SY/T 10006-2000 Specification for offshore wellhead surface safety valves and subsea safety valves
Some standard content:
ICS75.180.10
Registration No.: 6950—2000
People's Republic of China Offshore Oil and Gas Industry Standard SY/T 10006—2000
Replaces SY/T10006—1996
idt API SPEC 14D: 1994
Specification for Wellhead Surface Safety Valves and UnderwaterSafety Valves for Offshore Service2000-04-10 Issued
State Administration of Petroleum and Chemical Industry
2000-10-01 Implementation
SY/T10006—2000
API Foreword
Policy Statement
Chapter Scope
Chapter 2 Abbreviations and Definitions
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Chapter 8
Chapter 9
Overview·
Material Requirements||t t||General requirements
Quality manufacturing requirements
Equipment marking
Storage and transportation
Testing and assembly
Chapter 10
Repair and remanufacturing requirements
Appendix A (Appendix of standard recommendation)
Appendix B (Appendix of standard)
Appendix C (Addendum of standard)
Appendix D (Appendix of standard)
Metric conversion
Recommendations for ordering wellhead surface safety valves and subsea safety valves for offshore engineering Failure report
Licensing criteria for testing agencies
SYIT 10006-—2000
API Foreword
The purpose of this specification is to provide requirements for parallel-port surface safety valves and subsea safety valves. The surface safety valve or subsea safety valve (SSV or SV) is a device used to ensure the closure of the well. APRP14H recommends the use of offshore surface safety valves and subsea safety valves and the installation, operation, maintenance and test procedures of wellhead surface safety valves and subsea safety valves. This standard is established as an API specification under the supervision of the Offshore Safety and Pollution Prevention Equipment Committee (OSAPE) of the API Development Department, and is carried out under the guidance of the API Offshore Operators Committee (OOC) and the Western States Petroleum Association (WSPA). The scope of work of the AFI OSAPE Committee is as follows: API specifications and recommendations for safety and pollution prevention equipment and systems for offshore oil and gas field production, focusing on standards for manufacturing, equipment testing and system analysis methods.
Other publications developed by the committee are as follows: RP14A: Specification for Subsurface Safety Valve Equipment RP14H: Recommended Practice for Design, Installation, Repair, and Operation of Subsurface Safety Valve Systems RP14C: Recommended Practice for Analysis, Design, Installation, and Testing of Basic Salely Systems on Ollshore Productian Plafforms RP14E: Recommended Practice for Design and Installation of Offshnre: Production Platform Piping Systems RP14G: Recommended Practice for Fire: Prevention and Contrul on Type Offshore Production Platforms RP14H: Recommended Practice for Use of Surface Safety Valves and Submerged Safety Valves Offshore RP14I: Recommended Practice for Leak and Hazards Analysis for Offshore Production Facilities NOTICE TO USERS OF THIS PUBLICATION: A.PI specifications often include bold vertical lines in the margins to indicate clauses that have been revised from a previous edition. These bold vertical lines indicate clauses that have been substantially revised in this edition and are not included in this text. Each section of this text incorporates revisions from previous editions. This publication is the ninth edition and supersedes all previous editions. It incorporates revisions to the eighth edition, dated August 1991, and is approved by correspondence.
This standard is effective from the date printed on the white cover, but may be used voluntarily from the date of distribution. Requests for interpretation of this specification, suggestions for revisions, or permission to reproduce or translate all or any part of this specification should be addressed to the Manager, Exploration and Production, 700 North Pearl, Sute 1840 (LB-382), Dallas, TX 75201-2845,SY/T10006—2000
In order to meet the needs of safe production of my country's offshore oil and gas resources development and reasonably select and use parallel surface safety valves and underwater safety valves, the Offshore Oil Corporation adopts the API SPEC14D "Specification for Wellhead Surface Safety Valves and Underwater Safety Valves for Ofshore Service" 1994 Edition of the American Petroleum Institute, and revises the offshore oil and gas industry standard SY/T10006-1996 "Specification for Offshore Wellhead Top Safety Valves and Underwater Safety Valves" which is equivalent to the API SPEC14D 1991 Edition, and publishes it as a new offshore oil and gas industry standard. To provide the requirements of a series of technologies such as materials, welding, quality control, storage and transportation of the corresponding surface safety valves and underwater safety valves.
In the revision, the original Chinese translation of the standard was changed to "Specification for Offshore Surface Safety Valves and Underwater Safety Valves" according to the on-site usage habits. In the design, construction and use of offshore oil and gas development projects, when laws, regulations and provisions of the government of the country where the original standard is located or other competent authorities are involved, the corresponding laws, regulations and provisions promulgated by the government of the People's Republic of China or the government's production and management department shall be followed. The data or quantitative calculation methods of environmental conditions such as wind, waves, currents, ice, temperature, earthquakes, etc. in the original standards can be used as a reference if they are in line with my country's actual conditions. Otherwise, data and quantitative calculation methods that meet my country's actual environmental conditions should be used. In. Regarding measurement units, legal measurement units are mainly used, that is, the legal measurement unit values are in front, and the corresponding values of the imperial units are marked in brackets after them. The shape characteristics, constants and coefficients of the formula curves in the original standards are not changed. Where imperial units are used, imperial units are still used. This standard was issued on April 11, 2000 and will be implemented on October 1, 2000. Appendix 4, Appendix C and Appendix D of this standard are all appendices of the standard. This standard was proposed and drafted by China National Offshore Oil Corporation. The drafting unit of this standard is China National Offshore Oil Production and Research Center. The main drafters of this standard are Bai Yaxin and Cao Xudong. The chief reviewer of this standard is Li Min.
Japanese Import Management.
