标准编号:	NB/T 35097.2-2017
中文名称:	水电工程单元工程质量等级评定标准 第2部分：金属结构及启闭机安装工程
英文名称:	Quality Degree Evaluate Standard of Unit Works in Hydropower Proj ects Part 2:Installation of Hydraulic Steel Structure and Hoists
行业分类:	NB    能源行业标准
发布机构:	国家能源局
发布日期:	2017-11-15
实施日期:	2018-3-1
标准状态:	现行
替代旧标准:	SDJ 249.2-1988 水利水电基本建设工程单工程质量等级评定标准（二）金属结构及启闭机机械设备安装工程
翻译语言:	英文
文件格式:	PDF
中文字符数:	100000 字
翻译价格(元):	9000.00 元
交付时间:	付款后 1 个工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.



In accordance with the requirements of Notice of National Development and Reform Commission Office on Printing and Publishing Professional Standard Project Plan in 2008 (FAGAIBANGONGYE [2008] No. 1242), the standard drafting group has revised this standard through the extensive investigation and study, careful summarization of practical experience and on the basis of widely soliciting for opinions.



The main technical contents of this standard are: project classification and quality evaluation, penstock manufacture, penstock installation, installation of plain gate, installation of radial gate, installation of mitre gate, installation of trash rack, installation of fixed winch hoist, installation of mobile hoist, installation of hydraulic hoist and installation of screw type hoist.



The main technical contents revised in this standard are as follows:



——the "excellent" grade evaluation standard of unit works is revised.



——the clause of "project classification and quality evaluation" is added.



——the quality evaluation standard of unit works is revised.



——the installation quality evaluation standard of plain roller-chain gate is supplemented.



——the installation quality evaluation standard of eccentric-hinged compression-type or pressure-filled radial gate is supplemented.



——the original "bridge type hoist installation work" is deleted.



——the original "hoist track installation work" is deleted.



——the original “Annex 1 Penstock manufacture works” is deleted.



The National Energy Administration is in charge of the administration of this standard, which was proposed by and is under the routine management of the Hydropower and Water Resources Planning and Design General Institute. The Technical Committee for Hydropower Steel Structure and Hoists of Energy Industry of the Standardization Administration of China is in charge of the explanation of specific technical contents. In case of any comment or suggestion in the process of implementing this standard, please send it to the Hydropower and Water Resources Planning and Design General Institute (Address: No. 2, North Alley, Liupukang, Xicheng District, Beijing, 100120).



Chief drafting organization of this standard: Sinohydro Bureau 8 Co., Ltd.



Participating drafting organizations of this standard: Mechanical and Electrical Company of SinoHydro Bureau 8 Co., Ltd. and Tianjin Institute of Hydroelectric and Power Research.



Chief drafters of this standard: Fan Yilin, Wang Qimao, Zeng Hui, Wang Jianwen, He Yinghong, Du Yi, Li Dongsheng, Zhang Jiang and Zhang Sheng.



Main examiners of this standard: Lin Zhaohui, Chen Hong, Hu Baowen, Fang Hanmei, Yao Changjie, Zhang Weiming, Zhao Yongping, Li Lili, Wan Tianming, Luo Wenqiang, Jin Xiaohua, Liao Yongping, Yu Xiquan, Long Zhaohui, Yang Qinghua, Li Lin and Li Shisheng.





Contents



Foreword i

1 General provisions 1

2 Terms and symbols 1

2.1 Terms 1

2.2 Symbols 2

3 Project classification and quality evaluation 2

3.1 Project classification 2

3.2 Quality evaluation 4

4 Penstock manufacture 5

4.1 Quality evaluation conditions 5

4.2 Inspection items and standard for evaluation 6

5 Penstock installation 17

5.1 Quality evaluation conditions 17

5.2 Evaluation of unit works for installation of embedded penstock 17

5.3 Evaluation of unit works for installation of exposed penstock 20

6 Installation of plain gate 21

6.1 Quality evaluation conditions 21

6.2 Evaluation of unit works for installation of embedded parts 22

6.3 Evaluation of unit works for installation of gate leaves 22

7 Installation of radial gate 35

7.1 Quality evaluation conditions 35

7.2 Evaluation of unit works for installation of embedded parts 35

7.3 Evaluation of unit works for installation of gate leaves 36

8 Installation of mitre gate 44

8.1 Quality evaluation conditions 44

8.2 Evaluation of unit works for installation of embedded parts 44

8.3 Evaluation of unit works for installation of gate leaves 45

9 Installation of trash rack 47

9.1 Quality evaluation conditions 47

9.2 Evaluation of unit works for installation of embedded parts and trash rack leaves 48

10 Installation of fixed winch hoist 49

10.1 Quality evaluation conditions 49

10.2 Evaluation of unit works for installation of fixed winch hoist 50

11 Installation of mobile hoist 52

11.1 Quality evaluation conditions 52

11.2 Evaluation of unit works for installation of mobile hoist 53

12 Installation of hydraulic hoist 63

12.1 Quality evaluation conditions 63

12.2 Evaluation of unit works for installation of hydraulic hoist 63

13 Installation of screw type hoist 66

13.1 Quality evaluation conditions 66

13.2 Evaluation of unit works for installation of screw type hoist 66

Annex A Quality evaluation forms for unit works 68

Explanation of wording in this standard 70

List of quoted standards 71

Explanation of provisions 72









Quality Grade Evaluation Standard of Unit Works of Hydropower Projects - Part 2: Installation of Hydraulic Steel Structures and Hoists



1 General provisions



1.0.1 This standard is prepared with a view to regulating the quality grade evaluation of unit works for Installation of Hydraulic Steel Structures and Hoists of Hydropower Projects, so as to ensure quality, safety and applicability, technology advancement and economic rationality.



1.0.2 This standard is applicable to the quality grade evaluation of the installation of steel gate, trash rack and hoist of hydropower projects as well as the unit works for manufacture and installation of penstock.



1.0.3 The quality evaluation of unit works shall be carried out after the results of the inspection items meet the requirements of corresponding acceptance specifications, and shall be provided with complete, full and accurate construction records.



