Permit-required confined spaces
ASP written lesson, 11 min read. ASP Domain 2: Safety Programs and Concepts
AI-drafted from the cited rules and fact-checked against them. Study aid, not site-specific safety advice. The official rule controls.
What you'll learn
- Apply the three confined-space tests and four permit-space characteristics
- State the hazardous atmosphere thresholds and the required testing order
- Explain when alternate procedures and reclassification are allowed
- Assign duties among entrants, attendants, supervisors, hosts and contractors
- Identify the permit retention and program review deadlines
What this lesson covers
This lesson separates ordinary confined spaces from permit-required ones, then walks through the atmospheric thresholds, the testing order, the alternate ventilation-only procedure, reclassification, entry roles and program review. These are the points the exam tests most and the ones that decide whether an entry is safe on the job.
This lesson is included with a pass
Written lessons come with every ASP pass, along with the video lessons, the question bank, mocks and the tutor. $80 per exam or $143 for all three, for 180 days.
Try the free permit-required confined spaces practice questions