This specification applies to the installation of fixed steam boilers and fixed pressure hot water boilers assembled on site with water as the medium and rated working pressure not exceeding 2.5MPa. Boilers shipped as a whole can be implemented in accordance with the relevant provisions of this specification. This specification does not apply to the installation of cast iron boilers, boilers on transportation vehicles and ships, electric heating boilers and nuclear power boilers. GB 50273-1998 Industrial Boiler Installation Engineering Construction and Acceptance Specification GB50273-1998 Standard Download Decompression Password: www.bzxz.net

Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
GB5027398
Code for construction and acceptance of industrial boiler installation engineering
1998-08-27
1998-12-01
State Administration of Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering Construction Standard Full-text Information System
Jointly Issued
Engineering Construction Standard Full-text Information System
National Standard of the People's Republic of China
Code for construction and acceptance of industrial boiler installation engineering engineeringGB50273-98
Editor department: Former Ministry of Machinery Industry of the People's Republic of ChinaApproval department: Ministry of Construction of the People's Republic of ChinaEffective date: December 1, 1998
Engineering construction standard full text information system
Engineering construction standard full text information system
Notice on the release of ten national standards including "General Specifications for Construction and Acceptance of Mechanical Equipment Installation Engineering"Jianbiao [1998] No. 9
According to the requirements of the State Planning Commission's Document No. Jizong [1986] 2630 and Document No. Jizong [1987] 2390, ten standards including "General Specifications for Construction and Acceptance of Mechanical Equipment Installation Engineering" jointly revised by the former Ministry of Machinery Industry and relevant departments have been reviewed by relevant departments. The following standards are now approved as mandatory national standards and will be implemented from December 1, 1998. The original national standards "Construction and Acceptance Specifications for Mechanical Equipment Installation Projects" TJ231 and "Construction and Acceptance Specifications for Refrigeration Equipment Installation Projects" GBJ66-84 are abolished at the same time. "General Specifications for Construction and Acceptance of Mechanical Equipment Installation Projects" GB50231-98 "Construction and Acceptance Specifications for Continuous Conveying Equipment Installation Projects" GB50270-98 "Construction and Acceptance Specifications for Metal Cutting Machine Tool Installation Projects" GB50271-98 "Construction and Acceptance Specifications for Forging Equipment Installation Projects" GB50272-98 "Construction and Acceptance Specifications for Industrial Boiler Installation Projects" GB50273-98 "Construction and Acceptance Specifications for Refrigeration Equipment and Air Separation Equipment Installation Projects" GB50274-98||tt ||"Construction and Acceptance Specifications for Installation of Compressors, Fans and Pumps" GB50275-98"Construction and Acceptance Specifications for Installation of Crushing and Grinding Equipment" GB50276-98"Construction and Acceptance Specifications for Installation of Casting Equipment" GB50277-98"Construction and Acceptance Specifications for Installation of Lifting Equipment" GB50278-98The above specifications are managed by the State Machinery Industry Bureau, and the specific interpretation and other work is undertaken by the Installation Engineering Standard and Quota Station of the Ministry of Machinery Industry, and the publication and distribution is organized by the Standard and Quota Research Institute of the Ministry of Construction.
Ministry of Construction of the People's Republic of China
August 27, 1998
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Revision Notes
This specification is based on the requirements of the National Planning Commission's Jizong (1986) No. 450 Annex 21, edited by the former Ministry of Machinery Industry, and revised by the Machinery Industry Ministry's Machinery Installation Engineering Standards and Quotation Station in conjunction with China Machinery Industry Installation Corporation, Shanghai Industrial Boiler Research Institute, China Machinery Industry Second Installation Engineering Company and other relevant units to comprehensively revise the original "Mechanical Equipment Installation Engineering Construction and Acceptance Specification" (TJ231 (VI) 178). During the revision process, the revision team conducted extensive investigations and studies, carefully summarized the experience of the original specification since its implementation, absorbed some scientific research results of industrial boilers, and widely solicited opinions from relevant units across the country. After repeated discussions and revisions, it was finally reviewed and finalized by our ministry in conjunction with relevant departments.
This specification includes ten chapters and one appendix. The main contents of this revision are: 1. This revision includes the installation of fixed hot water boilers assembled on site into this specification, and clarifies that boilers shipped as a whole can be implemented in accordance with this specification, expanding the scope of application of the specification.
2. It is clarified that the expansion ends of the pipes that have not been annealed should be annealed, and when the hardness of the pipe ends is less than the hardness of the pipe holes, annealing is not required.
