Quality assurance measures for drainage pumping station project?

Quality assurance measures of drainage pumping station project

1 Construction organization and its responsibilities

In order to ensure the "safe, high-quality, high-speed and economical" construction of this bid section, our company established a flexible and easy-to-coordinate project management department under the leadership of the company headquarters at the construction site according to the requirements of engineering construction, and the project manager was solely responsible for the construction of the project. The project manager consists of the deputy project manager and the chief engineer. See the construction organization chart for details. (Figure 5- 1)

Construction organization chart

Engineering department: preparation, modification and audit of construction scheme; Implement quality plan, make technical disclosure and do technical support; Put forward technical remedial measures for quality problems; Prepare for construction and organize construction scientifically. The engineering department has a survey team to do a good job in construction survey and lofting.

Ministry of Environmental Protection: responsible for environmental protection, including cultural relics protection, wildlife protection and environmental sanitation of living quarters.

Quality inspection department: implement the quality assurance manual and conduct training and education; Participate in quality design and deal with quality problems; Supervise and inspect the project quality; Assist the supervision team, class, group and other units to carry out the "three inspections" work; Responsible for filing management of working documents; Responsible for supervising the implementation of safety management regulations and correcting violations; Be responsible for formulating and revising various safety management regulations related to construction operation management.

Laboratory: responsible for sampling and testing the formula quality of concrete and mortar in this bid section.

Production Department: Under the direct leadership of the project manager, the production section chief is specifically responsible for supervising and guiding the construction teams of each work area and each specialty to carry out the construction according to the design drawings, and finish it as planned according to the approved overall progress plan, and is fully responsible for the project progress, operation quality and coordination among the construction teams of each work area and each specialty.

Ministry of materials and equipment: Responsible for the quotation management of materials and equipment, and the procurement, sorting, storage and distribution of all materials; Take full responsibility for the selection and management of materials, machinery and equipment used in the project.

Security department: responsible for the safety of the construction site. The safety engineer is responsible for establishing and perfecting the safety management network, supervising and inspecting the implementation of the responsibility of the construction safety system of each professional team, and inspecting the implementation of the safety measures of each professional construction team, and taking full responsibility for the construction safety of this project.

Finance department: ensure the construction materials, equipment and access to the site; Accurate provision of building materials and equipment; Ensure the quality of building materials and equipment; Strictly and regularly repair, maintain, inspect and update construction materials and equipment. Responsible for contract financial management and construction fund guarantee; Responsible for cost accounting, economic analysis and project settlement; Assist the project manager to handle daily work; Be responsible for mastering the work quality and training of appraisers; Responsible for safety work, handling safety accidents and administrative accidents.

Office: responsible for the reception work of the project department and the catering work of employees.

2 quality management institutions

Quality management organization (Figure 6-2)

Set up a quality management leading group with the project manager as the team leader and the project leader as the deputy team leader, responsible for the organization, promotion and decision-making of quality excellence. The project manager organizes the implementation of excellence projects and is responsible for them. The project department is equipped with full-time quality inspection engineers, and each construction team is equipped with quality inspectors to form a top-down quality management network.

Personnel allocation of quality inspection institutions

Team leader: Project Manager (1)

Deputy Team Leader: Technical Director (1)

Quality Inspection Engineer: Engineering Supervisor (1)

Quality inspector: 2 full-time quality inspectors in each work area.

Laboratory personnel: 2 full-time laboratory personnel.

The quality inspectors we are equipped with all hold the quality inspector certificate issued by the construction department, and have many years of practical work experience, strictly control the quality of all aspects of the project to ensure that the quality meets the requirements of the specification.

The following table shows the test equipment for earthwork, concrete and construction.

Name, model, specification and manufacturing quantity of equipment

Name of the factory, year of purchase, overhaul, where is it now and when will it arrive?

earth volume

Level DTS33 Wuhan 2000.6 Good Own 200 1.27

Total Station Hanzhong 1 Wuhan 2000.6 Haoziyou 200 1.27

Compactor DJ-79 1 Nanjing 2000.6 Good Own 200 1.27

Oven -30-500℃3 Nanjing 1998.2 Good self-owned 200 1.27

Balance TG628A8 Nanjing 1998.3 Haoziyou 200 1.27

40 thimble knife, owned by Nanjing 2000.4,2001.27.

Zhengzhou No.4 hydrometer was in good condition in March 2002.

Two specific gravity scales, Zhengzhou 2002.3, are very easy to own.

Viscometer 2 Tianjin 2002.3 has its own.

In April 2000, four thermometers in Tianjin were in good condition.

Two sets of automatic recorders Wuhan 200 1.3 are in good condition.

