Clasification Society Rules and Regulations - Rules and Regulations for the Classification of Offshore Units, January 2016 - Part 1 REGULATIONS - Chapter 3 Periodical Survey Regulations - Section 15 Riser systems
Section 15 Riser systems
15.1 Surveys – General
15.1.1 For units having a PRS notation in accordance with Pt 3, Ch 12 Riser Systems, Riser Systems are to be surveyed as per a planned survey schedule agreed between the Owners and LR. This schedule should cover the extent, level and method of systematic examination of critical components of the system.
15.1.2 Extent and frequency of thickness measurements of components and areas where deterioration may be expected due to corrosion are to be included in the above schedule.
15.1.3 An agreed schedule for periodic surveys should be capable of determining condition of riser pipe structure and associated critical components, such as any cladding, bend stiffeners, end connectors, subsea buoyant supporting vessels, subsea valves, anti-corrosive coatings, etc.
15.1.4 This schedule should also include examination and testing of the riser system under working conditions at each Annual Survey.
15.1.5 Emergency shut-down systems with associated communication system, telemetry or instrumentation, pressure relief systems, systems for leak detection and protection against pressure surges are to be tested at each Annual Survey as per agreed procedures.
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