工艺管道安装方案中英文

工艺管道安装方案中英文内容摘要：

and equipment installation/handover Check and clearance of prefabricated pipe sections and fittings Installation piping supports and brackets Piping assembly tack welding Piping welding Piping weld check and NDT Joint inspection of piping installation Piping test, purging (cleaning), tightness removal of piping welding defects Normal piping installation procedure 8 positions in the construction drawings and code identification of the prefabricated piping. Internal checks and clearance should be made again of the pipe sections, fittings and valves with damaged sealing (plastic cap, plastic cloth or block board), and they can only be assembled, connected and welded after they are proved to be in conformity. 合格的法兰、阀门、垫片密封面安装时不得发生损坏，若发生影响密封损坏要立即更换、修复，方可安装连接。 Conforming sealing of conforming flanges, valves and washers should be damaged during installation. Damaged ones affecting the sealing should be replaced or repaired immediately before they can be installed and connected. 法兰连接应与管道同心，应保证螺栓自由穿入，法兰螺栓孔应跨中安装。 法兰平 行度偏差不大于法兰外径的 ‰ ，且不大于 2mm，不得用强紧螺栓的方法消除歪斜。 Flange connection should be eccentric with the piping, and ensure free insertion of the bolt. Flange bolt hole should be installed in the middle. Deviation of flange parallelism is not greater than ‰ of the outsi de diameter and not greater than 2mm. Do not eliminate obliqueness by tightening the bolt excessively. 螺栓紧固件安装，同一连接处同一规格螺栓，安装方向应一致。 螺母紧固后应与法兰紧贴，不得有楔缝，紧固后的螺母与螺栓端面宜齐平。 螺栓宜采用对称拧紧、顺序二 次拧紧或采用对称拧紧、间隔拧紧、顺序拧紧三次拧紧的方法进行紧固。 管道的螺栓和螺母安装时，其螺栓和螺母应涂以二硫化钼油脂、石墨机油或石墨粉。 Bolts of same specifications should be installed at the same connection amp。 should be installed in the same direction. Tightened nuts should be close against the flange, leaving no seam, and should better be flush with the end surface of the bolt. Bolts should be tightened symmetrically and then sequentially, or tightened three times: symmetrically, at intervals, and sequentially. Piping bolts and nuts should be coated with molebdenum disulphite grease, graphite oil or graphite powder before installation. 管道对接接口组对，按焊接要求对管口内外和坡口进行处理，管口组对用平板尺测量，在距管口中心 200mm 处测量平直度，如下图所示 : For piping butt pairing, the interior and exterior of the orifice and the groove shall be treated in accordance with welding requirement. Measure orifice pairing with a flat plate ruler, and measure the straightness at 200mm from the orifice center, as shown in the 9 figure below: 管道对接口平直度测量 Measurement of straightness of piping butt 管道对接平直度测量允许偏差 Allowable deviation for measured straightness of piping butt 管道规格 Piping specification 允许偏差 Allowable deviation 全长允许偏差 Allowable deviation over the entire length DN  100 mm 1 mm ≤ 10 mm DN ≥100 mm 2 mm ≤ 10 mm 管道的点固焊，应等同正式焊接，其焊接工艺、材料和控制应严格执行相应管道的焊接工艺要求 (详见管道焊接 )。 Piping tack welding should be treated in the same way as the final welding, and welding process, materials and control should be strictly in accordance with technological requirement for welding of corresponding piping (refer to piping welding for details). 螺纹连接的管道或管道上的部件，若设计无要求其螺纹接头密封材料均使用聚四氟乙烯带，拧紧螺纹时，不得将密封材 料挤入管内。 If not specified in the design, threaded joints of threadconnected piping or ponents on the pipes should use teflon band as sealing material. When tightening the threads, do not extrude the sealing material into the pipe. 管道连接时，不得强力组对，法 兰、阀门不得用加偏垫、多层垫等方法消除接口端面间隙、偏斜、错口或不同心等缺陷。 For piping connection, do not force any pairing, and do not use inclined washers or multilayer washers for flanges and valves to eliminate defects of joint end face such as clearance, deviation, displacement and eccentricity. 管道预拉伸或压缩应在预拉伸或压缩区域内的固定管架安装完毕，需热处理的焊缝处理合格；预拉伸或压缩区域内支、吊架安装完毕，支、吊架弹簧按设计值压a 200 钢板尺 steel plate ruler 10 缩并临时固定后进行，预拉伸或压缩的数值必须符合设计文件规定。 Piping pretension or pression should be made after the fixing brackets have been installed in the pretension or pression area, weld seams that need heat treatment have been treated accordingly, hangers/supports have been installed in the pretension or pression area, and hanger/support springs have been pressed according to the design value and fixed on an interim base. The pretension or pression values must conform to what is specified in the design document. 管道安装的允许偏差应符合下表规定 : Allowable deviation of piping installation should conform to the table below: 项目 Item 允许偏差 Allowable Deviation (mm) 坐标 Coordinates 架空及地沟 Overhead and ground ditches 室外 Outdoor 25 室内 Indoor 15 埋 地 Embedded in the ground 60 标高 Elevation 架 空及地沟 Overhead and ground ditches 室外 Outdoor 177。 20 室内 Indoor 177。 15 埋 地 Embedded in the ground 177。 25 水平管道平直度 Straightness of horizontal piping DN≤100 2L‰ ， 50 DN100 3L‰ ， 80 立管铅垂度 Plumbness of vertical piping 5L‰ ， 30 成排管道间距 Distance between pipes in a row 15 交叉管的外壁或绝热层间距 Distance between external walls or heat isolating layers of crossed piping 20 压缩机组及机泵管道安装 Installation of the piping for the pressor set and pump 机组、机泵管道安装前，应检查预制管段、管路附件、阀门、垫片及紧固件的规格、材质、等级及管段编号标识与设计图纸一致。 Before installation of the piping of the machine set and pump, check to make sure that the specifications, material and grades of the prefabricated pipe sections, 11 fittings, valves, gaskets and fasteners, as well as the code identification of the pipe sections correspond with those indicated in the drawings. 机组、机泵的管口应将封闭物拆除，清理、检查管密封面，核实机组、机泵管口法兰结构形式、等级同管道法兰相匹配，向上的管口应加镀锌铁皮盲板，防止管道安装时异物掉入机器内部。 Sealing materials should be removed from the tubing ends of the machine sets and pumps. Check the sealing surface of the piping to make sure that structure and grade of the flanges at the tubing ends of the machine sets and pumps match with the piping flanges. Galvanized iron blinds should be fitted onto upward orifice to prevent foreign objects fro。