SY 4026-1993 Petroleum Construction Engineering Quality Inspection and Assessment Standard Storage Tank Engineering
Some standard content:
Standard for Quality Inspection and Evaluation of Petroleum Construction Engineering Storage Tank Project
SY402693
Article Explanation
Petroleum Industry Press
1993·Beijing
Spherical storage tank assembly project
Spherical storage tank welding project
1000m or less vertical storage tank assembly, welding, painting and insulation engineering... (8) Vertical storage tank manufacturing project
1000m (inclusive)-10000m vertical storage tank assembly welding project 10000m (inclusive) or more vertical storage tank bottom assembly welding project 10000m (inclusive) or more vertical storage tank wall assembly welding project 10000m (inclusive) or more 00m) and above vertical storage tank tank top assembly welding project Vertical storage tank accessories installation project
Gas holder manufacturing project
Gas holder assembly welding project
Ladder, platform, railing manufacturing and installation project + painting project
Insulation project
Revision notes
According to the requirements of China National Petroleum Corporation's 927 CNPC Keyu No. 66 notice, SY4026-93 "Petroleum Construction Project Quality Inspection and Assessment Standard Tank Engineering" edited by China National Petroleum Corporation's First Construction Company and participated in the compilation of the Engineering Technology Research Institute of the Corporation was approved and issued by China National Petroleum Corporation on September 9, 1993 with CNPC Technology No. 598-.
During the compilation process, the compilers conducted a relatively extensive investigation and research in accordance with relevant national policies and guidelines, carefully summarized the practical experience of my country's storage tank engineering in quality inspection and evaluation, and widely solicited opinions from relevant units, discussed and revised it repeatedly. Finally, the Infrastructure Engineering Bureau of China National Petroleum Corporation met with relevant national units for review and finalization. The revised standard is divided into five chapters and two appendices. The main contents include spherical storage tank assembly engineering, spherical storage tank welding engineering, vertical storage tank assembly, welding, painting and insulation engineering below 10003, vertical storage tank production engineering 1000m (including 1000m) ~ 10000m vertical storage tank assembly welding engineering: 10000m (including 10000m above vertical storage tank tank bottom assembly welding engineering 10000m (including 10000m above vertical storage tank tank wall assembly welding engineering, 1000m? (including 10000m above seven vertical storage tank tank top assembly welding engineering, vertical storage tank accessory installation engineering, gas tank production engineering, gas tank assembly welding engineering ladder, platform, railing production and installation engineering painting engineering insulation engineering, etc. In the five years since the original standard was implemented, it has played a positive role in promoting petroleum engineering construction enterprises to strengthen management and ensure the quality of work. With the development of the petroleum industry development, the revision of a large number of construction acceptance specifications, the continuous emergence of new materials, new processes, new structures and other technical requirements, new national standards, procedures, and new industry standards have been continuously promulgated and implemented. In addition, the "General Rules for Quality Inspection and Assessment of Petroleum Construction Projects" has been revised, and the scoring method is also different from the original scoring method. In order to adapt to the development of the petroleum industry, it is necessary to make appropriate modifications to the original quality inspection and assessment standards for container projects used in conjunction with the general rules, so as to unify the inspection and assessment methods and basis for storage tank projects and improve the accuracy of the assessment. Considering the continuity, advancement, practicality and unity of quality and efficiency of the standard, this standard has mainly made the following modifications: First, the content related to container production and overall equipment installation in the original standard was taken out and made into a separate article, retaining only the evaluation content such as spherical storage tank installation, vertical storage tank production and installation, gas holder production and installation and its affiliated steel structure production and installation, and insulation process. Second, vertical storage tanks are divided into three levels according to their volume, that is, storage tanks below 1000m3 are divided into a comprehensive sub-project, 1000m to 10000m (excluding 10000m) are divided into a sub-project, and the sub-projects maintain the division method in the original text. Storage tanks of 10000m and above are taken as a single project, and the original sub-projects are decomposed into four sub-projects: vertical storage tank bottom welding, vertical storage tank wall welding, vertical storage tank top welding, and vertical storage tank accessory installation. Third, in the scope of application, the refinery, long hoop pipeline station and cat steam depot are added, and the various containers prefabricated in the factory are discarded, and the production of special container equipment for gas fields and the installation of the overall equipment are added. Fourth, the inspection items and measured items in the original standard are cancelled, and the basic items, allowable deviation items and their sub-items are stipulated. It is divided into three parts, which makes the inspection and evaluation further quantitative, and also stipulates the main sub-items, highlighting the important position of the main sub-items in the inspection and evaluation. In order to facilitate the majority of construction and quality inspection personnel to correctly understand and implement the provisions of this standard, the editors of this standard have compiled this revision description for reference by all relevant personnel in accordance with the unified requirements of the state for compiling revision descriptions of standards, and in the order of chapters, sections and articles of the main text.
