BS 8663-1:2019 pdf free.Fixed fire protection systems -Components for watermist systems. 4.7.1 For automatic nozzles, when tested in accordance with Annex D (D.1), the watermist nozzle shall open and within 5 s of release of the thermally sensitive element shall operate as intended. Any lodgement of released parts shall be cleared within 60 s of the release of the thermally...
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