The reason I asked this question is because a company I have been consulting with for the last 4 months, has this week successfully had their 80 kWh energy storage system reviewed and tested for a UL 9540 listing. This a startup company and they achieved first pass certification of their product. A limited production certificate was issued and now they are at the point where they will want to ramp up for factory certification. I was duly impressed and felt priveledged to be a part of the team. I also felt this was a very rare achievement and wanted to know the experience of others in this regard.
Doug On Fri, Jun 25, 2021, 8:12 PM Scott Xe <[email protected]> wrote: > Dear Doug, > > Very interesting question and I would like to know it as well. Suggest to > go to the testing lab for the answer. They should have the statistics in > their business. > > Would you mind sharing why you want to know it, what for? Although I do > not have the figures I am aware of the answers why the product cannot pass > the test in the first attempt. Below is my experience in dealing with > Asian suppliers in the past many years. > > - No safety engineer to go thru the design against the applicable > standards before submitted for testing. > - No proper facilities to conduct the pre-tests. > - The employer does not recognise the importance of this position and > results in no safety engineer in the manufacturer. The design engineer is > also not brave enough to tell the employer that they do not have knowledge, > experience and test facilities in doing the relevant test work so the > employer believes he/she looks after this as well. > - The design engineer does not have relevant knowledge and training > for the test work. There is little education system in current > universities/vocational institutes to help the society. Most test > engineers in public test labs are trained by the employers, not from the > current educational system. Some small associations (TIC - Testing, > Inspection & Certification) from the industry are setting up routes to be > certified testing professionals in the current educational system with the > help from the Government Industry Department. Just some improvement but > not sufficient IMO! > > Based on the above facts, it leads to other potential issues in the > finished products. Even if the product has passed the conformity test, the > manufacturer may not know why their design meets the requirements. How can > they maintain the compliance in production? If the manufacturer does not > have this knowledge, how can they plan their assurance protocol for mass > production in order to validate the finished products in compliance with > the original design limits before leaving the factory? > > Best regards, ☺ > > Scott > > On Sat, 26 Jun 2021 at 01:56, Douglas E Powell <[email protected]> wrote: > >> Out of curiosity, >> >> I would like to know (especially from those who have been in the business >> for a while) what is your "first pass success rate" for safety >> certifications on new product introductions? That is, to achieve a product >> safety certification from an accredited laboratory with no action items >> required coming out of the preliminary design review. It's helpful if you >> can indicate how complex the projects are. >> >> In my 26 years as a compliance engineer, I've observed possibly three in >> total for products with a reasonably high complexity. >> >> Thanks! Doug >> -- >> >> Douglas E Powell >> [email protected] >> http://www.linkedin.com/in/dougp01 >> >> - >> ---------------------------------------------------------------- >> >> This message is from the IEEE Product Safety Engineering Society emc-pstc >> discussion list. To post a message to the list, send your e-mail to < >> [email protected]> >> >> All emc-pstc postings are archived and searchable on the web at: >> http://www.ieee-pses.org/emc-pstc.html >> >> Attachments are not permitted but the IEEE PSES Online Communities site >> at http://product-compliance.oc.ieee.org/ can be used for graphics (in >> well-used formats), large files, etc. >> >> Website: http://www.ieee-pses.org/ >> Instructions: http://www.ieee-pses.org/list.html (including how to >> unsubscribe) <http://www.ieee-pses.org/list.html> >> List rules: http://www.ieee-pses.org/listrules.html >> >> For help, send mail to the list administrators: >> Scott Douglas <[email protected]> >> Mike Cantwell <[email protected]> >> >> For policy questions, send mail to: >> Jim Bacher <[email protected]> >> David Heald <[email protected]> >> > - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
