Prepare a preventive maintenance checklist to facilitate data recording and referencing that clearly establishes which components are to be evaluated and which inspection criteria to use.
● If you have a metal silo, look for bolted joints near the hopper’s top, waviness along the sheet edges, bolt hole elongation, cracks between bolt holes, outward bulging of the cone shell near the top and damage at vertical seams.
● Determine minimum wall thicknesses required for structural integrity and compare these to your silo’s actual wall thickness.
● Look for and repair or replace damaged or loose liners.
● Remove material buildup that could trap moisture on the outdoor silos’ exterior.
● Check for warning signs, air blowing in or out of vents, wear patterns, vibration or spillage.
● Inspect and maintain mechanical equipment including gates, feeders and dischargers. (When repairing or replacing any mechanical component, remember that seemingly innocuous changes can have significant effects)
If you spot anything wrong during your routine maintenance checks, stop discharging and filling the silo so you can assess the structure’s integrity, and summon expert help.
In addition, annually inspect all alloy, aluminum, stainless steel, and plated components, checking for corrosion, intergranular cracking, pitting, and deterioration. Verify that all bolted connections are properly torqued, retighten loose connections, and re-examine them within 3 months. Annually inspect the interior and exterior finish for damage, wear, or corrosion, and touch them up or repair them as needed.
Every 6 months, inspect the guardrails for looseness or damage, the wear liners for erosion, the ladders for looseness, and the manholes for proper alignment and fit. Check gaskets for unusual wear, and lubricate hinges as needed. Once every 3 months, inspect all relief valves and vents to make sure they’re clear, free, and operational. It’s also important to verify that safety signs are applied to manholes and all attached equipment, and that all personnel have read and understood them. You should always perform a post-disaster examination of the silo and all components and make sure that problems are immediately corrected.
When it comes to keeping your silo clean and running efficiently day in and day out, it's vital that you are proactive with preventive silo maintenance.
Post time: Mar-03-2022