CEA Jobsite Safety Procedures 2 — Questions and Answers
Question 1: What is the minimum approach distance an unqualified worker must maintain from an energized 480V overhead line?
- 1 foot
- 3 feet
- 10 feet (Correct answer)
- 25 feet
Correct answer: 10 feet
OSHA requires unqualified persons to stay at least 10 feet away from energized lines up to 50kV.
Question 2: A 'hot work permit' is typically required before performing which of the following tasks on a jobsite?
- Installing conduit
- Grinding metal near flammable materials (Correct answer)
- Pulling wire through conduit
- Terminating conductors in a panel
Correct answer: Grinding metal near flammable materials
Hot work permits are required for operations like grinding, welding, or cutting that produce sparks near flammable or combustible materials.
Question 3: When should an electrical apprentice inspect their personal protective equipment (PPE)?
- Monthly during a scheduled inspection
- Only when visually damaged
- Before each use (Correct answer)
- At the start of each work week
Correct answer: Before each use
PPE must be inspected before each use to ensure it is free of damage and will provide the intended protection.
Question 4: Which OSHA standard governs electrical safety in general industry workplaces?
- 29 CFR 1926 Subpart K
- 29 CFR 1910 Subpart S (Correct answer)
- 29 CFR 1910 Subpart E
- 29 CFR 1926 Subpart P
Correct answer: 29 CFR 1910 Subpart S
29 CFR 1910 Subpart S covers electrical safety standards for general industry workplaces.
Question 5: What is the purpose of a safety data sheet (SDS) on a construction jobsite?
- To document worker injuries
- To provide hazard and safe handling information for chemicals (Correct answer)
- To list required PPE for all tasks
- To record equipment inspection dates
Correct answer: To provide hazard and safe handling information for chemicals
An SDS provides detailed information about chemical hazards, safe handling, storage, and emergency procedures.
Question 6: A trench is 6 feet deep and 4 feet wide. What is required before workers may enter?
- A spotter stationed at the top
- Proper sloping, shoring, or a trench box (Correct answer)
- A site supervisor present at all times
- Rubber boots rated for the soil type
Correct answer: Proper sloping, shoring, or a trench box
OSHA requires all trenches 5 feet or deeper to have a protective system such as sloping, shoring, or a trench box before entry.
Question 7: Which of the following best describes a 'near miss' on a jobsite?
- An injury that required first aid only
- An event that could have resulted in injury but did not (Correct answer)
- A property damage incident without injuries
- A safety violation observed by OSHA
Correct answer: An event that could have resulted in injury but did not
A near miss is an unplanned event that did not result in injury or damage but had the potential to do so.
CEA Jobsite Safety Procedures 2
What is the minimum approach distance an unqualified worker must maintain from an energized 480V overhead line?