1.0.4 The quality grade evaluation of unit works for installation of hydraulic steel structures and hoists of hydropower projects shall not only comply with the requirements of this standard, but also comply with those stipulated in the current relevant national standards.



2 Terms and symbols



2.1 Terms



2.1.1 unit works

the minimum complex unit of one or several work type(s) of the installation of hydraulic steel structures and hoists of hydropower projects divided according to the design structure, construction deployment and quality evaluation requirements, which is the basic unit for construction quality evaluation



2.1.2 partitioned project

the installation project which can be combined to exert a certain function in a structure or building



2.1.3 unit projects

the projects consisting of several partitioned projects and provided with independent construction conditions or independent functions



2.1.4 main items

the inspection items having a significant effect on the safety, use function and environmental protection of unit works, which are marked by △ in the evaluation forms of this standard



2.1.5 general items

inspection items other than main items



2.1.6 qualified items

the main items with 100% of the measured points meeting the qualified standard, or general items with more than 90% of the measured points meeting the qualified standard, while the measured values of the remaining points shall not be greater than 1.2 times the permissible deviation of the qualified standard



2.1.7 excellent items

the qualified items, of which more than 90% of the measured points have reached the excellent level



2.2 Symbols



P Sa——the surface treatment grade of local blast-cleaning in case of site construction;



RZ——the surface roughness symbol, indicating the sum of the mean of five maximum contour peak heights and that of five maximum contour valley depths within the sampling length;



Sa——the grade of derusting through blasting or ejecting in case of factory manufacture;



δ——the plate thickness or pipe wall thickness;



△——the symbol of a main item.



3 Project classification and quality evaluation



3.1 Project classification



3.1.1 The quality grade evaluation items of hydropower project should be classified into unit works, partitioned projects and unit projects.



3.1.2 The quality grade evaluation items of installation of hydraulic steel structures and hoists should be classified according to the requirements of Table 3.1.2. 

Table 3.1.2 Classification of quality grade evaluation items of Installation of Hydraulic Steel Structures and Hoists

Unit projects Partitioned projects Unit works

Spillway projects Installation of gate and hoist Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of embedded part of radial gate

Installation of radial gate leaf

Installation of fixed winch hoist

Installation of hydraulic hoist

Installation of screw type hoist

Installation of mobile hoist

Spillway tunnel (hole) project Installation of gate and hoist Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of embedded part of radial gate

Installation of radial gate leaf

Installation of fixed winch hoist

Installation of hydraulic hoist

Installation of screw type hoist

Installation of mobile hoist

Overflow dam (hole) project Installation of gate and hoist Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of embedded part of radial gate

Installation of radial gate leaf

Installation of fixed winch hoist

Installation of screw type hoist

Installation of hydraulic hoist

Installation of mobile hoist

Dam water diversion project Installation of gate and hoist, installation and manufacture of penstock and installation of trash rack Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of hydraulic hoist

Installation of mobile hoist

Installation of embedded part of trash rack

Installation of trash rack leaf

Manufacture of a single joint or a penstock segment; installation of penstocks in a concrete-poured segment or a position, such as installation of bend pipe, inclined pipe and horizontal pipe

Diversion tunnel project Installation of gate and hoist, installation and manufacture of penstock and installation of trash rack Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of hydraulic hoist

Installation of mobile hoist

Installation of fixed winch hoist

Installation of embedded part of trash rack

Installation of trash rack leaf

Manufacture of a single joint or a penstock segment; installation of penstocks in a concrete-poured segment or a position, such as installation of bend pipe, inclined pipe and horizontal pipe

Power plant project Installation of gate and hoist Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of fixed winch hoist

Installation of hydraulic hoist

Installation of mobile hoist

Ship lock project Installation of gate and hoist Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of embedded part of radial gate

Installation of radial gate leaf

Installation of embedded part of mitre gate

Installation of mitre gate leaf

Installation of fixed winch hoist

Installation of hydraulic hoist

Installation of mobile hoist

Diversion project Installation of gate and hoist Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of hydraulic hoist

Installation of fixed winch hoist

Water intake project Installation of gate, hoist and trash rack Installation of embedded part of plain gate

Installation of plain gate leaf

Installation of hydraulic hoist

Installation of fixed winch hoist

Installation of mobile hoist

Installation of embedded part of trash rack

Installation of trash rack leaf



3.2 Quality evaluation



3.2.1 The quality evaluation grades of unit works are classified into qualification grade and excellent grade.



3.2.2 A unit work will be evaluated as qualified when all of its testing items meet the requirements of qualified items.



3.2.3 A qualified unit work will be evaluated as excellent when the excellent rate of its main or general items is above 70%.



3.2.4 The quality grade evaluation of unit works shall comply with the following conditions:



1 All construction items of a unit work have been completed and accepted.



2 All quality-related defects have been treated or provided with treatment opinions approved by the supervision organization.



3.2.5 The quality grade evaluation of unit works shall be carried out according to the following procedures:



1 The construction organization conducts the self-inspection for the construction quality of unit works completed, and apply for acceptance by the supervision organization after passing the self-inspection.



2 After receiving the application, the supervision organization shall conduct the sampling re-inspection and the acceptance. The construction quality of important concealed unit works and key part unit works shall be jointly accepted by a team composed of the representatives of organizations such as the construction, design, supervision and construction organizations.



3 The unit works shall be subjected to quality grade evaluation after passing the acceptance.



3.2.6 The quality grade evaluation of unit works shall include the following data:



1Procedure documents such as construction drawings, construction schemes, construction records and acceptance data.



2 Quality inspection record form and quality grade evaluation form for unit works filled in by the construction organization.



3 The sampling re-inspection data on which quality opinions are signed by the supervising engineer.



3.2.7 The format of quality evaluation form for unit works should comply with the requirements of Annex A hereof.



4 Penstock manufacture



4.1 Quality evaluation conditions



4.1.1 Before being delivered, the penstock shall be inspected according to the current national standard GB 50766 Code for manufacture installation and acceptance of steel penstocks in hydroelectric and hydraulic engineering, and subjected to delivery recording as well as quality grade evaluation for unit works in accordance with those specified in Clause 3.2.



