(3) Every foam installation of the gravity or continuous-generator type shall be provided with a system of distribution pipes so arranged as to enable the foam to be effectively distributed; provision shall be made to prevent the obstruction of the pipes or their outlets by water or otherwise, and to enable the efficiency of the pipes to be readily tested; pipes shall not be led through refrigerated spaces unless they are insulated and provision is made for draining them.
(3) Toute installation à mousse du type à gravité ou à générateur à fonctionnement continu aura un tuyautage de distribution disposé de manière à réaliser la bonne distribution de la mousse.