Research Center.
SY/T10006——2000
Policy Statement
API's various publications are only for general issues. When it comes to specific issues, local, state and federal laws and regulations should be consulted.
API does not assume the obligation of employers, manufacturers or suppliers to inform, properly train or equip their employees and other personnel on the health and safety risks and preventive measures, nor does it assume their legal responsibilities under local, state or federal laws. Nothing in any API publication should be construed, by implication or otherwise, as granting any right to make, sell or use any method, apparatus or product covered by any patent. Nor should anything in this publication be construed as exculpating any person from liability for infringement of any patent.
Normally, API standards are reviewed and revised, re-approved or revoked at least every five years. Occasionally, this review cycle may be extended. The status of this publication may be obtained from the API Exploration and Production Division (telephone 214953-1101). The API Publications and Materials Division (1220 L St., NW, Washington, DC 20005, telephone 202-682-8035) publishes and updates its catalog of publications and materials annually and quarterly.
The American Petroleum Institute (API) publishes specifications to facilitate the purchase of standardized equipment and materials and to provide guidance to manufacturers of equipment or materials manufactured to API specifications. These specifications are not intended to obviate the need for advanced technology or in any way prohibit anyone from purchasing or manufacturing products that conform to other specifications.
The development and publication of API specifications and the API monogram outline are not intended to in any way prohibit the purchase of products from companies that are not authorized to use the API monogram.
API specifications are available for use by anyone who is willing to implement them, and the Society has made unremitting efforts to ensure the accuracy and reliability of the data in these specifications. However, the Society makes no representations, warranties, or guarantees regarding any published API specification and hereby expressly disclaims any liability or responsibility for loss or damage caused by the use of any API specification, for violations of any federal, state, or municipal regulations that may conflict with such regulations, or for infringement of any patent rights caused by the use of any API specification. Any manufacturer who marks equipment or apparatus in accordance with the marking requirements of an API specification shall be responsible for the compliance of the product with all applicable API specifications. The American Petroleum Institute is fully responsible for the requirements of the use of the People's Republic of China's offshore oil and gas industry standard Specification for Wellhead Surface Safety Valves and UnderwaterSafety Valves for Offshore Servicc Chapter 1 Scope
SY/T 10006-2000
Replaces SY/T10006-—1996
idt API SPEC 14D:1994
101 Purpose. This specification applies to valves with flanges or other industrially accepted non-threaded end connections and valves of multiple processing or shut-off type used as wellhead surface safety valves (SSV). This specification also applies to subsea safety valves (USV) at or near subsea wellheads. 102 Use level. Acceptable minimum standards for materials, manufacture and testing of SSV/USV valves of this level: In order to prove whether a parallel port SSV/USV valve is qualified, it must pass the verification test specified in Chapter 4, including the acceptable minimum standards for materials, manufacture and performance of the open position locking mechanism: The four use levels are as follows: 102a1 level is suitable for use under standard conditions. This level of SSV/USV valves is intended for oil or gas wells that will not be adversely affected by corrosion (stress corrosion cracking or metal loss) or sand abrasion and dirt. 102b2 level is suitable for use under conditions that may contain sand. This level of SSV/SV valves is intended for oil wells or gas wells where there are impurities such as sand that can cause SSV/USV failures. This valve must also meet the requirements of level 1 use conditions. 102c3 level is suitable for use under conditions where stress corrosion cracking may occur. This level of SSV/USV valves is intended for oil or gas wells where it is estimated that the corrosive media contained will cause stress corrosion cracking. Both valves in this class must meet the requirements of Class 1 or Class 2 valves, whichever is applicable, and be made of materials that resist stress corrosion cracking. This class has two sub-classes: Class 3S for resistance to sulfide stress corrosion cracking and Class 3C for resistance to chloride stress corrosion cracking.
102d Class 4 is suitable for use under corrosive metal loss conditions. This class of SSV/USV valves is intended for use in oil or gas pipelines where corrosive metal loss will cause valve failure. Both valves in this class must meet the requirements of Class 1 or Class 2 valves, whichever is applicable. This class of valves shall be made of materials that resist metal loss corrosion.
103 Proofing test. The conditions of the proofing test in this specification are not exactly the same as the actual conditions of the pipeline. 104 Referenced standards
104.1 Overview
The referenced standards in this specification include other standards of the American Petroleum Institute listed in Table 104.1 and partial or partial references to industry or government standards.
NOTE: Only those standards listed in Table 104.1 are considered part of this specification. Recommended texts of these standards are not considered part of this specification.