It is hoped that all units will carefully summarize experience and accumulate information in the process of implementing this standard in combination with engineering practice. If any amendments and supplements are found, please send your opinions and relevant information to the Technology Development Department of China Petroleum and Natural Gas First Construction Company, Guanlin, Luoyang City, Henan Province (Postal Code, 471023), or the Standardization Office of the Engineering Technology Research Institute of China Petroleum and Natural Gas Corporation, No. 40, Jintang Road, Tanghuo District, Tianjin City (Postal Code: 300451), so as to provide reference for future revisions.
China Petroleum Weather First Construction Company
June 22, 1993
1 General Toilet
1.0.1 (The original standard 1.0.1 is revised on the basis of the original standard. According to the requirements of S14024-193 1.0.1 to 1.0.2, combined with the revised content of this standard, the content related to prefabricated processing tanks, containers and equipment has been removed. Emphasize the specific application scope of this standard, and add "refineries, long-distance pipeline stations and oil and gas depots, etc.". 1.0.2 The revised article of the original standard 1.0.2 is based on the original standard, and specifically lists the names of each unit project, sub-project, and sub-item project. The content of the equipment manufacturing sub-item project has been removed. The reason is that this part The spherical storage tanks and vertical storage tanks have been divided into a separate volume. The units, divisions and sub-projects of spherical storage tanks and vertical storage tanks have been refined according to the volume size, and the contents of vertical storage tanks below 1000m and 10000m and above have been added. The purpose is to facilitate the comparison of quality assessment of similar projects. A painting sub-item has also been added.
In the use of the names of sub-projects, according to the customary usage of the current specifications and the division of sub-projects, the spherical storage tank installation in the original standard has been changed to "spherical storage double assembly, and spherical storage end connection "vertical storage tank installation, gas tank installation" have been changed to "vertical storage tank assembly welding, gas cabinet assembly welding" respectively. 1.0.3 (the revised article of Article 1.0.3 of the original standard) emphasizes that when this standard is implemented, it must be combined with SY4024-93 (stone filtration construction process). It shall be implemented together with the "General Rules for Quality Inspection and Assessment Standards". 1.0.4 (Added and suppressed text)
Specifically explain the construction acceptance specifications, standards and procedures that are difficult to use with this standard. 1..5 (Added clauses)
Explain the correspondence between the quality assurance information and the main text. 1.0.6 (Added clauses)
Explain the inspection instruments used to inspect the quality of the work. 2 Spherical storage tank assembly project
2.1 Guarantee items
2.1.1 (Amended clause of Article 2.0.2 of the original standard) On the basis of the original standard, in accordance with the current standard wording habits, the "materials used for the spherical shell plates and pillars" are changed to "materials used for pressure-bearing components and pillars". The content of reviewing the manufacturing quality has been added. And the content of spherical shell manufacturing has been removed. . This article is written in accordance with Article 4.1 of GB12337-90 and Article 2.2.1 of GBJ94-86.
2.1.2 (modified article of Article 2.0.3 of the original standard) On the basis of the original standard, according to the revised scope of this specification, the content of "ultrasonic flaw detection of steel plates for spherical shell plates" is removed, and this content is controlled by the manufacturer. This article is written in accordance with Article 3.1.2 of CBJ94-86 and Article 8.1.2 of GB12337--90.
2.1.3 (modified article of Article 2.0.10 of the original standard) The measured items in the original standard are changed to guarantee items, because the thickness of the spherical tank plate is directly related to the service life and safe operation of the ball, so this item is changed to a guarantee item. This article is written based on the relevant provisions of Article 8.1.2 of GB12337--90 and Article 2.3.3 of GBJ94-86.
2.2 Basic items
2.2.1 (Added Article)
This article is added based on the relevant requirements of Article 5.3 of GB12337-90 and the actual construction site to ensure the quality of the assembly of the pillar and the spherical shell plate. The purpose is to strengthen the control of this link during the construction process and ensure the installation quality of the pillar and the spherical shell plate.
2.2.2 (Reserved Articles of Articles 3.0.9, 3.0.10, and 3.0.11 of the original standard) This article is written based on the relevant regulations of Article 3.3.2 of GBJ9486 and Article 8.2.2 of GB12337-90.
These three articles in the original standard are applicable and retained, but in this revision, the original three articles are merged into one. And "the setting of shims shall comply with the provisions of the specifications and be listed as a major sub-item: because in previous construction, some construction units were extremely careless about the construction of shims and failed to place them according to the specifications. In order to strengthen the control of this link, this item is listed as a major sub-item.
2.2.3 (the revised article of Article 3.0.14 of the original standard) is based on the original standard and adds the following contents: "No forced assembly", "No excessive damage on the surface of the spherical shell plate, and clean surface of the groove". "No strong assembly is allowed" is listed as a major sub-item, because strong assembly will increase the assembly stress of the spherical tank and affect the safe operation of the spherical tank.
