2. Construction Program Workshop tools Prepare workshop Material receiving preparation drawing inspection Plate cutting and groove Clamping fixture and preparation template fab. Wall plate rolling Accessory Fab. Foundation acceptance Bottom plate setting, welding,NDE Tank top fabrication and NDE Tank wall plate installation, welding, NDE Wall plate nozzle opening Tank top installation Nozzle and accessory installation Dimension Check Vacuum test Water filling test and foundation setting check Tank inside cleaning, drying and turnover RFQ: IN-P-2011-0155 \\ Project Title：Storage Tanks for Jilin Hydrogen Peroxide Project
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2. Construction Program 3.4工作程序详细描述 Detailed description of work procedure
3.4.1 材料及外购件的检查验收 Inspection and acceptance of materials and purchased parts.
a) 制作储罐选用的材料和附件，应具有质量合格证明书。当对质量合格证明书有疑问时，
应对材料和附件进行复验，合格后方准使用。Materials and accessories used for the fabrication of storage tank shall be supplied together with relevant quality certificates. In case of suspecting of quality certificates, the materials and accessories have to be re-inspected until being qualified.
b) 焊接材料（焊条、焊丝、及焊剂）应具有质量合格证明书。Welding materials (electrodes,
welding wire and soldering flux) shall be supplied with quality certificates.
c) 制作储罐选用的钢板，必须逐张进行外观检查，其表面质量应符合现行的相应钢板标
准的规定。Steel plates used for storage tank have to be visually inspected one by one and its appearance quality must conform to the stipulation of corresponding current steel plate standards.
d) 钢板表面锈蚀减薄量、划痕深度与钢板实际负偏差之和，应符合下列钢材厚度的允许
偏差的规定。The sum of surface rust corrosion, scratching depth and actual negative deviation shall comply with the stipulation of steel plate thickness allowable deviation.
钢板厚度的允许偏差表Steel plate thickness allowable deviation form
钢板厚度（mm）Steel plate thickness 6~7 8~25
3.4.2 基础的复验处理 Foundation resurvey and treatment
基础的复验应根据相关标准和规范要求进行，检查基础的表面质量、平整度、坡度、形状尺寸情况、标高、地脚螺栓（或预留孔）的质量偏差情况，按照厂房轴线检查基础位移偏差，确定基础的中心轴线，中心点作为储罐制作过程中的基准检测点与线； Foundation resurvey shall comply with relevant code and specification to inspect deviation of the surface qualify, flatness, slope, external dimensions, elevation, anchorage (or pre-set openings) of the foundation. The foundation displacement error is checked as per building axis, determining the central axis of foundation. The central point is the reference point and
RFQ: IN-P-2011-0155 7 of 41 Project Title：Storage Tanks for Jilin Hydrogen Peroxide Project
允许偏差（mm）Allowable deviation -0.6 -0.8 2. Construction Program line used for storage tank fabrication.
基础砂层表面应平整密实，无突出的隆起、凹陷及贯穿裂纹。
The sand bedding of foundation shall be leveled and compacted, no heaving, concave and cracks.
如果基础需要进行修整或进行防渗漏等处理的必须按要求进行，处理完毕后才能进行下一道工序。
If the foundation is required for trimming or penetration/leakage, it must be handled as required until next step of work begins.
3.4.3 储罐预制 Storage tank fabrication
a) 储罐在预制、组装及检验过程中所使用的样板，在构件的曲率半径小于或等于12.5
米时，弧形样板的弦长不得小于1.5米。For the template used for the fabrication, assembling and inspection, if the curvature radius of assembled part is less than or equal to 12.5m, the chord length of the arc template shall not be less than 1.5m.
b) 测量焊缝角变形的弧形样板，其弦长不得小于1米。 For the arc template for measuring
weld angular deformation, its chord length must be over or equal to 1m.
c) 直线样板的长度不得小于1米。The length of straight template must be equal or bigger
than 1m.
d) 底板预制 Base plate prefabrication
? 底板预制前应绘制排版图，底板的排版直径,宜按设计直径放大0.1%-0.15%。
Before fabrication of base plate, the plate arrangement drawing shall be drawn up. The diameter of base plate for arrangement must be enlarged by 0.1%-0.15% of the designed diameter.