104.2 Requirements
The requirements of other standards incorporated by reference in this specification are essential for the safety and interchangeability of prior-generation equipment: For the provision of equivalent standards to those in this specification, contact AII Exploration and Production Division, 700 North Pearl, Suite 1840 (LB-382), Dalfa, Tx 75201-2845, 104.3 Equivalent standards
Before other internationally recognized standards are used as equivalent standards, they should be submitted to AP and approved. Approved by the State Administration of Petroleum and Chemical Industry on 2000-14-10 Implemented on 2000-10-01
105 Measurement units
SY/T 10006-2000
This specification uses decimal/imperial as the standard unit of length, and nominal sizes are still expressed in fractions. This difference from previous versions of API Spec 14D reflects current widespread industry practice and is not intended to revise fractional dimensions or tolerances in earlier versions. Table 304.1 gives fractional and decimal equivalents. For this specification, fractions and their corresponding decimal equivalents are equivalent and interchangeable. Metric conversions are shown in Appendix A. 106 Appendix
Except for those required to be cited in this article, other appendices are for reference only. Table 104.1 Reference Standards
(Reference 104.1, unless otherwise specified, this table is the latest version applicable) 1. ANSIB1.1: "Uniform Standard Progressive Thread" 2. ANSIB18.2.2: "Square and Hexagonal Nuts" 3. API Petroleum Measurement Standards Manual Chapter 10 Section 10 Part 4: "Sediment and Water" 4. API Petroleum Measurement Standards Manual Chapter 15: "Guide to the Use of the International System of Units" 5. API RP13B: "Standard Procedures for Field Testing of Drilling Fluids" 6. API RP1 4H: "Offshore use of ground safety valves and underwater safety valves" 7. API Spec 5CT: "Casing and tubing" 8. API Spes 6A: "Wellhead equipment"
9. API Std. 5B: "Threading, measurement and flaw detection of casing, tubing and transmission pipe threads" 10. API Spec 5L: "Transmission pipe"
11. ASME boiler and pressure vessel standard Chapter 5 "Non-destructive testing" Article 5: "UT inspection methods for materials and finished products", page 522542
12. ASME boiler and pressure vessel standard Chapter 8 Part 1 a) Volume UG-101: "Review test for establishing maximum allowable working pressure" b) Appendix 4: "Circular indication diagram acceptance test for determining circular readings in welding with radioactive rays" 13. ASME Chapter 8 Part 2: "Pressure vessel replacement rules
a) Appendix 4: "Design based on stress analysis" b) Appendix 6: "Laboratory stress Analysis》14. Chapter 9 of ASME Boiler and Pressure Vessel Standard: "Welding and Brazing Qualification" 15. ASTMA193: "Alloy Steel and Stainless Steel Bolt Materials for High Temperature Service"
16. ASTMA194: "Carbon Steel and Alloy Steel Nuts for Bolts in High Temperature and High Pressure Operations" 17. ASTMA307: "Standard Joints for Carbon Steel External Threads" 18. ASTMA320: "Alloy Steel Bolt Materials for Low Temperature Service"
Equipment and System Cleaning and Descaling Practices" 19. ASTMA380: "Stainless Steel Parts
20. ASTMA370: "Standard Methods and Definitions for Mechanical Testing of Steel Products" 21. ASTMA388: "Recommended Practices for Ultrasonic Inspection of Heavy Steel Castings" 22. ASTMA453: "Bolt Materials Resistant to High Temperatures, with a Service Strength of 50-120psi and an Expansion Coefficient Comparable to Austenitic Steel" 23. A STMA609: "Ultrasonic Inspection Practice for Castings, Carbon Steel, Low Alloy Steel and Martensite Stainless Steel" 24. ASTMA703: "Standard Methods and Definitions for Mechanical Testing of Steel Parts" 25. ASTME10: "Standard Test Method for Brinell Hardness of Metallic Materials" 26. ASTME18: "Standard Test Method for Rockwell Hardness and Rockwell Surface Hardness of Metallic Materials" 27. ASTME92: "Standard Test Method for Vickers Hardness of Metallic Materials" 28. ASIME94: "Standard Test for Radial Testing" 29. ASTME140: "Standard Hardness Conversion Table for Metals" 30. ASTME165: "Standard Practice for Liquid Penetration Inspection" 2
SY/T10006—2000
31. ASTME186: "Reference Radioactivity of Steel Castings with Wall Thickness of 2\-4%\" 32. ASTME280: "Reference Radioactivity of Steel Castings with Wall Thickness of 4%\-12\" 33. ASTME428: "Standard Recommended Practice for the Manufacture and Control of Steel Reference Blocks for Ultrasonic Inspection" 34.ASTME446: "Reference Radioactivity of Steel Castings with a Thickness of 2\" 35.ASTME709: "Standard Recommended Practice for Magnetic Particle Production Inspection" 36.ASTME747: "Standard Method for Controlling Radioactivity Test Quality with Steel Wire Needle Probe" 37.MSSSP-55: "Quality Standard for Steel Castings of Valves, Faucets, Fittings and Other Pipeline Components (Visual Method)" 38.MIL-H-6875H: "Heat Treatment of Steel Aircraft Processing" Chapter 3 39.MIL-STD-105D: "Sampling for Property Inspection" 40. NACE Standard MRO 175: "Metallic materials resistant to sulfide stress corrosion cracking for oilfield equipment" 41. SEA AS 568A: "Dimensional standards for spacecraft O-rings" 42. ASTM D 1418: "Test methods for rubber and rubber latex" 43. SNT-TC-1A: "Qualification and certification of non-destructive testers" 1984 or later version Note: Other national or internationally recognized standards must be submitted to the United States for use. The following abbreviations are used in this specification: American Iron and Steel Institute American National Standards Institute American Petroleum Institute and can only be used as equivalent standards after being incorporated into this standard with permission. Abbreviations and definitions t||References to ASMS ESPPE 1 and ASMS ESPPE 2 for description American Society for Nondestructive Testing
American Petroleum InstitutebZxz.net
Acceptance Quality Levels
American Society of Mechanical Engineers
American Society for Testing and Materials
American Welding Society
MIL-STD Military Standards
Manufacturer Standards Association for the Valves and Fittings Industry National Association of Corrosion Engineers
Nondestructive Examination
API Development and Production Committee on Standards for Offshore Safety and Anti-Contamination Equipment Qualification Test Pieces
The following definitions relate to surface safety valves and (or subsea safety valves) and are used to define the terms used in this specification. Designated Facility (Author) Authorized Facility – a facility designated by the operator under the applicable product quality assurance program specified in the purchase order.
