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SY/T 0042-2002 Standard for economic calculation methods of anti-corrosion engineering

Basic Information

Standard ID: SY/T 0042-2002

Standard Name: Standard for economic calculation methods of anti-corrosion engineering

Chinese Name: 防腐蚀工程经济计算方法标准

Standard category:Oil and gas industry standards (SY)

state:in force

Date of Release2002-05-28

Date of Implementation:2002-08-01

standard classification number

Standard ICS number:Petroleum and related technologies >> 75.020 Exploration and processing of petroleum and natural gas

Standard Classification Number:>>>>E1 Engineering Construction>>Raw Materials Industry, Communications, Broadcasting Engineering>>P71 Petroleum Engineering

associated standards

alternative situation:SYJ 42-1989

Publication information

publishing house:Petroleum Industry Press

other information

Publishing department:State Economic and Trade Commission

Introduction to standards:

This standard is applicable to the economic comparison of schemes in new construction, renovation, expansion and overhaul projects in the petroleum and natural gas industry. SY/T 0042-2002 Standard for economic calculation methods of anti-corrosion engineering SY/T0042-2002 Standard download decompression password: www.bzxz.net

Some standard content:

Calculation standard of economidappraisals for corrosion control projectSY/T 0042-2002
Replaces SYJ42-89
Editor: China National Petroleum Corporation Planning Institute Approval Department: State Economic and Trade Commission Petroleum Industry Press
2002 Beijing
Terms and symbols
3 Scheme comparison method
4 Basic calculation formula
5 Calculation items and calculation formula
Appendix A Present value coefficient table and annuity present value coefficient table Appendix B Calculation examples
Standard terms and terminology
Appendix Anti-corrosion Engineering Economic Calculation Method Clause Explanation 2
Announcement of the State Economic and Trade Commission of the People's Republic of China
No. 32 of 2002
Announcement of 78 petroleum industry standards
The State Economic and Trade Commission approved 78 petroleum industry standards, which are hereby announced and implemented from August 1, 2002.
The above standards are published and distributed by Petroleum Industry Press. Appendix: Names and numbers of 78 petroleum industry standards State Economic and Trade Commission of the People's Republic of China May 28, 2002
Appendix:
Names and numbers of 78 petroleum industry standards
Standard name
Standard number
Replacement of standard number
Economic calculation of anti-corrosion engineering SY/T 0042—2002 SYJI 42-89 Method
Oil and gas field engineering survey specificationSY/I0054—2002SY.T0054--93 Fire dike design specification for oil tank areaSY/0075—2002SY0075—93 Specification
Electroglass lining for steel storage tankSY/T0326-2002GRP technical standard
Polyethylene for buried steel pipelineSY/T0413—2002SY/T4013—95 Anticorrosion layer technical standard
Petroleum and natural gas metal PipelineSY/T0452-2002SY4052-92 Welding process assessment
Oil and gas pipeline steel butt-welded pipeSY/T0518--2002SY/T0518--92 Design code
Seismic detector part 3SY/F5046.3-2002 Eddy current geophone
Seismic detector part 4SY/F5046.4-2002 Moving coil acceleration detector
Cutter for drilling and repairing wells
SY/T 5070—2002 SY 507091
SY 5424—91
SY/T5688--95
Standard name
Standard number
Replacement standard number
Items for evaluating wellbore qualitySY/T5088—2002SY/T5088—93 and calculation method
Sulfonated lignite for drilling fluidSY/I5092—2002SY/T5092--9312
13 Specifications for wellhead equipment and Christmas treesSY/T5127-2002SY5127-92 Specifications
SY 5279.1--91
SY 5279.2-91
SY 5279.3—91
SY 5156—93
14, Centrifugal turbine for oil drilling rigSY/T5141—2002SY/T514193
Hydraulic torque converter
15Metallic element atoms in rocksSY5161—2002SY5161—87Absorption spectrum determination method
Drill string conversion joint
SY/T 52002002 SY 5200—93
Natural gamma spectrum of rock samplesSY/T5252—2002SY/T5252—91Analysis method
Eccentric water distribution tool
Oil transfer arm for port loading and unloading
SY/T 5253—91
SY/T5275--2002 SY 5275--91
SY/I5298--2002SY/T5298—-91
Onshore seismic exploration data collectionSY/5314--2002SY/5314---95CollectionQuality inspection and acceptance
Percussion wellbore coring technologySY/I5326—2002$Y/T5326—93Procedure
Sesbania gum for fracturing
SY/I 5605—93
