1, gas construction should have the following qualifications: qualified and effective electrician, welder with certificates, full-time safety officer and construction technician.
2. The following documents are required for gas construction: the company must have a safety production license of GB 1, and the construction personnel must have corresponding technical grade certificates.
3, natural gas pipeline construction and installation license, oil pipeline construction must meet the following conditions:
(1) The installation unit shall have legal qualifications and obtain the business license of the administrative department for industry and commerce. When applying for an installation license, a group company shall designate an organization or branch company specifically engaged in installation work. If you apply for an installation license in the name of a branch company, you must obtain the authorization of the head office.
(two) the installation unit shall engage in the installation of pressure pipelines in accordance with the relevant safety technical specifications of pressure pipelines and their corresponding design, installation and completion acceptance standards (hereinafter referred to as the corresponding standards).
(three) the installation unit shall ensure that the safety performance of the installed pressure pipeline meets the requirements of the safety technical specifications for pressure pipelines.
The general contracting qualification of municipal public works construction is divided into super grade, first grade and second grade.
1. Engineering performance of first-class enterprises. In recent 10 years, he has undertaken the construction of the following 7 categories and 4 categories of projects, of which at least the projects listed in 1 are qualified, and the first-class qualification can undertake the construction of various municipal public works.
2. Engineering achievements of secondary enterprises. In recent 10 years, it has undertaken the construction of the following 7 categories and 4 categories of projects, of which at least the projects listed in 1 are qualified.
What are the qualification requirements for gas pipeline construction?
Second, the gas pipeline construction process
During the construction of gas pipeline, the welding seam of the pipe body should be avoided from facing the wall, and the pipeline with inconspicuous welding seam should be marked in advance.
The installation of copper pipes or stainless steel corrugated pipes laid in pipeline wells has been carried out after the drawings and other pipeline construction are completed. When the pipeline passes through the partition in the vertical shaft, a casing shall be added, and the spacing between the casing and the pipeline shall not be less than 5 mm.
Buried gas copper pipes or stainless steel corrugated pipes should not be in contact with various metals and wires; When it is unavoidable, it should be separated by insulating materials. The hole of gas pipeline crossing the floor should be drilled down from the highest floor, and the position of the lower hole should be determined vertically layer by layer with a heavy hammer; When the upper and lower walls are not perpendicular to the straight line due to different wall thicknesses, it is advisable to make a B-bend against the wall to avoid turning with the pipe fittings.
The painting of indoor exposed gas pipeline and its accessories should be carried out after the actual pressure is qualified; When steel pipes are used for welding, they should be painted after rust removal (see metallic luster): first, all welds should be painted with two antirust primers, and then two antirust primers and two topcoats should be painted comprehensively; When galvanized steel pipe is used for threaded connection, the joints of other pipe fittings should be coated with a layer of antirust primer first, and then coated with two layers of paint.
Disadvantages of trenchless gas pipeline
1, it is difficult to locate the pipeline, and it is easy to form a water accumulation section when the arc buried pipe is buried.
2. Trenchless pipelines are buried deeply and have poor intuition.
3. High technical requirements.
4. Trenchless pipeline repair and replacement technology has just started in China, and the construction methods are still immature, and some construction methods are even blank, which makes the subsequent maintenance of pipelines difficult.
Legal basis:
Regulations on the Administration of Town Gas
Article 15
The state implements a licensing system for gas business. Enterprises engaged in gas business activities shall meet the following conditions:
(a) in line with the requirements of gas development planning;
(2) Having fuel gas sources and fuel gas facilities that meet the national standards;
(3) Having a fixed business place, a sound safety management system and a sound business plan;
(four) the main person in charge of the enterprise, the safety production management personnel and the operation, maintenance and overhaul personnel have passed the professional training and examination;
(5) Other conditions stipulated by laws and regulations.
If the conditions specified in the preceding paragraph are met, the gas management department of the local people's government at or above the county level shall issue a gas business license.
I believe that after reading the above introduction, you should know more or less that in the process of gas pipeline construction, the construction unit has requirements for the relevant qualifications of gas pipelines and can only pass them. The above is the relevant content of the gas pipeline construction qualification requirements compiled by Zhaofa. Com, I hope I can help you.