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The Stockpile · Pile 01 — The Services

Silo cleaning

Capacity restored from the top of the vessel — workers stay out of it.

3 min readUpdated Aug 2026

What this service covers

Whip cleaning of silos, bins and bunkers — buildup removed, ratholes and bridges broken, live capacity restored — with the crew standing on top of the vessel, not inside it. Scheduled maintenance cleanings, emergency un-plugging, and flow-aid recommendations to keep the vessel clean afterward.

Always included in an ACT silo quote

  • Comprehensive evaluation of silo conditions during the proposal process
  • Factory trained technicians and explosion-proof lighting
  • OSHA 30 and MSHA Part 46/48 trained crews
  • Strategic cleaning to maximize flow and production

On the rare occasion confined-space entry is genuinely required, it is identified during the proposal and executed under a full permit program — never improvised on site.

“The ACT Group helped us clear a silo that had been plugged for 18 years, all without confined space entry.”
— IGM

Signs it is time

Live capacity shrinking month over month. A silo that reads full but runs empty. Discharge that stops and surges. Old, off-spec product appearing in fresh loads. Any of these means buildup is established — and hardening.

Vessels and materials we clean

VesselTypical troubleMethod
Concrete & steel silosWall buildup, ratholes, bridgesWhip cleaning from the top — crew never enters
Bins & bunkersCompacted heels, dead capacityWhip and specialty tooling, sequenced from above
Hoppers & chutesBuildup at the converging sectionsMechanical cleaning at the choke points
Cement, fly ash, lime, aggregate, coal, wood, grain productsEach packs its own wayTooling and sequence matched to the material

How a cleaning runs

  • 1. Evaluation first. Vessel condition, material, access and hazards — every quote includes it.
  • 2. Lockout and setup on top. OSHA 30 / MSHA 46-48 trained crew, explosion-proof lighting where the dust demands it.
  • 3. Whip head works the buildup down — walls peeled layer by layer, outlet kept controlled, no surge dumping.
  • 4. Capacity verified and documented — before/after, plus the honest conversation about why it built up and what flow aids would keep it clean.

Booking a cleaning: what we need

  • Vessel size — diameter and height, or drawings if you have them
  • Material and how long it’s been standing
  • Symptom — total stoppage, erratic flow, or shrinking live capacity (see the rathole-vs-bridge guide)
  • Top access — manway size, and how the crew reaches the roof
  • History — last cleaning, and any flow aids installed

Frequently asked questions

Do we have to empty the silo first?

No. Draw it down as far as it will discharge; the whip works from the top surface downward and cleaned material exits through the normal outlet as work progresses.

Can you clean while the plant runs?

Often yes — the work happens from the top of the vessel, and many cleanings run in sections or during low-demand windows rather than a full outage.

What keeps the buildup from coming back?

Flow aids where the buildup formed: air cannons on a sequence timer, vibrators on hoppers and chutes, and a scheduled cleaning interval before buildup hardens. We spec all three.

The ACT Group

Applied Conveyor Technology — bulk material handling experts. Dust control, conveyor services, silo cleaning, parts, and engineering.

© 2026 The ACT Group (Applied Conveyor Technology). All rights reserved.