SY/T 10032-2024 General specification for single point mooring system English, Anglais, Englisch, Inglés, えいご
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ICS
E
Professional standard of the People's Republic of China
SY/T 10032-2024
General specification for single point mooring system
单点系泊系统总体规范
(English Translation)
Issue date: 2024-09-24 Implementation date: 2025-03-24
Issued by National Development and Reform Commission, P.R.C
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Abbreviations
5 Design Conditions
5.1 Environmental Conditions
5.2 Design Cases
5.3 Vessel Parameters
6 Design Criteria
6.1 General Requirements
6.2 Design Life
6.3 SPM Location and Spatial Requirements
7 Design Requirements
7.1 Turret System
7.2 Mooring System
7.3 Mooring Foundation
7.4 Dynamic Risers and Umbilicals
8 Construction and Inspection
8.1 General Requirements
8.2 Construction Materials
8.3 Welding
8.4 Quality Control and Inspection
9 Offshore Installation
9.1 General Requirements
9.2 Installation of Mooring Foundation
9.3 Laying of Mooring Lines
9.4 Hook-up of Mooring Lines
General Specification for Single Point Mooring Systems
1 Scope
This document specifies the design conditions, design criteria, design requirements, analysis methods, construction and inspection, and offshore installation technical requirements for single point mooring systems.
This document applies to the design, construction and inspection, and offshore installation of single point mooring systems for floating production units. The design, construction and inspection, and offshore installation of offloading single point mooring systems may refer to this document.
2 Normative References
The following documents contain provisions which, through normative reference in this text, constitute essential provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 3836.1 Explosive atmospheres — Part 1: Equipment — General requirements
GB/T 3836.2 Explosive atmospheres — Part 2: Equipment protection by flameproof enclosures "d"
GB 50019 Code for design of heating, ventilation and air conditioning for industrial buildings
ISO 8501-1 Preparation of steel substrates before application of paints and related products — Visual assessment of surface cleanliness — Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel substrates after overall removal of previous coatings
ISO 10425 Steel wire ropes for the petroleum and natural gas industries — Minimum requirements and terms of acceptance
ISO 20438 Ships and marine technology — Offshore mooring chains
ASME Boiler and pressure vessel code
ASME B31.3 Process piping
ASTM A123 Standard specification for Zinc (hot-dip galvanized) coatings on iron and steel products
ASTM A385 Standard practice for providing high-quality Zinc coatings (hot-dip)
AWS A5.5 Specification for low-alloy steel electrodes for shielded metal arc welding
AWS D1.1 Structural welding code — Steel
NACE MR0175 Petroleum and natural gas industries — Materials for use in H₂S-containing environments in oil and gas production
DNV-RP-B401 Cathodic protection design
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
floating production unit
A floating facility located offshore, providing specific functions and equipped with production capabilities.
3.2
floating production, storage and offloading unit
A floating production unit with functions for oil, gas, and water processing, crude oil storage, and offloading.
3.3
single point mooring system
A device used to position offshore floating production units, also providing functions for fluid, power, and communication transmission.
Note: The single point mooring system allows the moored floating production unit to weathervane 360° freely around it in response to wind, waves, and currents, positioning the moored floating production unit in the orientation where environmental forces are minimized.
3.4
internal turret single point mooring system
A single point mooring system consisting of mooring legs and a turret structure.
Note: The mooring legs are connected respectively to the turret structure and the seabed anchor points.
3.5
soft yoke single point mooring system
A single point mooring system consisting of a mooring tower, swivel stack, soft yoke, mooring legs, and support structure.
Note: The mooring legs are connected to the support structure located at the bow of the FPSO and, together with the FPSO, freely rotate around the mooring tower via bearings on the turntable structure.
3.6
catenary anchor leg mooring system
A single point mooring system consisting of a buoy, mooring legs, and anchors.
3.7
main bearing
A mechanical device that bears the load from the mooring legs and allows the moored floating unit to weathervane around the mooring structure.
3.8
fiber rope
Mooring ropes made from synthetic fibers.
3.9
polyester fiber rope
Mooring ropes made from polyester fibers.
3.10
swivel stack
An assembly of a series of production swivels, electrical swivels, utility swivels, and fiber optic swivels.
Note: The main structure of the swivel stack can rotate freely around a fixed or anchored structure, enabling continuous transmission of fluids, power, and communication signals between the FPSO and fixed platforms or subsea production systems.
4 Abbreviations
The following abbreviations apply to this document.
ASME: American Society of Mechanical Engineers
ASTM: American Society for Testing and Materials
CCTV: Closed Circuit Television
CD: Chart Datum
