Section 5 General and structural, plans and data

5.1.1 Sufficient plans and data are to be submitted to enable the design to be assessed and approved. The plans are also to be suitable for use during construction, installation, hydrotesting, survey and maintenance of the pipeline.

5.1.2 Plans are generally to be submitted in triplicate, but only one copy of calculations, supporting data and specifications will be required.

5.2.1 Adequate design specifications, appropriate in detail to the approval required, are to be submitted for information of the Surveyors.

5.2.2 Specifications for the design and construction and fabrication of the pipeline, structure and associated equipment are to be submitted. Included in these shall be materials, grades/standards, consumables, construction and installation procedures and modes of operation with applicable design criteria. These specifications are to include choice of design codes.

5.2.3 Specification and documentation are to be submitted covering all instrumentation and monitoring systems proposed to cover the fabrication, installation and operating phases of pipeline, risers, fittings and equipment.

5.3.1 Plans and data covering the following items are to be submitted for approval, as relevant:

• Route survey showing name, latitude and longitude of terminal locations, booster stations, location of spur line tie-ins, location of isolating valves, location of platforms (en-route) or other fabrications, shipping channels, presence of cables, pipelines and wellheads etc.
• Layout of risers and associated platform arrangements, including protection of risers.
• Pipeline dimensions and material grades.
• Riser dimensions, material grades and support details.
• Pipe wall thickness tolerances (pipeline and risers).
• Type and thickness of corrosion coating (pipeline and risers).
• Weight coating thickness, material and density.
• Weight coating reinforcement.
• Sizes and details of J-tubes, expansion loops, lateral or spur lines, crossings, reducers, etc.
• Details of sea bed.
• Location and configuration of burial, including rock dump if specified.
• Corrosion protection system.
• Cathodic protection system.
• Details of all attachments to pipeline and riser.
• Type and details of all pig traps, valves and control equipment etc.
• Welding specification, details and procedures.
• Construction and laying procedures.
• Quality control and N.D.E. procedures.
• Instrumentation and communication line diagrams for pipeline flowpath.
• Trenching and backfilling details.
• Crossing designs.
• Leak detection system and hardware.
• Emergency shutdown system and other safety devices, including pressure transient (surge) relief.
• Details of pipeline system control and communications.
• Test schedules for communication systems, controls, emergency shutdown systems and other safety devices, which are to include the methods of testing and test facilities provided.

5.3.2 The following supporting plans and documents are to be submitted:

• Reference drawings and listing of standard components, e.g. tees, reducers, connectors, valves, elbows, etc.
• Reference drawings of anodes, sleeves, buckle arrestors, etc.

5.4.1 The following is to be submitted where relevant to the pipeline system:

• Fluid to be conveyed. (The maximum partial pressure and dew point of H₂S, CO₂ and H₂O for gas pipelines.)
• Product density.
• Design pressure and temperature.
• Maximum operating pressure.
• Test pressure to be applied (pipeline, risers and pig traps).
• Corrosive nature of line contents.
• Maximum and minimum operating temperatures including distributions along the line.
• Design throughput.
• Design cathodic protection potential.
• Leak detection accuracy and response.
• Negative buoyancy and stability data for all pipelines.
• Corrosive nature of sea water and seabed soils.
• Maximum and minimum temperatures of water and air.
• Ice conditions which may affect riser or pipeline.
• Seabed topography and bathymetry for whole pipeline route and any possible deviation or future development.
• Seismic activity survey.
• Seabed geology and soil characteristics including stability and sand waves etc.
• Wind velocities and directions.
• Wave heights, periods and directions.
• Current, tidal current and storm surge velocities and directions.
• Type, activity and magnitude of marine growth predicted.
• Calculations and documentation of all design loads covering: manufacture, installation and operation.
• Analyses of riser/pipeline behaviour including: buckling, vortex shedding, on-bottom stability, displacements, vibration, fatigue and fracture propagation.

5.5.1 A manual of operating instructions is to be prepared. It is the responsibility of the Owner to provide in the manual all the necessary instructions and limits on operation to ensure that the operating conditions on which classification is based will not be exceeded in service.

5.5.2 Where a National Authority has a specific requirement regarding the contents of the Operations Manual, it is the responsibility of the Owner to comply with such Regulations.

5.5.3 The Operations Manual is to be forwarded for information when the plans are being approved by LR.

5.6.1 Full operational data, including calculations must be submitted for approval prior to upgrading the pipeline operation.