FREE Construction Health and Safety Technician MCQ Questions and Answers Flashcards

Under OSHA's lead standard for construction (29 CFR 1926.62), the action level (AL) for lead exposure is:

Answer: 25 µg/m³ as an 8-hour TWA

The action level for lead in construction is 25 µg/m³ as an 8-hour time-weighted average, which triggers medical surveillance and monitoring requirements.

A contractor is working at heights and must decide between a personal fall arrest system and a positioning device. What is the key functional difference?

Answer: Personal fall arrest systems stop free falls; positioning devices hold workers in place to work with both hands free

A personal fall arrest system (PFAS) stops a worker after a free fall begins, while a positioning device keeps the worker supported hands-free at an elevated work position.

Which type of fire extinguisher should be used on energized electrical equipment fires?

Answer: Class C

Class C fire extinguishers use non-conductive agents and are rated for use on fires involving energized electrical equipment.

During a confined space entry on a construction site, the attendant's PRIMARY role is to:

Answer: Keep track of authorized entrants and initiate rescue procedures without entering

The attendant must track entrants and initiate rescue (non-entry rescue or emergency services) but must NOT enter the permit space during an emergency.

According to ANSI/ISEA Z89.1, which hard hat class provides the highest level of electrical protection?

Answer: Class E (Electrical)

Class E hard hats are tested to 20,000 volts and provide the highest level of electrical protection under ANSI/ISEA Z89.1.

What is the primary purpose of a Safety Data Sheet (SDS) Section 8 (Exposure Controls/Personal Protection)?

Answer: List regulatory exposure limits and recommend appropriate PPE

SDS Section 8 lists OELs (such as OSHA PELs and ACGIH TLVs) and specifies engineering controls and PPE required to minimize worker exposure.

A construction company's Experience Modification Rate (EMR) is 1.35. What does this indicate?

Answer: The company's injury costs are 35% above the industry average

An EMR above 1.0 means the employer's workers' compensation losses exceed the industry average; 1.35 indicates costs are 35% higher than average.