GUIDELINES
FOR
MARINE
LIFTING
&
LOWERING
OPERATIONS
0027/ND Rev 11
Page 20 of 84
4.5
SURVEYS
4.5.1
Where GL Noble Denton approval for lifting operations is required, the surveys shown in
Table 4-1 will
usually be needed:
Table 4-1
Typically Required Surveys
Survey
Time
Place
Sighting of inspection / test certificates or
release notes for spreader bars,
lift points and
attachments
Before departure of
structure from shore
and
before offshore lift
(if after a lifted load-out)
GL Noble Denton /
client's office and / or
fabrication yard
Sighting of certificates and inspection reports for
slings and shackles. Inspection of rigging and
laydown and rigging tie-down / seafastening
Witness or review relevant reports
for testing of
any items required for installation activities (e.g.
rotational tests on spreader bars for jacket
upending, testing of diaphragms required for
water
tight compartments, etc.)
Fabrication yard or
subcontractor’s
facility
Inspection of securing of loose items inside
module
Inspection of Survey & Positioning equipment on
structure and on seabed
Before
departure and
start of marine
operations
Fabrication yard and
lift site
Suitability survey of crane / installation vessel, if
required
Before
start of marine
operations
As available
Crane / installation vessel mooring activities
At lift site
Crane / installation vessel in field DP trials
Inspection of preparations for lift
and issue of
Certificate of Approval
Immediately before
cutting seafastening
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