Authorized Product Quality Assurance Program – API or SPPE quality program. Date of Manufacture – the final acceptance date of the manufacturer's finished equipment. Chloride Stress Cracking – when iron-based alloy steel is exposed to a well flow containing water and chlorides at certain concentrations and temperatures, it can cause stress corrosion cracking, which can be promoted by the presence of other components such as oxygen. 3
SY/T 10006--2000
Repair/Remanufacturing Date (Dat:Repair/Remanufacture - The final acceptance date of the repairer/remanufacturer's crystal forming equipment. Failure - The abnormal performance of a mechanism or equipment component that prevents it from completing its designed function. Heat Sensitive Lockopen Device - A device installed on the SSV valve actuator to keep the parallel port ground safety valve fully open until it senses sufficient heat to release the mechanism and close the valve. Manufacturer - A major manufacturer that designs, manufactures and supplies SSV/L'SV valve actuators and (or) SSV/USV valves. SSV/USV valves and SSV/USV valve actuators are functional entities and do not represent the components provided. Metal Loss Corrosion - The loss of metal caused by exposure to a parallel flow containing water, salt water, carbon dioxide, hydrogen sulfide, oxygen or other corrosive media. Normally Closed Valve - A valve that moves to the closed position when the power supply is lost. Operating Manual - A publication published by the manufacturer that includes detailed data and instructions on the design, installation, operation and maintenance of SSV/USV valves:
Pressure Containing Parts - Parts that lose their intended function after failure and will cause the pressurized fluid to be released into the atmosphere. They only include the valve body, bonnet and stem of the SSV/USV valve; the piston, cylinder and rod (shaft) of the actuator. Pressure Controlling Parts - Parts that are intended to control or regulate the movement of pressurized fluid: only include SSV/USV valves and valve seats.
Qualified Parts - Parts manufactured according to a specified product quality assurance program that, when replaced, can achieve or exceed the performance of the original parts.
Rated Working Pressure - The maximum internal pressure that the equipment is designed to withstand and/or control. Working pressure should not be confused with test pressure.
Remanufacture - refers to the disassembly, reassembly and testing of API 14D equipment with or without replacement of qualified parts using machining, welding, heat treatment or other manufacturing operations. Remanufacturing does not include replacement of valve bodies. Repair - refers to the disassembly, reassembly and testing of API 14D equipment with or without replacement of qualified parts in these operations: Repair does not include machining, welding, heat treatment, other manufacturing operations or replacement of valve bodies. Repairer/Remanufac:turer - a person or company engaged in repair/remanufacturing at a designated facility. Manufacturing Operation - refers to operations involving, but not limited to, machining, welding, heat treatment or other processes used to produce a finished product.
Stress Corrosion Cracking - cracking caused by the combined effects of stress or corrosion. Sulfide Stress Cracking - stress corrosion cracking of materials exposed to an upwelling flow containing sulfide oxygen and water.
Surface Safety Valve (SSV) - a wellhead assembly that will automatically close when the power source is lost. When used in this specification, it includes the SSV valve and SSV actuator.
SSV/USV Actuator - a device that opens the valve when power is supplied and automatically closes the valve when power is lost or released:
SSV/USV Valve - the part of the wellhead surface safety valve or subsea safety valve that receives the well flow and cuts off the well flow when it is closed.
Test Agency - any independent third-party agency that provides test equipment and implements the verification test procedures for Class 2 wellhead surface safety valves or subsea safety valves that meet the requirements of this specification. - Traceability of the molten material (Traceability, JobLot) - The ability to determine whether a component is derived from a certain molten material blade. Subsea Safety Valve (USV) - A valve assembly that automatically closes when the valve supply is lost (installed in the underwater port). The USV valve referred to in this specification shall include the underwater safety valve and the valve actuator. Gate Valve (Vilve, Gate) - A valve designed to be either fully open or fully closed, and the movement direction of its closing member, i.e., the gate, is perpendicular to the flow direction. Valve Bore Sealing Mecharism - Those internal components that can prevent the fluid from passing through the barrel, such as the valve plate, valve ball, 4
SY/T 100062000
cock, poppets, butterfly plates and their respective bases, etc. Chapter 3 Overview
301 Performance Requirements
301.1 Overview
Wellhead surface safety valves (SSV) and subsea safety valves (USV) designed and manufactured in accordance with this specification shall be made of materials that meet the requirements of Chapter 4 of this specification and shall satisfactorily complete the tests required by Chapter 12 of this specification. SSWV/USV valves shall be of normally closed design. When the valve body is under pressure within the rated pressure range and the actuator power is supplied or lost instantaneously, the valve shall be able to operate without damage to the valve and actuator. The design conditions of USV shall also include the maximum water depth.
301.2 Related Specifications
In addition to the requirements of this chapter, SSV/USV valves must meet the relevant dimensional requirements specified in API Spec 6A: 301.3 SSV Valve Design
This specification includes flanged valves or other industry-approved valves with non-threaded ends and multiple-machined or shut-off type valves used as wellhead surface safety valves. Multiple-machined or shut-off type valves are considered to be Class 2 parallel port SSVs. If they are the same as the internal design of SSV valves on the manufacturer's production line, they do not need to be inspected and tested again after passing the verification of Chapter 9 of this specification. These valves must be manufactured in accordance with all other requirements of this specification.
301.4 LSV Valve Design
LSV valve design must comply with the requirements of SSV valve design. However, there are the following exceptions: DUSV valves can be used for any standard or other L industry-approved end connection: ②USV valves may be non-standard diameters and/or end-to-end lengths. End connections not determined in API Spec 6A should meet all other requirements of this specification.
