According to the 2013 edition of NFPA 13, Installation of Sprinkler Systems, once the sprinkler has been removed, it cannot be reinstalled because it might have become damaged, says Matt Klaus in his column "Since U Been Gone" in the latest issue of NFPA Journal. However, the wording of this new requirement, simply says “when a sprinkler has been removed,” which has given rise to a number of different interpretations.
"The requirement generated a considerable amount of debate during the development of the 2013 edition of NFPA 13," says Klaus, "And I’m sure it will get a considerable amount of attention in the standard-development meetings for the 2016 edition." To see how the technical committee addresses this topic, you can monitor the NFPA 13 document information page at nfpa.org/13.
When the Technical Committee on Sprinkler Systems Installation Criteria discussed this concept last September, the discussion focused on situations when only the sprinkler itself was removed from the system.