SY/T 4094-1995 Technical specification for the design and construction of shallow-water steel fixed platform structures
Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY
SYT4094-95
Technical specification for structure designing and con-structing for fixed steel-platforms in shallow-sea1995-12-18 Issued
China National Petroleum Corporation
1996-06-01 Implementation
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY
SYT4094-95
Technical specification for structure designing and constructing for fixed steel-platforms in shallow-sea1995-12-18 Issued
China National Petroleum Corporation
1996-06-01 Implementation
Technical specification for structure designing and constructing for fixed steel-platforms in shallow-seaSY/ T 409495
Editor: Shengli Petroleum Administration Bureau Oil Construction No. 1 Company Shengli Petroleum Administration Bureau Survey and Design Institute Approval Department: China National Petroleum Corporation Petroleum Industry Press
1997 Beijing
Design conditions
2.1 General provisions
2.2 Environmental conditions and loads
3 Structural analysis
General provisions
Static analysis
Dynamic analysis
Fatigue strength analysis
Superstructure analysis·
Steel structure
General provisions
Classification of structural components
Allowable stress
Strength of components|| tt||Stability of components
Deformation and vibration
Construction requirements
Corrosion allowance
General provisions
Site investigation
Pile design
Specialized design
(10)
(12)
(13)
5.4 Calculation of pile foundation under lateral load
5.5 Axial bearing capacity of pile
6 Materials
Steel for platform structure
6.2 Selection of steel for platform structure
7 General provisions for corrosion protection||tt ||Welded steel pipes for platform structures
Manufacturing deviations
General provisions
Launching and positioning of jackets
Installation of superstructures
General provisions
Welding materials
Approval of welding procedures
Grounding of welding equipment
Fan Guo and inspectors
Mechanical property test
Manufacturing inspection:
Welding inspection
Shipment, fixing and transportation inspection
(39)
(45)
(48)
(49)
(49)
(69)
(83)||tt ||(85）
11.6 Installation inspection
n. Inspection documents
Appendix A Explanation of terms used in this specification
Additional notes
(97）
Documents of China National Petroleum Corporation
(95) CNPC Technical Supervision No. 731
Notice on the approval and release of 26 oil and gas industry standards including "Standard for Investigation Methods of Corrosion and Protection of Steel Pipelines and Storage Tanks"
To all relevant units
The 26 oil and gas industry standards (draft) including "Standard for Investigation Methods of Corrosion and Protection of Steel Pipelines and Storage Tanks" have been reviewed and approved and are now approved as oil and gas industry standards for release. The numbers and names of each standard are as follows: 1
SY/ F 0087-95
SY/ T 0545--1995
SY/ T 4013- 95
SY T 4041-95
SY/ T 4084--95
SY / T 4085-95
Standard for investigation methods of corrosion and protection of steel pipelines and storage tanks
Determination of thermal characteristic parameters of wax precipitation in crude oil
Scanning calorimetry
Technical standard for polyethylene anticorrosion layer of buried steel pipelines (replaces SYJ4013--87)
Specification for installation and acceptance of wet steam generators for oil fields (replaces SYJ4041--89)
Technical specification for environmental conditions and loads in coastal areas
Technical specification for oil and gas gathering and transportation in coastal oil fields
$Y/T 4086-95
SYT 408795
SY/T 4088—95
SY/T 408995
SY7 T 4090--95
SY / T 4091-95
SY7T 409295
SY/ T 4093-95
SY/ T 4094--95
SY T 4095--95
SY/T 4096--95
SY/T 4097-95
SY7T 4098-95
SY T 4099--95
SY7 T 4100-95
SY/T 410195
SY7 T 4102---95wwW.bzxz.Net
SY7T 41031995
SY 410495
SYT 0088--95
Technical specification for design and construction of pipeline network on beach and sea structures
Technical specification for ventilation and air conditioning of beach and sea petroleum projects Technical specification for water supply and drainage of Weihai petroleum projects Technical specification for electrical engineering of beach and sea petroleum projects
Technical specification for power generation facilities of beach and sea petroleum projects Technical specification for corrosion protection of beach and sea petroleum projects
Technical specification for thermal insulation of beach and sea petroleum projects
Technical specification for selection and installation of cranes on beach and sea petroleum facilities
Technical specification for design and construction of shallow-water fixed steel platform structures
Technical specification for design and construction of shallow-water mobile steel platform structures
Weihai oilfield wellhead protection Technical specifications for protective devices Technical specifications for the design and construction of beach slope type sand and gravel artificial island structures
Technical specifications for the design and construction of beach ring wall steel formwork-concrete artificial island structures
Technical specifications for the design and construction of beach seawalls
Technical specifications for beach engineering measurement
Technical specifications for geotechnical engineering investigation in Weihai
Specifications for the inspection and installation of valves
Welding and acceptance of steel pipelines
Quality inspection and assessment standards for petroleum construction projects Pipeline crossing and spanning projects
Technical standards for cathodic protection of the outer wall of the bottom of steel storage tanks
The above standards shall come into force on June 1, 1996. China National Petroleum and Natural Gas Corporation
December 18, 1995
1.1 In order to standardize the design and construction of offshore steel fixed platform structures (hereinafter referred to as platforms), to ensure safety, reliability, technical excellence, economy and practicality, and environmental protection, this specification is specially formulated.
