The RD 286/2006 It is the reference standard in Spain for protecting workers from the risks arising from exposure to noise in the workplace. Approved on 10 March 2006 as the transposition of European Directive 2003/10/EC, this royal decree establishes exposure limit values, mandatory action levels, and preventive measures that must be adopted in any company where machinery, equipment, or processes generating significant sound levels exist.
For those responsible for occupational risk prevention and occupational risk prevention technicians in the industrial sector, compliance with this regulation is not optional. It involves carrying out periodic acoustic assessments, documenting the results through an occupational acoustic report, and, when levels require it, adopting technical noise control measures. In this article, we explain what RD 286/2006 mandates, when action is necessary, and how to approach it with technical assurance.
The Royal Decree 286/2006 establishes the minimum safety and health requirements for the use by workers of lifting equipment at work. It affects all workers who use lifting equipment, as well as employers and self-employed individuals who provide or use such equipment.
The Royal Decree 286/2006 regulates the protection of workers' health and safety against risks related to exposure to noise during the working day. It is applicable to virtually any industrial activity in which there are sound sources: mechanical manufacturing plants, machining workshops, food production plants, compression or ventilation facilities, packaging halls, pressing lines, or any environment where background noise could compromise workers' hearing health.
The norm obliges the Businessman to assess the risks arising from noise, to measure worker exposure in their workplaces, and to implement preventive and corrective measures when levels exceed established thresholds. It is not enough to provide hearing protection: regulations require a comprehensive approach that prioritises noise reduction at source before resorting to personal protective equipment.
Which types of industries are most exposed?
Although Royal Decree 286/2006 applies to all sectors, industrial facilities account for the majority of cases with significant noise exposure. Particularly critical are:
- Metallurgy and mechanical processing industryPresses, shears, lathes, milling machines, overhead cranes.
- Food and Drink Industry Packaging lines, bottling plants, refrigeration compressors.
- Chemical and pharmaceutical industryExtraction fans, mixers, mechanically stirred reactors.
- Paper, board and graphic arts industryRotary machines, guillotines, drying equipment.
- Power plants and utilitiesgenerator sets, air compressors, turbines.
- Construction and facilitiesConstruction machinery, compactors, drilling equipment.
In all these environments, acoustic assessment in industry is not a bureaucratic matter, but an essential tool for protecting workers' hearing health and making informed technical decisions.
Action levels and limit values: what the standard says
| Umbral | L_EX,8h | L_pico | Obligations |
|---|---|---|---|
| Lower exposure value leading to action | 80 dBA | 135 dBC | Risk assessment, worker information, audiometric surveillance available |
| Superior exposition value leading to action | 85 dB(A) | 137 dB | Mandatory technical measures programme, use of hearing protection, zone signage, mandatory audiometric surveillance |
| Exposure limit value | 87 dBA | 140 dBC | It cannot be overcome in any case, not even with hearing protection. |
This distinction is fundamental. Many companies assume that by providing earplugs or earmuffs they are compliant, but when exposure exceeds 85 dB(A), the standard additionally requires a technical measures programme focused on reducing noise at source. That's where solutions like the Industrial acoustic enclosure, machinery isolation or vibration damping teams.
When is it Mandatory to Measure Noise in a Factory?
This is one of the most frequently asked questions among industrial sector health and safety managers: When am I obliged to carry out acoustic measurements?
The answer is in Article 6 of Royal Decree 286/2006 itself: the employer must carry out an assessment of the risk of exposure to noise. whenever there are jobs in which any of the action values can reasonably be exceeded, that is to say, from 80 dB(A) daily exposure level or 135 dB(C) peak level.
In practice, this means that any company with relevant industrial machinery – production lines, compressors, high-power fans, machining equipment – must have performed a Noise assessment in industrial workplaces to document why it is not necessary.
Las mediciones deben actualizarse cuando:
- Changes may be made to the premises, equipment or methods of work which may alter exposure to noise.