This article is written in accordance with the relevant provisions of Article 8.1.2 and Article 8.2.1.1 of GB12337-90, Article 3.2.1, Article 4.4.2, Article 4.3.5 of GBJ94-86 and Articles 62 and 63 of the "Regulations on Safety Technical Supervision of Pressure Vessels". 2.3: Allowable Deviation Items
2.3.1 (modified article of Article 3.0.17 of the original standard) adds the quality index of "joint gap" on the basis of the original standard, and lists "joint misalignment" as a major sub-item, the purpose of which is to strengthen the control of assembly quality and ensure the construction quality of the spherical tank.||tt| |This standard is written in accordance with the relevant provisions of Article 3.2.2, 3.4.1 of GBJ94-86, Article 8.2.1, 8.4.2 of GB12337-90. The allowable deviation value of the misalignment amount of the interface: There are different requirements in the two standards of GBJ94-86 and GB12337-90. This standard adopts the provisions of the new standard GB12337-90. In addition, according to GB12337-90, the angular deformation in the original standard is changed to the correction angle E. 2.3.2 (the reserved provisions of Article 3.0.19 of the original standard) The original standard is applicable and is retained.
This article is written in accordance with the relevant provisions of Article 3.3.1 of GBI94-86, Article 7.2.2 of GB12337-90. ||t t||2.3.3 (modified article of Article 3.0.18 of the original standard) adds the quality index of "pillar straightness" and the position of the connecting plate on the basis of the original standard. The key is to strengthen the control of the quality of the pillar and the position of the connecting plate.
This article is written according to the relevant provisions of Article 7.2.6, Article 8.2.2 of GB12337--90, Article 2.4.1, 3.3.2, and 3.3.3 of GB94-86. 3 Spherical storage tank welding project
3.1 Guarantee items
3.1.1 (reserved article of Article 3.0.3 of the original standard) The original standard is applicable and reserved.
This article is written according to Article 8.3.3 of GB12337--90, Article 4 of GBJ94-86 .1.1.
3.1.2 (modified article of Article 3.0.2 of the original standard) adds the requirements for the qualifications of non-destructive testing personnel on the basis of the original standard. This article is written in accordance with the provisions of Article 8.3.2, Article 8.6.1 of GB1233790 and Article 4.2.1 and Article 5.2.1 of GBJ94-86. 3.1.3 (reserved article of Article 3.0.4 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with the relevant provisions of Article 4.6.1 of GB12337-m90 and Article 4.3.3 of GBJ94-86.
3.1.4 (reserved article of Article 3.0.5 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with Article 8.6 of GB12337--90 and the relevant provisions of Sections 3 and 4 of Chapter 5 of GB19486.
3.1.5 (the revised text of Article 3.0.15 of the original standard) The original standard article is an inspection item, which is now changed to a guarantee item. Because in the actual construction process, the quality of the overall heat treatment of the spherical tank after welding is directly related to the quality of the weld and the degree of stress elimination in the spherical tank, affecting the safe operation and service life of the spherical tank, so the original inspection item is changed to a guarantee item. This article is written in accordance with Article 8.8 of GB12337--90: the relevant provisions of Chapter 6 of GBJ.94-86.
3.1.6 (the reserved article of Article 3.0.7 of the original standard) The original standard article is applicable and is retained, but the word "mechanical property test" in the original article is changed to "mechanical and bending property test" according to the current standard practice. This article is written in accordance with Article 8.9 of GB1233790 and the relevant provisions of Chapter 7 of GBJ94-86.
3.1.7 (the revised article of Article 3.0.6 of the original standard) removes the "foundation settlement observation test" on the basis of the original standard. Since this standard only assesses the installation quality of the spherical tank, the "foundation settlement observation test" does not belong to the scope of inspection of this standard, so it is not listed. And according to the current standard terminology, the "pressure resistance test" is changed to "pressure test".
This article is written in accordance with Article 8.10 of GB12337-90 and the relevant provisions of Chapter 8 of GBJ94-86.
3.1.8 (the revised text of Article 3.0.8 of the original standard) changes the inspection item "There shall be no cracks on the surface of the weld and heat-affected zone" in the original standard to a guarantee item. Because cracks are a defect that has a great impact on the quality of welds, cracks are strictly prohibited in the welds and heat-affected zones of pressure vessels, so this item is changed to a guarantee item.
This article is written in accordance with the relevant provisions of Article 8.5.1 of GB12337-90 and Article 5.1.2 of GBJ94-86.
32 Basic items
3.2.1 (the revised text of Article 3.0.8 of the original standard) On the basis of the original standard, "There shall be no cracks on the surface of the weld and heat-affected zone" is listed as a guarantee item. The quality requirements for the tank surface and fillet welds have been added. This article is written based on the provisions of Article 8.5: Article 8.7 of GB12337-90, Article 4.5.1→Article 5.1.2 of GBJ94--86, 3.2.2 (Added Article)
This article is written based on the relevant provisions of Article 8.3.1, Article 8.3.4, Article 8.3.5 of GB12337--90 and Chapter 4, Section 4 of GBJ94--86. The purpose of adding this article is to strengthen the quality control of the welding process, so as to ensure the welding quality. 8
3.3 Allowable Deviation Items
3.3.1 (Amendment to Article 3.0.16 and Article 3.0.17 of the original standard) Based on the original standard, the quality index of the undercut allowable deviation item is removed, because Article 65, Item 4, Paragraph 1 of the "Regulations on Safety Technical Supervision of Pressure Vessels" clearly stipulates that "spherical pressure vessels and pressure vessels with a weld coefficient of 1.0 shall not have a large edge on the weld surface".
