Supervision paper of water conservancy construction project?

First, the state has promulgated laws, regulations and rules on quality, mainly including the Building Law of People's Republic of China (PRC), Regulations on Quality Management of Construction Projects and Regulations on Quality Management of Water Conservancy Projects. 2. The approved design documents, construction drawings and corresponding design change and modification documents are an important principle of quality control in the construction stage, and the approved design documents are undoubtedly the basis for quality control by the supervisor. However, from the perspective of strict quality management and quality control, the supervision unit should also participate in the design disclosure work organized by the construction unit before construction, understand the design intent and quality requirements, find drawing errors, and reduce quality hidden dangers. The third is the approved construction organization design, construction technical measures and construction scheme. Construction organization design is a planning and guiding document for contractors to prepare for construction and guide on-site construction. The site layout, personnel organization and construction equipment configuration, technical requirements of various projects, construction procedures and techniques, construction methods and technical guarantee measures, quality inspection methods and technical standards are specified in detail. Before the project starts, the construction contractor must put forward the construction organization design of the contracted project and submit it to the supervisor for review. Fourthly, the current technical specifications, construction process specifications, acceptance specifications and evaluation procedures of the state and industry (or ministerial level) cited in the contract, and the current technical specifications and operation procedures of the state and industry (or ministerial level) are the criteria for establishing and maintaining normal production order and working order. It is also a unified code of conduct for relevant personnel. It is a summary of engineering construction experience, which is closely related to quality control and must be strictly observed. 5. The quality basis of raw materials, semi-finished products and components quoted in the contract, the product technical standards of cement, cement products, steel, stone, lime, sand, waterproof materials, building hardware and other related products, and the technical standards of inspection and sampling methods such as cement near reading inspection method, cement mortar strength inspection method, sand quality standard inspection method for ordinary concrete and hydraulic concrete test regulations. Sixth, the contract terms about quality in the engineering contract signed by the employer and the construction contractor. The construction contract contains the rights and obligations of the owner and the construction contractor on quality control, and all parties must fulfill their respective commitments. Seventh, the equipment installation instructions and related technical standards provided by the manufacturer. Equipment installation instructions and related technical standards provided by manufacturers are important technical documents that must be followed in equipment installation in construction and installation contracts, and are also the basis for supervision to check and control the quality of contractor's equipment installation.

Supervision's review of the starting conditions of the contract project

1. Work that the employer should prepare.

1. Provide construction drawings and documents for the first batch of construction projects. The Employer shall provide the Contractor with the existing hydrogeological investigation data related to this project and the drawings that shall be provided by the Employer before the project starts. 2. Handover of survey datum points. The employer (or supervisor) shall provide the contractor with survey datum points, datum lines, leveling points and written materials within the time limit specified in the technical terms. 3. Construction land and necessary traffic conditions. In order to enable the contractor to enter the construction site as soon as possible and start the construction of the main project, the employer shall provide roads, power supply, water supply, communication and other conditions as stipulated in the contract. The organizer shall assist the employer to do a good job of "four links and one leveling" in the construction site, do a good job of land acquisition and demolition in advance, and solve the contractor's occupation and access to the construction site. So that the construction contractor can enter the construction site as soon as possible and start the project construction. 4. Pay the advance payment for the first project. Engineering advance payment refers to a sum of money paid by the employer to the contractor in advance according to the contract after the signing of the engineering construction contract for the contractor to prepare for the construction.

