Confined Space Risks in Industrial Silos

A confined space is defined as an enclosed or partially enclosed space not designed for permanent occupancy, with limited access, and may have a hazardous atmosphere. Silos meet all criteria. In Norway, regulated by Work Execution Regulation Chapter 29. In the EU, Directive 92/57/EEC applies, in the US, OSHA 29 CFR 1910.146.

Before silo entry, risk assessment, work permits, atmospheric testing for oxygen (min 19.5%), combustible gases, and toxic gases must be conducted. All mechanical equipment must be isolated with lockout/tagout. Safety watch and rescue team must be available.

A disproportionately high percentage of workplace fatalities occur in confined spaces. Many accidents involve would-be rescuers attempting to save the first person without proper equipment. Typical scenarios: burial from material collapse, loss of consciousness from oxygen deficiency, falls, and crush injuries from equipment.

Employers are legally required to have written confined space procedures, train all affected employees, document all entries and incidents, and have rescue plans. Non-compliance can result in significant fines and criminal liability.

Blue Power's mechanical cleaning technology eliminates the need for silo entry. Equipment is introduced through standard openings and removes material effectively from outside. For inspection, cameras and sensors can provide information without entry.

Total cost of silo entry includes risk assessment, work permits, atmospheric testing, safety watches, rescue standby, and PPE - often more than the actual work. Traditional cleaning takes 2-5 days, mechanical external cleaning takes hours.