This article is written based on the relevant provisions of Article 3.4.1, Article 3, Article 4.2, Article 5.1.2 of GBJ94-86, Article 8.4.1, Article 8.5.2, Article 8.5.3 of GB12337-90.
The quality index of "the difference between the minimum inner diameter and the minimum inner diameter, the difference between the clearance between the two poles and the designed inner diameter" in the original article is included in the chapter of spherical storage tank assembly engineering. The purpose is to strengthen the control of this index during the assembly process to ensure the geometric size of the ball key. After welding, the sleeve should also be inspected.14) Based on the original standard, the following contents have been added: "No forced assembly", "No excessive damage on the surface of the spherical shell plate, and clean surface of the groove". "No forced assembly" is listed as a major sub-item, because forced assembly will increase the assembly stress of the spherical tank and affect the safe operation of the spherical tank.
This article is written in accordance with Article 8.1.2 and Article 8.2.1.1 of GB12337-90, Article 3.2.1, Article 4.4.2, Article 4.3.5 of GBJ94-86 and Articles 62 and 63 of the "Regulations on Safety Technical Supervision of Pressure Vessels". 2.3: Allowable deviation items
2.3.1 (the revised article of Article 3.0.17 of the original standard) Based on the original standard, the "quality index of the joint gap" has been added, and the "joint misalignment amount" has been listed as a major sub-item, with the purpose of strengthening the control of assembly quality and effectively ensuring the construction quality of the spherical tank.
This standard is written in accordance with the relevant provisions of Article 3.2.2, 3.4.1 of GBJ94-86, Article 8.2.1, 8.4.2 of GB12337-90. Allowable deviation value of misalignment: There are different requirements in GBJ94-86 and GB12337-90. This standard adopts the provisions of the new standard GB12337-90. In addition, according to GB12337-90, the angular deformation in the original standard is changed to the correction angle E. 2.3.2 (the reserved provisions of Article 3.0.19 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with the relevant provisions of Article 3.3.1 of GBI94-86, Article 7.2.2 of GB12337-90.
2.3.3 (modified article of Article 3.0.18 of the original standard) adds the quality index of "pillar straightness" and the position of the connecting plate on the basis of the original standard. The taboo is to strengthen the control of the quality of the pillar and the position of the connecting plate.
This article is written in accordance with the relevant provisions of Article 7.2.6 and Article 8.2.2 of GB12337--90, Article 2.4.1, 3.3.2, and 3.3.3 of GB94-86. 3 Spherical storage tank welding project
3.1 Guarantee items
3.1.1 (reserved article of Article 3.0.3 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with the provisions of Article 8.3.3 of GB12337--90 and Article 4.1.1 of GBJ94-86.
3.1.2 (modified article of Article 3.0.2 of the original standard) adds the requirements for the qualification of non-destructive testing personnel on the basis of the original standard. This article is written in accordance with the provisions of Article 8.3.2, Article 8.6.1 of GB1233790 and Article 4.2.1 and Article 5.2.1 of GBJ94-86. 3.1.3 (reserved article of Article 3.0.4 of the original standard) The original standard is applicable and is retained.
This article is written in accordance with the relevant provisions of Article 4.6.1 of GB12337-m90 and Article 4.3.3 of GBJ94-86.
3.1.4 (reserved article of Article 3.0.5 of the original standard) The original standard is applicable and is retained.
This article is written in accordance with Article 8.6 of GB12337--90 and the relevant provisions of Sections 3 and 4 of Chapter 5 of GB19486.
3.1.5 (the revised text of Article 3.0.15 of the original standard) The original standard article is an inspection item, which is now changed to a guarantee item. Because in the actual construction process, the quality of the overall heat treatment of the spherical tank after welding is directly related to the quality of the weld and the degree of stress elimination in the spherical tank, affecting the safe operation and service life of the spherical tank, so the original inspection item is changed to a guarantee item. This article is written in accordance with Article 8.8 of GB12337--90: the relevant provisions of Chapter 6 of GBJ.94-86.
3.1.6 (the reserved article of Article 3.0.7 of the original standard) The original standard article is applicable and is retained, but the word "mechanical property test" in the original article is changed to "mechanical and bending property test" according to the current standard practice. This article is written in accordance with Article 8.9 of GB1233790 and the relevant provisions of Chapter 7 of GBJ94-86.
