Confined Spaces
Avoid entry and control specified risks through isolation, testing, ventilation, communication and rescue.
How to prepare for SSSTS
Connect each duty and hazard to the supervisor's workface sequence: check the task and RAMS, brief the team, establish controls, observe and intervene, then report and learn.
Core concepts
Concept 1
A confined space is defined by enclosure plus a reasonably foreseeable specified risk, not by size alone.
Exam cue: Identify the specified risk and whether the task can be completed externally.
Concept 2
Entry should be avoided where possible; necessary entry needs a safe system and often permit control.
Exam cue: Test the atmosphere appropriately before and during entry.
Concept 3
Isolation, atmosphere testing, ventilation, communication, supervision and rescue must work together.
Exam cue: Verify rescue people and equipment are immediately available and suitable.
Risk pitfalls and guardrails
Calling every small enclosure a confined space without checking specified risk.
Guardrail: Do not use a signature, course certificate or verbal instruction as a substitute for a missing competent plan or physical control.
Using oxygen-only testing where toxic or flammable atmospheres are possible.
Guardrail: Do not use a signature, course certificate or verbal instruction as a substitute for a missing competent plan or physical control.
Allowing an unplanned rescuer to enter after a collapse.
Guardrail: Do not use a signature, course certificate or verbal instruction as a substitute for a missing competent plan or physical control.
Memory anchors
Enclosure Plus Risk
Both elements define the confined-space problem.
Avoid Entry First
Use remote methods where practicable.
Isolate, Test, Ventilate
Control energy and atmosphere before entry.
Rescue Before Entry
Plan recovery before anyone goes in.
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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