Source: water conservancy project data management the construction quality assessment of water conservancy and hydropower projects should be carried out in the order from the low level to the high level, so that the quality can be well controlled in the construction process according to the construction process and relevant regulations from the micro level, and the project quality control and quality inspection can be carried out step by step from the low level to the high level
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The order of evaluation is: unit project, divisional project, unit project and project
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The construction quality level of water conservancy and hydropower projects is divided into “qualified” and “excellent”
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The qualified standard is the acceptance standard of the project, and the excellent grade is set for the quality of the project
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1、 The main basis of construction quality grade evaluation is (1) national and related industry technical standards
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(2) Unit engineering evaluation standard
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(3) Approved design documents, construction drawings, metal structure design drawings and technical conditions, design modification notice, equipment installation instructions and relevant technical documents provided by the manufacturer
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(4) The technical standards agreed in the project contract
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(5) The test, observation and analysis results during the construction period and trial operation period of the project
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2、 Construction quality standard 1
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Unit (process) engineering construction quality standard unit engineering is divided into divided process unit engineering and non divided process unit engineering according to process division
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To evaluate the construction quality of a unit project divided into working procedures, the construction quality of each working procedure should be evaluated first, and then the construction quality of the unit project should be evaluated on the basis of the procedure acceptance evaluation and the construction project entity quality inspection
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The construction quality acceptance evaluation of the unit project without division of process shall be conducted on the basis of the inspection items included in the unit project and the physical quality inspection of the construction project
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The inspection of various items, such as the construction quality of process and unit project, shall be carried out by combining the random distribution of points with the site designated area of the supervision engineer
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The construction unit shall be responsible for the preparation of the construction quality acceptance evaluation form and its reference data of the process and unit project
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The specification of the form shall be A4 paper (210mm × 297mm)
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The acceptance evaluation form shall be in quadruplicate and the reference data shall be in duplicate
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One copy of the acceptance evaluation form and its reference data shall be kept by the supervision unit, and the rest shall be kept by the construction unit
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(1) The construction quality evaluation standard of unit (process) project shall be implemented according to the unit project evaluation standard or the qualified standard agreed in the contract
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The qualification criteria of process construction quality assessment are as follows: ① the main control items and the inspection results shall all meet the requirements of this standard; ② for general items, more than 70% of the inspection points shall be qualified one by one, and the unqualified points shall not be concentrated; ③ the inspection data shall meet the requirements of unit engineering evaluation standard
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The standards for the construction quality assessment of the divided process unit project are as follows: ① the acceptance assessment of the construction quality of each process shall be all qualified; ② the inspection data shall meet the requirements of the unit project assessment standard
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The construction quality assessment standards of the unit project without division of working procedure are as follows: ① the main control items and the inspection results shall all meet the requirements of this standard; ② for general items, more than 70% of the inspection points shall be qualified one by one, and the unqualified points shall not be concentrated; ③ the inspection data shall meet the requirements of the unit project assessment standard
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(2) When the quality of unit (process) project fails to meet the qualified standard, it shall be handled in time
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The quality grade after treatment shall be re determined according to the following provisions: ① if all the work is reworked, the quality grade can be re evaluated; ② if it can meet the design requirements after reinforcement and appraisal by the design and supervision unit, the quality shall be evaluated as qualified; ③ if some quality indexes of the treated project still fail to meet the design requirements, the project legal person and supervision unit shall confirm that it can meet the safety requirements after design review If it can basically meet the design requirements after the confirmation of the project legal person, the supervisor and the design unit, the quality can be determined as qualified, but the quality defects shall be recorded according to the provisions
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2
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The quality standard of construction quality of divisional works (1) the quality of unit works included in the standard is all qualified
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The quality accidents and defects have been treated according to the requirements and passed the inspection
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(2) The quality of raw materials, intermediate products and concrete (mortar) specimens are all qualified, the manufacturing quality of metal structure and hoist is qualified, and the quality of mechanical and electrical products is qualified
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3
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The construction quality standard of unit project (1) all the divisional projects are qualified
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(2) The quality accident has been dealt with as required
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(3) The score rate of engineering appearance quality is more than 70%
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(4) The inspection and evaluation data of unit project construction quality are basically complete
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(5) During the construction period and trial operation period of the project, the analysis results of the observation data of the unit project meet the requirements of the national and industrial technical standards and the standards agreed in the contract
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4
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Construction quality standard of engineering project (1) the quality of unit project is all qualified
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(2) During the construction period and trial operation period of the project, the analysis results of the observation data of each unit project meet the requirements of the national and industrial technical standards and the standards agreed in the contract
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3、 Excellent standard of construction quality 1
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Excellent standard of unit project construction quality the excellent standard of unit project construction quality shall be implemented according to the evaluation standard of unit project and the excellent standard agreed in the contract
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All reworked unit projects can be rated as excellent if they meet the excellent standard
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The process of unit engineering is divided into main process and general process
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Among them: (1) the criteria for excellent construction quality evaluation are as follows: ① the main control items, and the inspection results shall all meet the requirements of this standard; ② for general items, 90% or more inspection points shall be qualified one by one, and the unqualified points shall not be concentrated; ③ the inspection data shall meet the requirements of unit project evaluation standard
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(2) The criteria for evaluating the excellent construction quality of the divided process unit project are as follows: ① the construction quality acceptance evaluation of each process should all be qualified, of which the excellent process should reach 50% or more, and the main process should reach the excellent level; ② the inspection data should meet the requirements of the unit project evaluation standard
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(3) The excellent construction quality evaluation standards of unit project without division of working procedure are as follows: ① the inspection results of main control items shall all meet the requirements of this standard; ② for general items, 90% or more inspection points shall be qualified one by one, and the unqualified points shall not be concentrated; ③ all inspection data shall meet the requirements of unit project evaluation standard
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2
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The excellent standard of construction quality of divisional works (1) all the unit works are qualified, of which more than 70% have reached the excellent level, and the excellent rate of main unit works and important concealed unit works (key part unit works) has reached more than 90%, and no quality accident has occurred
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(2) The quality of intermediate products is all qualified, and the quality of concrete (mortar) specimens reaches the excellent grade (when the number of specimens is less than 30, the quality of specimens is qualified)
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Raw material quality, metal structure and hoist manufacturing quality are qualified, and mechanical and electrical products are qualified
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3
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The excellent standard of unit project construction quality (1) the quality of all divisional projects is qualified, of which more than 70% reach the excellent level, and the quality of all main divisional projects is excellent, and no major quality accident has occurred in the construction
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(2) The quality accident has been dealt with as required
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(3) The score rate of appearance quality is more than 85%
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(4) The inspection and evaluation data of unit project construction quality are complete
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(5) During the construction period and trial operation period of the project, the analysis results of the observation data of the unit project meet the requirements of the national and industrial technical standards and the standards agreed in the contract
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4
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Excellent standards for construction quality of engineering projects (1) the quality of all unit projects is qualified, of which more than 70% of the quality of unit projects reaches the excellent level, and the quality of main unit projects is all excellent.
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