Podcast
Questions and Answers
What is the most common occupational disease?
What is the most common occupational disease?
Which occupational disease is most likely caused by exposure to petroleum products, grease, and solvents?
Which occupational disease is most likely caused by exposure to petroleum products, grease, and solvents?
Which statement best describes Cumulative Trauma Disorders (CTD)?
Which statement best describes Cumulative Trauma Disorders (CTD)?
What is the Li Index (LI) for lifting a 22lb weight if the NIOSH recommended Weight Limit (RWL) is 16lb?
What is the Li Index (LI) for lifting a 22lb weight if the NIOSH recommended Weight Limit (RWL) is 16lb?
Signup and view all the answers
What does a pocket dosimeter measure exposure to?
What does a pocket dosimeter measure exposure to?
Signup and view all the answers
What is the volume fraction of CO2 in a container with dimensions of 20 x 20 x 10 feet releasing 18.9 3 of CO2?
What is the volume fraction of CO2 in a container with dimensions of 20 x 20 x 10 feet releasing 18.9 3 of CO2?
Signup and view all the answers
How does an increase in air velocity affect heat stress?
How does an increase in air velocity affect heat stress?
Signup and view all the answers
Dilution ventilation is best suited for which situation?
Dilution ventilation is best suited for which situation?
Signup and view all the answers
Which type of exposure is typically most associated with dermatitis?
Which type of exposure is typically most associated with dermatitis?
Signup and view all the answers
Which of the following is NOT a factor in Cumulative Trauma Disorders (CTD)?
Which of the following is NOT a factor in Cumulative Trauma Disorders (CTD)?
Signup and view all the answers
What is the concentration of solvent vapor in a room after two hours under STP conditions?
What is the concentration of solvent vapor in a room after two hours under STP conditions?
Signup and view all the answers
Which factor is most important when designing a local exhaust system?
Which factor is most important when designing a local exhaust system?
Signup and view all the answers
What is the noise dose for a worker exposed to a 95dBA source for 5 hours?
What is the noise dose for a worker exposed to a 95dBA source for 5 hours?
Signup and view all the answers
What is the noise dose in percentage for a worker exposed to specified noise levels in a machine shop?
What is the noise dose in percentage for a worker exposed to specified noise levels in a machine shop?
Signup and view all the answers
The cochlea is an essential component of which part of the ear?
The cochlea is an essential component of which part of the ear?
Signup and view all the answers
Which statement about Noise Induced Hearing Loss (NIHL) is generally true?
Which statement about Noise Induced Hearing Loss (NIHL) is generally true?
Signup and view all the answers
Radioisotopes of a material are characterized by which condition?
Radioisotopes of a material are characterized by which condition?
Signup and view all the answers
If the half-life of Radon 222Rn86 is 3.8 days, how many days to reduce 1 gram to 1/16 of a gram?
If the half-life of Radon 222Rn86 is 3.8 days, how many days to reduce 1 gram to 1/16 of a gram?
Signup and view all the answers
What level of radiation can be expected at 6 feet away from a source emitting 0.06 rem at 2 feet?
What level of radiation can be expected at 6 feet away from a source emitting 0.06 rem at 2 feet?
Signup and view all the answers
Study Notes
Occupational Health and Ergonomics Q&A
- Occupational Disease: Dermatitis is the most common occupational disease.
- Occupational Disease Cause: Exposure to petroleum products, grease, and solvents is the most probable cause of dermatitis.
- Cumulative Trauma Disorders (CTD): CTDs are disorders resulting from repeated movements of body parts over a prolonged period.
- Lift Index (LI): If the NIOSH recommended weight limit (RWL) is 16lb, and the weight lifted is 22lb, the lift index is 1.375.
- Pocket Dosimeter: A device used to measure employee exposure to radiation, noise, vibrations, and airborne hazardous chemicals.
Radiation Measurement
- Radiation Measurement: A pocket dosimeter is used to measure employee exposure.
- Airborne Concentration Calculation : If a container measures 20 x 20 x 10 feet and contains 18.9 ft3 of CO2 released into the container, volume fraction of CO2 is 0.006.
Ventilation
- Dilution Ventilation: Best suited when air contaminants are not highly flammable or toxic and are not produced at high rates.
- Heat Stress: Increasing air velocity increases heat transfer rates by convection.
Noise Dose
- Noise Dose Calculation: If a worker is exposed to 95dBA sound for 5 hours, the noise dose is 125%.
Hearing Loss
- Cochlea: The primary part of the inner ear.
- Noise-Induced Hearing Loss (NIHL): High-frequency noise is more damaging than low-frequency noise; NIHL depends on both sound intensity and exposure time.
Radioactive Decay
- Radioisotopes: Radioisotopes of a given material have the same atomic number but different atomic masses
- Half-Life Calculation: Radon-222 (222Rn86) half-life is 3.8 days; it will take 15.2 days for one gram of radon to reduce to 1/16 of a gram.
- Radiation Measurement at Different Distances: At 2 feet from the source, radiation measurement is 0.06 rem; at 6 feet, it is 0.02 rem.
Erythema & Other Conditions
- Erythema Cause: Caused by overexposure to sunlight.
- Scotoma: A loss of vision in a portion of the visual field, primarily due to non-ionizing radiation exposure, especially Microwave.
Asphyxiant
- Simple Asphyxiant: Chemicals that interfere with normal hemoglobin function or reduce oxygen concentration, causing suffocation in the body.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
Test your knowledge on occupational health, including common diseases like dermatitis and cumulative trauma disorders. Learn about measurement tools like pocket dosimeters and concepts such as lift index and ventilation methods. This quiz will enhance your understanding of workplace ergonomics and health standards.
