– Annual visual inspection: look for corrosion, pitting, deformation.
– Check bolt torque and flange flatness.
– Check the telltale space (disc+valve) if applicable.
– Gentle cleaning with non-abrasive cloths; never sand or polish.
– Preventive replacement per the recommended cycle (3–5 years) or more frequently with aggressive media. Document the lot number and date for traceability.
Complete guide: Maintenance and replacement interval of rupture discs