GB 50231-1998 General specification for construction and acceptance of mechanical equipment installation projects
Some standard content:
Engineering construction standard full text information system
National Standard of the People's Republic of China
GB50231—98
General code for construction and acceptance of mechanical equipment
installation engineering
1998-08-27
State Bureau of Technical Supervision
Ministry of Construction of the People's Republic of China
Engineering construction standard full text information system
1998-12-01 implementation
Jointly issued
Engineering construction standard full text information system
National Standard of the People's Republic of China
General code for construction and acceptance of mechanical equipment
installation engineering
50231—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: 1998
Month 1
1998Beijing
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 No. 19862630 and No. 19872390 documents, the 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 ||《Compressor, fan, pump installation project construction and acceptance specification》GB50275-98《Crushing, grinding equipment installation project construction and acceptance specification》GB50276-98《Casting equipment installation project construction and acceptance specification》GB50277-98《Lifting equipment installation project construction and acceptance specification》GB50278-98The above specifications are managed by the State Machinery Industry Bureau, and the specific interpretation and other work is the responsibility of the Installation Engineering Standard Quota Station of the Ministry of Machinery Industry, and the publication and distribution is organized by the Standard Quota Research Institute of the Ministry of Construction. www.bzxz.net
Ministry of Construction of the People's Republic of China
August 27, 1998
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Revision Notes
This specification is edited by the former Ministry of Machinery Industry in accordance with the requirements of the State Planning Commission's Document No. 450 [1986], which is required by the State Planning Commission. Specifically, it was organized by the Installation Engineering Standard and Quota Station of the Ministry of Machinery Industry, and jointly revised with the First Metallurgical Construction Corporation of the Ministry of Metallurgy, the Construction Technology Research Institute of the Ministry of Chemical Industry, the Technical Standard Center of the National Installation Association, and Chongqing Jianzhu University. During the revision process, the revision group carefully summarized the experience since the implementation of the first volume of the "General Provisions" of the original "Construction and Acceptance Specifications for Mechanical Equipment Installation Engineering", fully investigated and understood the new materials, new technologies and new processes in my country's mechanical equipment installation industry, and strictly followed the procedures, steps and requirements of the Ministry of Construction to revise the standard specifications. Finally, our department reviewed and finalized it together with relevant departments.
This specification is divided into 8 chapters, 18 sections and 20 appendices. The main contents of the revision are: 1. The original "General Provisions" for equipment installation projects have been revised into general specifications applicable to all types of mechanical equipment installation projects across the country, expanding the coverage of the specification. 2. New technologies and processes have been added, such as expansion anchor bolts, epoxy mortar anchor bolts, vibration damping pads, installation without washer iron, slurry method, hydraulic and pneumatic lubrication pipelines, coupling assembly has been expanded to 11 varieties and types, and the technical requirements, methods and quality inspections for cleaning, rust removal and degreasing are more clear. 3. The original specification was formulated in the 1970s, and its parameters and technical requirements are less scientific and practical. With the development of my country's products and construction technology, this revision has been comprehensively revised in accordance with my country's current standards and mature construction technology. 4. Nouns, terminology, geometric tolerances and measurement units have been greatly revised in accordance with the current national standards and regulations of the equipment installation industry. If you find any need to modify or supplement this specification during the implementation process, please send your opinions and relevant materials to the Management Group of the General Specifications for Construction and Acceptance of Mechanical Equipment Installation Engineering of the Installation Engineering Standard and Quota Station of the Ministry of Machinery Industry (Address: No. 277 Wangfujing Street, Beijing, Postal Code: 100740) for reference in future revisions. Former Ministry of Machinery Industry
August 1998
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 1 General
Chapter 2
Section 1
Section 2
Section 3
Chapter 3
Chapter 4
Unpacking Inspection and Storage
Laying Out and Aligning and Leveling
Anchor Bolts, Washers and Grouting||tt| |Section 1
Section 2
Section 3
Chapter 5
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Anchor bolts
General provisions
Assembly of bolts, keys, and locating pins
Assembly of couplings
Assembly of clutches and brakes
Assembly of fittings with interference fit
Sliding bearing assembly
Section 7
Rolling bearing assembly
Section 8
Section 9
Chapter 6
Section 1
Section 2
Section 3
Assembly of transmission belts, chains and gears
Assembly of seals
.Electric core
Installation of hydraulic, pneumatic and lubrication pipelines
Preparation of pipes
Welding and installation of pipelines||tt| |Full text information system of engineering construction standards for pickling, flushing, purging and painting of pipelines
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Full text information system of engineering construction standards
Chapter VII Commissioning.