3.1.7 (the revised article of Article 3.0.6 of the original standard) removes the "foundation settlement observation test" on the basis of the original standard. Since this standard only assesses the installation quality of the spherical tank, the "foundation settlement observation test" does not belong to the scope of inspection of this standard, so it is not listed. And according to the current standard terminology, the "pressure resistance test" is changed to "pressure test".
This article is written in accordance with Article 8.10 of GB12337-90 and the relevant provisions of Chapter 8 of GBJ94-86.
3.1.8 (the revised text of Article 3.0.8 of the original standard) changes the inspection item "There shall be no cracks on the surface of the weld and heat-affected zone" in the original standard to a guarantee item. Because cracks are a defect that has a great impact on the quality of welds, cracks are strictly prohibited in the welds and heat-affected zones of pressure vessels, so this item is changed to a guarantee item.
This article is written in accordance with the relevant provisions of Article 8.5.1 of GB12337-90 and Article 5.1.2 of GBJ94-86.
32 Basic items
3.2.1 (the revised text of Article 3.0.8 of the original standard) On the basis of the original standard, "There shall be no cracks on the surface of the weld and heat-affected zone" is listed as a guarantee item. The quality requirements for the tank surface and fillet welds have been added. This article is written based on the provisions of Article 8.5: Article 8.7 of GB12337-90, Article 4.5.1→Article 5.1.2 of GBJ94--86, 3.2.2 (Added Article)
This article is written based on the relevant provisions of Article 8.3.1, Article 8.3.4, Article 8.3.5 of GB12337--90 and Chapter 4, Section 4 of GBJ94--86. The purpose of adding this article is to strengthen the quality control of the welding process, so as to ensure the welding quality. 8
3.3 Allowable Deviation Items
3.3.1 (Amendment to Article 3.0.16 and Article 3.0.17 of the original standard) Based on the original standard, the quality index of the undercut allowable deviation item is removed, because Article 65, Item 4, Paragraph 1 of the "Regulations on Safety Technical Supervision of Pressure Vessels" clearly stipulates that "spherical pressure vessels and pressure vessels with a weld coefficient of 1.0 shall not have a large edge on the weld surface".
This article is written based on the relevant provisions of Article 3.4.1, Article 3, Article 4.2, Article 5.1.2 of GBJ94-86, Article 8.4.1, Article 8.5.2, Article 8.5.3 of GB12337-90.
The quality index of "the difference between the minimum inner diameter and the minimum inner diameter, the difference between the clearance between the two poles and the designed inner diameter" in the original article is included in the chapter of spherical storage tank assembly engineering. The purpose is to strengthen the control of this index during the assembly process to ensure the geometric size of the ball key. After welding, the sleeve should also be inspected.14) Based on the original standard, the following contents have been added: "No forced assembly", "No excessive damage on the surface of the spherical shell plate, and clean surface of the groove". "No forced assembly" is listed as a major sub-item, because forced assembly will increase the assembly stress of the spherical tank and affect the safe operation of the spherical tank.
This article is written in accordance with Article 8.1.2 and Article 8.2.1.1 of GB12337-90, Article 3.2.1, Article 4.4.2, Article 4.3.5 of GBJ94-86 and Articles 62 and 63 of the "Regulations on Safety Technical Supervision of Pressure Vessels". 2.3: Allowable deviation items
2.3.1 (the revised article of Article 3.0.17 of the original standard) Based on the original standard, the "quality index of the joint gap" has been added, and the "joint misalignment amount" has been listed as a major sub-item, with the purpose of strengthening the control of assembly quality and effectively ensuring the construction quality of the spherical tank.
This standard is written in accordance with the relevant provisions of Article 3.2.2, 3.4.1 of GBJ94-86, Article 8.2.1, 8.4.2 of GB12337-90. Allowable deviation value of misalignment: There are different requirements in GBJ94-86 and GB12337-90. This standard adopts the provisions of the new standard GB12337-90. In addition, according to GB12337-90, the angular deformation in the original standard is changed to the correction angle E. 2.3.2 (the reserved provisions of Article 3.0.19 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with the relevant provisions of Article 3.3.1 of GBI94-86, Article 7.2.2 of GB12337-90.
2.3.3 (modified article of Article 3.0.18 of the original standard) adds the quality index of "pillar straightness" and the position of the connecting plate on the basis of the original standard. The taboo is to strengthen the control of the quality of the pillar and the position of the connecting plate.
This article is written in accordance with the relevant provisions of Article 7.2.6 and Article 8.2.2 of GB12337--90, Article 2.4.1, 3.3.2, and 3.3.3 of GB94-86. 3 Spherical storage tank welding project
3.1 Guarantee items
3.1.1 (reserved article of Article 3.0.3 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with the provisions of Article 8.3.3 of GB12337--90 and Article 4.1.1 of GBJ94-86.
3.1.2 (modified article of Article 3.0.2 of the original standard) adds the requirements for the qualification of non-destructive testing personnel on the basis of the original standard. This article is written in accordance with the provisions of Article 8.3.2, Article 8.6.1 of GB1233790 and Article 4.2.1 and Article 5.2.1 of GBJ94-86. 3.1.3 (reserved article of Article 3.0.4 of the original standard) The original standard is applicable and is retained.