1.0.2 This specification is applicable to steel fixed platforms in shallow sea areas, and can also be used for steel fixed platforms in inland rivers and lakes.
1.0.3 The design and construction of platforms should take into account the marine environmental conditions such as wind, waves, currents, ice, etc. in shallow seas and the requirements for construction work
1.0.4 Reference standards
GB 232-88
GB 985--88
GB 986--88
GB 265089
GB 26S189
GB 2653-89
GBJ 17--88
Methods of metal bending test
Basic forms and dimensions of weld grooves for gas welding, manual arc welding and gas shielded welding
Basic forms and dimensions of weld grooves for submerged arc welding Impact test method for welded joints
Tensile test method for welded joints
Test method for bending and fanning of welded joints
Code for Design of Steel Structures
CB 3136-m-83
Hull construction accuracy standard
SY/T4084-95 Technical specification for beach environmental conditions and loadsSY/T4091-95 Technical specification for corrosion protection of beach petroleum engineeringSY/T4802-92 Recommended practices for planning, design and construction of fixed offshore platforms
Offshore fixed platform classification and construction specifications China Classification Society 1992 edition Port Engineering Technical Specifications 17th edition 1.0.5 In addition to implementing this specification, the design and construction of shallow-water steel fixed platforms shall also comply with the requirements of the current relevant national standards (specifications) and relevant regulations on marine management, safety and environmental protection.
2 Design conditions
2.1 General provisions
2.1.1 Purpose and plane dimensions
2.1.1.1 The purpose of the platform can be divided into drilling, oil production, oil storage, living or a combination thereof.
2.1.1.2 The plane size of the platform shall be determined by the layout of the equipment on the deck, and necessary clearance and distance shall be left between the equipment.
2.1.2, Location
The location of the platform shall be determined in accordance with the overall development plan, and the platform's marine environmental conditions, foundation conditions, construction conditions, supply and transportation methods shall also be considered. 2.1.3 Orientation
The orientation of the platform shall be determined by considering the direction of wind, waves, currents, ice and operational requirements.
2.1.4 Water depth and bottom deck elevation
2.1.4.1 The water depth shall be determined based on the tidal data of the area where the platform is located for not less than 1 year.
2.1.4.2 The elevation of the bottom deck of the platform shall be determined according to the following formula: T= H+ 2H/3+ A
Where -
--the elevation of the bottom deck of the platform or the bottom surface of the equipment, mH--the water surface elevation of the high water level, m
H.\--the maximum wave height of the high water level, m:4--the surplus height: take 0.2~1.0m
When there are equipment under the bottom deck of the platform, its influence on the elevation of the bottom deck shall be considered.
2.1.5 Consideration of existing wells
The influence of existing wells on the design and construction of the platform shall be considered during the design. 2.1.6 Overall layout
2.1.6.1 The layout, mass distribution and operation, safety and fire protection, and environmental protection of drilling and drilling equipment, oil production equipment, oil storage tanks, living facilities, etc. shall be considered during the design. 2.1.6.2 The following factors should be considered in the design of the platform: (1) Personnel embarkation and disembarkation and material loading and unloading, type, size, berthing position and mooring system of supply vessels
2] Number, size and location of boarding platforms 3] Type, capacity, number and location of deck cranes (4) Necessity of using helicopters and providing corresponding facilities 2.1.6.3 The boarding ladders and passages of the platform should meet the safety escape requirements of personnel. Each deck and important equipment area should be equipped with ladders and passages at least in two places 2.1.6.4 All systems and components on the platform should consider vibration prevention and noise reduction. 2.1.6.5 When the platform construction, ship draft and hoisting capacity are limited, multiple functional platforms should be set up separately, such as dividing the oil production platform into parallel platforms: production platform, living power platform, etc.
