SY/T 4095-1995 Technical specification for the design and construction of shallow-water steel mobile platforms
Some standard content:
Petroleum and Natural Gas Industry Standard of the People's Republic of ChinaSY
SYT409595
Technical specification for structural designand construction of mobile steel platforms inbeach-shallow sea
Published on December 18, 1995
Implemented on June 1, 1996
China National Petroleum Corporation
Petroleum and Natural Gas Industry Standard of the People's Republic of China Technical specification for structural designand construction of mobile steel platforms inbeach-shallow sea
SY/ T 4095--95bzxZ.net
Editor: Shengli Oil Administration Drilling Technology Research Institute Shengli Oil Administration Oil Construction No. 1 Company:
Approving Department: China National Petroleum Corporation Petroleum Industry Press
1996 Beijing
General Rules for Structural Design
General Provisions
Environmental Conditions and Loads
Corrosion Allowance
General Requirements for Structural Analysis·
Strength Check
Stability Check
Fatigue Check
Stiffness Check
Vibration Analysis
Node Design
Ice Area Strengthening
Large Foundation
Special Requirements for Bottom-Sit Platforms
-General Provisions
Upper Shell||tt ||Columns and lower hull
Wave clearance
Statically indeterminate structures
Special requirements for jack-up platforms
General requirements for structural member dimensions
5.2 Special considerations for structures
Floating platforms
(21)
(23)
(24)
(29)
Watertight bulkheads and deep bulkheads
General provisions
7.2 Dimensions of watertight bulkheads
Dimensions of deep bulkheads
Drainage and vent holes
Mooring equipment
General provisions
Temporary mooring equipment
Anchors and anchor chains
Positioning mooring equipment
Stability, subdivision and load lines
General provisions
Intact stability
Damage stability
Bottom stability
Floating stability
Other issues related to platform stability
General provisions
Mechanical properties test
Structural steel for hull
Selection of steel for platform structure
-General provisions
Welding materials
Pre-welding preparation
Structural welding
Defect repair
Welding inspection
Construction, inspection and acceptance.
National Dialogue
(37)
(42)
(44)
(62)
(70)
(72 )
General provisions
Component prefabrication
Platform assembly
Tightness test and tilt test
Appendix A
Explanation of terms used in this specification
Additional notes
(72)
(84)
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:
"Standard for Investigation Methods of Corrosion and Protection of Steel Pipelines and Storage Tanks" and other 26 oil and gas industry standards (draft): have been reviewed and approved and are now approved as oil and gas industry standards and are hereby released. The numbers and names of the standards are as follows: 1
SYT 0087-95
SY T 05451995
SY/T40i3-95
SY / T 4041-95
Standard for investigation method 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 pipeline (replaces SYJ4013-87)
Installation and acceptance specification for special wet steam generator for oil field (replaces SYJ4041-89)
SY 7T 4084--95
sr T 4085--95
SY/ T 4086---95
SYT 4087--95
SY 7 T 4088--95
SY/T 4089--95
SY/T 4090-95
SY / T 4091--95
SY/I 4092-95
SYT 4093-95
SY /T 4094--95
SY T 4095--95
SY T 4096--95
SY /T 4097--95
SY / T 4098-95
SYT 4099-95
SY 7 T 4100--95
SY /T 4101--95
SY T 4102--95
SY / T 4103--1995
sY 4104-95
Technical specification for environmental conditions and loads in Yahai
Technical specification for oil and gas gathering and transportation in offshore oil fields
Technical specification for design and construction of pipeline network on structures in Weihui
Technical specification for air conditioning in Weining oil engineering
Technical specification for water supply and drainage in offshore oil engineeringElectrical specification for offshore oil engineering
Technical specification for power generation facilities in offshore oil engineeringCorrosion prevention technical specification for offshore oil engineering
Technical specification for thermal insulation in offshore oil engineering
Technical specification for selection and installation of cranes on offshore oil facilities
Technical specification for design and construction of shallow-water steel fixed platform structures Fan
Technical specification for design and construction of shallow-water steel mobile platform structure
Technical specification for protection device of oil wellhead in coastal watersTechnical specification for design and construction of sloped sandstone artificial island structure in coastal waters
Technical specification for design and construction of steel formwork-concrete artificial island structure with ring wall in coastal waters
Technical specification for design and construction of coastal seawall
Technical specification for surveying of coastal engineering
Technical specification for geotechnical engineering survey in coastal waters
Specification for inspection and installation of valves
Welding and inspection of steel pipelines
Quality inspection and assessment standard for petroleum construction projectsPipeline crossing and spanning projects
SY/T 0088--95
Technical standard for cathodic protection of outer wall of bottom of steel storage tanks
The above standards shall come into force on June 1, 1996. China National Petroleum Corporation
December 18, 1995
