Free grain silo inspection checklist

What is a grain silo inspection checklist?

A grain silo inspection checklist is a structured audit document used by farm owners, grain bulk handlers, agribusiness managers and rural infrastructure inspectors to verify the structural integrity, safety controls and operational readiness of a grain storage silo or bin. Grain silos carry a distinct hazard profile that separates them from other storage tanks and structures. The four primary risks are engulfment in flowing grain (which kills more than 70 percent of those drawn into a silo within minutes), dust explosion (grain dust is a Class II combustible dust with explosive concentrations as low as 50 grams per cubic metre), structural fatigue from cyclic pressure loading as the silo is filled and emptied and aeration or fumigation related hazards. The checklist covers the silo shell condition, hopper or cone, roof and vents, ladders and fall protection, aeration fans and ducts, fumigation system and signage, sweep auger or unloading equipment, electrical classification and confined space controls.\n\nUnlike a storage tank inspection (which focuses on liquid containment, API 653 shell thickness, bunding and overfill prevention), a grain silo inspection covers very different failure modes. Grain shifts unpredictably as it flows, creating bridging cavities that collapse under the operator and engulf in seconds. Vertical and lateral grain pressure on the silo wall cycles every fill and unload, fatiguing welded seams and bolted joints over years. Grain dust accumulates on every horizontal surface and inside the head and boot of every elevator, building toward a primary explosion that can trigger a far larger secondary explosion through suspended dust clouds. The Australian standard AS 1747 (Silos for storage of bulk materials Safety) sets the safety requirements for silo design, signage and operation. AS 1170 series sets the structural loading standards. OSHA 1910.272 (Grain handling facilities) is the US Federal regulation that requires written housekeeping, hot work permits, lockout tagout, entry permits and emergency action plans specifically for grain handling. A documented inspection satisfies WHS Act 2011 plant duty obligations under Section 19, supports insurance and bank security audit obligations on farm and depot assets, and prevents the single category of agricultural workplace incident with the highest fatality rate per exposure hour.

Learn more about compliance and inspections in MapTrack.

Benefits of digitising forms in MapTrack

When you digitise grain silo checklists in MapTrack, you get:

• Field users can easily scan a QR code to complete a form on mobile. Unlimited users.
• Automatically get alerts when faults are identified.
• Link every form digitally as a PDF to the relevant asset, location or person.
• Receive a digital PDF copy with every submission to your email.
• Ability to share forms digitally.
• Build conditional logic (show or hide questions based on answers).
• Take pictures or attach photos. Not possible with a paper-based form.
• Electronic signatures.
• Edit forms later without reprinting.
• Restrict permissions (who can view, complete or approve).
• Build forms with AI (describe what you need and MapTrack suggests the form).
• Escalate critical hazards instantly to safety managers via push notification.
• Maintain an auditable safety register that satisfies WHS regulator requests.
• Correlate incident trends across sites with built-in safety analytics.

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What to include in a grain silo inspection checklist

This grain silo inspection checklist covers 10 key areas:

• Silo identification: silo number capacity (tonnes) commodity stored construction type (galvanised steel concrete or fabric) construction date last full inspection date and the operator or asset owner.
• Shell condition: visual inspection for corrosion pitting weld defects bolted seam condition staining (indicating moisture ingress) and any wall deformation or out-of-round.
• Hopper or cone and base: hopper plate condition outlet gate operation cone seam condition base ring and anchor bolt torque plus foundation pad cracking and settlement.
• Roof and ventilation: roof plate condition peak cap inspection hatch latch screened roof vents pressure and vacuum relief and any signs of moisture ingress around the eave.
• Ladders fall protection and access: ladder cage condition rest platforms anchor points for harness use and access hatches plus signage at the base of each ladder against AS 1657 fixed platforms.
• Aeration system: fan and motor condition belt and intake screen condition duct integrity inlet and outlet temperature differential and any blocked aeration floor.
• Sweep auger and unloading: sweep auger lockout point isolation procedure auger flighting condition guards in place and out-of-service tag system.
• Fumigation and dust: phosphine fumigation signage current empty container disposal vent purge schedule plus dust accumulation on every horizontal ledge and inside elevator head and boot.
• Electrical classification: hazardous area classification per AS/NZS 60079.10.2 dust explosion zone signage motor enclosure rating and earth continuity on conductive equipment.
• Confined space and entry controls: entry permit register harness lifeline and tripod equipment current gas test kit current and rescue plan and signage at every entry point.

How often should you complete this checklist?

Inspection cadence is tiered. A short visual walk-around (signage lockout point dust around the base ladder access integrity) should occur weekly during the active receival or storage period. A full structural and safety inspection should be completed every six months as a minimum for high-throughput silos at bulk handler depots and at least annually for on-farm storage. AS 1747 expects design integrity and operational safety to be maintained through documented inspections, and AS 1170 series structural loading expects fatigue cycles to be reviewed against design assumptions. OSHA 1910.272 expects written housekeeping and inspection programs for grain handling facilities. An out-of-cycle inspection is triggered by any structural anomaly (visible deformation, anchor bolt failure, weld crack), engulfment near-miss or fatality, fumigation incident, fire or dust explosion event, severe weather impact (hail, cyclone, wind) and any change of commodity that alters loading or moisture characteristics. MapTrack scheduling can run the weekly walk monthly housekeeping audit six monthly structural inspection and annual fumigation regime review as recurring tasks against every silo.

Applicable regulatory standards

This template aligns with the following regulations and standards:

• WHS Act 2011 (Section 19)
• AS 1747-2003 (Silos for storage of bulk materials Safety)
• AS 1170 series (Structural design actions)
• AS 1657-2018 (Fixed platforms walkways stairways and ladders)
• AS/NZS 60079.10.2:2020 (Hazardous area classification combustible dust)
• OSHA 1910.272 (Grain handling facilities)

Related resources

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