Hi Doug:
In my opinion:
1. UL certifications for a particular equipment are good for the lifetime
of the equipment, and don’t need to be updated… unless...
2. If the equipment is refurbished or updated, UL has a program to update
the certification to the latest version of the original standard.
Stay safe, and best regards,
Rich
From: Douglas E Powell <doug...@gmail.com>
Sent: Thursday, May 6, 2021 12:16 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG
Subject: [PSES] UL Standards Effectivity Dates
Hello all,
I would like to understand the use of effectivity dates, specifically for UL
standards, when dealing with rather large leased equipment used in association
with an energy production facility. The plan is that an original manufacturer
will build, install, monitor, and maintain the equipment as a lease and not for
sale. The idea is that the equipment is put into service with the required
certifications of the day.
If at some later time, possibly a few years later, the equipment is taken out
of service, moved to a new location to be put into service once again (the
ownership has not changed) and if in that interim period the applicable product
standards have been revised, effectivity dates established, and the new edition
of the standard is mandatory for new products, is it necessary to re-certify
that equipment?
In my scenario that equipment may or may not involve refurbishing or updating
when it is relocated.
Thanks, Doug
--
Douglas E Powell
doug...@gmail.com <mailto:doug...@gmail.com>
http://www.linkedin.com/in/dougp01
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