1.0.1 In order to make the design and construction of shallow-water oil steel mobile platforms safe, reliable, technologically advanced, economical and practical, and environmentally friendly, this specification is specially formulated. 1.02 This specification is applicable to the structural design, construction and modification and repair engineering of self-elevating, bottom-sitting, sled-type, surface-floating and other types of mobile platforms operating in shallow waters. The above platforms operating in other areas shall also meet other corresponding specifications. Various types of mobile platforms used in inland rivers, lakes and intertidal zones can refer to this specification. 1.0.3 Reference standards
GB22887Metal tensile test method
GB, T22994Metal Charpy notch impact test methodMetal bending test method
GB 23288
GB 71288
Structural steel for hull
GB 2975-82
GB 639786
Sampling regulations for mechanical and process performance tests of steelMetal tensile test specimens
SY/T4084-95
Technical specification for parts and loads in beach and sea environments
SY T 4094--95
Technical Specification for Design and Construction of Shallow Sea Steel Fixed Platform Structures
China Classification Society Specification for Classification and Construction of Seagoing Steel Vessels 1989 China Ship Inspection Bureau Rules for Ship Inclination Tests and Guidelines for Implementation of Still Water Rolling Tests 1996
1.0.4 In addition to implementing this specification, the design and construction of shallow sea steel mobile platform structures shall also comply with the provisions of relevant national standards (specifications) in force. 2 Terminology
2.0.1 Mobile Platform (mobile platform) A mobile platform is a structure designed for operation in a floating state on the water surface or in a seabed support state. It can be transferred from one operation site to another. In this specification, it is referred to as a platform.
2.0.2 Jack-up Platform (jack-up platform) A jack-up platform is a platform with movable pile legs: and the platform body can be raised to a certain height above the sea surface for operation.
2.0.3 Bottom supported platform A bottom supported platform is a platform with a fixed deck above the water surface and the lower shell sitting on the seabed during operation.
2.0.4 Creeping platform A creeping platform is a type of bottom supported platform, but this type of platform can rely on the power of the platform itself to make the lower shell of the platform move relative to the seabed, thereby realizing the migration of the platform. 2.0.5 Floating platform A floating platform is a platform composed of a single or multiple floating bodies and operates in a floating state.
2.0.6 Assembly platform An assembly platform is a platform composed of two or more platforms due to the needs of the operation function.
2.o.7 Platforms of other type Platforms of other type are designed as shallow-water mobile platforms and do not belong to the above types.
2.0.8 The terms and meanings of main dimensions shall comply with the following provisions: 2.0.8.1 Molded length The molded length of a self-elevating platform is the distance between the inner edges of the fore and aft shell plates along the main 12
side of the platform at 0.85 of the molded depth (see 2.0.8.3); The molded length of a bottom-seated platform is the maximum dimension of the side projection of the lower shell of the platform; The molded length of a floating platform is 96% of the total length of the waterline at 0.85 of the molded depth (see 2.0.8.3), or the length from the front edge of the stem on the waterline to the centerline of the rudder stock, whichever is greater. The molded length of a platform with an inclined keel shall be measured along the design waterline. 2.0.8.2 Molded breadth The molded breadth of a platform refers to the maximum width of the inner side of the two stern shell plates measured along a straight line perpendicular to the longitudinal surface of the platform (or the platform unit in a multi-hull platform). 2.0.8.3 Molded depth 2.0.8.4 Draft
The vertical distance from the molded base line to the relevant load waterline. 2.0.8.5 Water depth
The vertical distance from the seabed to the mean sea level plus the tidal height of astronomical tide and storm surge.
2.0.9 Molded base line The platform baseline is a horizontal line extending through the upper surface of the bottom shell plate, the lower shell plate or the bottom plate of the caisson.
2.0.10 The terms and meanings of platform structure shall comply with the following provisions: 2.0.10.1 Main body of platform 2.0.10.2 Legs
Legs are a shell or frame structure on a jack-up platform that moves relative to the platform body through power. Legs can be inserted into the seabed and lifted out of the water to a certain elevation.
2.0.10.3 Mat
Mat refers to the integral watertight structure connected to the bottom of each leg of a jack-up platform.
2.0.10.4 Shoe
Shoe refers to an independent box-shaped structure connected to the bottom of a single leg of a jack-up platform. 2.0.10.5 Upper hull
Upper hull refers to the upper platform structure of a bottom-seated platform. 2.0.10.6 Bottom hull hull The lower hull refers to the continuous floating body at the bottom of the bottom-seated platform. 2.0.10.7 Column
The column refers to the columnar structure connecting the upper hull and the lower hull or pile shoe of the bottom-seated platform.