This article is written in accordance with the relevant provisions of Article 4.6.1 of GB12337-m90 and Article 4.3.3 of GBJ94-86.
3.1.4 (reserved article of Article 3.0.5 of the original standard) The original standard is applicable and is retained.
This article is written in accordance with Article 8.6 of GB12337--90 and the relevant provisions of Sections 3 and 4 of Chapter 5 of GB19486.
3.1.5 (the revised text of Article 3.0.15 of the original standard) The original standard article is an inspection item, which is now changed to a guarantee item. Because in the actual construction process, the quality of the overall heat treatment of the spherical tank after welding is directly related to the quality of the weld and the degree of stress elimination in the spherical tank, affecting the safe operation and service life of the spherical tank, so the original inspection item is changed to a guarantee item. This article is written in accordance with Article 8.8 of GB12337--90: the relevant provisions of Chapter 6 of GBJ.94-86.
3.1.6 (the reserved article of Article 3.0.7 of the original standard) The original standard article is applicable and is retained, but the word "mechanical property test" in the original article is changed to "mechanical and bending property test" according to the current standard practice. This article is written in accordance with Article 8.9 of GB1233790 and the relevant provisions of Chapter 7 of GBJ94-86.
3.1.7 (the revised article of Article 3.0.6 of the original standard) removes the "foundation settlement observation test" on the basis of the original standard. Since this standard only assesses the installation quality of the spherical tank, the "foundation settlement observation test" does not belong to the scope of inspection of this standard, so it is not listed. And according to the current standard terminology, the "pressure resistance test" is changed to "pressure test".
This article is written in accordance with Article 8.10 of GB12337-90 and the relevant provisions of Chapter 8 of GBJ94-86.
3.1.8 (the revised text of Article 3.0.8 of the original standard) changes the inspection item "There shall be no cracks on the surface of the weld and heat-affected zone" in the original standard to a guarantee item. Because cracks are a defect that has a great impact on the quality of welds, cracks are strictly prohibited in the welds and heat-affected zones of pressure vessels, so this item is changed to a guarantee item.
This article is written in accordance with the relevant provisions of Article 8.5.1 of GB12337-90 and Article 5.1.2 of GBJ94-86.
32 Basic items
3.2.1 (the revised text of Article 3.0.8 of the original standard) On the basis of the original standard, "There shall be no cracks on the surface of the weld and heat-affected zone" is listed as a guarantee item. The quality requirements for the tank surface and fillet welds have been added. This article is written based on the provisions of Article 8.5: Article 8.7 of GB12337-90, Article 4.5.1→Article 5.1.2 of GBJ94--86, 3.2.2 (Added Article)
This article is written based on the relevant provisions of Article 8.3.1, Article 8.3.4, Article 8.3.5 of GB12337--90 and Chapter 4, Section 4 of GBJ94--86. The purpose of adding this article is to strengthen the quality control of the welding process, so as to ensure the welding quality. 8
3.3 Allowable Deviation Items
3.3.1 (Amendment to Article 3.0.16 and Article 3.0.17 of the original standard) Based on the original standard, the quality index of the undercut allowable deviation item is removed, because Article 65, Item 4, Paragraph 1 of the "Regulations on Safety Technical Supervision of Pressure Vessels" clearly stipulates that "spherical pressure vessels and pressure vessels with a weld coefficient of 1.0 shall not have a large edge on the weld surface".
This article is written based on the relevant provisions of Article 3.4.1, Article 3, Article 4.2, Article 5.1.2 of GBJ94-86, Article 8.4.1, Article 8.5.2, Article 8.5.3 of GB12337-90.
The quality index of "the difference between the minimum inner diameter and the minimum inner diameter, the difference between the clearance between the two poles and the designed inner diameter" in the original article is included in the chapter of spherical storage tank assembly engineering. The purpose is to strengthen the control of this index during the assembly process to ensure the geometric size of the ball key. After welding, the sleeve should also be inspected.1, 3.3.2, 3.3.3, 3 Spherical tank welding project
3.1 Guarantee items bzxZ.net
3.1.1 (reserved provisions of Article 3.0.3 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with Article 8.3.3 of GB12337--90 and Article 4.1.1 of GBJ94-86.
3.1.2 (modified provisions of Article 3.0.2 of the original standard) On the basis of the original standard, the requirements for the qualifications of non-destructive testing personnel are added. This article is written in accordance with the provisions of Article 8.3.2, Article 8.6.1 of GB1233790 and Article 4.2.1 and Article 5.2.1 of GBJ94-86. 3.1.3 (reserved provisions of Article 3.0.4 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with the relevant provisions of GB12337-m90, Section 4.6.1, GBJ94--86 Section 4.3.3.
3.1.4 (Reserved provisions of Article 3.0.5 of the original standard) The original standard is applicable and is retained.
