Confined Space Awareness
Recognizing confined spaces and controlling their hazards: definitions and inventories, OSHA 1910.146, Subpart AA and ANSI/ASSP Z117.1, oxygen deficiency and enrichment, flammable and toxic gases, gas testing and monitoring, engulfment and isolation, ventilation and inerting, entry permits and roles, rescue planning, incident lessons and a capstone entry plan.
HSE-211 12 lessons · 5 h 12 min
Offered by HSM University · Safety Training
This is the American version of this course. See the Canadian version.
What you'll learn
- Define a confined space, recognize confined spaces in different sectors and explain why their hazards so often kill workers and would-be rescuers
- Describe 29 CFR 1910.146, Subpart AA, related OSHA standards, ANSI/ASSP Z117.1 and how confined space rules are enforced
- Identify, classify and inventory confined spaces, secure their openings and look for ways to avoid entry
- Explain how oxygen deficiency and enrichment occur, their effects on the body, and how to interpret oxygen readings including at altitude
- Explain flammable limits and percent LEL, identify common toxic gases, convert ppm to mg/m³ and compare exposure limits
- Describe how gas detectors work, the testing sequence, sampling at several levels, bump testing, calibration, continuous monitoring and alarm response
- Recognize engulfment, flooding, entrapment, energy, temperature, electrical, fall and biological hazards and the methods used to isolate a space
- Explain cleaning, purging, ventilation and inerting, and estimate purge times and delivered airflow
- Describe the contents of an entry permit and the duties of entrants, attendants and entry supervisors, including communication methods
- Plan confined space rescue using self-rescue, non-entry retrieval and entry rescue, and judge whether a rescue service can respond in time
- Analyze confined space incidents using barrier analysis and identify the common contributing factors
- Explain how confined space programs, training, contractor coordination and reviews are managed, and draft an entry plan for a typical space
Course content
12 lessons · 5 h 12 min total · final exam
- 1 What makes a confined space and why confined spaces kill 23 min · quiz
- 2 OSHA confined space standards and the law in the US 23 min · quiz
- 3 Identifying, classifying and inventorying confined spaces 25 min · quiz
- 4 Atmospheric hazards: oxygen deficiency and enrichment 27 min · quiz
- 5 Flammable and toxic atmospheres 29 min · quiz
- 6 Gas testing and atmospheric monitoring 27 min · quiz
- 7 Physical hazards, engulfment and isolation 25 min · quiz
- 8 Ventilation, purging and inerting 27 min · quiz
- 9 Entry permits, roles and communication 25 min · quiz
- 10 Rescue planning and emergency response 27 min · quiz
- 11 Learning from confined space incidents 26 min · quiz
- 12 Managing the program and capstone: writing an entry plan 28 min · quiz
- E Final exam 20 questions
Requirements
Recommended background. You can start any course at any time.
Description
Recognizing confined spaces and controlling their hazards: definitions and inventories, OSHA 1910.146, Subpart AA and ANSI/ASSP Z117.1, oxygen deficiency and enrichment, flammable and toxic gases, gas testing and monitoring, engulfment and isolation, ventilation and inerting, entry permits and roles, rescue planning, incident lessons and a capstone entry plan.