4.1.2 The unit division for quality grade evaluation of penstock manufacture shall comply with the following requirements:



1 For straight pipes, bend pipes and gradient pipes, a joint or a segment is regarded as a unit.



2 An expansion joint is regarded as a unit.



3 A bifurcation is regarded as a unit.



4.2 Inspection items and standard for evaluation



4.2.1 The quality evaluation standard of penstock circumference and joint length shall comply with the requirements of Table 4.2.1.



 

Table 4.2.1 Quality evaluation standard of penstock circumference and joint length (mm)

Item No. Item Quality standard Remarks

Qualified Excellent

△1 Difference between the actual circumference and the design circumference ±0.003D, with absolute value ≤24 ±0.0025D, with absolute value ≤20 Circumferential installation seam without backing

±0.103D, with absolute value ≤12 ±0.0025D, with absolute value≤10 Circumference of backing of the V-groove at circumferential installation seam

△2 Circumference difference of adjacent pipe joints δ<10 ≤6 ≤5 Circumferential installation seam without backing

≤6 ≤5 Circumference of backing of the V-groove at circumferential installation seam

δ≥10 ≤10 ≤9 Circumferential installation seam without backing

≤8 ≤7 Circumference of backing of the V-groove at circumferential installation seam

3 Difference between the length of a single-joint penstock and the design length ≤5 ≤4 —



Note: D——the inside diameter of the circular-section penstock, mm.



4.2.2 The quality evaluation standard of flatness of penstock orifice shall comply with the requirements of Table 4.2.2.



Table 4.2.2 Quality evaluation standard of flatness of penstock orifice (mm)

Item No. Item Quality standard

Qualified Excellent

1 Flatness of penstock orifice D≤5000 ≤2 ≤2

D>5000 ≤3 ≤2



4.2.3 The quality evaluation standard of pipe joint section shape shall comply with the requirements of Table 4.2.3.



Table 4.2.3 Quality evaluation standard of pipe joint section shape (mm)

Section shape Quality standard Remarks

Qualified Excellent

Circular Roundness ≤0.003D and ≤30 Roundness ≤0.003D and ≤25 Circumferential installation seam without backing

When the penstock is equipped with a stiffening ring, the difference between the maximum and minimum diameters of the pipe orifice at the same end is not greater than 4 When the penstock is equipped with a stiffening ring, the difference between the maximum and minimum diameters of the pipe orifice at the same end is not greater than 3 For the V-groove with backing at circumferential installation seam, at least 4 pairs of diameters are measured at the pipe orifice of each end

Oval The permissible length deviation of the major axis a and the minor axis b of the oval is ±0.003a or ±0.003b, of which, the absolute value is not greater than 6 The permissible length deviation of the major axis a and the minor axis b of the oval is ±0.003a or ±0.003b, of which, the absolute value is not greater than 5 —

Rectangle The permissible length deviation of the long side A and the short side B is ±0.003A or ±0.003B, of which, the absolute value is not greater than 6 and the diagonal difference is not greater than 6 The permissible length deviation of the long side A and the short side B is ±0.003A or ±0.003B, of which, the absolute value is not greater than 5 and the diagonal difference is not greater than 5. —

Regular-polygon The permissible deviation of circumcircle diameter is ±6; the difference between the maximum and minimum diameters is not greater than 0.003D and not greater than 8 The permissible deviation of circumcircle diameter is ±6; the difference between the maximum and minimum diameters is not greater than 0.003D and not greater than 7 —

Non-circular The local flatness of penstock is not greater than 4 per meter. The local flatness of the penstock is not greater than 3 per meter. —



4.2.4 The installation quality evaluation standard of the support ring, stiffening ring, thrust ring and dam ring shall comply with the requirements of Table 4.2.4.



 

Table 4.2.4 Installation quality evaluation standard of the support ring, stiffening ring, thrust ring and dam ring (mm)

Item No. Item Quality standard Sketch

Support ring Stiffening ring, thrust ring and dam ring

Qualified Excellent Qualified Excellent

1 Perpendicularity a of support ring or stiffening ring to pipe wall a≤0.01H and ≤3 a≤0.02H and ≤5

2 Perpendicularity b of the plane formed by support ring or stiffening ring to the pipe axis b≤0.002D and ≤6 b≤0.004D and ≤12

3 Permissible deviation of spacing C between two adjacent ring plates ±10 ±30

For each item listed above, eight points shall be measured per circle



Note: For each item in the sketch, eight points shall be measured per circle.



4.2.5 The quality evaluation standard of the radial misalignment of longitudinal seam and circumferential seam shall comply with the requirements of Table 4.2.5.



Table 4.2.5 Quality evaluation standard of the radial misalignment of longitudinal seam and circumferential seam (mm)

Item No. Item Quality standard

Qualified Excellent

△1 Radial misalignment of longitudinal seam 0.1δ and ≤2.0 0.1δ and ≤1.5

2 Radial misalignment of circumferential seam δ≤30 0.15δ and ≤3.0 0.1δ and ≤2.0

30<δ≤60 ≤0.1δ ≤0.08δ

δ>60 ≤6.0 ≤5.0

△3 Misalignment of composite stainless steel plate weld 0.1δ and ≤1.5 0.1δ and ≤1.0



4.2.6 The quality evaluation standard of the post-welding deformation of longitudinal seam shall comply with the requirements of Table 4.2.6.

