Draf Text for the NWIP 13628-12- Dynamic production risers ...

Ac pipe cross-section area Ai internal cross-section area of the pipe Ao external cross-section area of the pipe giving buoyancy if submerged Ab,r bolt stress area Ab,s bolt stress cross-sectional area A5 elongation after rupture in % for tensile test piece with gauge length, (A5 (L0=5,65√ S0 or 5d) a crack depth for surface flaws or half ... ................
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