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Category: Safety

We have several robotic palletizing cells. Each cell has a variety of case sizes that are being brought into the cell by roller conveyor. Some of our cases are large so the openings through the perimeter fencing are large enough for a person to crawl through if they got onto the in-feed conveyor. According to ANSI/RIA R15.06 - 2012 is there a safety standard that dictates what level of safety we need to have at these in-feed openings?

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Hello, In R15.06-2012, it states that there is a maximum height a barrier can be above adjacent walking areas is 7". This is to ensure that no one can come in contact with the equipment inside. In applications where there could be large build ups of combustible dust or require routine cleaning of the area, is there a different height/ acceptable alternative to the 7"? Currently there is an installation which the eentire robot system is shutdown in order to clean the area due to the height of the guarding. This dramatically hinders production and could potentially cause employees to attempt to defeat the guarding to maintain the equipment. Thank you for your help

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To whom should we speak about the safety standards, certifications, performance tests, etc. for LiDAR?

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Regarding redeployment of an older robot into a new system the RIA R15.06 1999 standard is pretty clear stating that as long as the robot was to standard when it was manufactured, it does not need to be upgraded. The rest of the system needs to be to the most current standard. Unfortunately, the 2012 standard does not specify anything about redeployment as far as I can find. Is the 1999 standard still valid? Is this spelled out in another standard or TR? If so please advise where I may find it.

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If I'm not using any safety devices in my robot cell, what equation do I use for safety distance? I believe S = K*T + C is only for used with safety devices, due to the variables dealing with human interaction speeds. Is there a general equation for safety distance with regards to fencing and so maintenance personnel can't get pinned?

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Would a safety gate interlocked door with a pl=d category 3 interlock, that stops robot motion, allow operators to enter a robot cell without LOTO or an enabling device, provided that their work won't require interaction with the robot and the gate key was placed into a lock box with the operators lock placed on the box?

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ANSI/RIA R16.06-2012 5.3.15 says that when more than one person is required to be protected within the safeguarded space, that an enabling device shall be provided to each person. Does this mean that if only a singular person is entering the safe guarded space, they are not required to bring a teach pendant / enabling device into the cell with them?

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We have two robots that do pick and place points. We are looking at minimizing the 8' cage that surrounds the line, how can this be done safely?

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When did RIA or ANSI first implement the requirement for a Risk Assessment industrial robots in the US?

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Are there any "grandfather clauses" regarding robot guarding, integration, or risk assessment for industrial robots? If so, where is this information?

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What is the requirement about the main electrical disconnect not being located inside of the actual robot cell? Does it reference this specifically as a requirement in ANSI B11.0, or ISO 12100 - 2012, or RIA R15.06?

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How many people can be in the safeguarded space for each available teach pendant? Does everyone in the space need an enabling device?

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Our facility has recently purchased a collaborative robot. We are looking to do safety and risk assessment training. We are in Hazleton, Pennsylvania. The closest event to our facility is in Corning, New York on 11/1/18. My question is do you provide any onsite safety and risk assessment training, and if so, what is the cost to have a trainer come here. Robots are up and coming in many of our facilities, so we would want to provide training to everyone involved. I am hoping you can help us.

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We have an application with 3 Nachi MH robots in one gated area, with no operator interface (light curtain etc). I am very accustomed to performing safe distance calculations for the light curtain interface and the robot. However, in this particular system, there are 2 lanes where the robots work. They want to keep one lane running, while providing presence detection with safety scanners/light curtains, and 2 separate gates. (You enter one gate, it shuts down that lane only). We are accustomed to opening a gate and general stopping robots (time it takes to open a gate and then run into the cell). In this application, the Nachi has RMU with a safe speed option. Nachi is not providing me information on how a safe speed works regarding stop time. there are too many variables they say. How do i determine the distance I need to protect against someone who entered one side of the cell and the distance I need to provide the presence sensing device? I can provide a picture if that helps.

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We build custom robotic inspection and assembly machines. We have a project on the shop floor that has a 6 axis robot. The robot is guarded on 3 sides with a cabinet and a fence. The 4th side is open for operator loading/unloading and it has a safety light curtain. Our customer wants us to program the robot to stop motion when light curtain is broken and resume motion after light curtain is cleared and the operator presses a safe to resume switch 2 times. They do not want us to E-stop the robot in this situation forcing several steps to recover. The light curtain is wired through a safety relay and there are a few E-stop switches around this cell also. Is this robot stop and resume method something that would be considered acceptable to RIA standards?

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I am reviewing standards or information pertaining to stack lights and or indicator lights. Isn't there a requirement that there is an indicator light for when the light curtains are muted?

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If I have a material handling cell that the robot can reach higher than the 8' fence panel with a part, does this require then 12' fence panels? To prevent a possible thrown part from the EOAT? This has been a mater of debate for a long time for the actual height of the fence.

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When considering the robot as the hazard in a work cell, do you use the operating space or the restricted space to calculate safe distances to light curtains, fence, etc? 15.06 does not seem to differentiate.

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I have a question about the risk estimation methodology outlined in TR15.306. In Table 1 "Injury severity, exposure, and avoidance factors" it gives the guidance: "Choose most likely." This sounds to me like even if it is somewhat possible for a higher rating to apply, if a lower rating is significantly more likely to apply we should go with that one. For example, consider the risk of a large industrial robot striking an operator. Even moving at full speed, a reversible injury is much more likely than death/dismemberment. For this, I would select S2, but I was curious about how others are interpreting this table. Another example might be the situation where an operator is validating a program using a teach pendant. In this case, as long as reduced speed is applied and the operator is using the enabling device on the pendant, I would consider giving this an S1 rating. Yes, it is hypothetically possible for the operator to be crushed (S2 or S3) between the robot and the workpiece, but it is much, much more likely that an operator will drop/squeeze the enabling device before any significant injury occurs. A counterpoint to this would be the risk of reaching into a moving drive system. This would be S3 regardless, considering that should the person actually make contact with the drive system, it might have a high likelihood of drawing in and severing their hand. If this interpretation of the table isn’t correct, I would be very interested in learning how other people address these situations.

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We are installing an automated ultrasonic scanning system (5-axis) that only has one function - ultrasonic scanning. The definition of robot in R15.06 Is this considered to be an industrial robot? We were told not because it doesn't have a multipurpose manipulator - it just does ultrasonic scanning. Does R15.06 apply? Gary, 310-331-7191

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