301.5 SSV/USV actuator design
The manufacturer shall provide SSV/USV valve actuator designs with the following characteristics: 301.5a The internal components shall be resistant to environmental corrosion, operating media and well flow under normal operating conditions. 301.5b The closing force of the valve actuator shall be sufficient to close the valve under the worst closing conditions specified by the valve manufacturer: 301.5c Pneumatically operated valve actuators shall provide a pressure relief mechanism that relieves pressure at no more than the rated working pressure of the actuator. 301.5d SSV/USV valve actuators must be designed so that when the SSV/USV valve leaks, there will be no pressure increase in the actuator housing. 301.5e SSV/USV valve actuators shall not have permanent lock-open performance. 301.6 Thermal lock-open device design. The SSV actuator manufacturer shall provide an accessory that serves as a thermal lock-to-open device: A Type I thermal lock-to-open device shall maintain the SSV valve in the fully open position when the ambient temperature is up to 66°C (150°F), the SSV valve body is pressurized to its rated working pressure, and the SSV actuator cylinder is leaking to the atmosphere. 301.6a The following temperature actuation conditions must be met 301.6a(1) The lock-to-open device shall allow the SSV valve to close automatically within six minutes under the power of the S5V actuator alone (i.e., there is no pressure in the SSV valve body or no power is provided to the SSV actuator) at a controlled ambient temperature of 538°C ± 14°C (1000°F ± 25°F). Tests to verify this design feature shall be conducted in an environment where the air velocity through the SSV actuator is the same as that in which natural air convection alone occurs. c301.6a (2) Fusible materials used shall meet the manufacturer's design-specifications and melt within ±10% of 1: The thermal device shall be designed to be activated at a maximum continuous temperature of 204°C (400°F). 301.6b The design of the lock-to-open device shall ensure that the parts released when the device is actuated will not be potentially hazardous to personnel. 302 Conditions of use
302.1 Pressure ratings
3021a Overview. The valve shall be designed to operate at the following rated working pressures: 13.8MPa (2000psi), 20.7MPa (3000psi), 34.5MPa (5000psi), 69.0MPa (10000psi), 103, 4MPa (15000psi), 138. 0MPa (20000psi). 5
SY/T10006—2000
302.1b Design considerations. The design should consider the effects of the load caused by the sealing pressure and other pressures. 302.1c SSV/USV valve pressure considerations. The rated operating pressure of the SSV/USV valve should be the lowest rated working pressure of any component. 302.2 Temperature grade
302.2a Overview. The equipment should be designed to work within the minimum and maximum temperature ranges of different limited temperature grades, as shown in Table 302.2. The minimum temperature is the lowest ambient temperature that the equipment can withstand. The maximum temperature refers to the maximum temperature of the fluid in direct contact with the equipment. 302.3 Working level. Well
■Surface safety valve/subsea safety valve (SSV/USV) is divided into working levels as given in Chapter 1, 102: Level 1 valve - used under standard conditions; Level 2 valve - used under sandy conditions; Level 3 valve - used under stress corrosion cracking conditions; Level 4 valve - used under metal loss corrosion conditions. Valves that meet the comprehensive design requirements of these use levels can be provided in accordance with the requirements of this specification, but they must be marked according to the method used in Chapter 7.
302.3a Working level requirements. SSV/USV valve parts exposed to rising fluids shall be resistant to the effects (e.g., erosion, corrosion) of the service conditions specified for the corresponding service classification of the SSV/USV valve. Table 302.2 Temperature Ratings
Temperature Classes
302.4 SSV/USV Actuators
Fahrenheit (°F)
Celsius (°C)
Equipment shall be designed to operate at the minimum and maximum temperatures of the various specified temperature classes, as shown in Table 302.2302.4a Temperature Classes
.
The minimum temperature is the lowest ambient temperature in which the equipment operatesThe maximum temperature is the highest temperature of the fluid enclosed by the equipment. 302.4b Low Temperatures. For temperature classes of -29°C (-20°F) and below, pressure-containing metal parts shall be made of materials having the material hardnesses shown in Tables 403.3 and 403.4.
302.4c Pressure Classes. SSV/USV actuators covered by this specification shall be designed by the manufacturer for pressure ratings not exceeding 138.0 MPa (20,000 psi). The pressure rating shall apply to components subjected to pressure at rated temperatures. 303 Design Methods
303.1 Flanges
API flanges have been designed in accordance with design criteria and methods established by the API Committee on Standardization of Valves and Wellhead Equipment (C6). 303.2 Bodies and Bonnets
Bodies and bonnets shall be designed in accordance with one or more of the following methods. Note: When the stress values calculated by these methods exceed the allowable stress values, these stress values must be calculated by other industry-recognized methods. Fatigue analysis and local load stress analysis are beyond the scope of this specification. 303.2a ASME. The design methods described in Section 2, Recital 4, Chapter 8 of the ASME Boiler and Pressure Vessel Code may be used to calculate pressure equipment. The design allowable stress shall be limited by the following criteria: S,=0.83Sy
SM=2Sv/3
SY/T10006—2000
Where: Sm-design stress intensity at rated working pressure psi; S,-maximum basic membrane stress intensity allowed in hydrostatic test psi; Sy-minimum rated yield strength of material psi. 303.2b Deformation energy theory The deformation energy theory method can be used for design calculation of pressure equipment. The basic pressure vessel wall thickness can be determined in combination with the three-dimensional stress of the hydrostatic test and is limited by the following criteria: Sg=Sy
Where: S-maximum allowable equivalent stress calculated by deformation energy theory method psi; Sy-minimum rated yield strength of material pai. 303.2c Test stress analysis. Test stress analysis is described in Appendix 6 of Chapter 8, Section 2 of ASME Boiler and Pressure Vessel Code. 303.2d Verification test analysis. The verification test is described in ASME Boiler and Pressure Vessel Code, Chapter 8, Section 1, UG-101. 303.3 Bolted Connections
The allowable tensile stress of bolts shall be determined by considering the initial tightening, rated working pressure and hydrostatic test pressure. The bolt stress based on the cross-sectional area of the thread root shall not exceed the following limit: SA-0.83S
Where: S-maximum allowable tensile stress psi; Sy-rated minimum yield stress of the bolt material psi The bolt stress determination shall consider all loads acting on the bolt, including pressure acting on the sealing surface, gasket load and any additional mechanical and thermal loads.
