Quality assurance measures of water source project in waterworks?

Quality assurance measures of water source project in waterworks

(1) Responsibility system for quality control personnel

Quality inspection engineer: full-time on-site quality inspector, responsible for on-site quality control, inspection and evaluation; Be responsible for preliminary evaluation and grading of nonconforming products, and report to superior leaders; Have the responsibility to stop the sequence change of unqualified processes; Have an unshirkable direct responsibility for on-site quality management.

On-site attendant: the attendant is responsible for supervising whether the operation procedures, methods, techniques and materials meet the requirements of construction technical documents, specifications and standards. Responsible for reporting the quality problems found.

Field engineer: Participate in the formulation and modification of technical scheme, and be responsible for on-site technical disclosure and control of operation procedures, methods and processes; Responsible for controlling survey and setting out the main axis; Be responsible for finding and solving problems in operation procedures, methods and processes in time.

Builder: responsible for setting out, explaining the operation process to the workers and leading the operators to carry out the construction. Be responsible for process quality.

Tester: responsible for the indoor test and in-situ test of conventional building materials, construction ratio and finished product specimens, responsible for issuing inspection reports and being responsible for the authenticity of the reports.

Sampling witness: responsible for the sampling witness and the authenticity of the specimen.

Material clerk: responsible for incoming inspection, including specification, model, batch, quantity, source of goods, factory date, appearance quality, etc. Responsible for commissioning laboratory sampling test.

Mechanical engineer: the pipe jacking construction has a high degree of electromechanical integration operation, and the main engine operation control is completed by the mechanical engineer, and the main operation engineer is responsible for the quality of the pipe jacking process.

Mechanical operator: responsible for the operation of auxiliary machinery and the quality of its operation process.

Technical person in charge of the project: responsible for technical leadership. Take direct technical leadership responsibility for project quality.

Project manager: responsible for organizing the project construction and taking direct leadership responsibility for the project quality.

Company: Responsible for the project quality for life, and responsible for organizing the project warranty during the defect liability period.

(2) Quality measures of open caisson part

Carry out quality awareness education in depth and strengthen standardization work;

Carry out construction in strict accordance with the design drawings and current relevant construction specifications, carry out total quality management activities centered on creating excellent projects, and organize QC teams to tackle key technical problems.

Strengthen measurement management, establish and improve measurement management institutions and systems.

Implement weekly quality inspection and regular meeting system.

During the construction, effective construction management systems such as technical disclosure system, measurement review system and design change approval system shall be strictly implemented. Illegal operation is not allowed, and key processes should be specially formulated.

Determine effective technical measures, and key technical personnel will follow suit.

Carry out technical training, and organize the study and training of new technologies, new processes, construction measures and construction specifications.

Raw materials must be inspected before use, and unqualified materials shall not be used.

The open caisson steel bars are processed and manufactured centrally at the site and constructed in strict accordance with the specifications. Welders of steel bars shall hold relevant certificates, and welding can be carried out only after passing the trial welding. The template adopts composite bamboo glue mold, and sponge strips are embedded in the joints to ensure smoothness and no slurry leakage.

The excavation, measurement and rectification of open caisson must be carried out according to the above technical methods.

(3) Pipe jacking quality measures

(1) Strict measures must be taken during pipe jacking construction to prevent mud in soil from flowing into the pipeline (during rectification). Therefore, the raw materials and bolt connection of the sealing device (inner flange and rubber plate) between the nose and the pipe joint should be strictly checked before construction, which meets the requirements.

(2) In pipe jacking construction, computer light target and its digital analysis and display technology must be adopted to carry out strict measurement control, so as to measure and correct with the top.

(3) Jacking and rectification of pipe jacking must be carried out in strict accordance with the mechanical long-distance jacking method and operation procedures compiled by China Railway Fourth Bureau.

(4) After jacking, the reinforcement grouting of the Yangtze River levee must be carried out according to the construction method to ensure that the gap between the pipeline and the Yangtze River levee is filled tightly.

(4) Quality control measures for immersed tubes

(1) Before the start of construction, technical disclosure of construction drawings shall be made to all employees involved in the construction to understand the design intent. Put forward quality standards for each employee.

(2) Strictly implement relevant construction regulations, take quality as the center, carry out total quality management, set up QC team to carry out activities, and keep all aspects of construction under control.

③ Strictly control the center line and elevation of pipe piles and pipe trenches. Measure the longitudinal section and center line of the excavation line, and mark the water pipeline. If there is overbreak, fill the pipe bottom elevation with gravel, and sink the pipe after repeated survey.

(4) Appearance inspection, weld inspection and water pressure test shall be carried out for pipelines before sinking, and unqualified pipelines shall not be used for construction.

(5) The concealed works can be buried only after they have passed the acceptance and obtained the visa. Make all kinds of construction records and acceptance records according to the standards.

⑥ During floating and sinking, measures should be taken to protect the pipeline section and anticorrosion layer from damage. When it is damaged, it should be repaired in time.

⑦ Before hoisting the pipe section, correctly select the hoisting point and check the hoisting stress and deformation. The stress and deformation generated by the pipeline should not be greater than the design value; After the end, take temporary reinforcement measures.

⑧ When the pipeline floats, calculate the buoyancy. When the buoyancy is insufficient, add buoys as needed to calculate the immersed tube irrigation. It is forbidden to submerge the pipeline too much to cause sinking and damage the pipeline.

When running the drill pipe, the drill pipe should slowly and evenly sink into place.

(5) Implement total quality management.

Carry out the policy of "quality first, customer first", start with improving the quality of employees, improve the quality of work, and let all employees participate in all-round and whole-process quality management. Select key and difficult projects or processes as topics, set up QC team, strengthen process analysis, improve construction measures, and ensure comprehensive excellence.

(6) Our company implements a quality assurance system.

Our company has established an effective ISO900 1:2000: 2000 standard quality management system, which is strictly implemented in accordance with the specified standards in the construction.

(7) Quality and technical education

Conduct professional technical training for contractors, and carefully study construction drawings, specifications, standards and construction organization design. At the same time, strengthen the education of excellence, strengthen the quality consciousness, and ensure the implementation of excellence planning and detailed rules. Special types of work must be certified.

(8) Strict technical disclosure system

Through the analysis of drawings and the study of site conditions, a reasonable construction scheme is worked out to ensure detailed technical disclosure before construction of each working procedure.

(9) Strictly implement the rules and regulations.

During the construction, various effective construction technology management systems are strictly implemented, such as survey recheck system, design change approval system, etc. The key working procedures must be swept according to the work instructions issued by the company, and the engineers and technicians should follow.

(10) Strict "Three Inspection System"

During the construction process, the internal system of "self-inspection, mutual inspection and special inspection" shall be strictly implemented, and all inspections by the owner and supervisor shall be actively cooperated, and all inspection visas shall be handled in time.

(1 1) quality control of engineering materials

Strictly control the quality of materials, and all engineering materials put into use must have complete and effective quality assurance verification data. The inspection of materials such as pipes, plates, steel bars, cement, sand and gravel should be detailed. Unqualified materials are prohibited from being used in this project.

(12) Technical Archives Work

With the progress of the project, the collection and arrangement of technical files should be carried out simultaneously to ensure the smooth handover to the owner on time.

(13) finished product protection

Properly protect the completed engineering parts, formulate finished product protection measures before construction, and fill in finished product protection records during construction.

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