2.0.11 Operating condition The operating condition refers to the state or mode of operation or movement of the platform at the well site or during transfer. The work involved in this specification includes the following: 2.0.111* Normal operation This condition refers to the state when the platform is in place: when normal operation is carried out. At this time, the environmental and operational loads should be within the design limits specified for the operation. At this time, the platform can be floating: or it can be bottom-seated. 2.0.11.2 "Storm self-sustaining condition" refers to the state when the platform may be subjected to the worst design environmental load. In this state. Due to the increase in environmental loads, the platform may need to interrupt normal operation to facilitate self-sustaining. At this time, the platform can be floating or bottom-seated.
2.0.113\ Migration condition" refers to the moving state of the platform from one geographical location to another, which includes storm towing state and general migration state. 2.0.12 Band plate width The section modulus of beams, frame materials and other components shall include a certain width of the shell plate supported by the component: this width is called band plate width and shall be determined in accordance with the following provisions. 2.0.12.1 For components along hatches, such as hatch longitudinal girders, hatch transverse beams, etc., the band plate width shall be half of the spacing between components or 16.5% of the free span of the component, whichever is smaller. 2.0.12.2 The band plate width of other components shall be half of the sum of the spacing on each side of the component, or 33% of the free span of the component, whichever is smaller.o.7 Platforms of other type Platforms of other type refer to platforms designed as shallow water mobile platforms that do not belong to the above types.
2.0.8 The terms and meanings of main dimensions shall comply with the following provisions: 2.0.8.1 Molded length The molded length of a self-elevating platform is the distance between the inner edges of the fore and aft shell plates along the main 12
side of the platform at 0.85 of the molded depth (see 2.0.8.3); The molded length of a bottom-seated platform is the maximum dimension of the side projection of the lower shell of the platform; The molded length of a floating platform is 96% of the total length of the waterline at 0.85 of the molded depth (see 2.0.8.3), or the length from the front edge of the stem on the waterline to the centerline of the rudder stock, whichever is greater. The molded length of a platform with an inclined keel shall be measured along the design waterline. 2.0.8.2 Molded breadth The molded breadth of a platform refers to the maximum width of the inner side of the two stern shell plates measured along a straight line perpendicular to the longitudinal surface of the platform (or the platform unit in a multi-hull platform). 2.0.8.3 Molded depth 2.0.8.4 Draft
The vertical distance from the molded base line to the relevant load waterline. 2.0.8.5 Water depth
The vertical distance from the seabed to the mean sea level plus the tidal height of astronomical tide and storm surge.
2.0.9 Molded base line The platform baseline is a horizontal line extending through the upper surface of the bottom shell plate, the lower shell plate or the bottom plate of the caisson.
2.0.10 The terms and meanings of platform structure shall comply with the following provisions: 2.0.10.1 Main body of platform 2.0.10.2 Legs
Legs are a shell or frame structure on a jack-up platform that moves relative to the platform body through power. Legs can be inserted into the seabed and lifted out of the water to a certain elevation.
2.0.10.3 Mat
Mat refers to the integral watertight structure connected to the bottom of each leg of a jack-up platform.
2.0.10.4 Shoe
Shoe refers to an independent box-shaped structure connected to the bottom of a single leg of a jack-up platform. 2.0.10.5 Upper hull
Upper hull refers to the upper platform structure of a bottom-seated platform. 2.0.10.6 Bottom hull hull The lower hull refers to the continuous floating body at the bottom of the bottom-seated platform. 2.0.10.7 Column
The column refers to the columnar structure connecting the upper hull and the lower hull or pile shoe of the bottom-seated platform.
2.0.11 Operating condition The operating condition refers to the state or mode of operation or movement of the platform at the well site or during transfer. The work involved in this specification includes the following: 2.0.111* Normal operation This condition refers to the state when the platform is in place: when normal operation is carried out. At this time, the environmental and operational loads should be within the design limits specified for the operation. At this time, the platform can be floating: or it can be bottom-seated. 2.0.11.2 "Storm self-sustaining condition" refers to the state when the platform may be subjected to the worst design environmental load. In this state. Due to the increase in environmental loads, the platform may need to interrupt normal operation to facilitate self-sustaining. At this time, the platform can be floating or bottom-seated.
2.0.113\ Migration condition" refers to the moving state of the platform from one geographical location to another, which includes storm towing state and general migration state. 2.0.12 Band plate width The section modulus of beams, frame materials and other components shall include a certain width of the shell plate supported by the component: this width is called band plate width and shall be determined in accordance with the following provisions. 2.0.12.1 For components along hatches, such as hatch longitudinal girders, hatch transverse beams, etc., the band plate width shall be half of the spacing between components or 16.5% of the free span of the component, whichever is smaller. 2.0.12.2 The band plate width of other components shall be half of the sum of the spacing on each side of the component, or 33% of the free span of the component, whichever is smaller.o.7 Platforms of other type Platforms of other type refer to platforms designed as shallow water mobile platforms that do not belong to the above types.