303.4 Other Parts
All other pressure-containing parts shall be designed to meet the manufacturer's written performance characteristics and the conditions of use in this specification. The manufacturer shall specify that the methods used in the design shall be consistent with the engineering practices adopted
304 Various Design Data
304.1 Overview. The end and outlet connections shall be integral with the valve body or welded in accordance with the requirements of this specification. 304.2 Dimensional requirements. The dimensional tolerances of components or secondary parts shall be such that the additional tolerance does not exceed the reasonable operating range of the SSV/USV. All components shall be dimensionally checked to ensure that they are within the reasonable operating range and meet the design specifications. 304.3 Bolted connections
(1) End and outlet bolted connections
(a) Centering of holes. The bolt holes of the end and outlet shall be evenly distributed on the same center circle. (b) Stud bolts. The length of the thread of the stud bolt screwed into the valve body shall be at least one time the outer diameter of the bolt. (2) Other bolted connections. The method of tightening the stud bolt thread shall be designed to withstand a tensile load equivalent to that transmitted to the bolt through a fully engaged nut.
. For Class 4 valves, the bonnet bolt material shall comply with the requirements of API Spec 6A. (3) Bonnet bolting.
304.4 Test, vent, injection and instrumentation connections. Test, vent, injection and instrumentation connections shall comply with API Spec6A requirements for all designs and associated equipment.
304.5 Operating positions. SSV/USVs shall be designed to operate adequately in all possible installation positions when installed and maintained in accordance with the manufacturer's operating manual:
304.6 Reduced-opening SSV/USV valve orifices. Reduced-opening SSV/USV valves are customarily manufactured in regular and venturi styles, both of which may have a circular or substantially rectangular orifice through the valve plug or gate. There is no sizing requirement for these SSV/USV valves, however, the orifice through the valve plug shall be aligned with the orifice through the SSV/USV body, and flow shall be smooth when the valve is fully open.
The reduced-opening USV flow orifice should be sized after considering the flow line (TFL) operation. 304.7 Grease or sealant. If the SSV/USV valve body or valve stem requires grease or sealing grease, it should be installed without reducing the internal pressure of the SSV/USV valve.2 Temperature Ratings
Temperature Class
302.4 SSV/USV Actuators
Fahrenheit (°F)
Celsius (°C)
Equipment shall be designed to operate at the minimum and maximum temperatures of the various specified temperature classes, as shown in Table 302.2302.4a Temperature Class
.
The minimum temperature is the lowest ambient temperature in which the equipment operatesThe maximum temperature is the highest temperature of the fluid enclosed by the equipment. 302.4b Low Temperature. For temperature classes of -29°C (-20°F) and below, pressure-containing metal parts shall be made of materials having a hardness as shown in Tables 403.3 and 403.4.
302.4c Pressure Class. SSV/USV actuators covered by this specification shall be designed by the manufacturer for a pressure class not exceeding 138.0 MPa (20,000 psi). The pressure class shall apply to the parts subjected to pressure at the rated temperature. 303 Design Methods
303.1 Flanges
API flanges have been designed in accordance with the design criteria and methods established by the API Valves and Wellhead Equipment Standardization Committee (C6). 303.2 Valve Bodies and Bonnets
Valve bodies and bonnets shall be designed in accordance with one or more of the following methods. Note: When the stress values calculated by these methods exceed the allowable stress values, these stress values must be calculated by other industry-recognized methods. Fatigue analysis and local load stress analysis are beyond the scope of this specification. 303.2aASME. The design methods described in Section 2, Recital 4, Chapter 8 of the ASME Boiler and Pressure Vessel Code can be used to calculate pressure equipment. The design allowable stress shall be limited by the following criteria: S,=0.83Sy
SM=2Sv/3
SY/T10006—2000
Where: Sm-design stress intensity at rated working pressure psi; S,-maximum basic membrane stress intensity allowed in hydrostatic test psi; Sy-minimum rated yield strength of material psi. 303.2b Deformation energy theory The deformation energy theory method can be used for design calculation of pressure equipment. The basic pressure vessel wall thickness can be determined in combination with the three-dimensional stress of the hydrostatic test and is limited by the following criteria: Sg=Sy
Where: S-maximum allowable equivalent stress calculated by deformation energy theory method psi; Sy-minimum rated yield strength of material pai. 303.2c Test stress analysis. Test stress analysis is described in Appendix 6 of Chapter 8, Section 2 of ASME Boiler and Pressure Vessel Code. 303.2d Verification test analysis. The verification test is described in ASME Boiler and Pressure Vessel Code, Chapter 8, Section 1, UG-101. 303.3 Bolted Connections
The allowable tensile stress of bolts shall be determined by considering the initial tightening, rated working pressure and hydrostatic test pressure. The bolt stress based on the cross-sectional area of the thread root shall not exceed the following limit: SA-0.83S
Where: S-maximum allowable tensile stress psi; Sy-rated minimum yield stress of the bolt material psi The bolt stress determination shall consider all loads acting on the bolt, including pressure acting on the sealing surface, gasket load and any additional mechanical and thermal loads.
