Key points for maintenance and upkeep after installation of pipelines in Dalian

Key points for maintenance and upkeep after installation of pipelines in Dalian

The Dalian pipeline system plays an important role in various buildings and industrial facilities, responsible for transporting various media such as water, gas, oil, etc. The maintenance and upkeep work after pipeline installation directly affects the service life, operational efficiency, and safety of the pipeline system. The following are the key points for maintenance and upkeep after the installation of pipelines in Dalian.

1、 Regular inspection

Appearance inspection

Regularly inspect the appearance of pipelines to see if there are signs of rust, wear, deformation, cracks, or leakage on the surface of the pipelines. Pay special attention to the connections, bends, tees, and other parts of the pipeline, as these areas are more prone to problems. If rust is found on the surface, timely rust removal treatment should be carried out and anti-corrosion paint should be applied to prevent further deterioration of rust.

Check if the supports and hangers of the pipeline are secure, free from looseness, deformation, or damage. If there are problems with the support and hanger, it may cause uneven stress on the pipeline, leading to deformation or even rupture of the pipeline. Therefore, once a problem is discovered, it should be repaired or replaced in a timely manner.

Internal inspection

For some pipelines that transport liquids, regular internal inspections can be conducted. Equipment such as a pipeline endoscope can be used to check for scaling, corrosion, blockage, or foreign objects inside the pipeline. Scaling and corrosion can affect the flow area and strength of pipelines, blockage can affect the efficiency of medium transportation, and foreign objects may damage equipment inside pipelines. If internal problems are found, corresponding cleaning, repair or dredging measures should be taken according to the specific situation.

2、 Cleaning and maintenance

External cleaning

Regularly clean the dust, dirt, and debris outside the pipeline to maintain the cleanliness of the pipeline surface. You can use a damp cloth or soft bristled brush for wiping, and for difficult to remove stains, you can use an appropriate amount of cleaning agent for cleaning. But attention should be paid to the selection of cleaning agents, and corrosive cleaning agents for pipelines should be avoided.

When cleaning pipelines, attention should also be paid to protecting the surrounding environment to avoid pollution caused by cleaning agents and sewage.

Internal cleaning

Choose the appropriate cleaning method to clean the inside of the pipeline according to the different media transported by the pipeline. For example, for pipelines transporting water, regular physical flushing or chemical cleaning can be used to remove scale and impurities inside the pipeline. Physical flushing can be carried out using high-pressure water guns, while chemical cleaning can use specialized pipeline cleaning agents, but attention should be paid to the concentration and usage of the cleaning agents to avoid damage to the pipelines.

For pipelines transporting oil or gas, regular internal cleaning should also be carried out to prevent impurities from accumulating and affecting the quality and safety of medium transportation.

3、 Anti corrosion treatment

Coating protection

After the installation of the Dalian pipeline, the surface of the pipeline should be promptly treated with anti-corrosion coating. Anti corrosion coatings can effectively isolate pipelines from contact with the external environment, preventing them from being corroded. When selecting anti-corrosion coatings, the selection should be based on factors such as the pipeline's usage environment and the medium being transported, to ensure that the coating has good adhesion, corrosion resistance, and wear resistance.

Regularly inspect the condition of the anti-corrosion coating. If any damage, peeling, or aging of the coating is found, it should be repaired or repainted in a timely manner.

cathodic protection 

For some buried or underwater metal pipelines, cathodic protection can be used to prevent corrosion. Cathodic protection is the process of applying a cathodic current to a pipeline to make it a cathode, thereby inhibiting corrosion of the pipeline. The cathodic protection system needs to be regularly inspected and maintained to ensure its normal operation.

4、 Leak detection and repair

Regular testing

Regular leak testing of pipeline systems can be conducted using pressure testing, airtightness testing, or other suitable testing methods. Pressure testing is to apply a certain pressure to the pipeline and observe whether the pressure is stable to determine whether there is a leak in the pipeline. The airtightness test is to determine the sealing of the pipeline by detecting the amount of gas leakage inside the pipeline.

For some important pipeline systems, it is recommended to install leak monitoring equipment such as leak sensors to promptly detect leaks and issue alerts.

Timely repair

Once a leak is found in the pipeline, immediate measures should be taken to repair it. Firstly, it is necessary to determine the location and cause of the leak, and then choose the appropriate repair method based on the specific situation. For smaller leaks, welding, sealant and other methods can be used for repair; For larger leaks or severe pipeline damage, it may be necessary to replace the pipeline or fittings.

When repairing leaks, attention should be paid to safety to avoid accidents such as fires, explosions, or poisoning caused by the leaked medium. At the same time, it is necessary to ensure that the quality of the repaired pipeline meets the requirements and can operate normally.

5、 Operation management

Control the flow rate of the medium

During pipeline operation, the flow rate of the medium should be reasonably controlled. Excessive flow rate can increase pipeline wear and pressure loss, as well as cause vibration and impact, thereby affecting the service life of the pipeline. Therefore, the flow rate of the medium should be adjusted reasonably according to the design requirements and actual operating conditions of the pipeline.

Avoid overloading operation

The operating pressure and temperature of the pipeline should be strictly controlled within the design range to avoid overload operation. Overloading operation will increase the stress on the pipeline, leading to accidents such as pipeline deformation, rupture, or leakage. Therefore, it is necessary to install corresponding pressure and temperature monitoring equipment to monitor the operating parameters of the pipeline in real time. Once abnormalities are found, measures should be taken in a timely manner for adjustment.

Regular maintenance of equipment

Valves, pumps, and other equipment in pipeline systems also require regular maintenance and upkeep. Regularly check the sealing and flexibility of the valve to ensure that it can be opened and closed normally; Regularly maintain the pump, including cleaning, lubrication, replacement of vulnerable parts, etc., to ensure good operational performance of the pump.

In short, the maintenance and upkeep of the Dalian pipeline installation is a long-term and important task that requires us to take it seriously. Only by doing a good job in maintenance and upkeep can we ensure the safe and stable operation of pipeline systems, extend the service life of pipelines, and provide reliable guarantees for production and life.