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GB 50231-2009General code for construction and acceptance of mechanical equipment installation engineering (English PDF)

机械设备安装工程施工及验收通用规范

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Issued by

AQSIQ; MOC

Level / Type

National · Mandatory

Issue date

March 19, 2009

Implementation date

October 1, 2009

Scope

GB 50231-2009 is the English-translated version of 机械设备安装工程施工及验收通用规范.

GB 50231-2009 is the Chinese standard "General code for construction and acceptance of mechanical equipment installation engineering".

Its scope clause reads: This code was formulated in order to improve the construction level of mechanical equipment installation engineering, promote technical progress, ensure the construction quality and safety and improve the economic benefit.

This code is applicable to the general parts in the construction and acceptance of various mechanical equipment installation engineerings.

The mechanical equipment installation engineering shall be started from the unpacking of equipments to the construction and acceptance of the equipments in zero load test run, and the mechanical equipments that shall have the test run with load, it shall be end until to the load test run.

The construction of mechanical equipment installation engineering shall be carried out according to the engineering design, the engineering design is prohibited to being revised arbitrarily, corresponding opinions and advices shall be offered timely if any mistakes are discovered in the design documents and drawings, besides, the construction shall be carried out according to the engineering design modified by the original design organization.

Its clauses include general provisions; setting out perch and centering leveling.

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Document preview — GB 50231-2009

National Standard of the People's Republic of China

Classification: P 93
Replacing: GB 50231-1998

Issued by: AQSIQ; MOC

1 General Provisions
2 Construction Conditions
3 Setting out Perch and Centering Leveling
4 Anchor Bolt, Iron Gasket and Grouting
4.1 Anchor Bolt
4.2 Iron Gasket
4.3 Grouting
5 Assembly
5.1 General Provisions
5.2 Joining and Fastening
5.3 Assembly of Couplings
5.4 Assembly of Clutches and Detents
5.5 Assembly of Sliding Bearings
5.6 Assembly of Antifriction Bearings
5.7 Assembly of Driving Straps, Chains and Gears
5.8 Assembly of Sealing Articles
6 Installations of Hydraulic Pressure, Pneumatic and Lubrication Pipe
6.1 Preparations for Pipes
6.2 Welding of Pipe
6.3 Pipe Installation
6.4 Pickling, Flushing and Blowing of Pipes
6.5 Pressure Test and Paint of Pipe
7 Commissioning
7.1 Requirements of Commissioning
7.2 Electrical and Operational Control System Commissioning
7.3 Lubrication System Adjustment
7.4 Hydraulic Pressure System Commissioning
7.5 Pneumatic and Cooling System Adjustment
7.6 Heating System Adjustment
7.7 Operation test of Mechanical Equipment
7.8 Zero Load Test running of Complete Machine
8 Acceptances of Works
Appendix A Iron Gaskets
Appendix B Making of Ground Grouting Concrete and Placement of Sizing Block
Appendix C Placement of Gasket with Mud-jack Method
Appendix D Derusting Method of Metal Surface
Appendix E Cleaning of Built-up Member and Pipe
Appendix F Connection Rigidity and Pretightening Force of Bolt
Appendix G Press-in Force and Temperature Calculation of Stationary Fit
Appendix H Measurement and Calculation for Radial Dispersion and Obliquity of Two Axes in Coupling Assembly
Appendix J Pipe Washing Cleanliness Grades
Explanation of Wording in This Code

1 General Provisions

1.0.1

This code was formulated in order to improve the construction level of mechanical equipment installation engineering, promote technical progress, ensure the construction quality and safety and improve the economic benefit.

1.0.2

This code is applicable to the general parts in the construction and acceptance of various mechanical equipment installation engineerings.

1.0.3

1.0.4

1.0.5

The installed mechanical equipments, spare parts and primary materials must be in accordance with those specified in the engineering design and the relevant product standards and shall also be with the conformity certificates.

1.0.6

The various measuring instruments, detectors, instruments, apparatus and equipments adopted in the mechanical equipment installation engineering must meet those specified in the current relevant national standards; their precision class shall meet the accuracy requirement of the test item.

1.0.7

In the construction of mechanical equipment installation engineering, the construction quality shall be inspected and recorded. As for the concealed engineering, it shall be inspected and recorded before the engineering is concealed, and the equipments shall be continued to be installed after the inspection is qualified. In the engineering acceptance, the acceptance check and necessary random inspection work are carried out based on the related records.

1.0.8

The construction and acceptance of mechanical equipment installation engineering shall not only comply with this code, but also shall comply with those specified in the in the current relevant national standards.

3 Setting out Perch and Centering Leveling

3.0.1

Before the mechanical equipment are in place, the reference line of installation shall be marked out according to the construction drawing and the axial line, edge line and elevation line of relevant buildings.

3.0.2

The mechanical equipments that are mutually connected or with arrangemenf relation shall be marked out with common installation datum line and shall be buried with center reference plate or reference point according to the specific requirements of equipments. The center reference plate and reference point shall be...

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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