? 边缘板沿罐底半径方向的最小尺寸，不得小于700mm。The minimum dimension of
edge plate along with tank bottom radial direction shall be bigger or equal to 700mm. ? 中幅板的宽度不得小于1000mm，长度不得小于2000mm。The width of middle
plates shall be bigger or equal to 1000mm, and its length is not less than 2000mm. ? 底板任意相邻焊缝之间的距离，不得小于300mm。The distance between two
adjacent welds of base plates shall be bigger or equal to 300mm.
RFQ: IN-P-2011-0155 8 of 41 Project Title：Storage Tanks for Jilin Hydrogen Peroxide Project
2. Construction Program e) 壁板预制 Tank wall plate prefabrication.
? 壁板预制前应绘制排版图，各圈壁板的纵向焊缝宜向同一方向逐圈错开，其间距
宜为板长的1/3，且不得小于300mm。 Before wall plate prefabrication, plate arrangement drawings shall be prepared. The longitudinal welds of every circumferential of wall plates shall be staggered at each circle in the same direction. The spacing shall be 1/3 of the plate length and not less than 300mm.
? 底圈壁板的纵向焊缝与罐底边缘板对接焊缝之间的距离，不得小于300mm。The
distance between the longitudinal welds of the lowest circle of wall plates and butt welds of tank edge plates is not less than 300mm.
? 开孔和罐壁之间的距离 Distance between openings and tank wall：
(1) 罐壁厚度大于12㎜，开孔接管或补强板外缘与罐壁纵环焊缝之间的距离，
应大于焊脚尺寸的8倍，且不应小于250㎜。
In case that tank wall thickness is more than 12mm, the distance between nozzle or outside edge of reinforcing plate and longitudinal & circumferrencial welds of tank walls shall be more than 8 times of fillet weld size, and shall not be less than 250mm.
(2) 罐壁厚度不大于12㎜，开孔接管或补强板外缘与罐壁纵焊缝之间的距离不
应小于150㎜；与罐壁环焊缝之间的距离，不应小于壁板厚度的2.5倍，且不应小于75㎜.
In case that tank wall thickness is not more than 12mm or the welding between nozzle or the outside edge of reinforcing plate tank wall and the longitudinal welds of tank walls shall not be less than 150mm, the distance from the circummferrencial of tank wall shall not be less than 2.5 times of tank wall thickness and shall not be less than 75mm.
? 包边角钢对接接头与壁板纵向焊缝之间的距离，不得小于200mm。The distance
between top angle butt joints and longitudinal welds of wall plates shall not be less than 200mm.
? 直径小于25米的储罐，其壁板宽度不得小于500mm，长度不得小于1000mm。
For the oil tank of diameter less than 12.5m, its wall width is not less than 500mm, its length not less than 1000mm.
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2. Construction Program ? 壁板尺寸允许偏差表：Table of allowable deviation of wall plate dimensions
环缝对接（mm） Circumferential joint butting 板长AB(CD)≥10m Length of plate AB(CD)≥10m ±1.5 ±2 ≤3 ≤1 ≤2 板长AB(CD)＜10m Length of plate AB(CD) ＜10m ±1 ±1.5 ≤2 ≤1 ≤2 测量部位 Measuring locations 宽度AC、BD、EF Width AC、BD、EF 长度AB、CD Length AB、CD 对角线之差︱AD-BC︱ Difference of diagonals 直线度 Straight line degree AC、BD AB、CD
f) 顶板预制 Roof plate prefabrication
? 因本项目的罐顶形式为拱顶，需要在机械厂加工，为考虑可加工尺寸和运输，直
径在8米以上的储罐罐顶分3～4部分加工，直径在8米以下的储罐罐顶分2～3部分加工，加工完毕后在现场组对成形，在壁板安装后一次性吊装。The arch top will be adopted for the tank of this project, which needs fabrication in professional machining shop, however considering the machining size and transport limit, for the tank that diameter is more than 8m, the tank top will be fabricated in 3~4 pieces, for the tanks that diameter is less than 8m, the tank top will be fabricated in 2~3 pieces.
RFQ: IN-P-2011-0155 10 of 41 Project Title：Storage Tanks for Jilin Hydrogen Peroxide Project