Question

question 12 (1 point)
you are applying mek inside a small mechanical room with limited airflow. what is the most important control measure?

work faster to reduce exposure time
keep the container lid fully open
ensure proper ventilation or use local exhaust
wear cotton gloves only

question 13 (1 point)
when working around strong solvent fumes, which symptom indicates you should leave the area immediately?

increased appetite
dizziness or lightheadedness
mild muscle soreness
improved focus

Explanation:

Analyze control measures for MEK exposure in confined spaces

MEK (Methyl Ethyl Ketone) is a highly volatile and toxic solvent. In a small room with limited airflow, the accumulation of hazardous vapors poses severe inhalation and fire risks. According to the hierarchy of hazard controls, engineering controls such as ensuring proper ventilation or using local exhaust are the most effective and critical measures to reduce vapor concentration.

Identify acute symptoms of solvent overexposure

Inhalation of concentrated solvent fumes directly affects the central nervous system. Symptoms such as dizziness, lightheadedness, nausea, or headache indicate acute overexposure and oxygen deprivation, requiring immediate evacuation to fresh air.

Answer:

Question 12

• (A) Work faster to reduce exposure time
• (B) Keep the container lid fully open
• (C) Ensure proper ventilation or use local exhaust (Correct answer)
• (D) Wear cotton gloves only

Question 13

• (A) Increased appetite
• (B) Dizziness or lightheadedness (Correct answer)
• (C) Mild muscle soreness
• (D) Improved focus