Quality management and control of reservoir engineering construction?

What is the specific content of quality management and control of reservoir engineering construction? The following is the answer of Zhong Da Consulting Company.

1, project overview

Xx Reservoir is a medium-sized water conservancy project with irrigation as the main function and comprehensive benefits of urban water supply, flood control, power generation, tourism and improvement of ecological environment. The project controls the rainwater collection area 149.5 square kilometers, and the total reservoir capacity is 33.6 million cubic meters. The main projects include barrage, diversion (emptying) tunnel, spillway, power station, canal system project, water plant and so on. The design dam type of the barrage is a reinforced concrete face rockfill dam with a height of 53m. The spillway discharge mode is sluice-controlled river bank weir, with the designed maximum discharge of 1 0,033m3/s, the newly-built power station of 2× 1250KW, and the modified installed capacity of 2×400KW. The total length of the canal system project is 50.8km, and the designed irrigation area is 65,400. The diversion tunnel of the left main canal is 17.68km long, and the designed water supply of the supporting waterworks is 200,000 tons/day, of which the first phase project is 654.38+10,000 tons, which can solve the drinking water problem of 500,000-700,000 people in the city.

2. Quality management system

Xx reservoir project construction implements "three systems" reform management system: project legal person responsibility system, bidding system and construction supervision system. Around this management mode, the owner and the parties involved in the construction set up quality management institutions, established various quality management systems and gradually improved the quality assurance system.

2. 1 quality management organization

In order to strengthen the construction quality management of xx reservoir project, all parties involved in the project have established corresponding quality assurance systems.

2. 1. 1 project legal person quality inspection system

The legal person (owner) of xx Reservoir Project is xx Water Resources Development Co., Ltd., and the company implements the general manager responsibility system and establishes the "engineering headquarters". In view of the fact that this project has many construction sites, a wide area and long lines, the engineering headquarters has set up offices in the hub area, centralized drainage system and * * water plant to be responsible for the organization and coordination of design, construction, supervision and various departments of the owner at the construction site. The owner clearly implements the chief engineer responsibility system in quality and technology management, and established the "Chief Engineer's Office" under the leadership of the chief engineer, which is specifically responsible for engineering technology and quality engineering. The chief engineer makes decisions on the quality management technology of the project on behalf of the owner. The engineering headquarters consists of the engineering department, the immigration department and the finance department, and is equipped with professionals in water conservancy, civil engineering, geology, surveying, budgeting and testing to perform the duties of Party A in this project contract on behalf of the owner. All on-site personnel shall assist the supervisor to carry out "all-weather, all-round and whole-process" inspection of the project, so that the project construction is always under control.

2. 1.2 supervision unit quality control system

According to the characteristics of this project involving many specialties, xx Company entrusts Chongqing Branch of xx Consulting Center and xx Water Industry Technology Co., Ltd., which meet the qualification requirements and have good supervision reputation, as supervision units. Supervision units set up supervision departments in xx reservoir hub area and * * water plant respectively, and implement the responsibility system of chief supervision engineer. Within the scope authorized by the owner, be responsible for supervising and controlling the design and construction quality during the project construction according to the contract, and be responsible to the owner. The supervision department is equipped with 14 full-time or part-time supervision engineers specializing in water conservancy engineering, civil engineering, electromechanical engineering, surveying, quality and safety. In order to strengthen on-site management, all supervision engineers decompose the bidding project layer by layer, assign the responsibility to people, and follow up the important working procedures and check the visa by standing by.

2. 1.3 quality assurance system of the construction unit

According to the provisions of the contract and the requirements of the supervision engineer, the main construction contractors implement the project manager responsibility system, and establish a quality assurance system with the quality manager as the center, the foreman in each work area responsible for the division of labor, and the combination of on-site quality monitoring and supervision by functional departments.

2. 1.4 quality supervision system of competent department

As the competent department of business, the Water and Power Bureau of xx District has set up a project quality supervision station in xx Reservoir, equipped with seven staff members, to exercise the government's supervision over the project quality, and further improve the quality management measures through quality supervision to ensure the project quality. Through the permanent organization set up on site, we will supervise the project quality, participate in the whole process of project construction, participate in the acceptance of each stage of the project, and supervise the handling of quality problems.

2.2 Quality management measures

In order to ensure the engineering quality and strengthen the construction quality management, the supervision department has formulated the detailed rules for the implementation of engineering quality management with the help of the owner. These Detailed Rules mainly stipulate the basis for quality evaluation and acceptance, division of unit projects, divisional projects and unit projects, project quality evaluation, quality inspection in construction stage, etc. According to the relevant spirit of Code for Construction Quality Inspection of Capital Construction Projects of Water Resources and Hydropower and the construction characteristics of xx Reservoir Project, the construction quality inspection system of this project is formulated. In order to strengthen the completion acceptance of the project, the owner has formulated the Implementation Measures for the Completion Acceptance of xx Reservoir and Supporting * * Waterworks according to the Code for Construction Acceptance of Water Conservancy and Hydropower Projects and the Code for Construction and Acceptance of Building Projects.

3, engineering quality control

Xx Reservoir Project implements an omni-directional and whole-process quality system, including design, equipment procurement, raw material supply and quality control during construction.

