Confined Spaces: South Africa's Hidden Killer
Confined space incidents in South Africa are disproportionately fatal. The reason is tragically simple: untrained rescuers enter to help and become victims themselves. Studies show that up to 60% of confined space fatalities are would-be rescuers.
Under the General Safety Regulations (GSR 5), employers have explicit obligations regarding confined space work. Non-compliance isn't just dangerous — it's criminal.
What Qualifies as a Confined Space?
A confined space is any enclosed or partially enclosed space that:
- Is not primarily designed for human occupancy
- Has restricted entry or exit
- May have an atmosphere that is hazardous or could become hazardous
- May contain engulfment hazards (grain, water, sewage)
- Has internal configurations that could trap an entrant
Common examples: Tanks, silos, manholes, pipelines, boilers, pits, trenches deeper than 1.5m, roof voids, vessel internals.
Regulatory Requirements
General Safety Regulation 5 (GSR 5)
- Written procedures for entry into confined spaces
- Competent person must conduct atmospheric testing
- Continuous monitoring during occupation
- Standby person stationed at the entrance at all times
- Emergency rescue procedures in place before entry
- Written permit-to-work system
General Administrative Regulation 8
- Report any incident where a worker is injured or overcome in a confined space
The Permit-to-Work System
A confined space entry permit must document:
- Location and description of the confined space
- Purpose of entry and expected duration
- Hazard identification — atmospheric, physical, biological
- Atmospheric test results — O₂, flammable gases, toxic gases
- Control measures — isolation, ventilation, PPE requirements
- Communication plan — between entrant and standby person
- Rescue plan — equipment, trained personnel, emergency services contact
- Authorisation signatures — supervisor, entrant, standby person
Atmospheric Monitoring Requirements
| Gas/Condition | Acceptable Range | Action Level |
|---|---|---|
| Oxygen (O₂) | 19.5% – 23.5% | Below 19.5% or above 23.5%: DO NOT ENTER |
| Flammable gases | <10% LEL | >10% LEL: ventilate and retest |
| H₂S | <10 ppm | >10 ppm: evacuate immediately |
| CO | <25 ppm | >25 ppm: investigate source |
| CO₂ | <5,000 ppm | >5,000 ppm: increase ventilation |
Training Requirements
Every person involved in confined space work needs appropriate training:
| Role | Training Required |
|---|---|
| Entrant | Confined space awareness + hazard-specific training |
| Standby Person | Confined space procedures + emergency communication |
| Entry Supervisor | Full confined space management + permit authorization |
| Rescue Team | Confined space rescue + first aid + equipment use |
| Atmospheric Tester | Gas detection equipment operation + calibration |
OHS Compliance Group's Confined Space Programme
Our confined space training is hands-on and practical:
- Theory module covering regulations, hazard identification, and permit systems
- Practical atmospheric testing using calibrated multi-gas detectors
- Simulated entries in controlled confined space training units
- Rescue scenarios with retrieval systems and self-contained breathing apparatus
- Permit writing workshop producing permits compliant with GSR 5
Our facilitators have managed confined space programmes for Transnet's pipeline operations, Eskom's power stations, and municipal water infrastructure projects.
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