Foreword i
1 General provisions
2 Terms and symbols
2.1 Terms
2.2 Symbols
3 Project classification and quality evaluation
3.1 Project classification
3.2 Quality evaluation
4 Penstock manufacture
4.1 Quality evaluation conditions
4.2 Inspection items and standard for evaluation
5 Penstock installation
5.1 Quality evaluation conditions
5.2 Evaluation of unit works for installation of embedded penstock
5.3 Evaluation of unit works for installation of exposed penstock
6 Installation of plain gate
6.1 Quality evaluation conditions
6.2 Evaluation of unit works for installation of embedded parts
6.3 Evaluation of unit works for installation of gate leaves
7 Installation of radial gate
7.1 Quality evaluation conditions
7.2 Evaluation of unit works for installation of embedded parts
7.3 Evaluation of unit works for installation of gate leaves
8 Installation of mitre gate
8.1 Quality evaluation conditions
8.2 Evaluation of unit works for installation of embedded parts
8.3 Evaluation of unit works for installation of gate leaves
9 Installation of trash rack
9.1 Quality evaluation conditions
9.2 Evaluation of unit works for installation of embedded parts and trash rack leaves
10 Installation of fixed winch hoist
10.1 Quality evaluation conditions
10.2 Evaluation of unit works for installation of fixed winch hoist
11 Installation of mobile hoist
11.1 Quality evaluation conditions
11.2 Evaluation of unit works for installation of mobile hoist
12 Installation of hydraulic hoist
12.1 Quality evaluation conditions
12.2 Evaluation of unit works for installation of hydraulic hoist
13 Installation of screw type hoist
13.1 Quality evaluation conditions
13.2 Evaluation of unit works for installation of screw type hoist
Annex A Quality evaluation forms for unit works
Explanation of wording in this standard
List of quoted standards
Explanation of provisions

1 总 则
1.0.1 为了规范水电工程金属结构及启闭机安装工程单元质量等级评定，做到确保质量、安全适用、技术先进、经济合理，制定本标准。
1.0.2 本标准适用于水电工程钢闸门安装，拦污栅安装，启闭机安装及压力钢管制作、安装的工程单元质量等级评定。
1.0.3 工程单元质量评定应在检验项目的检验结果满足相应的验收规范要求后进行，并具有齐全、完整、准确的施工记录。
1.0.4 水电工程金属结构及启闭机安装工程单元质量等级评定，除应符合本标准外，尚应符合国家现行有关标准的规定。
2术语和符号
2.1 术 语
2.1.1单元工程unit works
依据设计结构、施工部署和质量考核要求，将水电工程金属结构及启闭机的安装划分为由一个或若干个工种施工完成的最小综合体，是施工质量考核的基本单位。
2.1.2 分部工程partitioned project
在一个构筑物内或在一个建筑物内能组合发挥一种功能的安装工程。
2.1.3单位工程unit projects
具有独立的施工条件或独立作用的，由若干个分部工程组成的工程。
2.1.4 主要项目 main items
对单元工程结构安全、使用功能及环境保护等有重大影响的检验项目，本标准评定表中采用△标记。
2.1.5一般项目 general items
除主要项目外的其他检验项目。
2.1.6 合格项目 qualified items
主要项目的实测点测量值100％符合合格标准，或一般项目的实测点测量值90％以上符合合格标准，且其余点测量值不大于合格标准允许偏差值的1.2倍。
2.1.7 优良项目 excellent items
在合格项目的基础上，实测点90％以上符合优良等级的项目。
2.2 符 号
P Sa——局部喷射清理的表面处理等级，用于工地现场施工情况时；
RZ——表面粗糙度符号，表示在取样长度内，5个最大轮廓峰高的平均值与5个最大轮廓谷深的平均值之和；
Sa——喷射或抛射除锈等级，用于工厂制作情况时；
δ——板厚或管壁厚度；
△——主要项目符号。
3项目划分及质量评定
3.1 项目划分
3.1.1 水电工程的质量等级评定项目宜划分为单元工程、分部工程和单位工程。
3.1.2金属结构及启闭机安装工程质量等级评定项目划分宜符合表3.1.2的规定。
表3.1.2 金属结构及启闭机安装工程质量等级评定项目划分
单位工程 分部工程 单元工程
溢洪道工程 闸门及启闭机安装 平面闸门埋件安装
平面闸门门叶安装
弧形闸门埋件安装
弧形闸门门叶安装
固定卷扬式启闭机安装
液压启闭机安装
螺杆式启闭机安装
移动式启闭机安装
泄洪洞(孔)工程 闸门及启闭机安装 平面闸门埋件安装
平面闸门门叶安装
弧形闸门埋件安装
弧形闸门门叶安装
固定卷扬式启闭机安装
液压启闭机安装
螺杆式启闭机安装
移动式启闭机安装

续表3.1.2
单位工程 分部工程 单元工程
溢流坝(孔)工程 闸门及启闭机安装 平面闸门埋件安装
平面闸门门叶安装
弧形闸门埋件安装
弧形闸门门叶安装
固定卷扬式启闭机安装
螺杆式启闭机安装
液压启闭机安装
移动式启闭机安装
坝体引水工程 闸门及启闭机安装压力钢管制作、安装拦污栅安装 平面闸门埋件安装
平面闸门门叶安装
液压启闭机安装
移动式启闭机安装
拦污栅埋件安装
拦污栅栅叶安装
钢管制作一个单节或一个管段；一个混凝土浇筑段钢管安装或一个部位钢管安装。例如下弯管、斜管、下水平管等
引水隧洞工程 闸门及启闭机安装压力钢管制作、安装拦污栅安装 平面闸门埋件安装
平面闸门门叶安装
液压启闭机安装
移动式启闭机安装
固定卷扬式启闭机安装
拦污栅埋件安装
拦污栅栅叶安装
钢管制作一个单节或一个管段；一个混凝土浇筑段钢管安装或一个部位钢管安装。例如下弯管、斜管、下水平管等
发电厂房工程 闸门及启闭机安装 平面闸门埋件安装
平面闸门门叶安装

续表3.1.2
单位工程 分部工程 单元工程
发电厂房工程 闸门及启闭机安装 固定卷扬式启闭机安装
液压启闭机安装
移动式启闭机安装
船闸工程 闸门及启闭机安装 平面闸门埋件安装
平面闸门门叶安装
弧形闸门埋件安装
弧形闸门门叶安装
人字闸门埋件安装
人字闸门门叶安装
固定卷扬式启闭机安装
液压启闭机安装
移动式启闭机安装
导流工程 闸门及启闭机安装 平面闸门埋件安装
平面闸门门叶安装
液压启闭机安装
固定卷扬式启闭机安装
取水工程 闸门及启闭机安装拦污栅安装 平面闸门埋件安装
平面闸门门叶安装
液压启闭机安装
固定卷扬式启闭机安装
移动式启闭机安装
拦污栅埋件安装
拦污栅栅叶安装

