Hi, Chet. I don’t know if you’re planning to use UL for as an NRTL, but I found the following.
I searched UL’s on-line certifications data base on the keyword conveyor. That led to several pages of certifications under a few product categories. The best match (in concept) was UL’s product category for Conveyors. Unfortunately, the UL Guide Card for this product category explicitly states that it only covers equipment for use “within a building structure.“ While UL 73 does contain outdoor equipment requirements, this one product category that uses UL 73 doesn’t allow certifications for outdoor use. If you are planning to use UL, they can be convinced to create an outdoor conveyor category, since UL 73 does include outdoor equipment requirements. This process takes some time to accomplish and might not be completed before you’re ready to ship safety certified product. Another option could be to use Outline of Investigation for Factory Automation Equipment, UL Subject 2011. Even though this Outline doesn’t explicitly include outdoor equipment requirements, it might fit the bill. (2011 does reference other standards that do have outdoor equipment requirements, so it’s a short leap to including the in the certification.) The product category for Factory Automation Equipment doesn’t limit the applications to indoor use. Subject 2011 is used in conjunction with NFPA 79. Regards, Peter Tarver From: Chester Summers <csummers@CHARLESMACHINE.WORKS> Sent: Wednesday, October 17, 2018 10:21 To: EMC-PSTC@LISTSERV.IEEE.ORG Subject: Re: [PSES] safety standards--outdoor electric machine Hi, Doug— Many thanks for the advice, and for the conveyor pub. The guarding figures and accompanying rationale are really well done. I’m quickly learning that conveyor systems in general are rather complex beasties concerning machinery safety! Best regards, Chet Summers From: Doug Nix [mailto:d...@ieee.org] Sent: Tuesday, October 16, 2018 3:33 PM To: Chester Summers <csummers@charlesmachine.works> Cc: IEEE EMC PSTC <EMC-PSTC@LISTSERV.IEEE.ORG> Subject: Re: [PSES] safety standards--outdoor electric machine Hi Chet, I don’t have any opinion as to UL 73, as I am not familiar with that standard, sorry. I just wanted to be sure that the mechanical safety aspects were not forgotten. There are some excellent ISO standards that you might also find useful, although they are aimed at a broader audience than “just” North America. Also, you might be interested in this conveyor safety guide produced by IRRST. Excellent stuff. English translation by the WSPS in Ontario, Canada. http://www.wsps.ca/WSPS/media/Site/Resources/Downloads/User-Guide-to-Conveyor-Belt-Safety.pdf?ext=.pdf<https://urldefense.proofpoint.com/v2/url?u=http-3A__www.wsps.ca_WSPS_media_Site_Resources_Downloads_User-2DGuide-2Dto-2DConveyor-2DBelt-2DSafety.pdf-3Fext-3D.pdf&d=DwMFaQ&c=G4BpsyPyB19LB50bn2swXw&r=uQYjlohUH2VwYVcMCZDVOGnwYsWulCG18FqsT19OrFM&m=qiO7vCqkqfqyrswfWbdP_Woleau_Kx7MzcsBnV9ATfA&s=lZnAWhZ9fabUkSRTfny5W2SH-wzNSQhsEJ5TdyadxWk&e=> Doug Nix d...@ieee.org<mailto:d...@ieee.org> +1 (519) 729-5704 On 16-Oct-18, at 16:17, Chester Summers <csummers@CHARLESMACHINE.WORKS<mailto:csummers@CHARLESMACHINE.WORKS>> wrote: Hi, Doug— Yes, ASME B20.1 applies and certain aspects of it were included in the initial risk assessment. What’s your opinion as far as UL-73 is concerned? Chet From: Doug Nix [mailto:d...@ieee.org] Sent: Tuesday, October 16, 2018 1:38 PM To: Chester Summers <csummers@charlesmachine.works<mailto:csummers@charlesmachine.works>> Cc: IEEE EMC PSTC <EMC-PSTC@LISTSERV.IEEE.ORG<mailto:EMC-PSTC@LISTSERV.IEEE.ORG>> Subject: Re: [PSES] safety standards--outdoor electric machine Hi Chester, Don’t forget that this kind of equipment should conform to ASME B20.1, Safety Standard for Conveyors and Related Equipment. Doug Nix d...@ieee.org<mailto:d...@ieee.org> +1 (519) 729-5704 On 16-Oct-18, at 12:03, Chester Summers <csummers@CHARLESMACHINE.WORKS<mailto:csummers@CHARLESMACHINE.WORKS>> wrote: Hello, listmates— I’m scoping North American electrical safety standards for an a.c. mains powered, portable conveyor system to support an outdoor construction process. Used to assist in handling pipe lining fabric at the jobsite. The motor will likely be no greater than ¾ HP single phase, 120Vac/60Hz. VFD motor speed controller to manage the short conveyor belt (approximately 6ft long). There are no product specific standards for this type of equipment, however UL-73 for Motor Operated Appliances appears to check all the appropriate electrical safety boxes. Conveyor-specific safety will be addressed with ASME B20.1. I welcome expert opinions from the group—is UL-73 sufficient to evaluate this product? Many thanks in advance, Chet Summers This email and any files transmitted with it from Charles Machine Works are confidential and intended solely for the use of the individual or entity to which they are addressed. - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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