SY/T 6982-2024 Specification for the installation of air-conditioning and ventilating systemson offshore production installations English, Anglais, Englisch, Inglés, えいご
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ICS
E
Professional standard of the People's Republic of China
SY/T 6982-2024
Specification for the installation of air-conditioning and ventilating systems on offshore production installations
海上生产设施通风空调系统安装规范
(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
Code for Installation of Heating, Ventilation and Air Conditioning Systems on Offshore Production Facilities
1 Scope
This document specifies the installation requirements, anti-corrosion and thermal insulation requirements, monitoring and control system installation requirements, inspection and testing requirements, commissioning and adjustment requirements, and verification methods for heating, ventilation and air conditioning (HVAC) systems on offshore production facilities in the oil and gas industry.
This document applies to the installation of HVAC systems on offshore production facilities in the oil and gas industry.
2 Normative References
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 43321 Recommended brazing process specification for copper and copper alloys
GB 50738 Code for construction of ventilation and air conditioning works
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
air duct
A duct made of metal, non-metal sheets, or other materials, used for air circulation.
3.2
air inlet
An opening through which air is drawn from a space and conveyed into an air distribution system.
3.3
air outlet
An opening through which air is conveyed from an air distribution system into a space.
3.4
air terminal unit
A device that receives, conditions, and conveys air from an air distribution system.
3.5
air leakage rate
The volume of air (m³/h) discharged or infiltrated per unit time through the duct body structure and its connections under a specified static pressure within an air duct system.
3.6
air system permissible leakage rate
The maximum allowable air leakage rate per unit area and per unit time, specified for different classes of air duct systems.
3.7
strength test
An inspection of the pressure-bearing capacity of pipelines, pressure vessels, valves, and accessories under specified pressure and hold time.
3.8
tightness test
An inspection for leakage of pipelines, pressure vessels, valves, and accessories under specified pressure and hold time.
4 Basic Requirements for HVAC System Installation
4.1 General
4.1.1 The arrangement of equipment shall meet safety requirements and facilitate inspection, maintenance, and repair.
4.1.2 All air inlets and outlets shall be located in non-hazardous areas.
4.1.3 Gas detectors should preferably be installed at air inlets.
4.1.4 Outlets and inlets shall be positioned as far apart as possible to avoid cross-contamination of air.
4.1.5 Each fan inlet or outlet shall be fitted with a wire mesh to prevent foreign objects from entering.
4.1.6 Local fan control push-button stations shall be installed on the bulkhead or wall near the equipment, along the escape route, for ease of operation.
4.1.7 For exhaust of gases heavier than air, the exhaust ducting should be arranged at a low level.
4.1.8 For exhaust of gases lighter than air, the exhaust ducting should be arranged as high as possible.
4.1.9 The fire rating of fire dampers shall be equivalent to the fire rating of the bulkhead or deck through which they pass.
4.2 System Design Requirements
4.2.1 Fans
4.2.1.1 Fans shall be installed according to the manufacturer's guidelines.
4.2.1.2 The positioning and arrangement of fans should allow for access for inspection and maintenance.
4.2.1.3 Flexible connections should be installed at the fan inlet or outlet. Flexible connections shall be made of fire-resistant material, arranged along the airflow direction, with a length preferably between 100 mm and 250 mm. For axial fans, stainless steel bellows with no less than three convolutions are preferred.
4.2.2 Air Ducts
4.2.2.1 Indoor air ducts should preferably be made of galvanized steel sheet. Outdoor air ducts should preferably be made of carbon steel sheet or stainless steel sheet. Ducts passing through hazardous areas shall be made of steel plate with welded connections.
4.2.2.2 Unless otherwise specified, standard marine ventilation flanges shall be used.
4.2.2.3 Pipe flanges shall be sealed with fire-resistant materials to prevent leakage.
4.2.3 Penetration Fittings
4.2.3.1 Standard type penetration fittings should preferably be used.
4.2.3.2 The length and thickness of all penetration fittings passing through decks or bulkheads shall comply with the relevant requirements of the "Safety Rules for Fixed Offshore Platforms" and the "Safety Rules for Floating Production Storage and Offloading Units (FPSO)".
4.2.3.3 Penetration fittings passing through fire-resistant bulkheads or walls shall be provided with fire insulation. The insulation requirement shall be equivalent to that of the bulkhead or wall through which the duct passes.
4.2.4 Refrigerant Pipes