Chapter 8 Project Acceptance
Appendix—
Allowable Deviation of Equipment Foundation Size and Position Appendix 2 When pulling steel wire horizontally, the distance between the two supporting points, the diameter of the steel wire, the selection of the heavy hammer and the sag of the steel wire by dead weight
Appendix 3
Appendix 4
Appendix 5
Appendix 6
Appendix 7
Appendix 8
Appendix 9
Appendix 10
Appendix 10
Appendix 10
Specifications, applicable scope and drilling diameter of YG type expansion anchor bolts and depth regulations
Preparation procedure and technical requirements for epoxy mortar Slanted pads and flat pads
Mix ratio of non-shrinkage concrete and micro-expansion concrete Technical requirements and construction methods for preparation of mortar concrete Construction method for placing pads by grouting
Common rust removal methods for metal surfaces
Mix ratio of alkaline cleaning liquid and emulsified degreasing liquid Commonly used metal cleaning agents
Degreasing agent
Appendix 13
Appendix 14
Appendix 15
Appendix 16
Appendix 17||tt| |Appendix 18
Appendix 19
Appendix 20
Additional instructions
Anti-seizure agent
Electric telephone number
Calculation method of bolt stiffness and connected parts stiffnessMeasurement method of radial displacement of two axis centers and inclination of two axis lines in coupling assembly
Assembly method of fittings with interference fit
Common coolants for cold assembly
Mix ratio of pipeline pickling liquid
Standard for grade of pipeline flushing cleanliness
Explanation of terms used in this specification·
Full text of engineering construction standard Information System
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Engineering Construction Standard Full Text Information System
Chapter I General
Article 1.0.1 This specification is formulated to guide the construction and acceptance of mechanical equipment installation projects, ensure quality and safety, promote technological progress, and improve economic benefits. Article 1.0.2 This specification applies to the construction and acceptance of various types of mechanical equipment installation projects, from unpacking to the no-load test run of the equipment. For equipment that must be loaded for test run, it can be loaded for test run. Article 1.0.3 Equipment installation projects should be constructed according to the design. When unreasonable design is found during construction, modification suggestions should be put forward in time, and construction can only be carried out according to the changed design after approval of the design change.
Article 1.0.4 The mechanical equipment installed, the main materials or materials used in important parts must comply with the provisions of the design and product standards, and should have a certificate of conformity. Article 1.0.5 The various measuring and testing instruments, instruments, meters and equipment used in the installation of equipment should comply with the provisions of the current national metrology regulations, and their accuracy level should not be lower than the accuracy level of the inspected object.
Article 1.0.6 The concealed projects in the equipment installation should be inspected before the project is concealed, and records should be made. The installation can only be continued after passing the inspection. Article 1.0.7 During the installation of equipment, self-inspection, mutual inspection and professional inspection should be carried out, and each process should be inspected and recorded. The records should be used as the basis for project acceptance. Article 1.0.8 In addition to being implemented in accordance with this specification, the construction of equipment installation projects should also comply with the provisions of the current national standards and specifications. Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Construction Preparation
Second Draft
Section 1 Construction Conditions
Article 2.1.1 Before construction, technical documents of design and equipment shall be available; for large, medium, special or complex installation projects, construction organization design or construction plan shall be prepared.
Before construction, temporary buildings, transportation roads, water sources, electricity, steam, compressed air, lighting, fire-fighting facilities, main materials and machinery and labor shall be fully prepared and reasonably arranged. Article 2.1.2 Before construction, the roof, exterior walls, doors and windows, and interior painting of the factory building shall be basically completed. When it is necessary to cooperate with the installation, the relevant foundation floor, trench and other projects shall be completed, and the concrete strength shall not be less than 75% of the design strength; the construction materials, soil, debris, etc. at and near the installation construction site shall be cleaned up.
Article 2.1.4 When the equipment installation process requires constant temperature, constant humidity, shockproof, dustproof or radiationproof, corresponding measures should be taken at the installation site before the corresponding process can be carried out.
Article 2.1.5 When the meteorological conditions are not suitable for the equipment installation requirements, measures should be taken. Construction can only be carried out after measures are taken. Article 2.1.6 When using the building structure as the load-bearing point for lifting and handling equipment, the bearing capacity of the structure should be calculated, and if necessary, it can be used with the consent of the design unit.
