Now we are doing a fire sprinkler system modification job.We replace the existing sprinkler line . As per NFPA standard the existing sprinkler head is re usable or not.
You may not reuse sprinkler heads removed from an existing system. Per NFPA 13, 2016 edition, section 188.8.131.52, "Reconditioned sprinklers shall not be permitted to be utilized on any new or existing system".
This means that a sprinkler removed from an existing system (that is, reconditioned) may not be reinstalled in a new or existing system. The reasoning behind this is that the sprinkler threads or actuating device could have been damaged during removal, and may leak (lost time and money or property damage) or may not open during a fire (increased property loss).
Not so sure on dry pipe barrels??
it is wet riser.
The best rule of thumb. Always plan on replacing existing sprinklers whenever sprinkler head or sprinkler head with the drop/bushing is removed. This keeps me out of trouble. Dry Pendants are to be sampled and tested every 10 years. FYI
NFPA 13, 2013 ed.
6.2 Sprinklers.6.2.1 General. Only new sprinklers shall be installed.184.108.40.206 When a sprinkler has been removed for any reason, itshall not be reinstalled.
I thought I had saw something recently
NFPA Journal - In Compliance NFPA 13, July August 2016
Really study your books and know your standards. Doing so will really further your career in the industry.
OTHERWISE SHALL WE REMOVE A SPRINKLER WITH REDUCER AND USE IT ?
This is wrong, but it is known that in such a way this rule is often omitted
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