Construction noise, radiation and lasers
CHST written lesson, 9 min read. CHST Domain 1: Hazard and Risk Identification and Control
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
- Read Table D-2 and state the permissible sound level for a given daily duration
- Compute the equivalent noise exposure factor (Fe) and interpret the result
- Sequence controls and ear protection correctly when sound levels exceed the table
- State who may use radioactive materials and X-rays on a construction site
- Apply the laser, light-intensity and microwave requirements and their units
What this lesson covers
This lesson covers how construction noise is measured and limited, when hearing protection and a hearing conservation program are required, who may work with radiation sources, and the limits that govern lasers and microwaves. These are common exam items because each rests on a specific threshold, unit or qualification rule.
This lesson is included with a pass
Written lessons come with every CHST 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 noise, hearing protection, radiation and lasers practice questions
Visualize this
- Add hours at different levels and watch the dose pass the action level and the PEL.
An interactive diagram, included with every CHST pass.