Inspection of stainless steel globe valves: Doing a good job in valve inspection is a prerequisite for managing valve operation. A pipeline inspection team should be established, whose main tasks include not only inspecting leakage points and construction supervision, but also taking valve inspection as its main work content. The valve inspection work should be evaluated through the valve burial rate index.

The main contents of stainless steel globe valve inspection work include:

1. Checking the material of the valve is crucial.

2. Visual inspection of valve body and seals

3. The opening and error measurement of the electric valve should be witnessed, and whether the switch is sensitive.

4. Check if the pneumatic valve is leaking or stuck.

5. Check if there are any leaks in the valve body, packing, valve cover, etc., and check the tightness of the packing

6. The pressure sealing test must check whether the flange surface is leaking, and also consider the pressure difference between API598 and national standards.

7. Are the bolts loose, especially the high-temperature valve

8. Support position of valve

9.If it is an insulated valve, is the insulation of the valve complete

10. Is the installation direction correct

11. Regularly inspect the gate well of the stainless steel globe valve to ensure that it is not buried or occupied. Observing the terrain changes at the gate well, if the manhole cover needs to be raised or lowered in a timely manner, it should be ensured that the manhole cover is not buried or hinders traffic safety on the road. The debris piled up on the well site should be urged to be moved, damaged manhole covers and rings should be replaced in a timely manner, and collapsed gate wells should be rebuilt or repaired in a timely manner.

12. Conduct a thorough inspection of road construction. With the continuous acceleration of urban construction pace and the increasing number of new and renovation projects for urban infrastructure, it is of great significance to carry out valve inspection work on construction roads to prevent valve burial and synchronize valve maintenance and replacement work with road construction.

13. Situation of manhole covers: The loss or lack of matching manhole covers has led to accidents among passersby, which is not uncommon in various cities. To prevent such accidents, it is necessary to use the manhole cover as a key inspection point.

14. The valve is leaking, leaking, and leaking. Through inspection, it was found that some valves have obvious faults. Valves that leak can be easily detected during the inspection process.

A Specific inspection content and implementation unit

The specific inspection shall be organized by Party B's own professional personnel, and Party B shall provide venues, tools, vehicles, etc. for this purpose.

Specific inspections should include the following:

2.1 Check the sealing condition of pipelines and other components, joints, flanges, and valves for leaks;

2.2 Check whether the insulation layer and anti-corrosion layer of the pipeline are damaged, detached, or not in good condition due to cold running; Whether the anti-corrosion layer is intact;

2.3 Check whether the position of the pipeline meets relevant requirements;

2.4 Check the pipeline for abnormal vibration;

2.5 Check whether the pipelines collide and rub with each other, whether there is sinking or abnormal deformation of the pipelines;

2.6 Check whether the supports and hangers of the pipeline are detached, deformed, or damaged;

2.7 Check valves, flanges, and expansion joints;

2.8 Check whether the markings on the pipeline are intact and meet the requirements;

2.9 Check the safety protection device;

B online inspection