Section 2 Survey
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Offshore Units, July 2022 - Part 3 Functional Unit Types and Special Features - Chapter 10 Positional Mooring Systems - Section 2 Survey

Section 2 Survey

2.1 General requirements

2.1.1 Positional moorings, with or without thruster-assist, are to be inspected and tested during manufacture/construction and under working conditions on completion of the installation.

2.1.2 The scope of inspection and/or testing to be carried out at the manufacturer’s works is to be agreed with Lloyd’s Register (hereinafter referred to as LR) before the work is commenced.

2.1.3 The general requirements for Periodical Surveys, contained in Pt 1, Ch 2 Classification Regulations of the Rules, are to be complied with.

2.1.4 The planned survey program is to be reviewed and where necessary updated between each Survey to the satisfaction of the LR Surveyor. A copy of the planned survey program and updates as agreed with the LR Surveyor, as well as survey records, are to be kept for information.

2.1.5 The inspection and survey records should be used to track and trend the observed degradations or anomalies. A PMS condition track record logbook is to be used to that effect. This is to be updated between each inspection and a copy made available to LR at every Periodical Survey.

2.1.6 Damage, anomalies and modifications to the positional mooring system should be reported to LR. Unless the design ensures the Offshore Unit and its positional mooring system can withstand a line failure with adequate level of safety (i.e. tension, clearance and offsets still satisfying intact criteria even after one line failed and still satisfying the damaged criteria after failure of second line) the unit shall be considered damaged from the time of the failure.


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