ISO 15370-2021 pdf free download – Ships and marine technology — Low-location lighting (LLL) on passenger ships — Arrangement.
4.1.3 The LLL system consists of the following components: the guidance lines at low-location, themarking of exit doors, and the signs at low-location relevantto escape routes and fire-fighting equipment.
4.1.4 For EP systems, the colour of the line sources or point sources of light shall be green,white or yellow.
4.1.5 Escape route signs shall be placed adjacent to, or integrated in, the low-location guidance lines.
4.1.6 LLL guidance lines shall be as continuous as practicable in order to provide a visible delineationof the escape routes.Interruption of the LLL system due to constructional practicalities such as corridors,doors,small protrusions, as well as to the ship’s plants and systems (ducts, cables, pipes, etc.), fixedfurniture or artworks shall be permitted provided that they neither exceed 2 m in length nor impair thevisible delineation of the escape route.
4.1.7The LLL system shall function continuously for at least 60 min after its activation.
4.1.8 LLL products shall not contain radioactive materials unless such materials are designated “sealedradioactive materials” and are tested in accordance with IS0 2919.Materials containing radionuclides asgiven in ISO 2919:2012,Annex A, are considered sealed radioactive materials that should be tested inaccordance with Iso 2919.
4.2Phosphorescent systems
4.2.1 Phosphorescent (PL) materials shall provide a luminance of at least 15 mcd/m2measured10 min after the removal of all external illuminating sources. The system shall continue to provide
luminance values greater than 2 mcd/m2 for 60 min. The luminance shall be measured at the surface ofthe materials.
4.2.2 For excitation from an 8 w tubular fluorescent lamp of standard F2 cool white with a colourtemperature of 4 100 °K, Annex A specifies the method of test for determining the minimum illuminance,measured at the surface of the phosphorescent material,which would enable the phosphorescentmaterial to meet the minimum luminanice requirements at 10 min and 60 min.For a different excitationlamp and luminaire, the test procedure of Annex A can be used to determine the minimum illuminancefor the particular lamp and luminaire.
4.2.3 PL guidance lines shall have a width of 75 mm or greater. PL guidance lines having a width lessthan 75 mm shall only be used if the luminance is increased to compensate for the reduced width inaccordance with Annex D.
4.2.4 Escape route signs shall have minimum height of 50 mm or the width of guidance line if greater,and be made of phosphorescent material, and use graphical symbols in accordance with Iso 24409-1and ISO 24409-2.
A supplementary direction arrow graphical symbol cannot be used on its own; it shall be in combinationwith a safety sign (e.g. exit, lifeboat, assembly station, as given in ISO 24409-2).
4.2.5 PL materials shall be flame-retardant in accordance with ISo 3795 with the contact of 38 mmflame for 15 s and classified as F1.
4.2.6 Annex A specifies testing methods on phosphorescent low-location lighting materials.
4.3 Electrically powered systems 4.3.1 Electrically powered systems shall be connected to the emergency switchboard as required by Regulation II-1/42 of SOLAS 74, as amended, so as to be powered by the main source of electrical power under normal circumstances and also by the emergency source(s) of electrical power (as identified by Regulation II-1/42.3) when the latter is in operation. Alternatively, for passenger ships carrying more than 36 passengers and built before 1994-10-01, EP systems may be connected to the main lighting system so that independent batteries provide a backup of at least 60 min and are charged from the main lighting system. 4.3.2 The components of EP LLL systems can consist of planar light sources or point light sources or a combination of both.ISO 15370 pdf download.