SY/T5341—2002SY/T5341--88
Standard name
Standard number
Replacement standard number
Reservoir sensitivity flow testSY/T5358—2002SY/T5358-94Evaluation method
Expandable packer
Special coring tool
Petroleum repair winch
Winch for oil drilling rig
SY/T 5404—2002 SY/T 5404-91SY/ 5414—2002 SY 5414—91
SY/T 6200---1996
SY /I 5470--2002 SY 5470--92SY/T5532--2002SY/T5532--92
DS series for oil drilling rigSY/T5533--2002SY/T5533--92Electromagnetic eddy current brake
Specification for commissioning of crude oil pipelineSY/T5536--2002SY/T5536--92Specification
Analysis method of fluid physical properties in condensate gas reservoirSY/T 5543--2002 SY/T 5543--92
Single screw oil well pump
SY/T 5549-2002 SY 554992
Open hole well, casing lifting and testingSY/T 5600--2002 SY/I SY/T5600-93 Operation Technical Specifications SY/T5606--93 SY/T5604--93 Cable Conveyed Perforating Construction Technical Specifications and Quality Assessment SY/T5604--93 SY/T5604--93 SY/T5710-2002 SY/T5712--95 Oil Test Tool Performance Inspection Technical Specifications SY/T 5710--95 SY/T5751--2002 SY/T5751--1995 SY/T5751--1995 SY/T5767--2002 SY/T 5767—1995SY/T 588793
Controlled source acoustic magnetotelluricSY/T5772—2002SY/T5772—1995Technical specification for exploration
Technical specification for seismic exploration and measurement in mountainous areasSY/T5775--2002SY/T5775—1995
Injection and production profile loggingSY/T5783—2002SY/T 5783—9339
Data interpretation procedures
Casing shaping and sealing reinforcementSY/I5790—2002SY/T5790—93Technology practice
Ground gravity exploration technical specificationsSY/T5819-2002SY/T5819—93Program
Sucker rod centralizer
SY/T 58322002 SY/T 583293
Economic effect evaluation method of chemical plugging removal in oil and water wellsSYI5849—2002 SY/I 5849-93
Labor quota of gas production project
Labor quota of gas transmission project
SY/ 58962002 SY/I 5896-93
SY/F 58972002 SY/T 5897-93
46 Polyacrylamide for drilling fluidSY/T5946-2002SY/T5946-94 Potassium salt
47 Petroleum gravity, magnetic, electricalSY/T 6055-2002 SY/I 6055-94 method, geochemical prospecting map
Standard name
Standard number
Replacement standard number
Thermophysical parameters of formation rockSY/T6107--2002.SY/I6107-1994 Determination method
Carbonate gas reservoir development SY/T6110-2002 SY/T6110-94 Quality characteristics description
Natural gas pipeline trial operation SY/T 6233-2002 SYT 6233-I996 specification
Full-size test method for oil well pipeSY/T6238.2-2002 methodOn oil and casing threads
Break test
Requirements for labor protection equipment in petroleum industry workplaceSY/T6524-2002
Recommended method for foam drainage and gas productionSY/T6525-2002 method
Determination method for reaction rate of hydrochloric acid and magnetic carbonate rockSYT6526-2002
Quality specification for original data of electrical and acoustic imaging loggingSY/T6527-2002
Method for measuring dielectric constant of macro sample5YT 6528-2002 method
Crude oil depot fixed fire protection systemSY/T6529--2002 system operation specification
Non-corrosive gas transportationSY/I6530-200258
Pipeline inner coating
Straight seam resistanceSY/R6531-2002 welded steel pipe for oil well pump body
Standard name
Standard push number
Calibration method of induced polarization instrumentSY/I6532--2002 Stable well test test and interpretationSY/T6533--2002 method
Twin screw oil and gas mixed transmission pump
High pressure gas underground gas storage well
SY/T 65342002
SY/T 6535—2002
Technical specification for cathodic protection of inner wall of steel water tankSY/T6536—2002
Analysis method of gas and solutionSYT6537-2002 in natural gas purification plant
Formulated selective desulfurization solventSY/T6538-2002
BOX seismic data acquisitionSY/T6539-2002 System inspection items and technology
Indoor evaluation method of oil layer damaged by drilling fluid and completion fluidSY/I6540—2002||tt ||Planning, design and construction of fixed offshore platforms SY/T10009-69
Recommended practices for design and construction 2002
Method-Load resistance coefficient
Design method (Supplement 1)
Offshore oil L-engineering drawing specification SY/T10028-
Planning, design and construction of fixed offshore platforms SY/T10030-Recommended practices for design and construction 2002
Method-Working stress design
Method (Supplement 1)
Replacement standard number
SY/T 10009---
SY/T 10030-
Standard name
Specification for submarine pipeline systems
Standard number