3. Supplementary provisions are made on the method of controlling the expansion rate, the provisions of the outer diameter control method are added, and the value of the expansion rate is modified. 4. In coordination with the current national standards and combined with years of construction experience, the relevant contents of the water pressure test have been revised.
5. Some construction methods and construction processes that ensure construction quality have been affirmed, and some relatively backward construction methods and construction processes have been eliminated accordingly. 6. The trial operation time of industrial boilers has been modified, such as: boilers assembled on site can run continuously with load for 48 hours, and boilers shipped as a whole are generally 4 to 24 hours. 7. Partial modification and supplementation of other relevant provisions. Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
During the implementation of this specification, if any modification or supplement is found, please send your opinions and relevant information to the Installation Engineering Standard Quota Station of the Ministry of Machinery Industry, and copy it to the Management Group of "Industrial Boiler Installation Engineering Construction and Acceptance Specifications" for reference in future revisions. Former Ministry of Machinery Industry
August 1998
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
Chapter 1 General
Chapter 2
Chapter 3
Chapter 4
Foundation Inspection and Marking
Header and Heating Surface Tubes
Boiler Drum,
Section 1
Boiler Drum, Header
Section 2
Section 3 Section
Section 4
Chapter 5
Chapter 6
Heating surface tube
.....
Pressure component welding...
Economizer, steel pipe air preheater.
Hydrostatic test
Instruments, valves and soot blowers
Section 1
Section 2
Valves and soot blowers
Chapter 7
Combustion equipment
First Section
Section 2
Section 3
Coal Thrower·
Burner
Furnace Wall Masonry and Insulation Layer
Chapter 8
Chapter 9 Furnace Baking, Furnace Boiling, Tightness Test and Trial Operation Section 1 Furnace Baking…
Section 2 Furnace Boiling
Section 3 Tightness Test and Trial Operation
C0000000000
Chapter 10 Project Acceptance
.0000000 000
Appendix I Explanation of Terms and Phrases Used in the Specification
Additional Explanations
Engineering Construction Standard Full Text Information System
c00000.5o
(13)
(36)
Engineering Construction Standard Full Text Information System
Chapter I General
Article 1.0.1 This specification is formulated to ensure the construction quality of industrial boiler and hot water boiler installation projects and promote the advancement of their installation technology. Article 1.0.2 This specification is applicable to the installation of fixed steam boilers and fixed pressure hot water boilers assembled on site with water as the medium and a rated working pressure not exceeding 2.5MPa. For boilers shipped as a whole, the relevant provisions of this specification may be implemented. This specification does not apply to the installation of cast iron boilers, boilers on transportation vehicles and ships, electric heating boilers and nuclear boilers.
Article 1.0.3 The construction unit installing the boiler must hold a boiler installation license issued by the provincial labor department that is consistent with the boiler level installation type. Article 1.0.4 Before and during the installation of the boiler, if quality problems that affect safe use are found in the pressure-bearing parts, the installation must be stopped. Article 1.0.5
In addition to being implemented in accordance with the provisions of this specification, the construction and acceptance of industrial boiler installation projects shall also comply with the provisions of the current relevant national standards and specifications. Engineering Construction Standards Full-text Information System
Engineering Construction Standards Full-text Information System
Chapter 2
Foundation Inspection and Marking
Before the boiler and its auxiliary equipment are in place, the foundation size and Article 2.0.1
position should be checked, and the allowable deviation should comply with Table 2.0.1. Permissible deviations of the foundation of the boiler and its auxiliary equipment
Coordinate positions of the longitudinal and transverse axes
Elevations of different planes
(including the embedded steel plates on the foundation surface of the columns)Horizontality of the plane
(including the pre-prepared steel plates on the foundation surface of the columns or the parts on the floor where the boiler needs to be installed)
Plane dimensions
Plane dimensions on the boss
Backhole dimensions
Center position
Reserved space Anchor bolt hole
Embedded anchor bolt
Verticality of hole wall (per meter)
Top elevationbZxz.net
Center distance (measured at the root and top)
Engineering construction standard full text information system
Allowable deviation (mm)
Engineering construction standard full text information system
Article 2.0.2
Before installing the boiler, the longitudinal and transverse installation reference lines and elevation reference points should be marked.
