1. Purpose
API 5L X52 seamless pipeline plays a critical role in the transportation system of many industries such as oil and natural gas. To ensure its safety and reliability during operation, hydraulic pressure testing is an essential quality inspection link.
2. Test preparation
Equipment assembly: prepare pressure gauges with appropriate ranges and accuracy, water tanks with sufficient capacity, suitable connectors and nuts, etc.
Water requirements: Use clean tap water or distilled water to prevent impurities from affecting the results and damaging the pipeline.
Pipeline cleaning: Remove dirt and debris in the pipe to ensure that there is no foreign matter interfering with the test accuracy.
3. Test steps
Water injection pressure measurement: Slowly inject water and exhaust, then close the valve and record the initial pressure.
Pressure increase monitoring: Slowly increase the pressure in the water tank, closely monitor the pressure changes, and prevent the pressure from increasing too quickly.
Pressure stabilization record: Pause when a certain pressure ratio is reached, continue to increase after stabilization, close the valve and stabilize the pressure after reaching the test pressure, and then record.
Drainage end: After the test is qualified, be careful to disconnect the drainage to prevent negative pressure from damaging the pipe.
4. Result evaluation
Leakage inspection: carefully check the pipe body, welds and joints, mark and analyze if there is leakage, repair or replace and retest.
Pressure verification: compare the recorded pressure with the standard range, if it does not meet the standard, the strength of the pipeline is questionable.
Qualified judgment: the pipeline can be put into use only if there is no leakage and the pressure is compliant.
5. Safety measures
Pressure stabilization: use high-precision equipment and systems to stabilize the pressure to prevent sudden changes and cause pipe rupture.
Water tank level: control the liquid level, set alarms, and prevent accidents and damage caused by overload.
Site safety: clear obstacles to ensure smooth flow, avoid dangerous areas for testing, set warning signs and provide protective equipment.
Grade X52 PSL2 Carbon Steel Seamless Pipe
