Before arranging a deep clean in a manufacturing facility, decide which areas are ordinary housekeeping and which require a specialist safety assessment. Dust on an office cabinet and residue beside a production machine may look similar, but appearance alone does not establish whether the same cleaning method is suitable.
For Ontario facility managers, a useful handover document identifies the material, the work area, the approved method, access conditions and the person authorized to release the space. The aim is not to make a cleaning contractor responsible for hazards that have never been assessed. It is to make the boundaries clear before work begins.
Key takeaways
- Identify process dust before selecting equipment or a removal method.
- Treat unknown residue as a reason to stop and ask, not an invitation to improvise.
- Do not use compressed air as a default cleaning shortcut.
- Separate ordinary housekeeping from machinery servicing and hazardous-energy work.
- Put access approval, exclusions and escalation contacts in writing.
Why should dust be identified before cleaning starts?
The CCOHS guidance on combustible dust explains that finely divided materials can catch fire or explode when dispersed in air and exposed to an ignition source. Examples include wood, some metals, textiles and various organic powders. A material that does not seem readily combustible in its bulk form can behave differently as fine particles.
The practical lesson is not that all industrial dust is combustible. It is that the cleaning team should not decide the material's hazards from its colour, texture or apparent quantity.
Ask the production or health and safety lead what generates the residue, which product information is available and whether a competent person has assessed its hazards. CCOHS notes that common visual rules of thumb about dust thickness are not always reliable. Some situations may require testing or specialist assessment.
A routine housekeeping agreement should therefore exclude unidentified or hazardous process residue until the facility has established an appropriate plan. This article is a planning resource, not a dust-hazard assessment or operating procedure.
Create a handover checklist before inviting quotations
The following checklist is an editorial planning tool. It is not a substitute for site-specific procedures, training or legal requirements.
| Question | Information to provide | What to avoid assuming |
|---|---|---|
| What material is present? | Process description, available safety data sheets and relevant assessment | All visible dust is harmless general soil |
| Where can work take place? | Approved floor areas, restricted zones and access windows | A quiet machine or empty aisle is automatically safe |
| Which method is suitable? | Site-approved procedure and equipment requirements | A standard vacuum is appropriate for every residue |
| Who controls access? | Named supervisor and release arrangements | Cleaning staff can authorize their own entry |
| What is excluded? | Machinery interiors, unknown spills and specialist work | A general cleaning quotation includes remediation |
| How are problems reported? | Contact person, stop-work process and incident reporting | Crews should finish first and report later |
Use Arelli’s industrial and trade facility cleaning page to begin a discussion about agreed building housekeeping. The facility walkthrough must establish what is actually within scope; a service-page description is not approval to handle hazardous dust.
Why is compressed air a poor default shortcut?
Blowing residue away can move the problem rather than remove it. The CCOHS resource on cleaning with compressed air describes hazards from flying particles, airborne contaminants and the potential for fire or explosion when combustible dust becomes suspended.
That resource also explains that restrictions differ by jurisdiction and material. Do not turn an air-pressure figure from another province into a universal Ontario permission. A lower pressure alone does not establish that a task is safe.
For the proposed cleaning work, ask the site's safety lead to approve a method that controls the material instead of redistributing it. Depending on the assessment, this may involve a compatible wet method or equipment specifically suitable for the dust and environment. An ordinary vacuum should not be substituted just because it is readily available.
Do not blow dust from clothing or the body. Do not use a compressed-air hose as a workaround when the agreed equipment cannot reach a surface. Stop and arrange the correct access and method.
Keep machinery cleaning separate from routine housekeeping
A machine being switched off is not the same as its hazardous energy being isolated. Cleaning near or inside equipment may expose people to unexpected movement or stored energy, even outside normal production hours.
The CCOHS explanation of lockout/tag out distinguishes equipment controls from energy-isolating devices: push buttons and selector switches are not energy-isolating devices. Its guidance describes equipment-specific procedures, verification of isolation and responsibilities for trained, authorized people.
A janitorial instruction should not become a simplified lockout manual. Instead, the contract should state whether machinery-related work is excluded and who manages any required hazardous-energy control. Cleaning staff must not remove guards, reach into equipment or bypass a site's safety procedures to complete a task.
Where specialist work is required, the facility must coordinate the appropriate qualified people and procedures before access is released. A written cleaning schedule is not authorization to service a machine.
What should happen when the site changes?
A new product, production line or process can change the material entering an area. A method that was approved for yesterday's ordinary housekeeping may not be suitable for a different residue today.
Create a simple escalation route. If staff encounter an unknown spill, unusual powder or unexpected accumulation, they should stop the affected task, keep clear and report it through the site's procedure. The responsible facility lead can then determine the next step.
Review the cleaning boundaries after changes to production, layout or equipment. Keep the agreed task list separate from specialist maintenance requirements so neither disappears into a vague instruction to “clean everything.”
Inspect the boundary—not just the finished floor
After service, check whether the approved work was completed and whether excluded areas remain clearly identified. Record recurring dust accumulation as a finding for the facility lead, not proof that the cleaning crew should simply vacuum more often.
Useful review questions include:
- Did crews receive access to all agreed areas?
- Were any tasks stopped because conditions differed from the handover?
- Does residue return quickly near a process or collection point?
- Are housekeeping and specialist responsibilities still understood?
- Do the written instructions need updating before the next visit?
These checks help distinguish a missed cleaning task from a process-control or access problem. They do not replace engineering controls or a competent safety assessment.
Request a proposal with clear boundaries
Send potential providers the same area list, access information and exclusions. Compare agreed housekeeping tasks rather than assuming the cheapest proposal includes every kind of industrial residue or equipment cleaning.
Review Arelli’s cleaning pricing guidance for general cost considerations, then request a site-specific industrial cleaning discussion. The proposal should document what will be cleaned, what needs separate specialist attention and how the facility will authorize safe access.
A better cleaning handover starts with clear information. Identify the material, define the boundary and agree on the method before work begins.
