Risk Assessment - Universal Robots UR5 User Manual

1.4. Risk assessment

2. ISO 10218-1:2011 "Robots and robotic devices - Safety requirements for in-
dustrial robots - Part 1: Robot"
3. ISO 10218-2:2011 "Robots and robotic devices - Safety requirements for in-
dustrial robots - Part 2: Robot systems and integration"
Note that these standards describe what is normally done to sufficiently re-
duce hazards. For hazardous and complex robot installations it is recommended
to follow the relevant guidelines of R15.06-2012.
The integrator is always responsible for the following:
1. Making a risk assessment of the complete robot installation.
2. Installing a lockout/tagout function for the complete robot installation.
3. Writing a user manual for the customer and/or operators.
4. Providing a warning for any foreseeable (imaginable) dangers.
5. Installing the robot in accordance with the recommendations of the man-
ufacturer.
6. Knowing and applying all relevant national and regional requirements.
1.4 Risk assessment
One of the most important things that an integrator needs to do is to conduct
a risk assessment. A risk assessment is explained as below.
1. A risk assessment is:
The overall process comprising a risk analysis and a risk evaluation.
2. A risk analysis is:
The combination of the specification of the limits of the machine, hazards
identification and defining likely severity of harm and probability of it oc-
currence. This includes foreseeable misuse.
3. A risk evaluation is:
The judgment, on the basis of risk analysis, of whether the risk reduction
objectives have been achieved.
More guidance on risk assessment is found in the international standard ISO
12100:2010 and at http://www.osha.gov. The risk assessment shall be docu-
mented for future reference.
Universal Robots has identified the potential significant hazards listed below as
hazards which shall be considered by the integrator. Note that other significant
hazards might be present in a specific robot installation.
1. Fingers caught between robot mounting flange and base (joint 0).
2. Fingers caught between the robot arm and robot wrist (joint 4).
3. Penetration of skin by sharp edges and sharp points on tool or tool con-
nector.
4. Penetration of skin by sharp edges and sharp points on obstacles near the
robot track.
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