2. The work that the contractor should prepare.

1. Review the organization and personnel of the contractor. The contractor shall, before the commencement of the contract project, submit to the supervisor the on-site organization chart of the project contract implementation and the main qualifications of the main post personnel, and the supervisor shall review it. The supervision organization shall conduct a careful review under the auspices of the chief supervision engineer, requiring the construction unit to earnestly fulfill its bidding commitments, requiring the organization to be complete, and the technical and management personnel to be familiar with their respective professional technologies, have similar engineering experience and be competent for the construction of the contracted projects. 2. Review the qualification of the project manager of the construction unit. The project manager is the full-time person in charge of the construction unit at the construction site. He must hold the post certificate of project manager and have the ability to perform the contract duties on site. 3. Review the qualifications of employees and workers of the construction unit. Managers, technical posts and workers with special types of jobs with corresponding post qualifications must hold the qualification certificate of unified examination or examination by the state or relevant departments, and can only take up their posts after passing the examination by the supervision institutions. The qualification of unapproved personnel shall not be confirmed, and the construction unit shall be required to replace incompetent or dereliction of duty personnel in time. 4. Check the contractor's laboratory and experimental measuring equipment. The supervisor requires that the testing laboratory of the construction unit must have testing means and qualifications suitable for the contracted project, and meet the requirements of contract documents and technical specifications, procedures and standards. The supervisor shall supervise and inspect the laboratory established by the contractor at the construction site, including experimental equipment and supplies, the number and professional level of experimental personnel, and verify the test methods and procedures. Qualification documents of testing laboratories, staffing of testing laboratories, grading inspection certificates of instruments and meters, etc. 5. Check the contractor's construction equipment. Before construction, the supervision unit shall check whether the quantity, specifications, performance and mobilization time of the contractor's construction equipment meet the requirements of the construction contract, and the supervision institution shall urge the contractor to ensure that the construction equipment enters the site in time as planned according to the time stipulated in the construction contract. And evaluate and recognize the construction equipment entering the site, prohibit the unqualified equipment from being put into use and require the contractor to replace it in time. 6. Review of datum points, datum lines and leveling points. The supervisor shall provide the contractor with datum points, datum lines, leveling points and their plane data within the time limit stipulated in the contract, and the contractor shall set up his own construction control network according to the datum points, datum lines, national surveying and mapping standards and the accuracy requirements of this project. And submit the data to the supervisor for approval. After the project is completed, it will be handed over to the owner intact. Under the supervision of the supervisor, or sampling and retest together, the supervisor can use the contractor's construction control network at any time. 7. Inspection of raw materials and components. Including the preparation of aggregate system, concrete mixing system and auxiliary facilities such as roads, water supply, power supply and gas supply. The configuration of aggregate production system is to calculate the demand of various specifications of concrete orthopedics according to the concrete consumption in engineering design drawings and the grading ratio of various concrete, mainly considering the daily maximum strength and monthly maximum strength, and determine the configuration of system equipment. The sand and gravel plant should be located near the main material yard, and the water pressure and quality of construction water, domestic water and fire water should comply with the corresponding regulations. The maximum power load of each construction stage shall be calculated by the demand coefficient method.

Supervisor's review of construction drawings and construction organization design

Construction drawing review

The construction drawing is a detailed drawing and description of the size, layout, material selection, structure, interrelation, construction and installation quality requirements of buildings, equipment, pipelines and other engineering objects, and is the direct basis for guiding construction. The audit or approval shall be completed within the time stipulated in the construction contract, and signed and sealed after confirmation. The contents of the review include: whether the construction drawing has been formally signed by the design unit, whether the drawings and specifications are complete, whether they are consistent with the bidding drawings, and whether the underground structures, obstacles and pipelines have been identified and clearly marked. Whether the technical requirements in the construction drawing are feasible. Whether there are contradictions in the plane, elevation and section of the drawings of various disciplines, whether the geometric dimensions, plane position and elevation are consistent, and whether there are omissions in labeling. After the drawings are confirmed to be correct, the supervisor will sign and issue them to the construction contractor, and the construction drawings will come into effect, that is, the construction drawings will formally become the contents of the contract, and the construction contractor can carry out the construction according to the drawings.

Audit of construction organization design

The construction organization design in the construction stage is an important document to guide the construction. After the construction unit won the bid and signed the contract, the construction organization design became an important part of the construction contract documents. After receiving the notice of commencement, the construction unit shall further submit a more complete and specific construction organization design according to the time stipulated in the contract, and obtain the approval of the supervision institution. When reviewing the construction organization design, the supervisor should pay attention to the following aspects: first, whether the model, type, performance and quantity of the construction equipment selected by the contractor can meet the requirements of construction progress and quality; Second, whether the proposed construction method and scheme are technically feasible and whether the quality is guaranteed; Third, whether the construction process is balanced or not, and whether there will be slowdown due to the unbalanced process; Fourth, whether the setting of quality control points is correct, and whether its inspection methods, inspection frequency and inspection standards meet the requirements of contract technical specifications; Fifth, whether the technical guarantee measures and construction safety technical measures are feasible. The supervisor puts forward opinions and suggestions after carefully examining the construction organization design measures of the construction contractor. After revising the construction organization design and technical measures, the contractor shall put forward new construction organization design and technical measures, and submit them to the supervisor for re-examination until approval. After the approval of the construction organization design and technical measures, the contractor shall carry out the construction in strict accordance with the approved construction organization design and technical measures. In the process of construction, the supervisor has the right to check the implementation of the approved construction organization design and technical measures at any time. If the construction contractor is found to be in violation of regulations, the supervisor should first verbally point out the contractor's violation of construction organization design and technical measures, and then point it out in writing. Require timely correction. If the contractor insists on not making corrections, the supervisor has the right to issue a suspension notice to stop its construction.

