GB/T 51033-2024Standard for construction and acceptance of pumping station (English PDF)

Foreword

This document was issued on 12 March 2024 by the State Administration for Market Regulation; Standardization Administration of the PRC and takes effect on 1 August 2024.

It is a GB/T standard: recommended rather than compulsory, but it is the text a Chinese reviewer applies.

The document runs to 100 pages in translation. The identification, the dates, the table of contents and the clauses reproduced on this page are taken from the standard itself.

1 Scope

GB/T 51033-2024 is the Chinese national standard for the construction and acceptance of water conservancy pumping stations. A large irrigation or drainage pumping station is an unusual piece of civil engineering: a heavy concrete substructure built in water, carrying rotating machinery whose alignment tolerances are measured in fractions of a millimetre, and the standard exists because those two things are built by different trades to different habits and have to end up in the same place. It covers the construction layout, the foundation and excavation works, the concrete and the civil structures, the installation of the steel structures, gates and trash racks, the installation of the pump units and their drives and auxiliary systems, the electrical and control works, commissioning and trial operation, and the acceptance at each stage with the technical archive that has to accompany it. It applies to the construction, extension and renovation of large and medium-sized irrigation and drainage stations and to small stations housing medium-sized or larger units. It takes effect on 1 August 2024.

1.0.1 This standard is prepared with a view to standardize the construction and acceptance of water pumping stations,unify the technical requirements,and achieve the objectives of safety,economy and convenient management.

1.0.2 This standard is applicable to the construction,extension and renovation of large and medium- sized irrigation and drainage pumping stations,and civil structures,installation of steel structures and acceptance small pumping stations in which medium-sized and above pump units are installed.

1.0.3 Construction planning shall be prepared by constractor prior to the commencement of the construction of the pumping station.

1.0.4 Any new technology,material,equipment and process to be used in pumping station construction shall be tested or validated.

1.0.5 For a renovation project,a special scheme for structure removal and environmental restoration should be prepared and the proceeding construction and acceptance activities shall be performed according to the scheme.

1.0.6 Work safety,occupational health and environmental protection involved in the construction of pumping stations shall comply with current professional standard SL 721 Guidelines for Construction

Safety Management of Water and Hydropower Projects,and water and soil conservation involved shall be carried out in compliance with the provisions of current national standard GB 50433 Technical

Standard ofSoil and Water Conservation for Produetion and Construction Projects.

1.0.7 A complete set of technical archives shall be established for the construction and acceptance of pumping station projects.The technical archive shall comply with the provisions of current national

standard GB/T 50328 Code for Putting Construction Project Documents into Records.

1.0.8 In addition to the requirements stipulated of this standard,the construction and acceptance of pumping stations shall also comply with requirements of the current relevant national standards.

2 Construction layout

2.1 General requirements

2.1.1 Construction layout shall be determined reasonably according to overall planning and local conditions based on the general layout of pumping station,structure type,construction conditions,and natural and social conditions of the project site.

2.1.2 For pumping station projects requiring river diversion during construction,the river diversion shall meet the requirements of current professional standard SL 303 Specifications for Construction Planning ofWater Resources and Hydropower Projects.

2.1.3 The major construction plants and temporary facilities shall be located in such a way as to avoid or mitigate the impact of flood during the construction period,to meet the flood control requirements determined by the design,and to avoid area with adverse geologic conditions or area with potential hazards.

2.1.4 The construction layout shall meet the requirement of rational use of land,convenience of both production and living,minimizing soil erosion and least occupation of basic farmland and ecological red line controlled areas.

2.1.5 The temporary construction facilities should be arranged in combination with the permanent house buildings so as to minimize the removal and relocation of temporary facilities during construction and the construction site to be occupied.Permanent buildings and existing facilities may also be used as temporary facilities during construction.

2.1.6 If the site conditions allow construction layout alternatives differing greatly from each other,a careful comparison shall be made to select the optimum scheme.If necessary,special demonstration shall be carried out.

2.2 Methods and requirements of construction layout

2.2.1 Construction layout shall be formed in stages according to construction needs,and shall meet the construction requirements of each stage.The range of construction site to be leveled should be determined according to construction layout requirements.

