CAC Safety, Tools, and Equipment Flashcards
6 cards from real CAC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CAC Safety, Tools, and Equipment flashcards as text
Which OSHA regulation is most relevant to trenching and excavation safety during pond installation projects?
Answer: OSHA 1926 Subpart P — Excavations
OSHA 1926 Subpart P governs excavation safety including protective systems, sloping requirements, and soil classification for trenching work.
What is the purpose of using underlayment fabric beneath a pond liner?
Answer: It protects the liner from puncture by roots, rocks, and sharp soil particles
Underlayment creates a cushioning layer between the liner and substrate, protecting against punctures from sharp objects and root penetration over time.
When a pond pump intake becomes clogged on a job site during commissioning, what is the safest first step?
Answer: Disconnect power to the pump before inspecting or clearing the intake
Always disconnect power before working on or near a submersible pump to eliminate the risk of electrical shock.
What tool is most useful for measuring the exact flow rate of a waterfall or stream feature to verify pump sizing?
Answer: Five-gallon bucket and stopwatch timed fill test
The bucket-and-stopwatch method measures actual GPM by timing how long the outlet flow takes to fill a known volume, verifying the pump delivers the specified flow.
Which safety signage or barrier is required when an open pond excavation must remain unattended overnight on a residential job site?
Answer: Temporary fencing or barriers around the excavation perimeter with hazard warning tape and lighting if near a public area
Temporary perimeter fencing and hazard barriers are required to prevent falls into open excavations, protecting children, pets, and visitors from injury.
What is the most important reason to flush new pond plumbing lines with water before connecting them to the biological filter?
Answer: To remove pipe debris, cutting oils, and solvent cement residue that could harm beneficial bacteria and fish
New plumbing can contain debris, cutting oils, and solvent cement residue that are toxic to fish and disruptive to beneficial bacterial colonies in the filter.