SY/T 10037-
Recommended Practice for Offshore Fixed Platform Helicopter Site Planning, Design and Construction 2002
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Recommended Practice
Recommendations for the design and installation of offshore production platform piping systemsSY/T10042-76
Guidelines for pressure relief and decompression systemsSY/T10043-2002
Recommended Practice for Sizing, Selection and Installation of Refinery Pressure Relief DevicesSY/T10044-2002
Replacement Standard Number
SY/T 4804—-92
SY/T 480692
SY/T 4811—92
SY/T 480992
SY/T 481292
According to the plan of the document No. 33 of China National Petroleum Corporation (98) Zhongyou Jijian, China National Petroleum Corporation Planning and Design Institute is responsible for revising the "Economic Calculation Methods for Anti-Corrosion Engineering" SYJ42-89. This revision is in accordance with the relevant requirements of the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the State Planning Commission and the Ministry of Construction, and refers to the "Corrosion Economics Report" recently released by the International Association of Corrosion Engineers (NACE International) T3 and the relevant contents of NACE P0272-72 "Direct Calculation Method for Economic Evaluation of Corrosion Control Measures", and draws on the experience of my country's petroleum industry in this application to revise SYJ42-89.
This revision has made major changes to Chapter 3, Chapter 4, and Chapter 5. In Chapter 4 and Chapter 5, reference is made to the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the National Development and Reform Commission and the Ministry of Construction, and the "Corrosion Economics" report recently released by the National Association for Corrosion Engineering (NACF International) and NACERP0272-72 "Direct Calculation Methods for Economic Evaluation of Corrosion Control Measures". The calculation formulas are appropriately modified to make them easier to use. In the examples in the appendix, one example in SYJ42-89 is retained, and two new examples are added. At the same time, the contents of Appendix 1 and Appendix 2 in SYJ42-89 are placed in Chapter 2 of this standard. The design would like to thank the Sichuan Petroleum Design Institute of China National Petroleum Corporation for its support and help in providing actual calculation example data.
This standard was proposed by China National Petroleum Corporation. This standard was assigned to the Planning Institute of China National Petroleum Corporation. The Planning Institute of China National Petroleum Corporation is responsible for the interpretation of this standard. This standard will replace SY42-89 from the date of entry into force. The drafting unit of this standard is China National Petroleum Corporation. The main drafters of this standard are Lu Qimin and Yan Ming. The previous versions of the standards replaced by this standard are: -SYJ42--89.SY/T6524-2002 Method for testing the thread of oil and casing
Break test
Requirements for equipment of labor protection equipment in petroleum industry workplaces
Recommended foam drainage gas production SY/T6525-2002 Method
Method for determining the reaction rate of hydrochloric acid and magnetic carbonate rocks SYT6526-2002
Quality specification of original data of electrical and acoustic imaging logging SY/T6527-2002
Method for measuring the dielectric constant of macro samples 5YT 6528-2002 method
Crude oil depot fixed fire protection systemSY/T6529--2002 system operation specification
Non-corrosive gas transportationSY/I6530-200258
Pipeline inner coating
Straight seam resistanceSY/R6531-2002 welded steel pipe for oil well pump body
Standard name
Standard push number
Calibration method of induced polarization instrumentSY/I6532--2002 Stable well test test and interpretationSY/T6533--2002 method
Twin screw oil and gas mixed transmission pump
High pressure gas underground gas storage well
SY/T 65342002
SY/T 6535—2002
Technical specification for cathodic protection of inner wall of steel water tankSY/T6536—2002Www.bzxZ.net
Analysis method of gas and solutionSYT6537-2002 in natural gas purification plant
Formulated selective desulfurization solventSY/T6538-2002
BOX seismic data acquisitionSY/T6539-2002 System inspection items and technology
Indoor evaluation method of oil layer damaged by drilling fluid and completion fluidSY/I6540—2002||tt ||Planning, design and construction of fixed offshore platforms SY/T10009-69
