How to perform daily and regular maintenance on LPG loading arms to ensure safe operation?
Daily and regular maintenance of LPG loading arms is crucial to prevent leakage and extend service life, which can be divided into daily inspection, monthly maintenance, and annual overhaul. Daily inspection: after each use, clean the arm body and coupler with a clean cloth to remove oil stains and dust; check the sealing rings for wear, cracks, or aging, and replace them immediately if any defects are found; test the flexibility of the swivel joint and apply special lubricating oil (compatible with LPG) if necessary; check the integrity of the electrostatic grounding wire. Monthly maintenance: comprehensively inspect the valve system, including the opening and closing sensitivity of emergency shut-off valves and control valves, and test the pressure relief function of the pressure relief valve; check the connection bolts of the support frame for looseness and tighten them; calibrate the pressure and temperature sensors to ensure accurate data. Annual overhaul: invite professional technicians to disassemble the entire loading arm, inspect the internal components (such as swivel joint bearings, valve cores) for wear and corrosion; replace worn parts with original accessories; conduct a pressure test (pressure 1.5 times the working pressure) and a tightness test to ensure the arm meets the safety standards; check the explosion-proof performance of electrical components (if any) and replace them if they fail to meet the requirements. Keep detailed maintenance records, including maintenance time, content, replaced parts, and test data.
