NFPA 25: 220.127.116.11.3 calls for testing f/r heads on a 20 year schedule. Has anyone begun this testing, and if so, can you share the experience? This requirement will affect virtually every building built in the last 25 years: residential, data centers, offices, warehouses, all have better protection because of F/R heads. Testing them all will be quite a challenge?
Have the manufacturers had any opinion on this matter?
Many thanks to everyone,