Roof Inspection and Repair

A flour mill in Turkey had chronic moisture problems in their silo. The roof had 12 penetration points for level sensors and vents, each with failed sealant. Water dripped directly onto the flour, causing mold contamination. We resealed all penetrations and added protective hoods—a $3,000 fix that saved $50,000 in contaminated product.

Roof inspection checklist: Check coating condition for rust or deterioration. Inspect all seams and joints for separation. Verify drain holes are clear. Check penetration seals for flexibility and adhesion. Look for ponding water indicating structural deflection.

Vent and Filter Maintenance

Vent maintenance: Inspect vent openings for blockage. Verify vent area meets design requirements (minimum 1 cm² per m³ of silo volume). Check vent flaps or covers operate freely. Clean any material buildup restricting airflow.

Filter maintenance: Clean or replace dust collector filters every 3-6 months. Monitor pressure drop across filters (replace at 1500 Pa). Check filter housing for leaks. Verify dust discharge system operates properly. Document filter changes and pressure readings.

Access Hatches and Seals

Hatch inspection: Check gasket condition and compression. Verify hinges operate smoothly. Test locking mechanisms for security. Inspect hatch frame for corrosion. Ensure safety interlocks function on interior hatches.

Seal maintenance: Replace gaskets showing compression set or cracking. Clean sealing surfaces before closing. Apply gasket lubricant for extended life. Test seal effectiveness with water spray. Document seal condition and replacement dates.

Safety Equipment

Fall protection: Inspect harness attachment points annually. Test anchor points per OSHA/EN requirements. Verify guardrails are secure and undamaged. Check ladder safety cages for corrosion. Replace any damaged components immediately.

Rescue equipment: Inspect rescue winches and tri-pods. Verify confined space entry equipment is functional. Check gas detectors are calibrated. Test communication equipment. Review emergency rescue procedures with all personnel.

Frequently Asked Questions

Q: How often should roof seals be replaced?

A: Quality silicone seals last 5-7 years. Inspect annually and replace when cracking or loss of adhesion appears.

Q: What causes vent blockage?

A: Material dust, bird nests, and ice buildup are common causes. Regular inspection and cleaning prevent blockage.