This article is written in accordance with the relevant provisions of Article 8.6 of GB12337--90 and Sections 3 and 4 of Chapter 5 of GB19486.
3.1.5 (Revised text of Article 3.0.15 of the original standard) The original standard article is an inspection item, which is now changed to a guarantee item, because in the actual construction process, the quality of the overall heat treatment of the spherical tank after welding is directly related to the quality of the weld and the degree of stress elimination in the spherical tank, affecting the safe operation and service life of the spherical tank, so the original inspection item is changed to a guarantee item. This article is written in accordance with Article 8.8 of GB12337-90 and the relevant provisions of Chapter 6 of GBJ.94-86.
3.1.6 (the reserved article of Article 3.0.7 of the original standard) The original article is applicable and is retained, but the word "mechanical property test" in the original article is changed to "mechanical and bending property test" according to the current standard practice. This article is written in accordance with Article 8.9 of GB12337-90 and the relevant provisions of Chapter 7 of GBJ94-86.
3.1.7 (the revised article of Article 3.0.6 of the original standard) On the basis of the original standard, the "foundation settlement observation test" is removed. Since this standard only assesses the installation quality of the spherical tank, the "foundation settlement observation test" does not belong to the scope of inspection of this standard, so it is not listed. And according to the current standard terminology, the "pressure resistance test" is changed to "pressure test".
This article is written in accordance with the relevant provisions of Article 8.10 of GB12337-90 and Chapter 8 of GBJ94-86.
3.1.8 (the revised text of Article 3.0.8 of the original standard) changes the "there shall be no cracks on the surface of the weld and heat-affected zone" in the original standard inspection items to a guarantee item. Because cracks are a defect that has a great impact on the quality of welds, cracks are strictly prohibited in the welds and heat-affected zones of pressure vessels, so this item is changed to a guarantee item.
This article is written in accordance with the relevant provisions of Article 8.5.1 of GB12337-90 and Article 5.1.2 of GBJ94-86.
32 Basic items
3.2.1 (the revised text of Article 3.0.8 of the original standard) On the basis of the original standard, "there shall be no cracks on the surface of the weld and heat-affected zone" is listed as a guarantee item. Added quality requirements for tank surface and fillet welds. This article is written based on the provisions of GB12337-90 Article 8.5: Article 8.7, GBJ94--86 Article 4.5.1 → Article 5.1.2, 3.2.2 (Added Article)
This article is written based on GB12337--90 Article 8.3.1, Article 8.3.4, Article 8.3.5, GBJ94--86 Chapter 4, Section 4. The purpose of adding this article is to strengthen the quality control of the welding process, so as to ensure the quality of welding. 8
3.3 Allowable Deviation Items
3.3.1 (Amendment to Article 3.0.16 and Article 3.0.17 of the original standard) Based on the original standard, the quality index of the undercut allowable deviation item is removed, because Article 65, Item 4, Paragraph 1 of the "Regulations on Safety Technical Supervision of Pressure Vessels" clearly stipulates that "spherical pressure vessels and pressure vessels with a weld coefficient of 1.0 shall not have a large edge on the weld surface".
This article is written based on the relevant provisions of Article 3.4.1, Article 3, Article 4.2, Article 5.1.2 of GBJ94-86, Article 8.4.1, Article 8.5.2, Article 8.5.3 of GB12337-90.
The quality index of "the difference between the minimum inner diameter and the minimum inner diameter, the difference between the clearance between the two poles and the designed inner diameter" in the original article is included in the chapter of spherical storage tank assembly engineering. The purpose is to strengthen the control of this index during the assembly process to ensure the geometric size of the ball key. After welding, the sleeve should also be inspected.1, 3.3.2, 3.3.3, 3 Spherical tank welding project
3.1 Guarantee items
3.1.1 (reserved provisions of Article 3.0.3 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with Article 8.3.3 of GB12337--90 and Article 4.1.1 of GBJ94-86.
3.1.2 (modified provisions of Article 3.0.2 of the original standard) On the basis of the original standard, the requirements for the qualifications of non-destructive testing personnel are added. This article is written in accordance with the provisions of Article 8.3.2, Article 8.6.1 of GB1233790 and Article 4.2.1 and Article 5.2.1 of GBJ94-86. 3.1.3 (reserved provisions of Article 3.0.4 of the original standard) The original standard is applicable and reserved.
This article is written in accordance with the relevant provisions of GB12337-m90, Section 4.6.1, GBJ94--86 Section 4.3.3.
3.1.4 (Reserved provisions of Article 3.0.5 of the original standard) The original standard is applicable and is retained.
This article is written in accordance with the relevant provisions of Article 8.6 of GB12337--90 and Sections 3 and 4 of Chapter 5 of GB19486.
3.1.5 (Revised text of Article 3.0.15 of the original standard) The original standard article is an inspection item, which is now changed to a guarantee item, because in the actual construction process, the quality of the overall heat treatment of the spherical tank after welding is directly related to the quality of the weld and the degree of stress elimination in the spherical tank, affecting the safe operation and service life of the spherical tank, so the original inspection item is changed to a guarantee item. This article is written in accordance with Article 8.8 of GB12337-90 and the relevant provisions of Chapter 6 of GBJ.94-86.
