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PVDF管件管道系统需要定期的清洗

DF管道系统在使用过程中应定期进行清洗并检查腐蚀、磨损、变形情况,必要时可进行对双头螺栓、锻制阀体进行磁粉、着色或超声波探伤。

The DF piping system should be cleaned periodically and checked for corrosion, wear and deformation. If necessary, the double headed bolts and forged valves shall be subjected to magnetic powder, coloring or ultrasonic testing.

对下列情况之一者,必要时应切取一段(力求包括焊缝)进行破坏性检验,检验内容包括化学成分,机械性能,冲击韧性(壁厚≥12㎜),并根据检查结果确定能否继续使用:

On one of the following circumstances, when necessary, take a cut (to include weld) destructive test, test content including chemical composition, mechanical properties, impact toughness (wall thickness greater than 12 mm), and can continue to use is determined according to the inspection results:

a、对于使用过程中出现超温超压过冷可能影响金属材料和结构强度者;

A may affect the strength of metallic materials and structures in the case of over temperature, over pressure and over cooling during use;

b、以蠕变率控制使用寿命,使用期限接近使用寿命者;

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B, control the service life with creep rate, the service life is close to the service life;

c、有可能引起高温氢腐蚀的管道。外部检测的结果应详细的记录在管道档案中。

C a pipe that is likely to cause high temperature hydrogen corrosion. The results of external tests shall be recorded in the piping file in detail.

管道和焊缝表面应进行磁粉或着色探伤。无法拆装的较长管道,可只对有怀疑的部位进行探伤。

Magnetic or penetrant inspection shall be applied to the pipe and weld surface. A longer pipe that cannot be assembled can be tested only on suspected parts.

对管道焊缝进行20%的超声波或射线探伤抽查。对于与容器以焊接形式相连的管段,进行40%的超声波或射线探伤抽查。抽查中发现有超标缺陷,则应扩大检查,如继续发现有超标缺陷者,应对全部剩余焊缝进行检查。

Conduct 20% ultrasonic or radiographic inspection of pipe welds. For pipe sections connected with the containers in welded form, 40% ultrasonic or radiographic inspection shall be carried out. Random inspection found excessive defects, it should be expanded inspection, such as the continuous detection of excessive defects, should be all remaining weld inspection.

检查管道内外表面的冲蚀情况,对直管、弯管、三通等内表面可用灯光或窥视镜配合检查。

Check the erosion of the inner and outer surfaces of the pipe, check the inner surface of the straight pipe, the bent pipe, the three pass and so on.

对管端丝扣、密封面和法兰密封面进行宏观检查。对有腐蚀和振动严重的管道,其管端丝扣部位应进行着色或磁粉探伤检查。

The tube end screw, sealing surface and sealing surface of flange for macroscopic examination. The pipeline corrosion and serious vibration, the pipe end thread parts should be colored or magnetic particle examination.

本文来自:CPVC管材管件阀门批发更多精彩内容请点击我们的官方网站: http://www.sdcpvc.com我们将倾情为您解答。

This article comes from: CPVC pipes, fittings, valves wholesale more exciting content, please click on our official website: http://www.sdcpvc.com, we will be happy to answer for you.


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