3.2质量评定
3.2.1 单元工程质量评定等级分为合格和优良两级。
3.2.2单元工程所有检测项目符合合格项目的规定，评定等级为合格。
3.2.3单元工程质量在合格等级的基础上，主要项目的优良率和一般项目的优良率达70％以上，评定等级为优良。
3.2.4单元工程质量等级评定应具备下列条件：
1单元工程所有施工项目已完成，并验收合格。
2有关质量缺陷已处理完毕或有监理单位批准的处理意见。
3.2.5单元工程质量等级评定应按下列程序进行：
1施工单位对已经完成的单元工程施工质量进行自检，合格后向监理单位申请验收。
2监理单位收到申请后，应进行抽检复检，并进行验收。重要隐蔽单元工程和关键部位单元工程施工质量应由建设、设计、监理、施工等单位的代表组成联合小组共同验收。
3 验收合格后进行单元工程质量等级评定。
3.2.6单元工程质量等级评定应包括下列资料：
1 施工图样、施工方案、施工记录及验收资料等程序文件。
2施工单位填写的单元工程质量检验记录表及单元工程质量等级评定表。
3监理工程师签署质量意见的抽检复核资料。
3.2.7 单元工程质量评定表的格式宜符合本标准附录A的规定。
4压力钢管制作
4.1质量评定条件
4.1.1钢管出厂前，应按现行国家标准《水电水利工程压力钢管制作安装及验收规范》GB 50766要求进行检查，填写出厂记录，并应按本标准第3.2节规定进行单元工程质量等级评定。
4.1.2钢管制作质量等级评定的单元划分应符合下列规定：
1 直管、弯管、渐变管以一节钢管或一个管段为一个单元。
2伸缩节以一个伸缩节为一个单元。
3岔管以一个岔管为一个单元。
4.2检查项目及评定标准
4.2.1 钢管周长及管节长度质量评定标准应符合表4.2.1的规定。
表4.2.1 钢管周长及管节长度质量评定标准(mm)
项次 项 目 质量标准 备注
合格 优良
△1 实际周长与设计周长之差 ±0.003D，且绝对值不大于24 ±0.0025D，且绝对值不大于20 安装环缝不带垫板
±0.103D，且绝对值不大于12 ±0.0025D，且绝对值不大于10 安装环缝带垫板V形坡口，垫板处周长
△2 相邻管节
周长差 δ<10 不大于6 不大于5 安装环缝不带垫板
不大于6 不大于5 安装环缝带垫板V形坡口，垫板处周长

续表4.2.1
项次 项 目 质量标准 备注
合格 优良
△2 相邻管节周长差 δ≥10 不大于10 不大于9 安装环缝不带垫板
不大于8 不大于7 安装环缝带垫板V形坡口，垫板处周长
3 单节钢管长度与设计长度之差 不大于5 不大于4 —

注：D—圆截面钢管内径(mm)。
4.2.2钢管管口平面度质量评定标准应符合表4.2.2的规定。
表4.2.2钢管管口平面度质量评定标准(mm)
项次 项 目 质量标准
合格 优良
1 钢管管口
平面度 D≤5000 不大于2 不大于2
D>5000 不大于3 不大于2

4.2.3 管节截面形状质量评定标准应符合表4.2.3的规定。
表4.2.3 管节截面形状质量评定标准(mm)
截面
形状 质量标准 备注
合格 优良
圆形 圆度不大于0.003D，且不大于30 圆度不大于0.003D，且不大于25 安装环缝不带垫板
钢管安装加劲环时，同端管口最大和最小直径之差不大于4 钢管安装加劲环时，同端管口最大和最小直径之差不大于3 安装环缝带垫板V形坡口，每端管口至少测量4对直径

续表4.2.3
截面
形状 质量标准 备注
合格 优良
椭圆形 椭圆长轴a和短轴b长度允许偏差为±0.003a或±0.003b，且绝对值不大于6 椭圆长轴a和短轴b长度允许偏差为±0.003a或±0.003b，且绝对值不大于5 —
矩形 长边A和短边B的长度允许偏差为±0.003A或±0.003B，且绝对值不大于6，对角线差不大于6 长边A和短边B的长度允许偏差为±0.003A或±0.003B，且绝对值不大于5，对角线差不大于5 —
正多边形 外接圆直径允许偏差为±6，最大直径和最小直径之差不大于0.003D，且不大于8 外接圆直径允许偏差为±6，最大直径和最小直径之差不大于0.003D，且不大于7 —
非圆形 钢管局部平面度每米范围内不大于4 钢管局部平面度每米范围内不大于3 —

4.2.4支承环、加劲环、止推环、阻水环安装质量评定标准应符合表4.2.4的规定。
表4.2.4支承环、加劲环、止推环、阻水环安装质量评定标准(mm)
项次 项 目 质量标准 简图
支承环 加劲环、止推环、阻水环
合格 优良 合格 优良
1 支承环或加劲环与管壁的垂直度a a≤0.01H，且不大于3 a≤0.02H，且不大于5
2 支承环或加劲环所组成的平面与管轴线的垂直度b b≤0.002D，且不大于6 b≤0.004D，且不大于12
3 相邻两环板的间距C允许偏差 ±10 ±30

以上各项均以每圆周测8点
注：简图中各项均以每圆周测8点。
4.2.5纵缝、环缝对口径向错边质量评定标准应符合表4.2.5的规定。
表4.2.5纵缝、环缝对口径向错边质量评定标准(mm)
项次 项 目 质量标准
合格 优良
△1 纵缝对口径向错边 0.1δ，且不大于2.0 0.1δ，且不大于1.5
2 环缝对口径
向错边 δ≤30 0.15δ，且不大于3.0 0.1δ，且不大于2.0
30<δ≤60 不大于0.1δ 不大于0.08δ
δ>60 不大于6.0 不大于5.0
△3 不锈钢复合钢板焊缝
对口错位 0.1δ且不大于1.5 0.1δ且不大于1.0

