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differences between DNV RP E305 and DNV RP F109

differences between DNV RP E305 and DNV RP F109

differences between DNV RP E305 and DNV RP F109

(OP)
Hello you guys, I would like to know what are the differences between the two recommanded practices of DNV : DNV RP E305 and DNV RP F109.
In fact they both have the same name " on-bottom stability design of submarine pipelines" and I remarqued that DNV RP F109 is an update of the DNV RP E305, but I want to know what's the the new that DNV RP F109 has brough, and why do we still use the two versions of this recommanded practice.
Thank you. :)

RE: differences between DNV RP E305 and DNV RP F109

You should read the first sentence of the Introduction: "DNV-RP-F109 will replace the existing offshore design code, DNV-RP-E305 "On-Bottom Stability Design of Submarine Pipelines"."

NB this text was taken from the 2007 version.

RE: differences between DNV RP E305 and DNV RP F109

(OP)
That's right, but some data in the 2007 version are not clear and I think I will need to go back to the 1988 version :/
then the new version does not totally replace the ancien one

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