GB/T 50387-2017Code for engineering installation acceptance of metallurgical machinery hydromatic, lubricating and pneumatic system equipment (English PDF)

1.0.1

This Code is formulated to ensure the engineering installation quality of metallurgical machinery hydromatic, lubricating and pneumatic system equipment and to unify the quality acceptance standards.

1.0.2

This Code applies to the engineering installation and acceptance of newly built, renovated, and expanded metallurgical machinery hydromatic, lubricating and pneumatic system equipment.

1.0.3

This Code outlines the basic requirements for the engineering installation of metallurgical machinery hydromatic, lubricating and pneumatic system equipment.

When the design documents contain specific requirements, those requirements shall also be followed.

1.0.4

In addition to complying with the provisions of this Code, the quality acceptance of the engineering installation of metallurgical machinery hydromatic, lubricating and pneumatic system equipment shall also comply with the provisions of the relevant current national standards.

2.0.1

The construction site shall have corresponding construction technical standards, a sound safety and quality management system, and quality control and inspection procedures. Approved technical documents such as construction organization design, specific construction plans, and construction operation designs shall be available.

2.0.2

The quality inspection and acceptance of the engineering installation of metallurgical machinery hydromatic, lubricating and pneumatic system equipment shall be conducted using measuring instruments that have passed metrological verification or calibration. Their accuracy class shall meet the accuracy requirements of the tested items and shall be used within their validity period.

2.0.3

The engineering installation of metallurgical machinery hydromatic, lubricating and pneumatic system equipment shall be carried out according to the prescribed procedures. Handover inspections shall be conducted between relevant professional debris around the equipment;

11 No fewer than 10 spot checks shall be conducted for each of the above items.

2.0.10

The engineering installation quality acceptance records for metallurgical machinery hydromatic, lubricating and pneumatic system equipment shall comply with the following provisions.

1 The quality acceptance records for subentries shall be made in accordance with

Appendix A of this Code;

2 The quality acceptance records for divisions shall be made in accordance with

Appendix B of this Code;

3 The quality acceptance records for units shall be made in accordance with

Appendix C of this Code;

4 Equipment debugging and test run records shall be kept in accordance with

Appendix D of this Code;

5 The no-load linkage test run records of the equipment shall be made in accordance with Appendix E of this Code.

2.0.11

The quality acceptance procedures for the engineering installation of metallurgical machinery hydromatic, lubricating and pneumatic system equipment shall comply with the following provisions.

1 The quality acceptance of subentries shall be conducted by the constructor's professional technical managers (supervising engineers), along with the constructor's professional technical managers as well as quality inspectors, after the constructor has conducted its own inspection and found the subentries to be qualified. The quality acceptance record for subentries shall be filled out by the constructor, and the acceptance conclusion shall be filled out by the constructor (supervisor). It shall be divided into two levels. "qualified" or "unqualified".

2 The quality acceptance of divisions shall be carried out by the constructor submitting an application for acceptance to the constructor after the acceptance of divisions have passed. The project manager (chief supervising engineer) of the constructor shall organize the project managers and technical managers of the constructor, supervisor, designer and other relevant parties to conduct the acceptance. The quality acceptance record for divisions shall be filled out by the constructor. The acceptance conclusion shall be filled out by the constructor (supervisor). It shall be divided into two levels. "qualified" or "unqualified".

3 After the completion of units, the constructor shall submit an application for inspection to the constructor, and the project manager of the constructor shall organize the project managers of the constructor, supervisor, and designer to conduct the inspection. The quality acceptance record shall be filled out by the constructor. The acceptance conclusion shall be filled out by the constructor (supervisor). It shall be divided into two levels. "qualified" or "unqualified".

4 When a project is undertaken by a subcontractor, the general contractor shall be fully responsible to the client for the quality of the project. Both the general contractor and the subcontractor shall bear joint and several liability.

3.1 Equipment foundation

I Main control projects

3.1.1

The strength of the equipment foundation shall meet the requirements of the design technical documents.

Inspection quantity. 100% inspected.

Inspection method. check the basic handover documents.

3.1.2

Before the equipment is in place, a layout diagram of the center marker and elevation reference points shall be drawn according to the construction drawings and the measurement control network. The center marker and elevation reference points shall be set up according to the layout diagram. Measurements shall then be taken and the points projected.

Inspection quantity. 100% inspected.

Inspection method. check the measurement results sheet and observe the results.

3.1.3

The foundation must be inspected and accepted before equipment installation.

Equipment installation is prohibited on a foundation that has not passed acceptance inspection.

II General projects 3.1.4 The location, elevation, dimensions, anchor bolt positions, reserved holes, and embedded parts of the equipment foundation axis shall meet the requirements of the design technical documents. When there are no design requirements, the relevant provisions of the current national standard GB 50231 "General code for construction and acceptance of mechanical equipment installation engineering" shall be followed.

Inspection quantity. 100% inspected.

Inspection method. check the re-inspection records.

3.1.5

Oil, gravel, mud, water, and other debris shall be thoroughly cleaned from the equipment foundation surface and the anchor bolt holes. The threads and nuts of the embedded anchor bolts shall be properly protected.

Inspection quantity. 100% inspected.

Test method. visual inspection.

3.2 Anchor bolts

I Main control projects

3.2.1

The specifications and tightening of anchor bolts shall meet the requirements of the design technical documents.