Quality control of raw materials and engineering equipment

Quality control of a pair of raw materials

Engineering is an entity composed of various building materials, auxiliary materials, finished products, semi-finished products, components and engineering equipment. The quality of these materials and components and their quality control work have a very important impact on the engineering quality. The supervision engineer should strictly follow the quality control procedures of materials and components, and review the application for purchasing and ordering materials, mainly including whether the purchased materials meet the design needs and requirements. After the materials enter the site, the supervision engineer shall review the quality assurance materials submitted by the construction unit and send supervisors to count the materials of the construction unit. Before the materials are used, the supervision engineer shall review the material test report and materials submitted by the construction unit to confirm the quality of the visa materials. The construction unit shall conduct on-site sampling under the supervision of the supervision unit when conducting quality inspection on test blocks, test pieces and related materials involving structural safety. Before the materials are formally used in construction, the construction unit shall organize field tests and prepare test reports. These materials can only be formally used in construction after the field test is qualified and the test report and materials are reviewed and confirmed by the supervision engineer.

Second, the quality control of engineering equipment

According to the contract, after the engineering equipment arrives at the site, the contractor shall be responsible for receiving the engineering equipment at the site, and then the supervisor shall conduct acceptance. The inspection and acceptance of engineering equipment includes: inventory inspection; Quality assurance document review; Inspection of varieties, specifications and models; Quality confirmation inspection, etc. The buyer will send all the quality assurance documents put forward by the supplier to the supervisor in charge of quality inspection for review.

Quality control of construction process by supervision

Engineering quality is formed in the process of construction, not tested. The construction process of an engineering project consists of a series of interrelated and mutually restrictive working procedures, and the quality of working procedures is the foundation, which directly affects the overall quality of the engineering project. It is necessary to control the quality of the construction process of the project. When drafting the quality control work plan, the supervisor should give detailed consideration.

Select a quality control point.

The supervisor shall urge the construction contractor to comprehensively and reasonably select the quality control points before construction. And review the quality control points set up by the construction contractor and the control measures taken. When necessary, the quality control implementation process of the construction contractor shall be tracked, inspected or supervised to ensure the implementation quality of quality control points.

Second, set the object of quality control points

Some processes or operations must strictly follow each other's order and technical parameters. Some technical parameters are closely related to quality and must be strictly controlled, such as the dosage of additives and the water-cement ratio of concrete. There are also common quality problems, unstable quality, processes with many quality problems, and key processes. 3. The supervisor who sets quality inspection points should urge the construction contractor to select quality control points comprehensively and reasonably before construction, and divide the quality control points into quality inspection witness points and quality inspection shutdown waiting points. For some important quality inspection points, the supervisor shall conduct inspection, which can only be carried out when the supervisor is present. The contractor must notify the supervisor in writing in advance, and the construction can only be carried out when the supervisor is present for inspection and supervision.

Quality control of equipment installation process by supervision

Review of installation procedures and program supervision

Engineers should supervise and control the quality of the installation process, and check and accept each unit, decentralized project and unit project during the installation process. Major mechanical and electrical equipment installation works shall be reviewed by the supervision engineer before commencement. Through the review, the installation procedures and schemes can be optimized to avoid rework or delay in the construction period due to improper installation procedures and schemes.

2. Unpacking acceptance of equipment

After the equipment arrives at the construction site, the supervision, installation, project legal person and equipment factory representative will conduct unpacking inspection and acceptance, and handle the problems in time when found. When unpacking inspection, check the appearance of mechanical and electrical equipment, check the product model and parameters, check the ex-factory certificate, ex-factory experimental report, technical specifications and other materials, check special tools and spare parts, and register defective and unqualified products.

Acceptance of equipment foundation

Before the equipment is installed in place, the installation unit should check the equipment to ensure the smooth installation, and generally check the geometric size and position of the foundation. For the foundation of large equipment, the settlement observation records provided by the civil engineering department should be reviewed. If there is no settlement observation record, the foundation should be pre-pressed to avoid foundation subsidence and inclination after equipment installation. According to the requirements of design drawings, mainly check the correctness of the quantity and position of all embedded parts, including the size, position, elevation, flatness and quality of the equipment foundation section, and whether the strength of foundation concrete meets the design requirements.

Four devices in position

Correctly find out and delimit the baseline of equipment installation, and then put the equipment in the correct position according to the baseline, including vertical and horizontal position and elevation. After each equipment is installed and positioned, it shall be strictly rechecked to ensure that the elevation, center and tightness of the horizontal bolt adjusting gasket of the equipment fully meet the technical requirements. If the inspection results fully meet the installation technical standards and are inspected by the supervision unit, secondary grouting can be carried out.

5. Equipment installation and acceptance

Another important test of equipment installation quality is the inclination of the axis, that is, the coaxiality of two connected rotating equipment. In the process of equipment installation supervision, the accuracy of measuring instruments used by the installation unit should be required and checked, and the machining accuracy of semi-coupling should be copied during installation. Before installation, the installation unit shall be required to submit the test record form in advance to check whether the test items are complete and whether the tolerance standard values meet the specification requirements. Quality control in construction stage is an important core content of construction supervision, and it is also the focus of project quality control. The quality control of the project construction by the supervisor is to effectively supervise and manage the project construction according to the rights entrusted by the contract and around the above-mentioned main factors affecting the project quality.

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