Machine knowledge about Norma Regulamentadora 12

2024-03-29

How to design the machine with NR 12 (Norma Regulamentadora 12)?

Designing a machine in compliance with NR 12 (Norma Regulamentadora 12) involves several steps and considerations to ensure the safety of workers who will operate, maintain, or come into contact with the equipment. Here's a general guideline on how to design a machine with NR 12 in mind:

Risk Assessment:

Conduct a thorough risk assessment of the machine to identify potential mechanical hazards, such as crushing, cutting, shearing, and entanglement. Consider all stages of the machine's lifecycle, including installation, operation, maintenance, and decommissioning.

Compliance with Standards:

Ensure that the machine design complies with the requirements specified in NR 12 and other relevant Brazilian standards related to machinery safety. This may include standards issued by organizations such as ABNT (Associação Brasileira de Normas Técnicas) and international standards such as ISO 12100.

Guarding and Protective Devices: 

Design the machine with appropriate guards, protective devices, and safety features to prevent access to hazardous areas and minimize the risk of injury. Use barriers, enclosures, interlocks, presence-sensing devices, and other safety measures as required by NR 12.

Emergency Stop System: 

Incorporate an emergency stop system into the machine design to quickly shut down operations in case of an emergency or hazardous situation. Ensure that the emergency stop controls are easily accessible and clearly marked.

Ergonomics and Access: 

Design the machine to facilitate safe and ergonomic operation, maintenance, and servicing. Consider factors such as reach distances, visibility, clearance zones, and ergonomic design principles to minimize the risk of musculoskeletal disorders and fatigue.

Controls and Interfaces: 

Design intuitive and user-friendly control interfaces for the machine, with clearly labeled controls, indicators, and instructions. Ensure that controls are located in safe positions and designed to prevent accidental activation or unintended operation.

Safe Work Procedures: 

Provide comprehensive instructions, warnings, and training materials for operators and maintenance personnel covering safe use, maintenance procedures, and emergency protocols related to machine safety. Ensure that all relevant personnel receive proper training and understand their responsibilities.

Documentation and Markings: 

Develop clear and concise documentation for the machine, including operation manuals, maintenance procedures, warning signs, symbols, and instructional labels. Ensure that all markings are durable, legible, and prominently displayed on the machine.

Maintenance and Inspections: 

Design the machine to facilitate easy maintenance and regular inspections of mechanical components, safety features, and control systems. Establish a maintenance schedule and procedures to ensure that the machine remains in safe working condition.

Continual Improvement: 

Continuously monitor and evaluate the machine's performance and safety features, and implement any necessary improvements or modifications to enhance safety over time.

By following these guidelines and integrating machinery safety principles into the machine design process, you can help ensure compliance with NR 12 and create a safer working environment for operators and maintenance personnel. It's also advisable to consult with safety experts, engineers, and legal professionals to ensure full compliance with regulatory requirements.