I need EJMA Standard 10th Edition? Can anyone share? Petroleum Community Forum -Free Discussion and Education Community. Help. EJMA BOOK OF STANDARDS: Standards of the Expansion Joint Manufacturers Association, Inc. – Includes one copy of Practical Guide to Expansion Joints. The EJMA Standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type.

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We have the technical expertise to assist customers for the most common applications and the tools in place to aid with selection.

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In addition to utilizing this lab to further our own stadnard of expansion joints, it can be utilized for customer specific expansion joint testing. The Tenth Edition standards combine the knowledge and experience of the leading manufacturers of expansion joints into an invaluable reference document. Reliability Improvement 29 post s. Tom Vowell on Wednesday, 16 October This would result in a margin of safety entirely dependent upon the ejja, and could vary from large, to none.

Chuck Becht on Wednesday, 16 October There is ongoing work to potentially revise the EJMA fatigue curve to include a factor of safety, which may be variable. Per Ejma I need the allowable at design to check the calculated stresses.


The Difference Between ASME B31.3 Appendix X and EJMA Fatigue Curves for Bellows?

The software utilized for solid modeling and FEA work in conjunction with each other to allow the shortest possible time from concept model to production drawing generation. Guest – Tom Vowell on Sunday, 20 October A new E-book version of the new 10th Edition Standards can be downloaded to your PC, laptop freee tablet.

Definitions in the Nomenclature section 1. Piping 29 post s.

Ejma standard free download – Google Docs

The distinction of thin versus thick bellows has been added. Why was the EJMA stresses higher? EJMA does not mention this. Available Positions Apply On-line. The minimum control requirement of the bellow tube has to be X-ray or DPI prior to forming.

AND it does not explain why his allowables don’t jive. Fitness for Service 9 post s. Tightness of bellows, bands, and rings due to dissimilar material growth rates stadnard considered. Was he fudging the first time? Is this a standard requirement for all types of application of expansion joints, or can this be a demand of a customer.


This would be a very good development as it will lead to more uniform design practices and less confusion. Systems 2 post s. High Frequency Fatigue with Thermal Exposure.

Machinery 19 post s. Historically, designers have put large factors of safety on the number of design cycles for bellows, which was in part justified since there was no design margin in the EJMA fatigue curve. Subscribe to this blog post Unsubscribe. Some common tests include the following:.

It will also assist the user in communicating design requirements to the manufacturers and to properly install and maintain the expansion joint in service. Friday, 26 July The Sa he gave me, for 70F and F were and respectfully. Heavy Lift 14 post s.

The Authority on Expansion Joints The EJMA Standards are recognized throughout the world as the authority on the proper selection and application of metallic bellows type expansion joints for safe and reliable piping and vessel installation. Pressure Vessels 18 post s. Guest – Alexander on Monday, 25 August