2.2.2 In the construction layout design,the layout of construction diversion works and the construction zones of the main works should be first determined,and then the layout of temporary facilities,internal and external transportation.When arranging construction,factors such as the location and area of available site,the combination of temporary structures and permanent facilities and others shall be coordinated and considered.The boundary of production zone should be closed,and when the production zone is connected to the construction management zone and the living zone,measures such as fence or barricade shall be used to separate them.

2.2.3 The construction layout may be designed to include the following functional zones: 1 Main works construction area.

2 Construction plant areas.

3 Material processing area.

4 Warehouses and stockyards.

5 Assembly area for electromechanical equipment and steel structures.

6 Stockpiling or disposal area.

7 Construction management and living quarters.

2.2.4 The main construction zone should include the construction sites of main structures such as inlet structure,pump house and outlet structure.During the construction period,eonstruction roads for earthwork excavation and backfilling,masonry works and concrete placing,as well as the assembly sites and transportation of steel structures,electromechanical equipment,shall be economically and reasonably considered.

2.2.5 The construction plant area should include working sites for aggregates production,steel bar fabrication,concrete production,water supply,power supply,wind supply,communications,mechanical repair and processing and others.The plants should be placed near the users and those to be served, occupy least arable land,avoid poor geological areas,and shall meet the requirements of flood control, firefighting,occupational health and environmental profection.

2.2.6 The material processing area shall be arranged in a wide and open place,with convenient transportation and good drainage.

2.2.7 Warehouses and stockyards shall possess good transportation conditions,and their layout shall conform to relevant national safety regulations on fire prevention and explosion prevention.

2.2.8 The assembly area for electromechanical equipment and steel structures should be arranged near the installation site.For large electromechanical equipment or steel Structures,the assembly area should be planned for easy transportation and installation in advanee.When the site nearby restrains, surrounding locations convenient for equipment transportation and installation may be selected. Reasonable connection between civil works construction and equipment installation shall be ensured, and the built structures and facilities from the construetion of civil works shall be fully utilized to arrange the assembly area economically and reasonably.

2.2.9 The spoil shall be dumped to the nearby landfill or the gullies,sloping lands and wastelands that meet environmental and water protection requirements.It shall be piled up in an orderly manner and covered with soil for landfill to avoid occupying cultivated land and economic forest land.The side slope of stockyard for reserved soil shall be stable and safe with good drainage facilities.The temporary stockyard should be located near the site where the spoil is to be used and shall have good conditions for excavation,loading and unloading,and transportation.

2.2.10 The construction management and living quarters should be located near the construction site with convenient transportation and communications and good sunshine,ventilation,water supply,and drainage,and shall avoid the areas prone to flood,landslide or debris flow.The standard of buildings shall be determined according to local topography,meteorology and the service life of the building.A permanent structure or prefabricated mobile house should be used for the building with a design service life of more than 5 years.

2.2.11 The scheme for access and hauling roads shall be determined according to the construction layout and construction schedule.The scheme for access roads should be made to ensure the links from the construction site to highway stations,railway stations and ports,and the roads shall be able to meet the requirements of transportation,loading and unloading of materials from outside during construction.The scheme for hauling roads shall be made to facilitate the transportation within the internal working area,to the material stockyard,disposal area, production area and living quarters of the construction site,and easy to connect with the external access road

3 Construction survey

3.1 General requirements

3.1.1 Before construction surveying,the following work shall be done:

1 The data related to the horizontal and vertical control and the topographic survey of the construction area shall be collected.

2 Engineering design drawings shall be consulted to clarify construction needs. 3 Setting-out data shall be prepared.

4 Construction survey plans shall be prepared.

3.1.2 Construction survey shall cover the followings:

1 According to overall layout of construction and relevant data requirements,the control network for construction shall be set up.

2 According to construction requirements of each stage,topographic survey or setting-out and checking for structure construction,and installation of steel structures and electromechanical equipment shall be carried out.

3 The geometry of the structures after completion shall be measured.

3.1.3 The construction plane coordinate system should be consistent with the coordinate system of design drawings,or an independent construction coordinate system that has a conversion relationship with the coordinate system of design drawing may be established according to the construction needs. The construction elevation system shall be consistent with the elevation datum of design drawings,and shall be linked with the nearest national benchmark as required.

3.1.4 The main precision indices of outline setting-out for pumping station construction shall be in accordance with those specified in Table 3.1.4.

Table 3.1.4 Main precision indices of outline setting-out for pumping station construction