- Health surveillance results indicate that hearing damage may have occurred.
- There are indications that the preventive measures taken are insufficient.
Ignoring this obligation not only exposes the company to sanctions from the Labour Inspectorate, but — more importantly — leaves workers unprotected against a risk that can cause irreversible occupational deafness.
Technical solutions to comply with Royal Decree 286/2006
When the acoustic assessment reveals that exposure levels exceed action values, the next step is to design and implement remedial measures. At TICE Group we develop Industrial acoustic solutions adapted for each installation, always prioritising noise reduction at source.
Industrial Acoustic Enclosures
The Industrial acoustic enclosure It is one of the most effective solutions when the noise source is localised and it is possible to physically isolate it from the rest of the plant. It consists of totally or partially enclosing the machine with high-density panels with internal absorbent material, incorporating the necessary openings for ventilation, access to controls and maintenance. A well-designed enclosure can reduce noise at the workstation by between 10 and 25 dB(A), which in many cases is sufficient to bring exposure below the lower action value.
Acoustic Screens and Barriers
In workplaces where the operator must maintain visual contact with the machinery, acoustic screens or partial enclosures allow for reduced direct exposure without completely enclosing the equipment. They are particularly useful on continuous production lines or with machinery that requires constant supervision.
Machinery Vibration Dampening
When noise has a significant component of structural transmission, the machine vibration damping It is the key intervention. It is realised through the interposition of elastomeric elements or steel springs between the machine and its support, the design of floating foundations, or the installation of flexible expansion joints in piping. Reducing vibration transmitted to the building's structure can have a very significant impact on the noise levels perceived in areas far from the source.
Acoustic Treatment of Enclosures
To know the details of our Industrial acoustic and anti-vibration solutions, including enclosures, screens and anti-vibration systems, consult our services area.
Benefits of Performing an Evaluation
- Real hearing health protection of workers, reducing the risk of occupational hearing loss – one of the most frequent occupational diseases in Spanish industry.
- Documented regulatory compliance, with the occupational acoustic report ready to be presented to the Labour Inspectorate or in any prevention audit process.
- Technical basis for investment decisions in corrective measures, with objective data on which machines generate more risk and in which jobs.
- Reduction of costs associated with occupational diseases and litigationCompanies that cannot prove they have assessed and controlled noise risk face avoidable surcharges on benefits and civil liabilities.
- Improving the work environment and productivityQuieter environments reduce stress, fatigue, and operational errors, with a positive impact on production quality.
Applicable Regulations
- RD 286/2006, of 10 March - On the protection of the health and safety of workers against the risks related to the effects of noise. It transposes Directive 2003/10/EC of the European Parliament and of the Council.
- Law 31/1995 on Prevention of Occupational Risks General framework of the employer's obligations regarding health and safety.
- RD 39/1997, Regulations on Prevention Services — Establish the risk assessment methodology and the criteria for preventive activity planning.
- INSST Technical Guide on RD 286/2006 — Guidance document from the National Institute for Health and Safety at Work with practical application criteria for the standard.
Failure to comply with Royal Decree 286/2006 may lead to economic sanctions classified as serious or very serious in the consolidated text of the Law on Infringements and Sanctions in the Social Order (LISOS), in addition to additional liabilities in the event of an declared occupational disease.
FAQs about RD 286/2006 and Industrial Acoustic Assessment
The obligation to measure noise arises as soon as there are workstations where the lower action value established by RD 286/2006 may reasonably be exceeded: 80 dB(A) equivalent daily exposure level or 135 dB(C) peak level. In practice, this affects most industrial facilities with production machinery, forced ventilation systems, compressors, or machining equipment.
The initial assessment must be carried out before workers are exposed to the risk, and must be updated whenever working conditions change, new machinery is introduced, or there are indications that actual exposure has varied. Failure to carry out the assessment when it is mandatory constitutes a serious infringement under LISOS.