303.4 Other Parts
All other pressure-containing parts shall be designed to meet the manufacturer's written performance characteristics and the conditions of use in this specification. The manufacturer shall specify that the methods used in the design shall be consistent with the engineering practices adopted
304 Various Design Data
304.1 Overview. The end and outlet connections shall be integral with the valve body or welded in accordance with the requirements of this specification. 304.2 Dimensional requirements. The dimensional tolerances of components or secondary parts shall be such that the additional tolerance does not exceed the reasonable operating range of the SSV/USV. All components shall be dimensionally checked to ensure that they are within the reasonable operating range and meet the design specifications. 304.3 Bolted connections
(1) End and outlet bolted connections
(a) Centering of holes. The bolt holes of the end and outlet shall be evenly distributed on the same center circle. (b) Stud bolts. The length of the thread of the stud bolt screwed into the valve body shall be at least one time the outer diameter of the bolt. (2) Other bolted connections. The method of tightening the stud bolt thread shall be designed to withstand a tensile load equivalent to that transmitted to the bolt through a fully engaged nut.
. For Class 4 valves, the bonnet bolt material shall comply with the requirements of API Spec 6A. (3) Bonnet bolting.
304.4 Test, vent, injection and instrumentation connections. Test, vent, injection and instrumentation connections shall comply with API Spec6A requirements for all designs and associated equipment.
304.5 Operating positions. SSV/USVs shall be designed to operate adequately in all possible installation positions when installed and maintained in accordance with the manufacturer's operating manual:
304.6 Reduced-opening SSV/USV valve orifices. Reduced-opening SSV/USV valves are customarily manufactured in regular and venturi styles, both of which may have a circular or substantially rectangular orifice through the valve plug or gate. There is no sizing requirement for these SSV/USV valves, however, the orifice through the valve plug shall be aligned with the orifice through the SSV/USV body, and flow shall be smooth when the valve is fully open.
The reduced-opening USV flow orifice should be sized after considering the flow line (TFL) operation. 304.7 Grease or sealant. If the SSV/USV valve body or valve stem requires grease or sealing grease, it should be installed without reducing the internal pressure of the SSV/USV valve.2 Temperature Ratings
Temperature Class
302.4 SSV/USV Actuators
Fahrenheit (°F)
Celsius (°C)
Equipment shall be designed to operate at the minimum and maximum temperatures of the various specified temperature classes, as shown in Table 302.2302.4a Temperature Class
.
The minimum temperature is the lowest ambient temperature in which the equipment operatesThe maximum temperature is the highest temperature of the fluid enclosed by the equipment. 302.4b Low Temperature. For temperature classes of -29°C (-20°F) and below, pressure-containing metal parts shall be made of materials having a hardness as shown in Tables 403.3 and 403.4.
302.4c Pressure Class. SSV/USV actuators covered by this specification shall be designed by the manufacturer for a pressure class not exceeding 138.0 MPa (20,000 psi). The pressure class shall apply to the parts subjected to pressure at the rated temperature. 303 Design Methods
303.1 Flanges
API flanges have been designed in accordance with the design criteria and methods established by the API Valves and Wellhead Equipment Standardization Committee (C6). 303.2 Valve Bodies and Bonnets
Valve bodies and bonnets shall be designed in accordance with one or more of the following methods. Note: When the stress values calculated by these methods exceed the allowable stress values, these stress values must be calculated by other industry-recognized methods. Fatigue analysis and local load stress analysis are beyond the scope of this specification. 303.2aASME. The design methods described in Section 2, Recital 4, Chapter 8 of the ASME Boiler and Pressure Vessel Code can be used to calculate pressure equipment. The design allowable stress shall be limited by the following criteria: S,=0.83Sy
SM=2Sv/3
SY/T10006—2000
Where: Sm-design stress intensity at rated working pressure psi; S,-maximum basic membrane stress intensity allowed in hydrostatic test psi; Sy-minimum rated yield strength of material psi. 303.2b Deformation energy theory The deformation energy theory method can be used for design calculation of pressure equipment. The basic pressure vessel wall thickness can be determined in combination with the three-dimensional stress of the hydrostatic test and is limited by the following criteria: Sg=Sy
Where: S-maximum allowable equivalent stress calculated by deformation energy theory method psi; Sy-minimum rated yield strength of material pai. 303.2c Test stress analysis. Test stress analysis is described in Appendix 6 of Chapter 8, Section 2 of ASME Boiler and Pressure Vessel Code. 303.2d Verification test analysis. The verification test is described in ASME Boiler and Pressure Vessel Code, Chapter 8, Section 1, UG-101. 303.3 Bolted Connections
The allowable tensile stress of bolts shall be determined by considering the initial tightening, rated working pressure and hydrostatic test pressure. The bolt stress based on the cross-sectional area of the thread root shall not exceed the following limit: SA-0.83S
Where: S-maximum allowable tensile stress psi; Sy-rated minimum yield stress of the bolt material psi The bolt stress determination shall consider all loads acting on the bolt, including pressure acting on the sealing surface, gasket load and any additional mechanical and thermal loads.
303.4 Other Parts
All other pressure-containing parts shall be designed to meet the manufacturer's written performance characteristics and the conditions of use in this specification. The manufacturer shall specify that the methods used in the design shall be consistent with the engineering practices adopted
304 Various Design Data
304.1 Overview. The end and outlet connections shall be integral with the valve body or welded in accordance with the requirements of this specification. 304.2 Dimensional requirements. The dimensional tolerances of components or secondary parts shall be such that the additional tolerance does not exceed the reasonable operating range of the SSV/USV. All components shall be dimensionally checked to ensure that they are within the reasonable operating range and meet the design specifications. 304.3 Bolted connections
(1) End and outlet bolted connections
(a) Centering of holes. The bolt holes of the end and outlet shall be evenly distributed on the same center circle. (b) Stud bolts. The length of the thread of the stud bolt screwed into the valve body shall be at least one time the outer diameter of the bolt. (2) Other bolted connections. The method of tightening the stud bolt thread shall be designed to withstand a tensile load equivalent to that transmitted to the bolt through a fully engaged nut.