2.0.8 The terms and meanings of main dimensions shall comply with the following provisions: 2.0.8.1 Molded length The molded length of a self-elevating platform is the distance between the inner edges of the fore and aft shell plates along the main 12
side of the platform at 0.85 of the molded depth (see 2.0.8.3); The molded length of a bottom-seated platform is the maximum dimension of the side projection of the lower shell of the platform; The molded length of a floating platform is 96% of the total length of the waterline at 0.85 of the molded depth (see 2.0.8.3), or the length from the front edge of the stem on the waterline to the centerline of the rudder stock, whichever is greater. The molded length of a platform with an inclined keel shall be measured along the design waterline. 2.0.8.2 Molded breadth The molded breadth of a platform refers to the maximum width of the inner side of the two stern shell plates measured along a straight line perpendicular to the longitudinal surface of the platform (or the platform unit in a multi-hull platform). 2.0.8.3 Molded depth 2.0.8.4 Draft
The vertical distance from the molded base line to the relevant load waterline. 2.0.8.5 Water depth
The vertical distance from the seabed to the mean sea level plus the tidal height of astronomical tide and storm surge.
2.0.9 Molded base line The platform baseline is a horizontal line extending through the upper surface of the bottom shell plate, the lower shell plate or the bottom plate of the caisson.
2.0.10 The terms and meanings of platform structure shall comply with the following provisions: 2.0.10.1 Main body of platform 2.0.10.2 Legs
Legs are a shell or frame structure on a jack-up platform that moves relative to the platform body through power. Legs can be inserted into the seabed and lifted out of the water to a certain elevation.
2.0.10.3 Mat
Mat refers to the integral watertight structure connected to the bottom of each leg of a jack-up platform.
2.0.10.4 Shoe
Shoe refers to an independent box-shaped structure connected to the bottom of a single leg of a jack-up platform. 2.0.10.5 Upper hull
Upper hull refers to the upper platform structure of a bottom-seated platform. 2.0.10.6 Bottom hull hull The lower hull refers to the continuous floating body at the bottom of the bottom-seated platform. 2.0.10.7 Column
The column refers to the columnar structure connecting the upper hull and the lower hull or pile shoe of the bottom-seated platform.
2.0.11 Operating condition The operating condition refers to the state or mode of operation or movement of the platform at the well site or during transfer. The work involved in this specification includes the following: 2.0.111* Normal operation This condition refers to the state when the platform is in place: when normal operation is carried out. At this time, the environmental and operational loads should be within the design limits specified for the operation. At this time, the platform can be floating: or it can be bottom-seated. 2.0.11.2 "Storm self-sustaining condition" refers to the state when the platform may be subjected to the worst design environmental load. In this state. Due to the increase in environmental loads, the platform may need to interrupt normal operation to facilitate self-sustaining. At this time, the platform can be floating or bottom-seated.
2.0.113\ Migration condition" refers to the moving state of the platform from one geographical location to another, which includes storm towing state and general migration state. 2.0.12 Band plate width The section modulus of beams, frame materials and other components shall include a certain width of the shell plate supported by the component: this width is called band plate width and shall be determined in accordance with the following provisions. 2.0.12.1 For components along hatches, such as hatch longitudinal girders, hatch transverse beams, etc., the band plate width shall be half of the spacing between components or 16.5% of the free span of the component, whichever is smaller. 2.0.12.2 The band plate width of other components shall be half of the sum of the spacing on each side of the component, or 33% of the free span of the component, whichever is smaller.12 Band plate width The section modulus of beams, frames and other components shall include a certain width of the shell plate supported by the component: this width is called the band plate width and shall be determined in accordance with the following provisions: 2.0.12.1 For components along hatch doors, such as hatch longitudinal girders, hatch transverse beams, etc., the band plate width shall be half of the member spacing or 16.5% of the member free span, whichever is less. 2.0.12.2 The band plate width of other components shall be half of the sum of the member spacings on each side, or 33% of the member free span, whichever is less.12 Band plate width The section modulus of beams, frames and other components shall include a certain width of the shell plate supported by the component: this width is called the band plate width and shall be determined in accordance with the following provisions: 2.0.12.1 For components along hatch doors, such as hatch longitudinal girders, hatch transverse beams, etc., the band plate width shall be half of the member spacing or 16.5% of the member free span, whichever is less. 2.0.12.2 The band plate width of other components shall be half of the sum of the member spacings on each side, or 33% of the member free span, whichever is less.
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