4.2.6纵缝焊后变形质量评定标准应符合表4.2.6的规定。
表4.2.6 纵缝焊后变形质量评定标准(mm)
项次 项 目 质量标准 样板长度 备注
合格 优良
△1 纵缝
焊后变形 D≤5000 不大于4 不大于3 样板弦长500 安装环缝不带垫板
不大于2 不大于2 安装环缝带垫板V形坡口
50008000 不大于6 不大于4 样板弦长1 200 安装环缝不带垫板
不大于2 不大于2 安装环缝带垫板V形坡口

4.2.7焊缝外观质量评定标准应符合表4.2.7的规定。
表4.2.7焊缝外观质量评定标准(mm)
项次 项目 质量标准
合格 优良
△1 裂纹 一类、二类、三类焊缝均不允许
2 表面夹渣 一类、二类焊缝均不允许，三类焊缝深度不大于0.1δ，长度不大于0.3δ，且不大于10
3 咬边 一类、二类焊缝深度不大于0.5；三类焊缝深度不大于1
4 表面气孔 一类、二类焊缝不允许；三类焊缝直径小于1.5的气孔每米范围类允许有5个，间距不小于20
△5 未焊满 一类、二类焊缝不允许，三类焊缝不大于(0.2+0.02δ)，且不大于1，每100焊缝内缺欠总长度不大于25
6 焊缝余高
Δh 手工焊 一类、二类焊缝：
δ≤25，Δh=0～2.5
25<δ≤50，Δh=0～3
δ>50，Δh=0～4
自动焊 一类、二类焊缝：0～4
三类焊缝不作要求
7 对接接头 手工焊 盖过每边坡口1～2.5，并平缓过渡
焊缝宽度 自动焊 盖过每边坡口2～7，并平缓过渡
△8 角焊缝焊脚K K≤12时，K ；K>12时，K

9 飞溅 一类、二类焊缝清除干净，三类焊缝不作要求
10 焊瘤 一类、二类焊缝不允许，三类焊缝不作要求

4.2.8一类、二类焊缝内部焊接质量评定标准应符合表4.2.8的规定。
表4.2.8一类、二类焊缝内部焊接质量评定标准
项次 项目 质量标准
合 格 优良
△1 射线检测
(RT) 应按现行国家标准《金属溶化焊焊接接头射线照相》GB/T 3323的有关规定执行，检测技术等级为B级，一类焊缝不低于Ⅱ级为合格，二类焊缝不低于Ⅲ级为合格 一次合格率
85％

续表4.2.8
项次 项目 质量标准
合格 优良
△2 脉冲反射法超声检测(UT)和相控阵超声检测
(PA—UT) 应按现行国家标准《焊缝无损检测超声波检测技术、检测等级和评定》GB/T 11345的有关规定执行，检测技术等级为B级，焊接接头质量等级应按现行国家标准《焊缝无损检测超声检测验收等级》GB/T 29712，一类焊缝应不低于Ⅱ级为合格，二类焊缝应不低于Ⅲ级为合格 一次合格率
95％
△3 衍射时差法超
声检测
(TOFD) 应按现行行业标准《水电水利工程金属结构及设备焊接接头衍射时差法超声检测》DL/T 330的有关规定执行。或应按现行行业标准《承压设备无损检测 第10部分：衍射时差法超声检测》NB/T 47013.10的有关规定执行，焊接接头质量等级，一类焊缝和二类焊缝均应不低于Ⅱ级为合格 一次合格率
85％
4 磁粉检测
(MT) 应按现行行业标准《承压设备无损检测 第4部分：磁粉检测》NB/T 47013.4有关规定执行，一类焊缝Ⅱ级为合格，二类焊缝Ⅲ级为合格 一次合格率
95％
5 渗透检测
(PT) 应按现行行业标准《承压设备无损检测 第5部分：渗透检测》NB/T 47013.5的有关规定执行，一类焊缝Ⅱ级为合格，二类焊缝Ⅲ级为合格 一次合格率
95％

4.2.9钢管内、外壁表面清除和局部凹坑焊补质量评定标准应符合表4.2.9的规定。
表4.2.9钢管内、外壁表面清除和局部凹坑焊补质量评定标准
项次 项目 质量标准
合格 优良
1 钢管内、外壁的表面清除 内、外壁上，需要拆除的临时支撑、夹具和焊疤清除干净打磨平整
2 钢管内、外壁局部凹坑焊补 内、外壁上，深度大于0.1δ或大于2mm的凹坑应焊补打磨平整 内、外壁上，深度大于0.1δ或大于1.5mm的凹坑应焊补并打磨平整

4.2.10 钢管防腐蚀质量评定标准应符合表4.2.10的规定。
表4.2.10钢管防腐蚀质量评定标准
项次 项目 质量标准
合格 优良
1 钢管内壁
表面处理 明管、埋管内壁表面清洁度应符合现行国家标准《涂覆涂料前钢材表面处理表面清洁度的目视评定 第1部分：未涂覆过的钢材表面和全面清除原有涂层后的钢材表面的锈蚀等级和处理等级》GB/T 8923.1中规定的Sa2.5级，常规涂层表面粗糙度为RZ40μm～RZ70μm，厚浆型重防腐涂料及金属热喷涂表面粗糙度数值应达到RZ60μm～RZ100μm
2 钢管外壁表面
处理 明管外壁喷涂涂料除锈等级为Sa2.5，表面粗糙度为RZ40μm～RZ70μm，埋管外壁涂刷改性水泥浆或苛性钠水泥浆除锈等级为Sa2
△3 金属喷涂外观
检查 外观检查，喷镀金属表面应均匀，无杂物、起皮、鼓泡、孔洞、凹凸不平、附着不牢固的金属粗颗粒、掉块、底材裸露的斑点及裂纹等现象
△4 金属喷涂厚度和结合性检查 所有测点厚度大于设计值的80％，结合性满足涂层与基体金属无剥离
△5 涂料涂装外观
检查 涂层表面应光滑，颜色均匀一致，无皱皮、起泡、流挂、针孔、裂纹、漏涂等缺欠。水泥浆涂层，厚度应基本一致，黏着牢固，不起粉状
△6 涂料涂装内部 质量检查 涂料厚度应满足85％的测点达到设计值，对于没有达到设计厚度测点，最小厚度不低于设计厚度的85％；
厚浆型涂料采用针孔仪检测，不允许有针孔；
附着力检测采用划格法或拉开法进行，应符合设计和现行国家标准《水电水利工程压力钢管制作安装及验收规范》GB 50766的规定