20 Pressure gauge Wuhan 200 1.3 is in good condition.

Concrete mortar test group 10 Wuhan 200 1 Haoziyou 200 1.27

Concrete test group 12 Wuhan 200 1 Haoziyou 200 1.27

Test site: a separate laboratory is set up in the project department to carry out engineering tests. The area is more than 50 square meters, which meets the requirements of construction test.

Inspection schedule of raw materials and intermediate products

Name of sampling rule sampling method for mandatory items in sampling group number

Cement batch ≤

100t 15 group (representative batch: 1429t) strength, stability, setting time and fineness.

(Grouting) Randomly take the same amount of cement from not less than 20 bags, and after mixing evenly, weigh not less than 12kg as a sample. The cement of the same variety and label produced by the same batch of cement plants at the same time should be a batch, with one entry and the same factory number. If it has been stored on site for more than three months, it must be rechecked before use, even if it has been tested when it comes into the site, it should be used according to the rechecking results.

Steel with a batch of ≤200 tons shall be inspected according to the specifications and models of ≤60 tons. Strength, tensile strength, shear strength and materials should be randomly sampled according to various models and specifications. The same manufacturer, the same batch, the same specification and the same model are a batch, which requires product certificate and ex-factory inspection report, as well as sampling inspection.

Coarse aggregate batch ≤400m3. Test 12 group (representing a batch of 5097m3). Particle gradation, silt content and needle-like particle content are in the upper, middle and lower layers of the material pile. Take 5 copies from each floor. After mixing evenly, weigh a sample of not less than 80kg. When sampling, the surface of the sampling site should be removed first. The same origin, the same specification and the same entry time are a batch.

A batch of fine aggregate ≤400m3 shall be divided into 6 groups (representing the batch of 2 163m3), and 8 samples with particle gradation, silt content and organic matter content shall be taken from the material pile on average. After mixing evenly, take a sample of not less than 80 kg. When sampling, the surface of sampling points should be removed first, and the sampling points should be evenly distributed. The same origin, the same specification and the same entry time are a batch.

7 groups (representing a batch of 24 19m3) of compressive strength tests were carried out when the block stone batch was ≤400m3.

Freezing resistance is randomly sampled at the construction site. Rock of the same kind and batch is a batch.

Other materials are determined according to the requirements of each sub-item, each sub-item and each sub-item. (Including decorative materials, chemical materials, etc. )

Mix proportion of concrete and mortar ***6 groups: C 10, C 15, C20, C25, M7.5, M 10, one group for each label.

Concrete and mortar specimens ≤ 100m3. According to the site construction conditions, determine the strength of different parts and different labels, and each shift shall not exceed 100m3. Make a batch, and sample a batch of mortar according to the masonry volume less than 250m3.

3 quality assurance system

4 Quality assurance measures

4. 1 Establish a scientific and perfect process of engineering quality assurance measures;

4.2 Establish a total quality management system

This project department implements PDCA (planning, implementation, inspection and treatment) total quality management system ① Planning stage: detailed construction scheme is formulated according to the specific conditions of the project ② Implementation stage: concrete implementation according to the formulated scheme. ③ Inspection stage: check the implementation effect. ④ Treatment stage: after inspection, the unqualified items will be treated. Such as: technical responsibility system, technical review system, quality assurance personnel qualification regulations, joint review of construction drawings system, construction technical disclosure system, management regulations of completed technical documents, construction progress recording and reporting system, quality rejection and reward and punishment system, etc.

4.3 Implementation of Project Quality Leadership Responsibility System

All leaders and project managers in our unit fully understand the connotation of "quality lifelong system". Engineering quality is a comprehensive reflection of various factors in engineering project construction. Problems in every link of management and every detail of construction activities such as construction may lead to quality problems or quality hidden dangers. The project quality involves all organizations and individuals involved in the project construction. In the process of construction, the overall quality assurance system of "the responsibility of the construction unit, the guarantee of the construction unit, the control of the supervision unit and the supervision of the government department" will be seriously implemented. For the construction unit, to ensure the project quality, we should not only emphasize the leadership responsibility of the project construction quality, but also further implement the professional responsibility of the professional and technical personnel involved in the project construction. Therefore, the project manager of this project pays attention to the quality personally, and the project manager intends to set up full-time quality inspectors, and each construction team sets up part-time quality inspectors, so that the quality party has the right to exercise the veto without interference from others. Ensure effective project quality leadership responsibility system.

4.4 Implement the post responsibility system for project quality.

In the process of construction, the post responsibility system for engineering quality shall be implemented, and "who cares about production, who cares about quality;" Who is responsible for the construction; The principle of "whoever operates will ensure the quality", who is responsible for the full-time quality inspector and who signs it, helps to implement the post responsibility system of engineering quality by means of economic rewards and punishments, ensures that the products produced in each link and post are qualified, and prevents the occurrence of rework, thus forming a good working atmosphere of "everyone has quality in mind and everyone values quality in mind".

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