Section 1 General

101. Application

1. The requirements in this Chapter apply to production and process system installed in the unit with Import, Export or Import/Export notation specified in Ch 2. For the unit with only Import nota- tion(or Export notation), import system(or export system) requirements apply.

2. The boundary of import and export systems is as the following:

(1) The Import System apply to import riser from the import pipe line end manifold(PLEM) to the input flange of the unit.

(2) The Export System apply to export riser from the discharge flanges of the unit to the export

pipe line end manifold.

102. Codes and standards

1. The requirements not specified in this Guidance are to be in accordance with recognized national or international standards.

2. The following standards may be adequately referred as recognized national or international standards.

103. Definition

1. Riser is a subsea rigid or flexible pipe that connects the surface facilities with the sea floor and conveys production fluid.

2. Import pipe line end manifold is the assemblage of pipe, valves and component connecting to the Import Riser and the subsea pipeline or wellhead.

3. Export pipe line end manifold is the assemblage of pipe, valves and component connection be- tween the Export Riser and the product discharge line.

4. Floating hose is a floating conduit used to export hydrocarbons from a point of storage or pro- duction, either an SPM or installation’s manifold to a receiving installation’s manifold for transport.

104. Design considerations

1. The import/export system is to be designed to maintain its integrity under the most unfavorable combination of external loads and internal loads.

2. The dynamic response of the import/export system is to be investigated to the level of detail neces- sary to ensure that interference between the floating production installation and the associated moor- ing system does not affect the integrity of the installation or the import/export system.

3. The riser is to survive the maximum installation offset, as defined in Ch 6, 203.

105. Classification survey during construction

1. The following Plans and data are to be submitted to the Society for review:

(1) Site plan indicating bathymetric features, the location of obstructions to be removed, the location of permanent manmade structures and other important features related to the characteristics of the sea floor

(2) Material specifications for the import/export system

(3) Pipe manufacture, testing and quality control procedures

(4) Flow diagrams indicating temperature and pressure profiles

(5) Specifications and plans for instrumentationf, control systems and safety devices

(6) Specifications and plans for installation, field testing, inspection, anticipated component replace- ment and continued maintenance of the riser system

(7) Environmental and geotechnical report

2. The following surveys are to be carried out during the fitting out of import and export systems.

(1) The installation of the riser clamps on the buoyancy tank and arch support are to be monitored to ensure that the riser is adequately secured and not damaged due to excessive tightening of the clamps.

(2) Upon completion of installation, the entire underwater complement of components is to be gen- erally examined by divers or ROVs.

(3) Hydrostatic test of the import and export system is to be performed in accordance with the pro- cedure specified in API RP 2RD and RP 17B.

(4) It is to be verified that the offloading systems(export systems) for units which are permanently

and exclusively equipped for such units are fitted out as designed. In such

cases, the hose

string bend radii, hose flange gaskets, the positioning of navigational aids, the correct locations of break-away coupling, the tightening of the flange bolts are also verified for compliance with the installation procedures.

(5) All navigational aids are to be functionally tested and proven in working order.