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Factor of safety for composite pressure vessel

Factor of safety for composite pressure vessel

Factor of safety for composite pressure vessel

(OP)
I am designing a subsea composite pressure vessel (mainly loaded under external pressure). Can somebody provide me information about the factors of safety that need to be applied. I suppose it most be more than 1.5, due to the underwater environment and the unknown influences it can encounter. The purpose of the vessel is to deliver buoyancy in a range between 500 m and 3000 m below sea level.

Thank you in advance, it would be of great help.

RE: Factor of safety for composite pressure vessel


Boeri

A composite shell requires careful design: particularly under external pressure. Shell length betwwen stiffeners is governing factor for resisting pressure - sort of holds the section circular.

In the Uk we use BS4994:87 and the MINIMUM K factor is 8 and frequently in the range 8-14.

Trust this is of help.

Regards

Ed

Ed Clymer
Resinfab & Associates
England

RE: Factor of safety for composite pressure vessel

boeri, You may want to check the ASME Code for RP stamped vessels, Fiber Reinforced Plastic Pressure Vessels, Sec. X.

Hope this helps.
saxon

RE: Factor of safety for composite pressure vessel

(OP)
Thank you for the indication!
Wow, 8-14 seems a lot!!!!
I will surely check out the Codes...
Boeri

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