Recommended practices for design and construction 2002
Method-Load resistance coefficient
Design method (Supplement 1)
Offshore oil L-engineering drawing specification SY/T10028-
Planning, design and construction of fixed offshore platforms SY/T10030-Recommended practices for design and construction 2002
Method-Working stress design
Method (Supplement 1)
Replacement standard number
SY/T 10009---
SY/T 10030-
Standard name
Specification for submarine pipeline systems
Standard number
SY/T 10037-
Recommended Practice for Offshore Fixed Platform Helicopter Site Planning, Design and Construction 2002
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Recommended Practice
Recommendations for the design and installation of offshore production platform piping systemsSY/T10042-76
Guidelines for pressure relief and decompression systemsSY/T10043-2002
Recommended Practice for Sizing, Selection and Installation of Refinery Pressure Relief DevicesSY/T10044-2002
Replacement Standard Number
SY/T 4804—-92
SY/T 480692
SY/T 4811—92
SY/T 480992
SY/T 481292
According to the plan of the document No. 33 of China National Petroleum Corporation (98) Zhongyou Jijian, China National Petroleum Corporation Planning and Design Institute is responsible for revising the "Economic Calculation Methods for Anti-Corrosion Engineering" SYJ42-89. This revision is in accordance with the relevant requirements of the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the State Planning Commission and the Ministry of Construction, and refers to the "Corrosion Economics Report" recently released by the International Association of Corrosion Engineers (NACE International) T3 and the relevant contents of NACE P0272-72 "Direct Calculation Method for Economic Evaluation of Corrosion Control Measures", and draws on the experience of my country's petroleum industry in this application to revise SYJ42-89.
This revision has made major changes to Chapter 3, Chapter 4, and Chapter 5. In Chapter 4 and Chapter 5, reference is made to the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the National Development and Reform Commission and the Ministry of Construction, and the "Corrosion Economics" report recently released by the National Association for Corrosion Engineering (NACF International) and NACERP0272-72 "Direct Calculation Methods for Economic Evaluation of Corrosion Control Measures". The calculation formulas are appropriately modified to make them easier to use. In the examples in the appendix, one example in SYJ42-89 is retained, and two new examples are added. At the same time, the contents of Appendix 1 and Appendix 2 in SYJ42-89 are placed in Chapter 2 of this standard. The design would like to thank the Sichuan Petroleum Design Institute of China National Petroleum Corporation for its support and help in providing actual calculation example data.
This standard was proposed by China National Petroleum Corporation. This standard was assigned to the Planning Institute of China National Petroleum Corporation. The Planning Institute of China National Petroleum Corporation is responsible for the interpretation of this standard. This standard will replace SY42-89 from the date of entry into force. The drafting unit of this standard is China National Petroleum Corporation. The main drafters of this standard are Lu Qimin and Yan Ming. The previous versions of the standards replaced by this standard are: -SYJ42--89.SY/T6524-2002 Method for testing the thread of oil and casing
Break test
Requirements for equipment of labor protection equipment in petroleum industry workplaces
Recommended foam drainage gas production SY/T6525-2002 Method
Method for determining the reaction rate of hydrochloric acid and magnetic carbonate rocks SYT6526-2002
Quality specification of original data of electrical and acoustic imaging logging SY/T6527-2002
Method for measuring the dielectric constant of macro samples 5YT 6528-2002 method
Crude oil depot fixed fire protection systemSY/T6529--2002 system operation specification
Non-corrosive gas transportationSY/I6530-200258
Pipeline inner coating
Straight seam resistanceSY/R6531-2002 welded steel pipe for oil well pump body
Standard name
Standard push number
Calibration method of induced polarization instrumentSY/I6532--2002 Stable well test test and interpretationSY/T6533--2002 method
Twin screw oil and gas mixed transmission pump
High pressure gas underground gas storage well
SY/T 65342002