2.2 Environmental conditions and loads
2.2.1 General requirements
2.211 The selection of environmental conditions and the calculation of loads shall comply with the Technical Specifications for Beach Environmental Conditions and Loads
2.2.1.2. Various loads that may affect the structure or components shall be considered in the design. In addition to the loads specified in this section, the platform structure may also be subject to deformation loads caused by uneven settlement, temperature changes and fluctuations, as well as accidental loads caused by collisions, explosions, falling objects, etc.
2.2.2 Natural environmental conditions
The natural environmental conditions that the platform may encounter during manufacturing, construction and use include: wind, waves, tides, currents, ice, earthquakes, tsunamis, rain, frost, temperature, humidity, foundation deformation, seawater corrosion, marine organisms, etc. 2.2.3 Classification of design environment
2.2.31 Operating environmental conditions: refers to the environmental conditions that often occur during the construction and use of the platform. The selection of working environment conditions can ensure the normal construction and use of the platform.
2.2.3.2 Extreme environmental conditions: refers to the severe environmental conditions that rarely occur during the service life of the platform. The selection of extreme environmental conditions should be based on the safety of the platform. The selection of the recurrence period should be determined based on the service life and importance of the platform. The recurrence period of the design environmental conditions of the shallow sea platform can be set at 50 days, and the temporary structure can be appropriately lower.
2.2.4 Environmental loads
2.2.4.1 The main environmental loads acting on the platform should include the following five types (1) wind load;
(2) wave load:
(3) current load;
(4) ice load:
(5) ground load
2.2.4.2 The parameters of environmental loads should be determined by statistical analysis based on measured data. The calculation of environmental loads shall adopt recognized methods: mathematical simulation calculations or physical model tests shall be carried out to determine when necessary.
2.2.5 Service loads
2.2.5.1 The service loads acting on the platform can be divided into fixed loads and live loads. 2.2.5.2 Fixed loads refer to the constant loads acting on the platform. Fixed loads shall mainly include the following two parts:
(1) The mass of the platform in the air, such as the mass of the structure itself, the mass of the anode block, the mass of the superstructure, the mass of the auxiliary structure and the mass of fixed equipment, pipelines, etc.;
(2) The hydrostatic force acting on the underwater part of the platform. 2.2.5.3 Live loads are variable loads acting on the platform. Live loads shall mainly include the following five parts:
(1) The mass of movable drilling and oil production equipment: (2) The mass of movable living quarters, helicopters and other supplies: 4-3 The platform's boarding ladder and passage should meet the requirements of safe escape for people. Each deck and important equipment area should be equipped with ladders and passages at least at two locations. 2.1.6.4 All systems and components on the platform should consider vibration prevention and noise reduction. 2.1.6.5 When the platform construction, the draft and hoisting capacity of the ship are limited, multiple functional platforms should be set up separately, such as the oil production platform is divided into parallel platforms: production platform, life power platform, etc.
2.2 Environmental conditions and loads
2.2.1 General requirements
2211 The selection of environmental conditions and load calculation should comply with the "Technical Specifications for Beach Environmental Conditions and Loads"
2.2.1.2. Various loads that may affect the structure or components should be considered in the design. In addition to the loads specified in this section, the platform structure may also be subject to deformation loads caused by uneven settlement, temperature changes and fluctuations, as well as accidental loads caused by collisions, explosions, falling objects, etc.
2.2.2 Natural environmental conditions
Natural environmental conditions that may be encountered during the manufacturing, construction and use of the platform include: wind, waves, tides, currents, ice, earthquakes, tsunamis, rain, frost, temperature, humidity, foundation deformation, seawater corrosion, marine organisms, etc. 2.2.3 Design environment classification
2.2.31 Working environment conditions: refers to the environmental conditions that often occur during the construction and use of the platform. The selection of working environment conditions can ensure the normal construction and use of the platform.
