Dust and Fumes (Respiratory Hazards)
Silica, wood and general dust, welding or engine fumes, source control, ventilation and suitable respiratory protection.
How to prepare for the CITB Operatives test
Connect hazard recognition with safe action: stop, protect, follow the site system and escalate to the right competent person.
Core concepts
Concept 1
Construction dust and fumes can cause serious long-term disease even when no immediate discomfort is felt.
Exam cue: Ask what creates the airborne contaminant and control it there.
Concept 2
Eliminate or reduce the process, use on-tool extraction, water suppression or ventilation, and keep others outside the exposure zone.
Exam cue: Keep extraction close to the source and maintain it as instructed.
Concept 3
Respiratory protective equipment must match the contaminant and task, fit the wearer and be used with source controls.
Exam cue: Do not dry sweep hazardous dust or rely on a disposable mask without assessment and fit.
Risk pitfalls and guardrails
Judging exposure only by whether a dust cloud is visible.
Guardrail: Do not solve a missing guard, isolation, barrier, competent plan or engineering control only with a warning or PPE.
Using water near incompatible electrical equipment without planning.
Guardrail: Do not solve a missing guard, isolation, barrier, competent plan or engineering control only with a warning or PPE.
Treating an open door as adequate ventilation for fumes in an enclosed space.
Guardrail: Do not solve a missing guard, isolation, barrier, competent plan or engineering control only with a warning or PPE.
Memory anchors
Control at Source
Change the process, suppress or extract the contaminant where it is created.
Invisible Can Harm
Fine respirable particles and fumes may be dangerous without an obvious cloud.
Wet or Extract
Use the assessed engineering method instead of uncontrolled dry cutting or sweeping.
RPE Must Fit
The correct filter is ineffective if the facepiece does not seal or is worn wrongly.
Ventilation Needs Proof
Air movement must actually remove or dilute the contaminant safely.
Protect the Bystander
Use enclosure, exclusion and sequencing so others are not exposed.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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