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:[email protected]] Sent: Tuesday, October 16, 2018 3:33 PM To: Chester Summers <[email protected]> Cc: IEEE EMC PSTC <[email protected]> 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 [email protected]<mailto:[email protected]> +1 (519) 729-5704 On 16-Oct-18, at 16:17, Chester Summers <[email protected]<mailto:[email protected]>> 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:[email protected]] Sent: Tuesday, October 16, 2018 1:38 PM To: Chester Summers <[email protected]<mailto:[email protected]>> Cc: IEEE EMC PSTC <[email protected]<mailto:[email protected]>> 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 [email protected]<mailto:[email protected]> +1 (519) 729-5704 On 16-Oct-18, at 12:03, Chester Summers <[email protected]<mailto:[email protected]>> 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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