SPAR MOORING

Mooring Design

Procedure

for spars

1. Define customer requirements

Define the spar to be moored, the type of service required, the maximum allowable spar motions, and situations under which the spar will work.

2. Determine planning requirements

Determine permit requirements, establish how the mooring is to be used, review the budget and schedule.

3. Define environmental parameters

Determine the water depth, engineering soil parameters, design winds, design currents, design waves, design water levels, and evaluate access.

4. Spar characteristics

Find the characteristics of the spar including drafts, air gap, displacements, allowable hull pressures, and other parameters.

5. Spar forces/moments

Determine the forces, moments, and other key behaviors of the spar.

6. Evaluate mooring alternatives

Evaluate the alternatives in terms of safety, risk, cost, constructability, availability of hardware, impact on the site,  compatibility, maintenance, inspectability, and other important aspects.

7. Design Calculations

Perform static and/or dynamic analyses (if required) for mooring performance, anchor design, line design, etc.

8. Installation

Prepare instructions for installation, including safety and environmental protection plans and perform engineering monitoring of the installation process.

9. Testing

Perform pull tests of all anchors in mooring facilities to ensure that they hold the required load.

10.Inspection & Maintenance

Perform periodic inspection/testing of the mooring to assure it continues to meet the  requirements.

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