. For Class 4 valves, the bonnet bolt material shall comply with the requirements of API Spec 6A. (3) Bonnet bolting.
304.4 Test, vent, injection and instrumentation connections. Test, vent, injection and instrumentation connections shall comply with API Spec6A requirements for all designs and associated equipment.
304.5 Operating positions. SSV/USVs shall be designed to operate adequately in all possible installation positions when installed and maintained in accordance with the manufacturer's operating manual:
304.6 Reduced-opening SSV/USV valve orifices. Reduced-opening SSV/USV valves are customarily manufactured in regular and venturi styles, both of which may have a circular or substantially rectangular orifice through the valve plug or gate. There is no sizing requirement for these SSV/USV valves, however, the orifice through the valve plug shall be aligned with the orifice through the SSV/USV body, and flow shall be smooth when the valve is fully open.
The reduced-opening USV flow orifice should be sized after considering the flow line (TFL) operation. 304.7 Grease or sealant. If the SSV/USV valve body or valve stem requires grease or sealing grease, it should be installed without reducing the internal pressure of the SSV/USV valve.4 Other Parts
All other pressure-containing parts shall be designed to meet the manufacturer's written performance characteristics and the conditions of use in this specification. The manufacturer shall specify that the methods used in the design shall be consistent with the engineering practices adopted.
304 Various Design Information
304.1 General. End and outlet connections shall be integral with the valve body or welded in accordance with the requirements of this specification. 304.2 Dimensional Requirements. The dimensional tolerances of components or secondary parts shall be such that the additional tolerances do not exceed the reasonable operating range of the SSV/USV. All components shall be dimensional checked to ensure that they are within the reasonable operating range and meet the design specifications. 304.3 Bolted Connections
(1) End and Outlet Bolted Connections
(a) Alignment of holes. The bolt holes of the end and outlet shall be evenly distributed on the same center circle. (b) Studs. The length of the thread of the studs screwed into the valve body shall be at least one time the outside diameter of the bolt. (2) Other bolted connections. The method of thread tightening of stud bolts shall be designed to withstand a tensile load equivalent to that transmitted to the bolts through a fully engaged nut.
. For Class 4 valves, the bonnet bolting material shall comply with the requirements of API Spec 6A. (3) Bonnet bolting.
304.4 Test, venting, injection and instrument connection interfaces. Test, venting, injection and instrument connection interfaces shall comply with the requirements of API Spec 6A for all designs and ancillary equipment.
304.5 Operating orientation. SSV/USV shall be designed to be fully operational in all possible installation positions when installed and maintained in accordance with the manufacturer's operating manual:
304.6 Reduced opening SSV/USV valve hole. Reduced opening SSV/USV valves are customarily manufactured in regular and venturi types, both of which may have a circular hole or a substantially rectangular hole through the valve plug or valve gate. There is no sizing requirement for these SSV/USV valves, however, the hole through the valve plug should be aligned with the hole through the SSV/USV body to provide smooth flow when the valve is fully open.
The reduced opening USV flow hole should be sized after considering the flow line (TFL) operation. 304.7 Grease or sealant. If grease or sealant is required for the SSV/USV body or stem, it should be used without reducing the internal pressure of the SSV/USV valve.4 Other Parts
All other pressure-containing parts shall be designed to meet the manufacturer's written performance characteristics and the conditions of use in this specification. The manufacturer shall specify that the methods used in the design shall be consistent with the engineering practices adopted.
304 Various Design Information
304.1 General. End and outlet connections shall be integral with the valve body or welded in accordance with the requirements of this specification. 304.2 Dimensional Requirements. The dimensional tolerances of components or secondary parts shall be such that the additional tolerances do not exceed the reasonable operating range of the SSV/USV. All components shall be dimensional checked to ensure that they are within the reasonable operating range and meet the design specifications. 304.3 Bolted Connections
(1) End and Outlet Bolted Connections
(a) Alignment of holes. The bolt holes of the end and outlet shall be evenly distributed on the same center circle. (b) Studs. The length of the thread of the studs screwed into the valve body shall be at least one time the outside diameter of the bolt. (2) Other bolted connections. The method of thread tightening of stud bolts shall be designed to withstand a tensile load equivalent to that transmitted to the bolts through a fully engaged nut.
. For Class 4 valves, the bonnet bolting material shall comply with the requirements of API Spec 6A. (3) Bonnet bolting.
304.4 Test, venting, injection and instrument connection interfaces. Test, venting, injection and instrument connection interfaces shall comply with the requirements of API Spec 6A for all designs and ancillary equipment.
304.5 Operating orientation. SSV/USV shall be designed to be fully operational in all possible installation positions when installed and maintained in accordance with the manufacturer's operating manual:
304.6 Reduced opening SSV/USV valve hole. Reduced opening SSV/USV valves are customarily manufactured in regular and venturi types, both of which may have a circular hole or a substantially rectangular hole through the valve plug or valve gate. There is no sizing requirement for these SSV/USV valves, however, the hole through the valve plug should be aligned with the hole through the SSV/USV body to provide smooth flow when the valve is fully open.
The reduced opening USV flow hole should be sized after considering the flow line (TFL) operation. 304.7 Grease or sealant. If grease or sealant is required for the SSV/USV body or stem, it should be used without reducing the internal pressure of the SSV/USV valve.
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