NR-12 Machinery Safety — Risk Assessment and Compliance in Brazil
NR-12 is Brazil's machinery safety standard. Non-compliant equipment exposes companies to fines, interdictions and labour liability. ES Engenharia delivers full NR-12 projects: preliminary risk assessment (APR), electromechanical guarding design, physical installations and MTE follow-up.
NR-12 in Brazil — what manufacturers, importers and users must know
NR-12 (Norma Regulamentadora 12) covers machinery and equipment safety. It applies to manufacturers, importers and users of any machine in Brazilian territory. Compliance requires a documented Preliminary Risk Assessment (APR), physical guarding installations, interlocked safety devices, two-hand controls on relevant machines, and detailed technical documentation.
ES Engenharia has specialised in NR-12 compliance since the standard's major revision (2010). Our team performs projects for hydraulic presses, guillotines, bending machines, lathes, injection moulding machines, saws and custom production lines. We cover the full project lifecycle from risk assessment through physical installation, final report and ART registration.
Our engineers hold CMSE (Certified Machinery Safety Expert) certification — the international benchmark for machinery safety professionals. Every NR-12 dossier we produce is legally signed with ART at CREA-ES, providing full technical and legal coverage in Ministry of Labour inspections.
NR-12 compliance project scope
- Preliminary Risk Assessment (APR) with severity × probability matrix per ABNT NBR ISO 12100
- Electromechanical design: guards, light curtains, two-hand controls, emergency stops
- Safety relay / safety PLC specification and wiring (Category 3, PLd — ISO 13849)
- Physical installation of guards and interlock devices
- Machine inventory and NR-12 compliance gap analysis
- Safety distance calculation per ABNT NBR ISO 13857
- Operator training documentation and sign-off records
- MTE follow-up during Ministry of Labour inspections
- Technical conformity report with ART CREA-ES
Machinery types we cover
Hydraulic Presses
Two-hand controls, light curtains, interlocked guards
Guillotines
Fixed and movable guards, blade interlock, emergency stops
Bending Machines (Dobradeiras)
Laser safety systems, guards, safety PLC
Lathes and Milling Machines
Enclosures, chuck guards, emergency stops
Injection Moulding Machines
Mould area guards, two-hand controls, interlocks
Calenders
Nip guards, emergency stop bars, safety relays
Conveyors
Perimeter guarding, pull-cord emergency stops, speed monitoring
Custom Production Lines
Full risk assessment and bespoke guarding design
Key standards and regulatory references
- NR-12 — Brazilian machinery and equipment safety standard (MTE)
- ABNT NBR ISO 12100 — risk assessment and risk reduction for machinery
- ABNT NBR ISO 13849 — safety of machinery: safety-related parts of control systems (PLr)
- ABNT NBR ISO 13857 — safety distances to prevent reach to hazard zones
- IEC 62061 — safety of machinery: functional safety of SCS (SIL)
- NR-28 — administrative fines for non-compliance with NRs
- Law 6,514/1977 — occupational safety and health (legal basis for NRs)
Frequently asked questions about NR-12 compliance
What is NR-12 and when is compliance mandatory? +
NR-12 (Norma Regulamentadora 12) establishes minimum safety requirements for the design, installation, operation and maintenance of machinery and equipment. Compliance is mandatory for all companies operating machinery in Brazil, regardless of size. Machines acquired after 2012 must already leave the factory in compliance. Earlier equipment must be brought into compliance according to a schedule defined by the employer.
What is a Preliminary Risk Assessment (APR) under NR-12? +
A Preliminary Risk Assessment (APR) is the technical process of identifying hazards and estimating and evaluating the risks associated with each machine or piece of equipment. It is the starting point of the NR-12 compliance project: without a documented APR, the company cannot issue a conformity report. The process follows ABNT NBR ISO 12100 and results in a technical report with ART.
What is the difference between hazard identification and risk assessment? +
Hazard identification detects and estimates the risks present in a machine. Risk assessment goes further: it evaluates each identified risk to decide whether it is acceptable or requires a risk reduction measure. NR-12 requires a full risk appraisal (apreciação de risco), which encompasses both analysis and evaluation per ABNT NBR ISO 12100.
Who can sign an NR-12 compliance report? +
The NR-12 technical conformity report must be signed by a legally qualified professional: a mechanical, electrical or safety engineer with an active registration at CREA and a registered ART (Technical Responsibility Annotation). For complex machines, the professional should hold specific qualification in machinery safety — preferably CMSE (Certified Machinery Safety Expert) certification.
How much does NR-12 compliance cost? +
The cost varies according to the number of machines, the complexity of identified risks and the scope of physical interventions required (installation of guards, safety relays, emergency stop systems). ES Engenharia prepares a detailed technical proposal after a free site visit. Contact us via WhatsApp at (27) 9.9798-8642.
Can a company be fined without an NR-12 compliance report? +
Yes. The Ministry of Labour's inspection body (MTE) can fine companies with machines not compliant with NR-12, applying penalties based on NR-28. In addition to administrative fines, in the event of an accident with a non-compliant machine, the company faces civil and criminal liability. There is no single legal deadline for compliance — the employer must establish a schedule and fulfil it.
Which machines are covered by NR-12? +
NR-12 applies to virtually all machinery used in Brazilian workplaces: hydraulic and mechanical presses, guillotines, bending machines (dobradeiras), lathes, milling machines, injection moulding machines, calenders, saws, conveyors, elevators and custom production lines. Each machine type has specific requirements for guarding type, safety distance (ABNT NBR ISO 13857) and performance level (PLr, ISO 13849).
What documents are required for NR-12 compliance? +
A complete NR-12 dossier includes: (1) ART of the responsible engineer; (2) documented Preliminary Risk Assessment (APR) per ABNT NBR ISO 12100; (3) electromechanical guarding project with technical drawings; (4) safety performance level justification (PL, ISO 13849); (5) machine operating and maintenance manuals; (6) operator training records; (7) final conformity report signed by the engineer with ART.
18 years delivering machinery safety projects in the metalworking, food, plastics and chemical industries across Brazil. CMSE-certified engineers · CREA-ES · ART.
Organismo certificador oficial
Engenheiro CMSE® — a maior certificação em segurança de máquinas do mundo.
O CMSE® (Certified Machinery Safety Expert), concedido pelo TÜV NORD — organismo certificador alemão de referência mundial — é a credencial mais exigente e reconhecida em segurança de máquinas. É exigida como requisito de qualificação técnica por empresas como Vale, Samarco e Petrobras em contratos de adequação NR-12.
O Engº Enio C. Soeiro, CMSE®, responsável técnico da ES Engenharia, integra o seleto grupo de engenheiros certificados pelo TÜV NORD no Brasil — garantindo laudos e apreciações de riscos com o mais alto nível de exigência técnica internacional.
Verificar perfil — Enio Soeiro, CMSE®
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