4.2.11 伸缩节制作质量评定标准应符合表4.2.11的规定。
4.2.12肋梁系岔管制作质量评定标准应符合表4.2.12的规定。
表4.2.11伸缩节制作质量评定标准(mm)
项次 项 目 质量标准
合格 优良
△1 内、外套管，止水压环实际周长和设计周长差 ±0.003D，且绝对值不大于8 ±0.0025D，且绝对值不大于7
△2 内、外套管，止水压环焊接后弧度与样板间隙 纵缝位置处小于2.0，其他部位小于1.0 纵缝位置处小于1.5，其他部位小于1.0
△3 内、外套管最大间隙、最小间隙与平均间隙之差 绝对值不大于平均间隙的10％ 绝对值不大于平均间隙的8％
4 焊缝外观检查 应符合表4.2.7的规定
△5 一类、二类焊缝内部焊接质量检查 应符合表4.2.8的规定
△6 内、外套管，止水压环的实测直径与设计直径偏差 ±0.001D，且绝对值不大于2.5 ±0.001D，且绝对值不大于2.0
△7 波纹管伸缩节气密性试验 满足设计要求；当水头小于25m时，可只做煤油渗透试验
8 内、外套管，止水压环管壁表面清除和局部凹坑焊补 符合表4.2.9的规定
9 内、外套管，止水压环内、外管壁防腐蚀表面处理 符合表4.2.10的规定
10 内、外套管，止水压环内、外管壁防腐蚀涂料涂装 符合表4.2.10的规定

表4.2.12 肋梁系岔管制作质量评定标准(mm)
简图
项次 项目 质量标准
合格 优良
1 管节长度L1、L2 ±10 ±8
2 主、支管管口圆度 0.003D，且不大于20 0.003D，且不大于18
△3 主支管口实测周长与设计周长差 ±0.003D，且允许偏差为±20，相邻管节周长差不大于10 ±0.003D，且允许偏差为±18，相邻管节周长差不大于8
4 支管中心距S1 ±10 ±8
5 纵缝对口错边量 0.1δ，且不大于2.0 0.1δ，且不大于1.5
6 环缝对口
错边量 δ≤30 0.15δ，且不大于3.0 0.1δ，且不大于2.0
30<δ≤60 0.1δ 0.08δ
δ>60 不大于6 不大于6
7 主、支管
中心高差(D为大
管内径) D≤2000 ±4 ±3
20005000 ±8 ±6
8 主、支管
管口垂直度 D≤5000 不大于2.0 不大于1.5
D>5000 不大于3.0 不大于2.5

续表4.2.12
项次 项目 质量标准
合格 优良
9 主、支管
管口平面度 D≤5000 不大于2.0 不大于1.5
D>5000 不大于3.0 不大于2.5
△10 焊缝外观检查 符合表4.2.7的规定
△11 一类、二类焊缝内部焊接质量检查 符合表4.2.8的规定
12 岔管内、外管壁表面清除和局部凹坑焊补 符合表4.2.9的规定
13 岔管管壁防腐蚀表面处理 符合表4.2.10的规定
14 岔管管壁防腐蚀金属喷涂 符合表4.2.10的规定
15 岔管管壁防腐蚀涂料涂装 符合表4.2.10的规定
△16 水压试验 无渗水及其他异常现象

5压力钢管安装
5.1质量评定条件
5.1.1压力钢管安装技术要求应符合设计图样和现行国家标准《水电水利工程压力钢管制作安装及验收规范》GB 50766的规定。
5.1.2压力钢管安装工程单元质量等级评定的单元划分应按本标准4.1.2条执行。
5.1.3压力钢管单元工程安装质量验收评定按本标准3.2节的规定进行，评定时应包括材料合格证，管节主要尺寸复测记录，安装质量检验项目检测记录，重大缺陷处理记录，焊接质量检验记录，表面防腐蚀记录，水压试验及安装程序文件等资料。
5.2埋管安装单元评定
5.2.1 埋管管口中心和里程质量评定标准应符合表5.2.1的规定。
表5.2.1 埋管管口中心和里程质量评定标准(mm)
项次 项目 质量标准
合格 优良
钢管内径D 钢管内径D
D≤2000 2000<
D≤5000 5000<
D≤8000 D>8000 D≤2000 2000<
D≤5000 5000<
D≤8000 D>8000
△1 始装节管口里程 ±5 ±5 ±5 ±5 ±4 ±4 ±4 ±4
△2 始装节管口中心 ±5 ±5 ±5 ±5 ±4 ±4 ±4 ±4

续表5.2.1
项次 项目 质量标准
合格 优良
钢管内径D 钢管内径D
D≤2000 2000<
D≤5000 5000<
D≤8000 D>8000 D≤2000 2000<
D≤5000 5000<
D≤8000 D>8000
△3 始装节两端管口垂直度 不大于3 不大于3 不大于3 不大于3 不大于2 不大于2 不大于2 不大于2
4 与蜗壳、伸缩节、蝴蝶阀、球阀、岔管连接的管节及弯管起点的管口中心 ±6 ±10 ±12 ±12 ±5 ±8 ±10 ±10
5 其他部位管节的管口中心位置 ±15 ±20 ±25 ±30 ±10 ±15 ±20 ±25
△6 弯管起点里程 ±10 ±10 ±10 ±10 ±8 ±8 ±8 ±8