Section 2 Unpacking Inspection and Storage
Article 2.2.1 Equipment unpacking should be carried out with the participation of relevant personnel of the construction unit, and the following items should be checked and records should be made: 1. Box number, number of boxes and packaging; 2. Name, model and specification of equipment; 3. Packing list, equipment technical documents, materials and special tools; 4. Whether the equipment has missing parts, whether the surface is damaged or rusted, etc.; 5. Other situations that need to be recorded.
Article 2.2.2 Equipment and its parts, components and special tools should be properly stored and should not be deformed, damaged, rusted, disordered or lost. Equipment Foundation
Section 3
Article 2.3.1 The location, geometric dimensions and quality requirements of the equipment foundation should comply with the provisions of the current national standard "Specifications for Construction and Acceptance of Reinforced Concrete Engineering", and there should be acceptance materials or records. Before the equipment is installed, the equipment foundation position and geometric dimensions shall be rechecked according to the allowable deviation in Appendix 1 of this specification. Article 2.3.2 The oil, gravel, soil, and water in the surface of the equipment foundation and the reserved holes for the anchor bolts shall be cleaned; the threads and nuts of the embedded anchor bolts shall be well protected; the surface of the pad iron placement shall be chiseled flat. Article 2.3.3 The foundation that needs to be pre-pressed shall be pre-pressed and there shall be a record of pre-pressing settlement.
Engineering Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
Chapter 3 Laying out and aligning and leveling
Article 3.0.1 Before the equipment is in place, the installation reference line shall be delineated according to the construction drawings and the axis or edge line and elevation line of the relevant buildings. Article 3.0.2 Equipment that are connected, connected or arranged with each other shall have a common installation reference line delineated. If necessary, a general or permanent center plate or reference point shall be buried according to the specific requirements of the equipment.
Article 3.0.3 The distance between the plane position installation datum line and the actual axis of the foundation or the actual axis and edge line of the factory wall (column) shall have an allowable deviation of ±20mm. Article 3.0.4 The allowable deviation of the plane position and elevation of the equipment positioning datum surface, line or point to the installation datum line shall comply with the provisions of Table 3.0.4. Table 3.0.4
Allowable deviation of the plane position and elevation of the equipment to the installation datum line Item
No mechanical connection with other equipment
Mechanical connection with other equipment
Allowable deviation (mm)
Plane position
Article 3.0.5 After the positioning datum surface, line or point for equipment alignment and leveling is determined, the alignment and leveling of the equipment shall be inspected at the given measurement position, and the original measurement position shall not be changed during re-inspection.
Article 3.0.6 When there is no stipulation in the technical documents of the equipment, the measurement positions for alignment and leveling of the equipment shall be selected from the following parts: 1. The main working surface of the equipment;
2. The guide surface of the supporting sliding parts;
3. The guide surface or axis of the rotating parts; Engineering 4 Construction Standard Full Text Information System
Engineering Construction Standard Full Text Information System
4. The surfaces with higher machining accuracy on the parts; 5. The main contour surface on the equipment shall be horizontal or vertical; 6. On continuous transportation equipment and metal structures, it is advisable to select an adjustable position, and the distance between two measuring points shall not be greater than 6m.
Article 3.0.7 The deviation of equipment installation accuracy should meet the following requirements: 1. It can compensate for the deviation caused by force or temperature changes; 2. It can compensate for the deviation caused by wear during use; 3. It does not increase power consumption; 4. It makes the rotation smooth; 5. It makes the machine parts bear less force under load; 6. It can facilitate the connection and matching of related parts; 7. It is conducive to improving the accuracy of the processed parts. Article 3.0.Article 8 When measuring straightness, parallelism and coaxiality by using a heavy hammer to pull a steel wire horizontally, the following requirements shall be met: 1. A whole steel wire with a diameter of 0.35~0.5mm should be selected; 2. Both ends should be supported on the same elevation plane with pulleys; 3. The quality of the heavy hammer should be determined based on the horizontal tension generated by the heavy hammer and the diameter of the steel wire. The horizontal tension generated by the heavy hammer should be calculated according to the following formula, or selected according to the provisions of Appendix 2 of this specification;
P=756.168d2
Wherein, P—horizontal tension (N);
d—wire diameter (mm).
(3.0.8-1)
4. The sag of the steel wire at the measuring point can be calculated according to the following formula, or the value can be taken according to the provisions of Appendix 2 of this specification:
fa=40·L·L2
Wherein, f is the sag (μum);
LI, L2 are the distances from the two supporting points to the measuring point (m). Engineering Construction Standard Full Text Information System
(3.0.8—2)
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