SY/T 6535—2002
Technical specification for cathodic protection of inner wall of steel water tankSY/T6536—2002
Analysis method of gas and solutionSYT6537-2002 in natural gas purification plant
Formulated selective desulfurization solventSY/T6538-2002
BOX seismic data acquisitionSY/T6539-2002 System inspection items and technology
Indoor evaluation method of oil layer damaged by drilling fluid and completion fluidSY/I6540—2002||tt ||Planning, design and construction of fixed offshore platforms SY/T10009-69
Recommended practices for design and construction 2002
Method-Load resistance coefficient
Design method (Supplement 1)
Offshore oil L-engineering drawing specification SY/T10028-
Planning, design and construction of fixed offshore platforms SY/T10030-Recommended practices for design and construction 2002
Method-Working stress design
Method (Supplement 1)
Replacement standard number
SY/T 10009---
SY/T 10030-
Standard name
Specification for submarine pipeline systems
Standard number
SY/T 10037-
Recommended Practice for Offshore Fixed Platform Helicopter Site Planning, Design and Construction 2002
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||| Recommended Practice
Recommendations for the design and installation of offshore production platform piping systemsSY/T10042-76
Guidelines for pressure relief and decompression systemsSY/T10043-2002
Recommended Practice for Sizing, Selection and Installation of Refinery Pressure Relief DevicesSY/T10044-2002
Replacement Standard Number
SY/T 4804—-92
SY/T 480692
SY/T 4811—92
SY/T 480992
SY/T 481292
According to the plan of the document No. 33 of China National Petroleum Corporation (98) Zhongyou Jijian, China National Petroleum Corporation Planning and Design Institute is responsible for revising the "Economic Calculation Methods for Anti-Corrosion Engineering" SYJ42-89. This revision is in accordance with the relevant requirements of the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the State Planning Commission and the Ministry of Construction, and refers to the "Corrosion Economics Report" recently released by the International Association of Corrosion Engineers (NACE International) T3 and the relevant contents of NACE P0272-72 "Direct Calculation Method for Economic Evaluation of Corrosion Control Measures", and draws on the experience of my country's petroleum industry in this application to revise SYJ42-89.
This revision has made major changes to Chapter 3, Chapter 4, and Chapter 5. In Chapter 4 and Chapter 5, reference is made to the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the National Development and Reform Commission and the Ministry of Construction, and the "Corrosion Economics" report recently released by the National Association for Corrosion Engineering (NACF International) and NACERP0272-72 "Direct Calculation Methods for Economic Evaluation of Corrosion Control Measures". The calculation formulas are appropriately modified to make them easier to use. In the examples in the appendix, one example in SYJ42-89 is retained, and two new examples are added. At the same time, the contents of Appendix 1 and Appendix 2 in SYJ42-89 are placed in Chapter 2 of this standard. The design would like to thank the Sichuan Petroleum Design Institute of China National Petroleum Corporation for its support and help in providing actual calculation example data.
This standard was proposed by China National Petroleum Corporation. This standard was assigned to the Planning Institute of China National Petroleum Corporation. The Planning Institute of China National Petroleum Corporation is responsible for the interpretation of this standard. This standard will replace SY42-89 from the date of entry into force. The drafting unit of this standard is China National Petroleum Corporation. The main drafters of this standard are Lu Qimin and Yan Ming. The previous versions of the standards replaced by this standard are: -SYJ42--89.481292
According to the plan of the document No. 33 of China National Petroleum Corporation (98) Zhongyou Jijianzi, China National Petroleum Corporation Planning Institute is responsible for revising the "Economic Calculation Methods for Anti-corrosion Engineering" SYJ42-89. This revision is in accordance with the relevant requirements of the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the State Planning Commission and the Ministry of Construction, and refers to the "Corrosion Economics Report" recently issued by the International Association of Corrosion Engineers (NACE International) T3 and the relevant contents of NACE P0272-72 "Direct Calculation Methods for Economic Evaluation of Corrosion Control Measures", and draws on the experience of my country's petroleum industry in this application, and SYJ42-89 has been revised.
