HSE Occupational Health and Hygiene Questions and Answers

Question 1

An industrial hygienist measures a worker's exposure to a solvent during a specific 15-minute task.
To what type of Occupational Exposure Limit (OEL) should this short-term measurement be compared to determine if an immediate hazard exists?

Accepted Answer

Short-Term Exposure Limit (STEL)

Answer

Threshold Limit Value - Time-Weighted Average (TLV-TWA)

Answer

Permissible Exposure Limit (PEL)

Answer

Immediately Dangerous to Life or Health (IDLH)

Question 2

A manufacturing facility has identified that several employees are consistently exposed to noise levels at an 8-hour time-weighted average (TWA) of 87 dBA. According to OSHA's Hearing Conservation Program requirements, which action is mandatory for these employees?

Accepted Answer

Providing annual audiometric testing at no cost.

Answer

Mandatory use of dual hearing protection (earplugs and earmuffs).

Answer

Implementation of engineering controls to reduce noise below 85 dBA.

Answer

Restricting employee exposure time to less than 4 hours per shift.

Question 3

An assembly line task requires workers to use a hand tool that forces their wrist into an awkward, bent posture. Which of the following represents the most effective ergonomic control for this hazard?

Accepted Answer

Redesigning the tool with an angled handle to allow for a neutral wrist posture.

Answer

Training workers to perform wrist stretches every hour.

Answer

Providing workers with wrist braces to wear during the task.

Answer

Implementing a job rotation schedule to limit each worker's time on the task.

Question 4

A healthcare professional must enter the room of a patient with a confirmed airborne infectious disease, such as tuberculosis. What is the minimum level of respiratory protection required to prevent inhalation of infectious aerosols?

Accepted Answer

A NIOSH-certified N95 respirator.

Answer

A standard surgical mask.

Answer

A full-face shield.

Answer

Safety goggles and a cloth face covering.

Question 5

A worker is cleaning equipment with a volatile solvent in a confined space. This exposure is most likely to cause rapid, systemic toxic effects through which primary route of entry?

Accepted Answer

Inhalation

Answer

Dermal absorption

Answer

Ingestion

Answer

Injection

Question 6

Under OSHA's Hazard Communication Standard (HCS), which of the following information is required in Section 8 of a Safety Data Sheet (SDS) but is NOT required on the shipped container's label?

Accepted Answer

Specific Occupational Exposure Limits (e.g., PELs, TLVs).

Answer

The Signal Word (e.g., 'Danger' or 'Warning').

Answer

A Pictogram representing the primary hazard.

Answer

A Hazard Statement (e.g., 'Causes skin irritation').

An industrial hygienist measures a worker's exposure to a solvent during a specific 15-minute task.To what type of Occupational Exposure Limit (OEL) should this short-term measurement be compared to determine if an immediate hazard exists?

An industrial hygienist measures a worker's exposure to a solvent during a specific 15-minute task.
To what type of Occupational Exposure Limit (OEL) should this short-term measurement be compared to determine if an immediate hazard exists?