2.2.3.2 Extreme environmental conditions: refers to the harsh environmental conditions that rarely occur during the service life of the platform. The selection of extreme environmental conditions should be based on ensuring the safety of the platform. The selection of the recurrence period should be determined based on the service life and importance of the platform. The recurrence period of the design environmental conditions of the shallow sea platform can be set at 50 days, and the temporary structure can be appropriately lower.
2.2.4 Environmental loads
2.2.4.1 The main environmental loads acting on the platform shall include the following five types (1) Wind loads;
(2) Wave loads:
(3) Current loads;
(4) Ice loads:
(5) Ground loads
2.2.4.2 Environmental load parameters shall be determined by statistical analysis based on measured data. Environmental loads shall be calculated using recognized methods: mathematical simulation calculations or physical model tests shall be performed when necessary.
2.2.5 Service loads
2.2.5.1 The service loads acting on the platform can be divided into fixed loads and live loads. 2.2.5.2 Fixed loads refer to the constant loads acting on the platform. Fixed loads should mainly include the following two parts:
(1) The mass of the platform in the air, such as the mass of the structure itself, the mass of the anode block, the mass of the upper structure, the mass of the auxiliary structure, and the mass of fixed equipment and pipelines;
(2) The hydrostatic force acting on the underwater part of the platform. 2.2.5.3 Live loads are variable loads acting on the platform. Live loads should mainly include the following five parts:
(1) The mass of movable drilling and oil production equipment: (2) The mass of movable living housing, helicopters and other supplies: 4-3 The platform's boarding ladder and passage should meet the requirements of safe escape for people. Each deck and important equipment area should be equipped with ladders and passages at least at two locations. 2.1.6.4 All systems and components on the platform should consider vibration prevention and noise reduction. 2.1.6.5 When the platform construction, the draft and hoisting capacity of the ship are limited, multiple functional platforms should be set up separately, such as the oil production platform is divided into parallel platforms: production platform, life power platform, etc.
2.2 Environmental conditions and loads
2.2.1 General requirements
2211 The selection of environmental conditions and load calculation should comply with the "Technical Specifications for Beach Environmental Conditions and Loads"
2.2.1.2. Various loads that may affect the structure or components should be considered in the design. In addition to the loads specified in this section, the platform structure may also be subject to deformation loads caused by uneven settlement, temperature changes and fluctuations, as well as accidental loads caused by collisions, explosions, falling objects, etc.
2.2.2 Natural environmental conditions
Natural environmental conditions that may be encountered during the manufacturing, construction and use of the platform include: wind, waves, tides, currents, ice, earthquakes, tsunamis, rain, frost, temperature, humidity, foundation deformation, seawater corrosion, marine organisms, etc. 2.2.3 Design environment classification
2.2.31 Working environment conditions: refers to the environmental conditions that often occur during the construction and use of the platform. The selection of working environment conditions can ensure the normal construction and use of the platform.
2.2.3.2 Extreme environmental conditions: refers to the harsh environmental conditions that rarely occur during the service life of the platform. The selection of extreme environmental conditions should be based on ensuring the safety of the platform. The selection of the recurrence period should be determined based on the service life and importance of the platform. The recurrence period of the design environmental conditions of the shallow sea platform can be set at 50 days, and the temporary structure can be appropriately lower.
2.2.4 Environmental loads
2.2.4.1 The main environmental loads acting on the platform shall include the following five types (1) Wind loads;
(2) Wave loads:
(3) Current loads;
(4) Ice loads:
(5) Ground loads
2.2.4.2 Environmental load parameters shall be determined by statistical analysis based on measured data. Environmental loads shall be calculated using recognized methods: mathematical simulation calculations or physical model tests shall be performed when necessary.
2.2.5 Service loads
2.2.5.1 The service loads acting on the platform can be divided into fixed loads and live loads. 2.2.5.2 Fixed loads refer to the constant loads acting on the platform. Fixed loads should mainly include the following two parts:
(1) The mass of the platform in the air, such as the mass of the structure itself, the mass of the anode block, the mass of the upper structure, the mass of the auxiliary structure, and the mass of fixed equipment and pipelines;
(2) The hydrostatic force acting on the underwater part of the platform. 2.2.5.3 Live loads are variable loads acting on the platform. Live loads should mainly include the following five parts:
(1) The mass of movable drilling and oil production equipment: (2) The mass of movable living housing, helicopters and other supplies: 4-
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