Page 492 - Pipelines and Risers

Pipe-in-Pipe and Bundle Systems 459

r----l
DESIQN
BASIS

SIZE (ID)

4 ESTABLIHED FLOWLINE I
SIZE (WT)

NOT OK
b CHECK HOOP STRESS

MATERIAL 8 THICKNESS

-1
INSULATION SYSTEM

ESTABLISH MINIMUM
CARRIER SIZE (ID)

DETERMINE BUOYANCY
REQUIREMENTS

SELECT SUITABLE
CARRIER SIZE
(OD
X
WT)
DETERMINE SUBMERQED
INSTALLED WEIGHT

NOT OK
STRESSES

BUNDLE
r--j--i OPTION
Figure 24.2 Design flow diagram for bundle system.
The submerged weight of the bundle is compared with the minimum submerged weight of the
bundle required to satisfy Morison’s classical two dimensional theory. The cyclic varying
horizontal velocity in the water particles introduced by the design wave are superimposed on