Essential Guide to Workplace Safety and Health
Workplace Safety and Health: A Comprehensive Guide
Manual Handling and Electrical Safety
In a storage area where goods are handled manually, the heaviest items should be placed at: a proper height for manual handling.
It is true that in a tower crane, the metal part is effectively grounded. This statement is accurate: hoisted loads should be transported without shaking and be properly secured or strapped.
The main variables of electrical contact that can cause electrocution are: intensity and time of contact.
Regarding the passage of electrical current through the human body, there is another way to experience electrical shock: exposure to high-temperature electric arcs.
Protection through grounding of the masses associated with a cutting device is fundamental: all of the above precautions are essential.
For electrical tension, we use: all of the above safety measures.
To safely discharge a capacitor, we will install the following in the correct order: cut, block, verify the absence of voltage, earthing and short-circuit, and signal the work area.
Fire Safety
For a fire to occur, the following elements must co-exist: fuel, oxidizer, heat, and a chemical reaction.
Which type of fire extinguisher is most appropriate for extinguishing a fire of solid fuel in the presence of low-voltage electrical installations? Multipurpose powder extinguishers are recommended.
When we decrease the ratio of oxygen to extinguish a fire, we are employing the technique of: suffocation.
The most common causes of fire, in descending order, are: electricity, friction, abrasion, metal sparks, smoking, and welding.
Of the following measures for the storage of flammable products, one is incorrect. Which is it? Do not transfer flammable products outside designated storage areas.
The most effective way to prevent fires is to act on: sources of ignition.
Occupational Hygiene
In hygienic methods, the first step is: identify contaminants in the workplace.
What is the order of performance in operational hygiene in a situation of danger? 1. Point or source, 2. In the middle, and 3. Receiver.
When following the hygiene methodology and we are in a safe environment, we must: take regular monitoring measures and inform workers.
Analytical hygiene is responsible for: establishing the results of contaminant samples.
Physical contaminants are manifested as: various forms of energy.
What are the pathways of chemicals into the body? Digestive, parenteral, respiratory, and dermal.
The environmental limit value for daily exposure (VLA-ED) is: the value that should not be exceeded during the workday.
Ergonomics and Workplace Design
Job rotation is a control measure applied to: the receiver.
The maximum permissible exposure (MPE) is calculated according to: concentration and exposure time.
General ventilation is a control measure applied to: the environment.
Which of the following statements about radiation in the workplace is NOT correct? Ionizing radiation is produced only by artificial sources.
The study of physical agents aims to evaluate the health effects arising from: any manifestation of energy.
The current legislation on noise in the workplace determines: a daily equivalent limit value of 87 dB(A) that should not be exceeded under any circumstances.
To mitigate heat stress in hot environments, it is critical to: reduce physical activity, provide shade, and establish proper airflow.
Any activity requires a certain level of light in the work area, which depends on the following factors: size and speed of movement of the detail, contrast, focal length, and age of the worker.
Assuming an equal level of vibration at work from 8 am daily, which of the following situations is more dangerous? The use of a tractor to plow.
Biological and Chemical Hazards
Which of the following parameters are used to classify a biological agent into a risk group? Ease of spread.
Biological contaminants are classified as: living organisms.
Measures to control biological agents at the source, medium, and receiver are, in the same order: enclosure of the process, cleaning, and medical surveillance.
When designing a job, we should take into account the body dimensions of individuals. We should consider the reach, effort, posture, etc., of the people who will perform the tasks.
If the job requires physical exertion, the working surface should be, in relation to the elbows: lower.
The most favorable stance for workers with Peripheral Vascular Disease (PVD) should be: the height of the bench should match the elbows.
Localized ventilation is required when: the contaminant is very dangerous and the source of the pollutant is localized.
Which element is NOT part of a localized ventilation system? Hydrometric control system.
Signage, Personal Protective Equipment, and Maintenance
Signage is a preventive measure that: complements other safety measures.
Some of the information that a label of a hazardous chemical should contain is: all of the following are correct.
For the implementation of a safety rule, it is necessary: the participation of the workers involved.
Corrective maintenance usually involves: all of the above are true.
Regarding collective protection: it protects several workers simultaneously.
Personal protective equipment (PPE) should be used: as a last resort when other measures have failed to prevent or reduce the risk.