contractors. Length: 2.29 Read More
Steam Extraction Expansion Joints

Steam Extraction Expansion Joints

August 1, 2014
The expansion joints down in the LP turbine are rarely inspected due to limited access to the covered metal bellows. Inspection and replacement recommendations are discussed. This is a video that is of interest to maintenance, steam and turbine engineers, and inspectors. Length: 7:16 Read More
Do You Need An EJMA Manual

Do You Need An EJMA Manual

August 1, 2014
An overview of the EJMA manual contents is given along with tips and recommendations for those seeking expansion joint information. This is a video that is of interest to design, piping, vessel and maintenance engineers along with buyers, pipefitters, and contractors. Length: 3:20   Read More