3D Laser Scanning & Pipe Spool Drawings

01Deliverables

1. Registered 3D point cloud data.
2. As-built pipe spool fabrication drawings in PDF format.

02Detailed scope of work

1. 3D laser scanning and point cloud processing

1. Carry out 3D laser scanning of the designated pipeline located on the vessel’s main deck.
2. Onboard scanning duration: 1 day (8–10 hours of scanning).
3. Perform post-processing and registration of the captured scan data.
4. Deliver the registered point cloud data for engineering use.

2. Pipe spool drawing preparation

1. Prepare detailed pipe spool drawings based on the actual dimensions captured from the 3D laser scan.
2. Drawings will include the necessary dimensional information required for fabrication.
3. Pipelines: 6-inch and 4-inch. The total combined pipeline length considered under this quotation is approximately 180 m.

03Exclusions

The following are excluded unless specifically stated otherwise:

1. Pipe support design, modification and structural calculations.
2. Pipe stress analysis and hydraulic calculations.
3. Material identification, wall thickness verification and corrosion assessment.
4. Verification of the original piping design and specifications.
5. Class approval, submission and certification.
6. Pipe fabrication, installation and onboard modification.
7. NDT, pressure testing and other inspection activities.
8. Insulation removal and reinstatement.
9. Scaffolding, access arrangements and temporary platforms.
10. Additional scanning attendance resulting from restricted access or changes in scope.
11. Any pipeline modifications outside the designated 6-inch and 4-inch pipelines.

04Project duration

The project is estimated to require up to 1 day on site for data acquisition and approximately 3 days for scan registration and data processing.

Engineering and drawing duration: approximately 20–30 calendar days from completion of scan registration and receipt of all necessary client information, subject to pipeline complexity and client clarification requirements.

05Scanning conditions

Scanning coverage

Scanning shall be limited to areas that are accessible and safe at the time of execution. Any restricted, inaccessible or unsafe areas will be excluded from the scope.

High-temperature environment

For high-temperature environments, scanning shall be carried out in black-and-white mode to prevent equipment overheating and ensure optimal data capture quality under such conditions.

Movement restrictions during scanning

During the scanning process, movement in the vicinity of the scanning area should be minimized or avoided wherever possible to prevent the capture of moving objects, which may adversely affect the accuracy and quality of the scan data.

06Scanning preparation on board

The Client shall ensure that the complete pipeline route is accessible and visible during scanning. Any insulation, temporary obstruction, cargo, equipment, scaffolding or other obstruction preventing adequate scanning coverage may result in incomplete data and may require an additional attendance at extra cost.

07Overseas mobilisation and travel expenses

1. International travel and accommodation: All international travel expenses, including return airfare from Singapore, accommodation, meals, visa fees, travel insurance and other necessary travel-related expenses, shall be borne by the Client. Such expenses shall be arranged directly by the Client or reimbursed to Oshiana Pte. Ltd. at actual cost. Where travel arrangements are made by Oshiana, an additional 8% administrative charge shall apply to the expenses incurred.
2. Local transportation: All local transportation expenses, including airport transfers, hotel-to-port transportation, port transfers and other transportation necessary for the execution of the project, shall be borne by the Client.
3. Port agent and boarding arrangements: The Client shall arrange and bear all costs associated with port agents, vessel boarding permissions, port entry passes, security clearances, launch boat transfers and any other arrangements necessary for personnel and equipment to access the vessel.
4. Equipment transportation and customs clearance: The Client shall be responsible for all costs associated with the international transportation, customs clearance, temporary import/export permits, local handling and return shipment of scanning equipment and accessories.

08Travelling and standby charges

Travelling and standby charges shall apply at SGD 600 per day per engineer, unless otherwise agreed in writing.

Chargeable periods include:

1. International travelling days, including departure from and return to Singapore.
2. Waiting time caused by vessel delays, changes in ETA or changes in boarding schedules.
3. Delays caused by adverse weather, port restrictions or unavailability of the vessel.
4. Delays arising from customs clearance, immigration or access restrictions.
5. Additional waiting periods caused by the Client’s operational requirements.

09Cancellation and postponement

Any cancellation or postponement after confirmation of the Purchase Order shall be subject to reimbursement of all non-refundable expenses and costs already incurred by Oshiana. If cancellation occurs after mobilisation has commenced, the Client shall be responsible for all applicable travelling, standby, mobilisation and completed service charges. Any additional mobilisation required due to postponement shall be charged separately.

10Piping material and fabrication specifications

The Client/Shipowner shall provide and confirm all necessary piping specifications, including pipe material grade, pipe wall thickness (schedule), flange standards and pressure ratings, and other relevant fabrication requirements.

3D laser scanning is limited to capturing the visible external geometry and dimensions of the existing pipelines and does not determine or verify material specifications, pipe wall thickness or flange standards.

The as-built pipe spool fabrication drawings shall be prepared based on the scan data and the piping specifications provided by the Client/Shipowner.

11Pipe spool length

Spool break locations will be determined based on the actual dimensions obtained from the 3D scan unless specific fabrication, transportation, installation or maximum spool size requirements are provided by the Client.