0027/nd guidelines for Marine Lifting and Lowering Operations

GUIDELINES
 
FOR
 
MARINE
 
LIFTING
 
&
 
LOWERING
 
OPERATIONS 
0027/ND Rev 11 
 
Page 61 of 84 
17.5.4 
With reference to Section 11.7, the strength of bumpers and guides that are deemed to be “sacrificial” 
may be assessed to the LS2 (environmental load dominated) limit state. The bumper and guide 
connection to the supporting structure shall be assessed to the LS1 limit state. 

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GUIDELINES
 
FOR
 
MARINE
 
LIFTING
 
&
 
LOWERING
 
OPERATIONS 
0027/ND Rev 11 
 
Page 62 of 84 
18 
OPERATIONS AND PRACTICAL CONSIDERATIONS 
18.1 
ORGANISATION, PLANNING AND DOCUMENTATION 
18.1.1 
See Section 6 of 0001/ND, Ref. [1] for information on Organisation, Planning and Documentation. 
18.1.2 
Risk assessments and HAZOP/HAZID studies shall be carried out by the Contractor in the presence of 
the Client, MWS and actual Contractor’s operational personnel. These studies shall be completed at 
an early stage so that the findings can be incorporated into the operational procedures. 
18.1.3 
It shall be ensured that the applicable documentation for all aspects of the lifting operation has been 
accepted by the relevant parties (e.g. Company, MWS and authorities) before any operation 
commences. 
18.1.4 
Design and planning for the overall operation shall, as far as possible, be based on well proven 
principles, techniques, systems and equipment. If new technology is used or new/existing technology 
is used in a new environment, this technology should be qualified and documented. 
18.1.5 
Operating manuals shall be prepared and agreed by all relevant parties in advance and include: 

management and communication systems and routines including organograms and roles and 
responsibilities (see Section 6.2 of 0001/ND, Ref. [1]) 

recording and reporting routines 

relevant drawings, specifications and calculations 

detailed operation schedule and weather window requirements 

required condition of the host structure receiving the lifted object (e.g. live platform, platform 
shut down etc.) and the notification mechanism required to ensure the condition is achieved. 

vessels involved in the operation 

systems and equipment including layout and operational procedures 

test and commissioning plans to be carried out prior to the commencement of the lifting 
operation 

limiting environmental and relative motion criteria including both design criteria and operational 
criteria 

any limitations on the lift off or set down velocity or hoisting / lowering limitations for the crane 
operations 

any other limitations for the operations including tolerances 

requirements for any monitoring during an operation 

operating procedures including arrangements for weather forecasting, control, manoeuvring and 
mooring of barges and/or other craft alongside the crane vessel 

barge ballasting requirements for the lifting operation including any limitations on the draught, 
trim and heel 

detailed step by step procedure for the lifting operation including highlighting any “points of no 
return for the operation” 

contingency procedures and emergency plans (see Section 5.7 of 0001/ND, Ref. [1]) 

other items covered in Sections 5 and 6 of 0001/ND, Ref. [1] 
18.1.6 
Where there are any limitations on any part of the overall operation, these shall be clearly documented. 
18.1.7 
All relevant certificates, test reports, release notes and classification documents for equipment, cranes 
and vessels involved should be included in the operating manual or available for review. 
18.1.8 
Where a single point of failure in the lift system does not cause the loss of the lifted item (see Section 
7.5.2 for design considerations), contingency procedures/plans should, where possible, be in place to 
allow it to be safely recovered. 
11 
11 

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