What conditions should be met before the installation of industrial metal pipes

Construction conditions before the installation of industrial metal pipes.

1) Requirements for the construction team.

1.The construction unit undertaking the construction of industrial metal pipelines shall obtain the corresponding construction qualifications and shall engage in pipeline construction within the scope of the qualification permit.

2.Before the construction of the pressure pipeline, Century Star introduced a written notice to the quality and technical supervision department where the pipeline installation project is located, and accepted the supervision and inspection of the supervision and inspection unit.

2) The conditions for starting construction that should be met before construction.

1.The engineering design drawings and other technical documents are complete and complete, and the project disclosure and drawing review have been carried out according to the procedures.

2.The construction organization design and construction plan have been approved, and the technical and safety disclosure has been carried out.

3.The construction personnel have passed the assessment in accordance with the relevant regulations.

4.Corresponding emergency plans for occupational health and safety and environmental protection have been formulated.

1. The civil engineering has been completed, the inspection is qualified, the installation requirements are met, and the handover procedures have been handled.

2. The equipment connected to the pipeline has been installed and fixed.

3. Pipeline components and pipeline supports have been inspected and qualified.

4. The inside of pipes, pipe fittings, valves, etc. has been cleaned and free of debris 5. Small-diameter pipes are mostly welded steel pipes or seamless steel pipes. The connection is mainly welded. When connecting with valves and equipment, it can be connected by thread or flange.

6 For larger pipe diameters. Buried pipes can be made of socket pressure cast iron pipes. The low-pressure pipeline adopts asbestos cement interface. The medium-pressure pipeline adopts an oil-resistant rubber ring cement interface. If there are special requirements. Some of them can be partially equipped with green lead interfaces.

7. Overhead pipelines or large-diameter buried pipelines can be connected by welding by steel plate coil or spiral coil.

Pipeline engineering construction refers to the construction of pipelines for transporting oil, natural gas and solid slurry. Including pipeline line engineering, station and warehouse engineering and pipeline ancillary engineering. Plumbing also includes equipment and equipment in a broad sense**.

One. Site arrangement.

According to the actual situation of the site, the layout is reasonable, the original facilities are maximized and the site occupation is reduced.

Two. Roads and grounds.

The roads in the work area are smooth, flat and tidy, not piled up indiscriminately, and there are no scattered objects; The site is flat and does not accumulate water, drains into a system, and is unobstructed and not blocked; Construction waste is stacked in a centralized manner and disposed of in a timely manner.

Three. Material stacking.

Fly ash and gravel masonry pools are classified and stacked into squares, masonry materials are classified into stacks, stacked neatly, and lime is centrally dissolved.

Four. Turnaround equipment storage.

Construction templates, machinery, equipment, etc. are stacked neatly.

Five. Cement depot.

Different varieties of cement are not mixed, the labels are distinguished, stacked neatly, and the mesh can be counted. There are systems, regulations, special management, quota issuance, classification and labeling, complete and correct records, consistent with the card account, and clean storage.

Six. Eliminate construction.

The disposal of waste materials and soil and rock discarded at the polluted site shall be stacked at the designated place for disposal according to the requirements of the owner and the supervising engineer, so as to minimize the impact and damage to the surrounding greenery.

Summary. Hello, dear. Before installation, the piping components and valves of industrial pipelines shall be re-inspected for materials, valve tests, non-destructive testing or other product performance re-inspections specified in the design in accordance with the requirements of standards and specifications, and those who are unqualified shall not be installed and used.

The valve should be tested by shell pressure and seal, the pressure and seal test of valve shell test should be made of clean water as the medium, and the chloride ion content in the water should not exceed 25ppm during the stainless steel valve test.

Hello, dear. The piping components of industrial pipelines should be re-inspected, valve tested, non-destructive testing or other product performance re-tested according to the requirements of standards and specifications before installation, and those who are unqualified shall not be installed and used. The valve should be shell pressure test and seal test, valve shell test pressure and seal test Zhi Pai Xian should be clean water as the medium, stainless steel valve test, chloride ion content in the water shall not exceed 25ppm.

Expand your information; 1. Industrial pipelines are industrial and mining enterprises, public works pipelines and other auxiliary pipe cavities required for the production of various products. 2. Industrial pipelines are widely used in various industrial and mining enterprises, institutions and other industries, and are distributed in various regions of urban and rural areas. 3. Industrial pipelines are the pressure pipelines with the largest variety of process flows, the most complex changes in the production environment, and the more diverse and harsh conditions of the medium to be transported.

Dear, because of restrictions, our system can't see **Oh, I'm very sorry.

Answer]: b, c, d

2022 Textbook P82 2021 Textbook P81

Knowledge points: technical requirements for industrial pipeline construction. Option A, the handover procedures should have been completed before the pipeline is installed; Option E, what needs to be completed before the installation of Hu Pei's pipe is the internal anti-corrosion and lining of the Hori, not including the external anti-corrosion.

Summary. Hello, glad to answer your questions. 1) Installation of pipes and joint parts.

2) Hydrostatic test or irrigation test.

3) Indoor steel pipes within DN32, including pipe clamps and brackets, are made and installed.

4) Steel pipes, including the production and installation of elbows (except for telescopic devices), whether on-site maple or finished elbows shall not be converted.

5) Cast iron drainage pipes, rainwater pipes and plastic drainage pipes include pipe clamps and hanging brackets, odor caps, and rainwater funnels for production and installation.

6) Manual installation of steel casing through the wall and through the floor.

What specific work does on-site plumbing involve.

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Hello, glad to answer your questions. 1) Installation of pipes and joint parts.

2) Hydrostatic test or irrigation test.

3) Indoor steel pipes within DN32, including pipe clamps and brackets, are made and installed.

4) Steel pipes, including the production and installation of elbows (except for telescopic devices), whether on-site maple or finished elbows shall not be converted.

5) Cast iron drainage pipes, rainwater pipes and plastic drainage pipes include pipe clamps and hanging brackets, odor caps, and rainwater funnels for production and installation.

6) Manual installation of steel casing through the wall and through the floor.

The above is the specific work of on-site pipeline installation.

Extended information: A pipeline is a device used to transport gases, liquids, or fluids with solid particles connected by pipes, pipe connections, valves, etc. Normally, the fluid is pressurized by blowers, compressors, pumps, boilers, etc., and then flows from the high pressure of the pipeline to the low pressure, and can also be transported by the pressure or gravity of the fluid itself.

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Answer]: a, b, c, e

This question examines the technical requirements for industrial pipeline construction. Option D: Prepare and approve an emergency response plan for possible production and bright-type safety incidents. (Preparation + Approval and Guessing).