This revision has made major changes to Chapter 3, Chapter 4, and Chapter 5. In Chapter 4 and Chapter 5, reference is made to the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the State Planning Commission and the Ministry of Construction and the "Corrosion Economics Report" recently issued by the International Association of Corrosion Engineers (NACE International) T3 and the "Direct Calculation Methods for Economic Evaluation of Corrosion Control Measures" (NACFI International). )T3 Recently released "Corrosion Economics" report and NACERP0272-72 "Corrosion Control Measures Economic Evaluation Direct Calculation Method", the calculation formula has been appropriately modified to make it easier to use. In the attached calculation example, one calculation example in SYJ42-89 is retained, and two new calculation examples are added. At the same time, the contents of Appendix 1 and Appendix 2 in SYJ42-89 are placed in the second section of this standard. Special thanks to Sichuan Petroleum Design Institute of China National Petroleum Corporation for its support and help in providing actual calculation example data. This standard is proposed by China National Petroleum Corporation. This standard is interpreted by China National Petroleum Corporation Planning Institute. This standard will replace SY42-89 from the date of entry into force. The drafting unit of this standard is China National Petroleum Corporation Planning Institute. The main drafters of this standard are Lu Qimin and Yan Ming. The previous versions of the standards replaced by this standard are: -SYJ42-89.481292
According to the plan of the document No. 33 of China National Petroleum Corporation (98) Zhongyou Jijianzi, China National Petroleum Corporation Planning Institute is responsible for revising the "Economic Calculation Methods for Anti-corrosion Engineering" SYJ42-89. This revision is in accordance with the relevant requirements of the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the State Planning Commission and the Ministry of Construction, and refers to the "Corrosion Economics Report" recently issued by the International Association of Corrosion Engineers (NACE International) T3 and the relevant contents of NACE P0272-72 "Direct Calculation Methods for Economic Evaluation of Corrosion Control Measures", and draws on the experience of my country's petroleum industry in this application, and SYJ42-89 has been revised.
This revision has made major changes to Chapter 3, Chapter 4, and Chapter 5. In Chapter 4 and Chapter 5, reference is made to the "Economic Evaluation Methods and Parameters for Construction Projects" (Second Edition) issued by the State Planning Commission and the Ministry of Construction and the "Corrosion Economics Report" recently issued by the International Association of Corrosion Engineers (NACE International) T3 and the "Direct Calculation Methods for Economic Evaluation of Corrosion Control Measures" (NACFI International). )T3 Recently released "Corrosion Economics" report and NACERP0272-72 "Corrosion Control Measures Economic Evaluation Direct Calculation Method", the calculation formula has been appropriately modified to make it easier to use. In the attached calculation example, one calculation example in SYJ42-89 is retained, and two new calculation examples are added. At the same time, the contents of Appendix 1 and Appendix 2 in SYJ42-89 are placed in the second section of this standard. Special thanks to Sichuan Petroleum Design Institute of China National Petroleum Corporation for its support and help in providing actual calculation example data. This standard is proposed by China National Petroleum Corporation. This standard is interpreted by China National Petroleum Corporation Planning Institute. This standard will replace SY42-89 from the date of entry into force. The drafting unit of this standard is China National Petroleum Corporation Planning Institute. The main drafters of this standard are Lu Qimin and Yan Ming. The previous versions of the standards replaced by this standard are: -SYJ42-89.
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