UNE-EN 1366-5:2022

This document specifies a method for determining the fire resistance of horizontal service ducts andvertical service shafts, which pass through walls or floors and enclose pipes and cables. The test scenarioexamines the behaviour of ducts and shafts exposed to fire either from outside or inside the system. Thisdocument is intended to be read in conjunction with EN 1363-1:2012.This document does not examine the risk of fire spread as a result of thermal conduction along the pipingor cabling installed in service ducts or shafts or thermal conduction through the media these pipes carry.It does not cover the risk of damage produced by thermal elongation or shortening of tubes and cables asa result of fire or damaged pipe suspensions. This document does not give guidance on how to test one,two or three sided service ducts or shafts.NOTE Guidance on testing service ducts and shafts of less than four sides will be covered in the extended fieldof application rules being developed by CEN/TC 127.This test applies to systems with boards and also for such systems with continuous covering withintumescent materials on the boards. It cannot be applied to systems where intumescent material is onlyapplied in the range of the penetration.This test is unsuitable for evaluating service ducts or shafts with internal barriers at walls and floors.This test is unsuitable for evaluating fire protective systems for cable systems and associated componentswith maintenance of integrity in case of fire. This is covered by EN 1366-11: Fire protective systems forcable systems and associated components.Whilst the walls of service ducts or shafts tested to this method provides specified levels of integrity orinsulation, testing according this document does not replace the testing of the functional endurance ofsmall electrical cables which is covered in EN 50200.Fire resistance testing of ducts for air distribution systems is covered in EN 1366-1.