The work environment is often a place where excessive noise can lead to serious health problems for employees. Understanding its levels at the workplace and taking protective measures are essential to ensure the safety and comfort of workers.

How are noise levels measured at the workplace?

Measuring noise levels at the workplace is the first step toward controlling and reducing the risk of hearing damage and other health issues.

The first step is to determine whether it poses a potential problem. Here are some signs indicating dangerous noise levels:

1. Noise is higher than urban traffic

If the noise in the work environment is more intense than that of busy urban traffic, this is a clear indicator of potentially dangerous levels. In such cases, workers may have difficulty hearing surrounding sounds or communicating effectively.

2. Employees must raise their voices to speak at a meter distance

If employees have to raise their voices significantly to be heard by colleagues about a meter away, this is another sign of dangerously high levels. This not only increases stress and fatigue but can also lead to long-term hearing damage.

3. Difficulty hearing radio or television in the work environment

If under normal conditions employees cannot clearly hear the sound of a radio or television, it means that noise levels at the workplace exceed safe limits. Such a situation not only hinders concentration and communication but also increases the risk of hearing damage and other health problems.

Specialized devices and techniques such as sound dosimeters and sound level meters are used to measure noise levels at the workplace. These devices measure sound pressure levels in decibels (dB), allowing precise assessment of noise exposure.

It is important to determine whether the noise is continuous, variable, intermittent, or impulsive. This information helps in choosing appropriate devices and measurement techniques. Additionally, workplace noise level analysis should be conducted over different time intervals to accurately assess exposure.

What are the legally defined limit values of the indicator?

To ensure worker safety, legislation sets limits for permissible noise exposure levels. Directive 2003/10/EC establishes minimum requirements for protecting workers from noise risks.

The exposure limit value is defined as Lex, 8h = 87dB(A) for the daily noise exposure level and Ppeak = 200 Pa for peak sound pressure. These values must not be exceeded.

There are two exposure action values:

• Higher: Lex,8h = 85 dB(A) and ρpeak = 140 Pa;

• Lower: Lex,8h = 80 dB(A) and ρpeak = 112 Pa.

They serve as indicators for taking protective measures without exceeding exposure limit values.

What problems does exposure to excessive noise cause?

Exposure to excessive noise in the workplace can lead to serious health problems. It affects not only the auditory system but also the overall health of the employee.

Indirectly, industrial noise affects:

• Nervous system – impaired attention, rapid fatigue, irritability;

• Cardiovascular system – increased blood pressure, heart function disorders;

• Digestive system – increased frequency of gastritis and ulcers;

• Visual analyzer – reduced resistance to clear vision and changes in color perception;

• Endocrine system – changes in metabolic processes.

Excessive noise leads to subjective complaints such as headaches, tinnitus, dizziness, sleep disturbances, and mood changes. Directly, it can cause partial or permanent hearing damage as well as acute acoustic trauma.

What preventive obligations do workers and employers have?

Workers and their employers have the obligation to take measures to protect against noise in the workplace. Employers must develop and implement programs of technical and organizational measures to reduce levels, including:

1. Noise reduction program

Includes the use of quieter machines and technologies, insulation of noisy rooms, and provision of Personal protective equipment.

2. Training and information

Workers must be informed about the risks and trained in the proper use of protective equipment.

3. Marking of noisy zones

Areas where noise levels exceed the limit values set in regulations must be clearly marked.

4. Medical examinations

Regular hearing checks for all employees exposed to high noise levels to detect damage early.

Workers must wear personal protective equipment where noise levels reach or exceed the upper action values.

Hearing protection requirements according to DIN EN 352 standards

The DIN EN 352 standards regulate the requirements for various types of hearing protection used in work environments. They cover general and specific requirements for products such as earmuffs, earplugs, hearing protection helmets, and noise protection suits for the workplace. Each type is intended for different noise conditions and specific applications. The main standards are:

1. DIN EN 352-1

Regulates earmuffs that cover the outer ear, specifying requirements for those attached to industrial helmets and those with additional features such as active noise cancellation and communication devices.

2. DIN EN 352-2

Describes the requirements for earplugs worn inside the ear canal. This standard is suitable for conditions of constant noise and when earmuffs cause discomfort such as excessive sweating.

3. DIN EN 352-3

Specific to earmuffs attached to industrial helmets, providing hearing protection in combination with other protective gear.

Additionally, products must be marked with the manufacturer’s name, standard number, CE marking, and other information related to proper use and safety. Special attention is given to different requirements for various working conditions and specific applications such as road work or railway transport.

Which personal protective equipment do you need to use?

When other means of reducing noise levels in the workplace cannot be used, employers must provide workers with personal hearing protection equipment, such as earmuffs, which we offer at Bultex99.

Choosing the right earmuffs requires careful consideration of various aspects related to noise levels and the nature of the sound in the work environment. Here is what should be taken into account:

• reduction level – determine the noise level and frequency to select earmuffs that effectively reduce levels below 80 dB;

• appropriate model – if you wear a protective helmet, choose those that can be mounted on it. For work in high-temperature conditions, opt for models with absorbing cushions;

• specific conditions – for noisy workplaces where communication is important, electronic communication system earmuffs are required;

• placement method – based on this criterion, there are two main types of earmuffs:

  • with external placement

These are the so-called external earmuffsthat cover the ear without being placed directly inside it. Suitable for various fields including construction, heavy industry, metallurgy, manufacturing, and the transport sector;

• with internal placement

Internal earmuffs are earplugs of various shapes made from different types of materials. There are varieties made of polyurethane foam, silicone, or other materials with good sound insulation properties.

The goal is to provide optimal protection without isolating the worker from the environment. Excessive protection can lead to reduced efficiency and safety.

Ensuring a safe and comfortable working environment through proper management of noise levels in the workplace is essential for the health and well-being of workers. Taking measures to reduce noise and providing personal protective equipment can prevent numerous health issues and create a more productive work atmosphere.

For more information and to purchase suitable protective equipment, visit our online store Bultex99.com.