Free CHST diagnostic: where do you stand?

25 questions spread across the 4 domains of the official CHST5 Examination Blueprint blueprint by weight, timed at real-exam pace (72 seconds per question; BCSP allows 4 hours for the CHST). About 30 minutes. Free, no card.

✓A readiness estimate, weighted like the real exam
✓Your score in each blueprint domain
✓Every answer explained, with the exact rule quoted
✓A daily plan sized to your exam date
See what every answer looks like

A crew is working in a permit space that was reclassified as a non-permit space after hazards were eliminated. Partway through the shift, a worker's monitor shows a new hazard developing inside the space. What must happen first?

  1. A. Only the employee nearest the hazard must exit, while the rest finish the task before reevaluation
  2. B. Each employee in the space must exit, and the entry employer then reevaluates and reclassifies the space as a permit space as appropriate
  3. C. The entry employer may keep the space classified as non-permit as long as the hazard is documented on the original certification
  4. D. The attendant may remain at the opening while the entrants continue working under continuous monitoring

When hazards arise in a space that was reclassified as non-permit, every employee must exit, and the entry employer then reevaluates and reclassifies it as a permit space as appropriate. Letting some workers stay or continuing work under the old classification ignores the exit requirement.

Source29 CFR 1926.1203(g)(4) ↗
“If hazards arise within a permit space that has been reclassified as a non-permit space under paragraph (g) of this section, each employee in the space must exit the space. The entry employer must then reevaluate the space and reclassify it as a permit space as appropriate in accordance with all other applicable provisions of this standard.”