There is no single safety setup required for every industrial robot. Safeguards should be selected after assessing the complete application—including the robot, tooling, workpiece, process, cell layout, operating modes, and the tasks people perform. Depending on the risks, controls may include guarding and interlocks, protective sensing devices, safety-related control functions, safe access procedures, and worker training. Exact requirements depend on the installation and jurisdiction.
What rules and standards apply?
Requirements depend on where the cell is installed and how it is used. OSHA says that it has no robotics-specific standards; that does not exempt employers from other applicable workplace standards or duties. OSHA’s Technical Manual points employers to relevant general-industry or construction requirements and treats consensus standards as guidance, not as OSHA regulations. Its older references should be checked against current editions.
The international robot-safety series was revised in 2025: ISO 10218-1:2025 covers the industrial robot as a machine, while ISO 10218-2:2025 addresses applications, integration, and robot cells. ISO lists Part 1, its third edition, as published on February 5, 2025. ANSI/A3 R15.06-2025 adopts those two ISO parts for the United States and replaces the 2012 R15.06 edition. Standards adoption and legal duties are distinct; in Europe, harmonized machinery standards have a role in the applicable framework, but a catalog listing alone does not determine an employer’s obligations.
For U.S. context, OSHA’s “Robotics – Overview,” “Guidelines for Robotics Safety” directive, and Technical Manual discuss the agency’s approach and hazard analysis. EU-OSHA’s OSHwiki explains the European context. For engineering or conformity work, verify requirements against the official current standards and the rules applicable to the specific site; the full ISO 10218-2:2025 text reviewed for this article was available through a preview mirror.
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How to assess the robot application
OSHA’s robotics directive says that selecting an effective safety system should be based on hazard analysis of the operation involving the particular robot. The assessment needs to cover the cell and work, not just the robot arm.
- Define the system and who may be exposed. Include the robot, end-effector, workpiece, task program, auxiliary equipment, nearby machinery, obstacles, and safeguards. Consider operators, programmers, maintenance workers, integrators, and anyone else who can approach the cell.
- List every operating mode and task. Cover automatic production as well as startup, teaching or programming, setup, testing, adjustment, fault clearing, maintenance, repair, and foreseeable corrective work. OSHA notes that accidents often occur during non-routine work, when a person may be inside the robot’s working envelope.
- Identify hazards and foreseeable failures. Consider the task, startup and programming, environmental conditions, location, corrective work, human error, and possible robot malfunctions. Assess process hazards too: welding, machining, painting, sharp tooling, hot surfaces, dropped loads, and neighboring equipment can introduce risks independent of robot motion.
- Choose controls for the identified risks. Combine safeguards and work practices as appropriate. A robot label, a single protective device, or a setting that has not been assessed as a safety function does not establish that the whole application is safe.
- Verify the integrated cell before use. Review installation and testing, safe work areas, manufacturer requirements, and task-based procedures before commissioning. Involve users and workers, and reassess when the robot, tool, task, layout, or operating mode changes meaningfully.
Which safeguards may be needed?
The risk assessment determines the combination. These are control categories, not a universal checklist that every cell must implement in the same way.
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- Standard type
| Safeguard | What it can address | What to assess |
|---|---|---|
| Perimeter guards and interlocked access | Restricting entry to the safeguarded space and stopping or preventing hazardous operation when an access guard is opened, where the design and assessment call for it. | All access routes, the safeguarded space, how an interlock affects hazardous operation, and whether people can reach around, over, or under the guard. |
| Sensitive protective equipment | Detecting access or presence in suitable applications. A light curtain is one possible type. | Coverage of access paths, reach-over and reach-under possibilities, robot stopping behavior, and other process hazards. A light curtain is not suitable for every cell and does not automatically control every hazard. |
| Safety-related control functions and limiting devices | Controlling risk through safety functions or appropriately assessed limits on motion. | The required safety performance, the complete safety-related control system, and validation of the integrated application. Do not rely on an ordinary software setting as a safety function unless it has been assessed accordingly. |
| End-effector and process controls | Addressing hazards from grippers, welding guns, spray guns, exchanged tools, the workpiece, and the process. | Tool changes, pinch or impact hazards, sharp or hot parts, and the way process equipment interacts with robot motion and cell access. |
| Access and work procedures | Managing entry, making equipment safe, teaching, maintenance, fault clearing, and safe restart. | Whether procedures match the actual controls and operating modes, applicable energy-control rules, and the work people really perform. There is no single lockout procedure appropriate to every machine. |
When choosing among controls, compare which hazards and tasks each addresses; whether it prevents access or detects presence; stopping time and achievable separation; coverage of all access paths; effects on visibility and workflow; validation needs; and maintenance, bypass, and training risks. A qualified integrator or safety professional should assess the actual cell, stopping performance, detection coverage, and safety-system integration.
Do collaborative robots need safeguards?
Yes. “Collaborative” describes an application or task, not a blanket exemption from safeguarding. A collaborative application still needs a risk assessment that considers the robot, end-effector, workpiece, speed, likely contact scenarios, and the human task together.
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Collaborative safety functions may be built into a robot, provided by a protective device, or achieved through a combination. Power-and-force-limiting applications require risk-based consideration of force, power, and ergonomic parameters; the robot’s collaborative designation alone does not establish safe conditions for every tool or task. If a cell can switch between autonomous and collaborative operation, control of the mode change is safety-critical and should be managed through the control system and risk assessment. Protective devices or other safeguards may still be necessary.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What should be in place for non-routine work?
Plan explicitly for work that takes people into or near the robot’s working envelope, especially teaching, testing, setup, adjustment, fault recovery, and maintenance. Staff need a defined way to enter the cell, make the system safe for the task, perform the work, and confirm safe restart. Training should cover the actual equipment, control modes, hazards, and procedures—not just general robot awareness. The appropriate energy-control and restart arrangements depend on the machinery and applicable rules.
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