Article 2.0.3 The marking of the boiler foundation should meet the following requirements: 1. The longitudinal and transverse center lines should be perpendicular to each other. 2. The allowable deviation of the spacing between the corresponding two column positioning center lines is ±2mm. 3. The difference in the length of the two diagonals of the positioning center points of each group of symmetrical four columns should not be greater than 5mm.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3
Article 3.0.1 Before installing the steel frame, the number of components shall be counted according to the construction drawings, and the main components such as columns and beams shall be inspected. The allowable deviation shall comply with the provisions of Table 3.0.1.
Column length (m)
Beam length (m)
Allowable deviation before steel frame installation
Column and beam straightness
Allowable deviation (mm)
1/1000 of the length, and not more than
Article 3.0.2 When installing the steel frame, it is advisable to first determine and mark the 1m elevation line on the column according to the elevation of the bracket and column head on the column. When aligning the column, the 1m elevation line on each column shall be determined according to the elevation reference point on the operation layer of the plant. The 1m elevation line on the column shall be used as the reference elevation for the subsequent installation of boiler components and parts and testing. Article 3.0.3 The allowable deviation and testing method for steel frame installation shall comply with the provisions of Table 3.0.3.
Allowable deviation and detection method for steel frame installation
Position of each column
Distance between any two columns
(Positive deviation is preferred)
Height difference between the 1m elevation line on the column and the
elevation reference point
Difference in elevation between columns
Verticality of columns
Difference in the
length of the corresponding two diagonals of each column
Difference in the length of the two
diagonals between two columns in the vertical plane
Elevation of the beam supporting the boiler drum
Horizontalness of the dye supporting the boiler drum
Elevation of other beams
Allowable deviation (mm)
1/1000 of the spacing, 3. 0.4 Article 3. 0.4
Measure the height of any column supporting the boiler shell, and then use a level to measure the height of other columns. Measure at the 1m elevation of the column foot and the column head. Measure at both ends of the column. When there is a grouting layer between the bottom plate of the column foot and the foundation surface, its thickness should not be less than 50mm.
After aligning the column, the column foot shall be fixed to the foundation according to the design. Article 3.0.5
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
When it is necessary to weld and fix with the embedded steel bar, the steel bar shall be bent and close to the column foot, and the length of the weld shall be 6 to 8 times the diameter of the embedded steel bar, and it shall be welded firmly. Article 3.0.6 Platforms, supports, escalators, railings, railing posts and footboards shall be installed straight and welded firmly; the spacing of railing posts shall be uniform; the surface of the railing joint weld shall be smooth.
Article 3.0.7 Escalators shall not be arbitrarily shortened or extended, or the slope of the escalator and the spacing between the upper and lower footboards of the escalator and the connecting platform shall not be changed. Article 3.0.8 Holes shall not be cut arbitrarily on components such as platforms, escalators, supports, etc. When cutting is required, reinforcement shall be provided after cutting. Full text information system of construction standards for various types of workArticle 5
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
When it is necessary to weld and fix with embedded steel bars, the steel bars should be bent and close to the column base. The length of the weld should be 6 to 8 times the diameter of the embedded steel bars and should be welded firmly. Article 3.0.6 Platforms, supports, escalators, railings, railing posts and footboards should be installed straight and welded firmly; the spacing of railing posts should be uniform; the surface of the railing joint welds should be smooth.
Article 3.0.7 Escalators should not be arbitrarily shortened or lengthened, or the slope of the escalator and the spacing between the upper and lower footboards of the escalator and the connecting platform should not be changed. Article 3.0.8 Holes should not be cut arbitrarily on components such as platforms, escalators, supports, etc. When cutting is required, reinforcement should be provided after cutting. Construction Standards Full Text Information System for Types of WorkArticle 5
Engineering Construction Standards Full Text Information System
Engineering Construction Standards Full Text Information System
When it is necessary to weld and fix with embedded steel bars, the steel bars should be bent and close to the column base. The length of the weld should be 6 to 8 times the diameter of the embedded steel bars and should be welded firmly. Article 3.0.6 Platforms, supports, escalators, railings, railing posts and footboards should be installed straight and welded firmly; the spacing of railing posts should be uniform; the surface of the railing joint welds should be smooth.
Article 3.0.7 Escalators should not be arbitrarily shortened or lengthened, or the slope of the escalator and the spacing between the upper and lower footboards of the escalator and the connecting platform should not be changed. Article 3.0.8 Holes should not be cut arbitrarily on components such as platforms, escalators, supports, etc. When cutting is required, reinforcement should be provided after cutting. Construction Standards Full Text Information System for Types of Work
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