3.1.6 (the reserved article of Article 3.0.7 of the original standard) The original article is applicable and is retained, but the word "mechanical property test" in the original article is changed to "mechanical and bending property test" according to the current standard practice. This article is written in accordance with Article 8.9 of GB12337-90 and the relevant provisions of Chapter 7 of GBJ94-86.
3.1.7 (the revised article of Article 3.0.6 of the original standard) On the basis of the original standard, the "foundation settlement observation test" is removed. Since this standard only assesses the installation quality of the spherical tank, the "foundation settlement observation test" does not belong to the scope of inspection of this standard, so it is not listed. And according to the current standard terminology, the "pressure resistance test" is changed to "pressure test".
This article is written in accordance with the relevant provisions of Article 8.10 of GB12337-90 and Chapter 8 of GBJ94-86.
3.1.8 (the revised text of Article 3.0.8 of the original standard) changes the "there shall be no cracks on the surface of the weld and heat-affected zone" in the original standard inspection items to a guarantee item. Because cracks are a defect that has a great impact on the quality of welds, cracks are strictly prohibited in the welds and heat-affected zones of pressure vessels, so this item is changed to a guarantee item.
This article is written in accordance with the relevant provisions of Article 8.5.1 of GB12337-90 and Article 5.1.2 of GBJ94-86.
32 Basic items
3.2.1 (the revised text of Article 3.0.8 of the original standard) On the basis of the original standard, "there shall be no cracks on the surface of the weld and heat-affected zone" is listed as a guarantee item. Added quality requirements for tank surface and fillet welds. This article is written based on the provisions of GB12337-90 Article 8.5: Article 8.7, GBJ94--86 Article 4.5.1 → Article 5.1.2, 3.2.2 (Added Article)
This article is written based on GB12337--90 Article 8.3.1, Article 8.3.4, Article 8.3.5, GBJ94--86 Chapter 4, Section 4. The purpose of adding this article is to strengthen the quality control of the welding process, so as to ensure the quality of welding. 8
3.3 Allowable Deviation Items
3.3.1 (Amendment to Article 3.0.16 and Article 3.0.17 of the original standard) Based on the original standard, the quality index of the undercut allowable deviation item is removed, because Article 65, Item 4, Paragraph 1 of the "Regulations on Safety Technical Supervision of Pressure Vessels" clearly stipulates that "spherical pressure vessels and pressure vessels with a weld coefficient of 1.0 shall not have a large edge on the weld surface".
This article is written based on the relevant provisions of Article 3.4.1, Article 3, Article 4.2, Article 5.1.2 of GBJ94-86, Article 8.4.1, Article 8.5.2, Article 8.5.3 of GB12337-90.
The quality index of "the difference between the minimum inner diameter and the minimum inner diameter, the difference between the clearance between the two poles and the designed inner diameter" in the original article is included in the chapter of spherical storage tank assembly engineering. The purpose is to strengthen the control of this index during the assembly process to ensure the geometric size of the ball key. After welding, the sleeve should also be inspected.The revised article of Article 17) removes the quality index of the undercut allowable deviation item on the basis of the original standard article, because Article 65, Item 4, Paragraph 1 of the "Regulations on Safety Technical Supervision of Pressure Vessels" clearly stipulates that "spherical pressure vessels and pressure vessels with a weld coefficient of 1.0 shall not have a larger edge on the weld surface".
This article is written based on the relevant provisions of Article 3.4.1, Article 3, 4.2, Article 5.1.2 of GBJ94-86, Article 8.4.1, Article 8.5.2, Article 8.5.3 of GB12337-90.
The quality index of "the difference between the minimum inner diameter and the minimum inner diameter, the difference between the two poles and the designed inner diameter" in the original article is included in the chapter of spherical storage tank assembly engineering. The purpose is to strengthen the control of this index during the assembly process to ensure the geometric size of the ball key. After welding, the sleeve should also be inspected.The revised article of Article 17) removes the quality index of the undercut allowable deviation item on the basis of the original standard article, because Article 65, Item 4, Paragraph 1 of the "Regulations on Safety Technical Supervision of Pressure Vessels" clearly stipulates that "spherical pressure vessels and pressure vessels with a weld coefficient of 1.0 shall not have a larger edge on the weld surface".
This article is written based on the relevant provisions of Article 3.4.1, Article 3, 4.2, Article 5.1.2 of GBJ94-86, Article 8.4.1, Article 8.5.2, Article 8.5.3 of GB12337-90.
The quality index of "the difference between the minimum inner diameter and the minimum inner diameter, the difference between the two poles and the designed inner diameter" in the original article is included in the chapter of spherical storage tank assembly engineering. The purpose is to strengthen the control of this index during the assembly process to ensure the geometric size of the ball key. After welding, the sleeve should also be inspected.
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