5.2.2 管节横截面形状质量评定标准应符合表5.2.2的规定。
表5.2.2 管节截面形状质量评定标准(mm)
项次 截面形状 质量标准
合格 优良
1 圆形 圆度不大于0.005D，且不大于40，每端管口至少测量2对直径 圆度不大于0.004D，且不大于35，每端管口至少测量2对直径
2 椭圆形 椭圆长轴a和短轴b长度允许偏差为±0.005a或±0.005b，且绝对值不大于8 椭圆长轴a和短轴b长度允许偏差为±0.004a或±0.004b，且绝对值不大于6

续表5.2.2
项次 截面形状 质量标准
合格 优良
3 矩形 长边A和短边B的长度允许偏差为±0.005A或±0.005B，且绝对值不大于8，对角线差不大于6 长边A和短边B的长度允许偏差为±0.004A或±0.004B，且绝对值不大于6，对角线差不大于4
4 正多边形 外接圆直径允许偏差为±8，最大直径和最小宜径之差不大于0.003D，且不大于10 外接圆直径允许偏差为±6，最大直径和最小直径之差不大于0.0025D，且不大于8
5 非圆形 钢管局部平面度每米范围内不大于6 钢管局部平面度每米范围内不大于5

5.2.3纵缝、环缝对口错边量质量评定标准应符合表4.2.5的规定。
5.2.4焊缝外观质量评定标准应符合表4.2.7的规定，一类、二类焊缝内部焊接质量评定应符合表4.2.8的规定。
5.2.5埋管内、外壁的表面清除和局部凹坑焊补质量评定标准应符合表4.2.9的规定。
5.2.6埋管内、外壁安装焊缝及其两侧防腐蚀表面处理质量评定标准应符合表5.2.6的规定，其金属喷涂和涂料涂装质量评定应符合表4.2.10的规定。
表5.2.6 安装焊缝及其两侧防腐蚀表面处理质量评定标准
项次 项目 质量标准
合格 优良
△1 埋管防腐蚀表面处理 埋管外露面除锈等级满足《涂覆涂料前钢材表面处理表面清洁度的目视评定第2部分：已涂覆过的钢材表面局部清除原有涂层后的处理等级》GB/T 8923.2中规定的P Sa2.5级。常规涂料表面粗糙度达到RZ40μm～RZ70μm，对于厚浆型及金属热喷涂应达到RZ60μm～RZ100μm；
埋入混凝土部分表面清洁度除锈等级应符合P Sa2级

5.2.7 灌浆孔堵焊质量评定标准应符合表5.2.7的规定。
表5.2.7灌浆孔堵焊质量评定标准
项次 项目 质量标准 备注
合格 优良
1 灌浆孔堵焊 焊后满足设计要求，焊接接头外观按现行行业标准《承压设备无损检测 第4部分：磁粉检测》NB/T 47013,4和《承压设备无损检测 第5部分：渗透检测》NB/T 47013.5规定进行磁粉检测(MT)或渗透检测(PT)表面无损检测，合格等级为Ⅲ级；表面平整，无渗水现象 灌浆孔堵头采用渗透检测(PT)或磁粉检测(MT)抽查比例，碳素钢和低合金钢按不少于10％，高强钢按不少于25％比例抽查，发现裂纹应100％检查

5.3明管安装单元评定
5.3.1 明管口中心和里程质量评定应按表5.2.1的规定执行。
5.3.2明管圆度质量评定应符合表5.2.2的规定。
5.3.3纵缝、环缝对口错边量质量评定应符合表4.2.5的规定。
5.3.4焊缝外观质量评定应符合表4.2.7的规定。
5.3.5一类、二类焊缝内部焊接质量评定应符合表4.2.8的规定。
5.3.6表面清除和局部凹坑焊补质量评定应符合表4.2.9的规定
5.3.7 明管内、外壁安装焊缝及其两侧防腐蚀表面处理质量评定应符合表5.2.6的规定，其防腐蚀金属喷涂和涂料涂装质量评定应符合表4.2.10的规定。
5.3.8 明管支座中心、高程、弧度和间隙质量评定标准应符合表5.3.8的规定。
表5.3.8 明管支座中心、高程、弧度和间隙质量评定标准(mm)
项次 项 目 质量标准
合格 优良
1 鞍式支座顶面弧度与样板的允许间隙 不大于2 不大于2
△2 滚动支座或摇摆支座墩垫板高程和纵、横中心 ±5 ±4
3 与钢管设计轴线的平行度 不大于2/1000 不大于2/1000
4 滚动支座或摇摆支座各接触面的局部间隙 不大于0.5 不大于0.5
5 滚轮式、摇摆式和滑动式支座支墩垫板的纵向倾斜度和横向倾斜度 不大于2 不大于2
6 滚轮式、摇摆式和滑动式支座安装 能灵活动作，无任何卡阻现象

6平面闸门安装
6.1质量评定条件
6.1.1埋件宜以每一孔或每一段门槽的埋件安装划分一个单元工程，门叶宜以每扇门体的安装划分一个单元工程，闸门及门槽安装单元工程质量等级评定应按本标准3.2节规定进行。
6.1.2埋件及门叶的安装、焊接、表面防腐蚀及检查等技术要求应符合设计图样和现行行业标准《水电工程钢闸门制造安装及验收规范》NB/T 35045的有关规定。
6.1.3埋件及门叶单元工程安装质量验收评定时，应提交埋件及门叶的安装程序文件、安装记录、埋件及门叶的焊接与表面防腐蚀记录、闸门试验及试运行记录、重大缺陷处理记录等资料。
6.2埋件安装单元评定
6.2.1平面闸门埋件安装质量评定合格等级应符合表6.2.1—1的规定，优良等级应符合表6.2.1—2的规定。
6.2.2对于平面链轮闸门埋件安装质量，除了应符合表6.2.1—1和表6.2.1—2的规定外，还应符合表6.2.2的规定。
6.2.3埋件的焊缝外观质量评定应符合表4.2.7的规定。
6.2.4埋件安装焊缝及其两侧防腐蚀表面处理质量评定应符合表5.2.6的规定，其防腐蚀金属喷涂和涂料涂装质量评定应符合表4.2.10的规定。
6.3门叶安装单元评定
6.3.1 平面闸门安装包括平面滑动闸门和定轮闸门安装，质量评定应符合表6.3.1的规定。