Elastic bend radius

[bodebobo]

goodday,

i will like to know how to calculate Elastic bend raius allowable of a pipeline.

i will be gratefull if anybody can help me.

thanks

 

[BigInch]

http://emweb.unl.edu/NEGAHBAN/Em325/11-Bending/Bending.htm

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"Pumping accounts for 20% of the world’s energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic (Note: Make that 99.99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[Apakrat]

Don't know if it still fits to modern pipeline codes, but, rule of thumb back in my pipeline days some 40 years ago, was:

1.5 degree bend per pipe diameter inch​

Translation of this is, a bend of no more than 1.5 degrees could be made every 30 inches of a 30 inch diameter pipe.

The rule applied to all sizes of pipes and the use of the size shown with translation is for application purpose.

Additionally, rule of thumb stated:

No bending allowed within 2.5 diameter inches from the end of a pipe​

This means no bending is allowed within 48 inches of the end of a 24 inch diameter pipe.


At 74th year working on IR-One PhD from UHK - - -