3. 1 quality control of engineering design

In the design of xx reservoir project, xx Hydropower Building Survey and Design Institute is selected as the design unit of hub area and canal system project, and china municipal engineering xx Design and Research Institute is selected as the design unit of * * water plant. Define the responsibilities, rights and obligations of the design unit through the design contract, and standardize the design behavior. The design unit has established a perfect quality management system, including design workflow, design document review, work standards, design document release regulations, etc. In order to ensure the quality of engineering design, the design unit sends field design representatives to provide technical disclosure and technical services, and timely adjust, change or optimize the design scheme according to the specific conditions of the construction site. When the dam type changes greatly compared with the preliminary design approved by the state, the owner shall organize the design unit to prepare corresponding documents and report them to the Chongqing Planning Commission for approval. The owner's office organizes all parties to examine and approve important design changes, and general design changes are submitted to the chief engineer for examination and approval after being reviewed by the supervisor. The design documents submitted by the design unit are first reviewed by the owner's chief engineer, and then submitted to the supervisor for review. Drawings that have not been examined and approved by the supervision engineer cannot be delivered for construction.

3.2 Equipment Procurement Quality Control

The performance and technical indicators of metal structures, electromechanical equipment and complete sets of equipment to be purchased for xx Reservoir Project are proposed by the design unit and confirmed by the chief engineer and director after review. All equipment is purchased by the owner's material supply department through public bidding, and factory supervision and inspection are carried out to ensure the completion of quality objectives. At present, the mechanical and electrical equipment and metal structures purchased in the hub area have been installed and played their due functions, and all the complete sets of equipment imported from * * Water Plant have been transported to the construction site.

3.3 Material supply quality control

The main technical indicators of raw materials required for the project are proposed by the design unit. For the owners of cement and steel with large consumption, the manufacturer is determined through bidding, the contractor puts forward the procurement plan, and the owner coordinates the supply, thus ensuring the quality of steel and cement. All raw materials of the project must have the manufacturer's warranty and certificate of conformity before entering the site, and can only be produced after passing the sampling inspection by the owner and supervisor.

3.4 Construction process quality control

The construction quality control of xx Reservoir Project adopts the programmed management mode of "taking unit project as the basis and process control as the means".

3.4. 1 Strictly abide by the contract and strengthen on-site management.

The quality control, quality assurance, requirements and explanations in the terms of the construction contract signed by the owner and the construction unit shall be implemented by the contractor in accordance with the supervision instructions. The contractor must adhere to the quality principle of "three inspection systems" in the construction process, and must be inspected and recognized by the site management personnel of the owner or the personnel on duty of the supervision engineer at the end of the working procedure. Without approval, the contractor shall not enter the next working procedure. For key construction procedures, a complete acceptance procedure and visa system will be established, and even supervisors will follow suit.

3.4.2 Implement quality responsibility and make site records.

The personnel on duty at the construction site supervise the contractor to carry out the construction according to the contract requirements in the form of standby, master every working procedure of their own supervision project, and adhere to the "five prohibitions". In order to master and control the engineering quality and know the engineering quality situation in time, the supervisor will inspect the elements of the construction process and make records on the construction site, which will be signed by both parties during the shift change, and the personnel on duty will be responsible for the completeness and authenticity of the records.

3.4.3 Strengthen mutual consultation and hold various meetings.

In order to coordinate the relationship between all parties in the construction, the owner's site engineering department holds a meeting of project site management personnel every day to check the daily progress of the project and the problems existing in the construction, and put forward suggestions for improvement. The supervision department will hold a production coordination meeting of the construction unit on the 5th and 25th of each month, presided over by the director, focusing on solving the construction interference problems that need to be solved urgently. The meeting will form a summary document, and the contractor will end it according to the decision of the engineer.

3.4.4 Improve the inspection system and attach importance to quality issues.

According to the detailed rules for the implementation of project quality management formulated by the supervision department, the responsibility for project quality is based on the principle of "whoever constructs is responsible". The contractor should strengthen the self-inspection work, be responsible for the project quality for life, resolutely implement the "one-vote veto on quality" system, and deal with quality accidents in strict accordance with the principle of "three misses" in accident handling.

4. Concluding remarks

Generally speaking, we have made some achievements in the quality management and control of xx reservoir project. However, it needs to be summarized in doing a good job in the whole process management, demanding quality, safety and efficiency from scientific management, and correctly handling the relationship between project quality and image progress.

4. 1 Leaders' attention is the key to quality management.

Leaders can do it with heart:

① Leaders should attach importance to quality, strengthen quality management and increase necessary investment;

(2) When there is a contradiction between schedule and quality, correctly handle the relationship between schedule and quality;

③ To truly implement the system of "quality one-vote veto", we should not only attach importance to quality in thought, but also attach importance to quality in action.

4.2 Contract management is the Bible to improve project quality.

A rigorous and accurate contract must put forward specific characteristics and related technical standards and methods for quality assurance and management, and the owner (supervisor) must have his own means of detection, monitoring and measurement. So that the supervision engineer is always in an active and positive position in management issues. In management, supervision engineers should also have the consciousness of linking quality problems with measurement and payment, and use this core management method to strengthen the quality management of contractors.

4.3 Class supervision is a measure to improve quality management.

Recording a large number of original data in detail is the fundamental measure to do a good job in engineering quality management. Accurate and timely geological sketch is not only the need to ensure the quality of engineering construction, but also provides a reliable basis for modifying the design.

4.4 Bidding is the basis to ensure the project quality.

Extend the quality management work to the tender evaluation stage, and the professional will carefully review the bidder's bidding documents, especially the detailed description of the construction method. Is the construction method reasonable? Does the input of equipment, manpower and other resources meet the needs of the project? In the process of implementation, pay close attention to implementation, which is an important material basis to ensure the quality and progress of the project.

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