GUIDELINES
FOR
MARINE
LIFTING
&
LOWERING
OPERATIONS
0027/ND Rev 11
Page 69 of 84
19
INSTALLATION OF SUBSEA EQUIPMENT
19.1
SCOPE
19.1.1
This section of the guidelines are specifically related to the installation of the following items subsea:
Manifolds, Protection Structures, Templates and Production Equipment, including:
o
Xmas trees
o
Choke systems
o
BOPs
o
Subsea production equipment (multiphase pumps, separators, compressors, etc.)
o
Control modules
o
Guide posts
o
Intervention tooling.
o
Ancillary equipment e.g. concrete mattresses, PLETs, PLEMs (when not installed as part
of pipelay operations).
Anchor piles (see Section 19.8 for suction and Section 19.9 for driven piles)
Jumpers and tie-in spools (see Section 19.10)
Rigid Pipe Risers (see Section 19.11)
Storage Tanks (see Section 19.12)
Tidal & wave generators
19.1.2
The installation of:
Pipelines, flowlines and risers from a laying vessel, and
PLETs & PLEMs when being installed as part of the pipeline/ pipe string
is covered by 0029/ND, Guidelines for Submarine Pipeline Installation, Ref. [4]. However, in some
instances, the installation of a PLET at the initiation or termination of the pipelay will be covered by
both guidelines; for example a PLET connected to line pipe but lowered by crane and winch with a
damping system using buoys.
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