Inspection quantity. 20% random inspection, with a minimum of 4 for inspection.

Inspection method. check the quality certificate; measure with a ruler; check the tightening record; and check by hammering the nut.

II General projects 3.2.2 Oil stains and dirt on the anchor bolts shall be thoroughly cleaned. The threaded parts shall be coated with grease sufficient for the nut to turn.

Inspection quantity. 100% inspected.

Inspection method. on-site observation and inspection.

3.2.3

Anchor bolts in pre-drilled holes shall be installed vertically. The distance between any part of the bolt and the hole wall shall be greater than 15 mm. It shall not contact the bottom of the hole.

Inspection quantity. 100% inspected.

Test method. visual inspection.

3.3 Base plates

3.3.1

The setting of equipment base plates shall meet the requirements of the design technical documents. When there are no design requirements, it shall comply with the relevant provisions of the current national standard GB 50231 "General code for construction and acceptance of mechanical equipment installation engineering".

Inspection quantity. 20% random inspection.

Inspection method. visual inspection, measurement with a ruler, feeler gauge inspection, and light tapping of the base plate with a hammer.

3.3.2

When using the grinding method to place the base plate, the contact points between the concrete foundation surface and the base plate shall be evenly distributed.

The contact area shall not be less than 75%.

Inspection quantity. 20% random inspection.

Test method. visual inspection.

4.1 General requirements

4.1.1

When handling and hoisting equipment, protective measures shall be taken to ensure the safety of personnel and equipment.

4.1.2

Equipment and components shall be unpacked and inspected before installation.

The inspection records shall be made. After the equipment is unpacked, isolation and protection measures shall be taken to prevent collision damage. It shall be installed in a timely manner.

4.1.3

Materials arriving on site shall be stacked neatly according to specifications.

Damage prevention measures shall be taken.

4.2 Inspection and acceptance of equipment and materials

Main control projects

4.2.1

The model, specifications, quality, and quantity of equipment and components shall meet the requirements of the design technical documents. Acceptance inspection shall be conducted upon arrival at the site. An acceptance record shall be created.

Inspection quantity. 100% inspected.

Inspection method. check the quality certificate, re-inspection report and acceptance record, and conduct visual inspection or actual measurement.

4.2.2

Materials and standard parts, etc., shall meet the design technical documents and product technical requirements in terms of model, specifications, quality, quantity, and performance. Acceptance shall be conducted upon arrival at the site. An acceptance record shall be created.

Inspection quantity. All quality certification documents shall be inspected. 1% of physical samples shall be randomly inspected, with a minimum of 5 samples. If the design technical documents or relevant national standards require re-inspection, re- inspection shall be conducted as stipulated.

Inspection method. check the quality certificate, re-inspection report and acceptance record, and conduct visual inspection or actual measurement.

5.1 Oil pump, oil tank and complete hydromatic (lubricating) station

I Main control projects

5.1.1

The oil tank shall be thoroughly cleaned. There shall be no visible contaminants inside.

Inspection quantity. 100% inspected.

Inspection method. visual inspection, inspection of concealed records.

II General projects 5.1.2 The permissible deviations for oil pump installation shall conform to the provisions of Table 5.1.2.

Inspection quantity. 100% inspected.

Inspection method. shall comply with the relevant provisions in Table 5.1.2.

5.1.3

The assembly of couplings shall comply with the relevant provisions of the current national standard GB 50231 "General code for construction and acceptance of mechanical equipment installation engineering".

Inspection quantity. 100% inspected.

6.1 General requirements

6.1.1

Rust removal of carbon steel pipes in hydromatic and lubricating systems can be achieved using either tank pickling or circulating pickling methods.

6.1.2

Pipes must not be forcibly connected to each other or to equipment.

6.1.3

Before painting the pipeline, rust, welding slag, burrs, oil, water and other contaminants on the surface shall be removed. The welded areas must not be painted before pressure testing.

6.1.4

Carbon steel pipes in hydromatic and lubricating oil (fluid) systems shall be pickled. After pickling, the inner wall of the pipe shall be free of rust, iron oxide scale and other attached foreign matter.

6.2 Pipe welding

6.2.1

Pipe welding shall have corresponding welding procedure qualification. Welding work instructions shall be prepared based on the welding procedure qualification report.

Inspection quantity. 100% inspected.

Inspection method. check the welding procedure qualification or welding work instruction.

6.2.2

For butt welds of steel pipes in hydromatic, grease, lubricating oil (fluid), and pneumatic systems, chlorine arc welding or hydrogen arc welding shall be used for the root pass, followed by electric arc welding for the fill pass. For stainless steel pipe welding, a protective gas shall be purged inside the pipe.

Inspection quantity. 100% inspected.

Inspection method. visual inspection.

6.2.3

The appearance quality of butt welds for hydromatic and grease pipes shall be free from cracks, surface porosity, slag inclusions, and incomplete penetration. The undercut depth shall be less than 0.5 mm. The total length of the weld on both sides shall be less than 10% of the total weld length. The weld reinforcement shall not exceed 1 + 0.1b (where b is the weld width) and shall not exceed 3 mm.

Inspection quantity. 5% random inspection, with a minimum of 10 welds.

Inspection method. observation, magnifying glass inspection, weld gauge and steel ruler inspection.

End: Final Published Version (Excerpted from Official PDF)

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