EN 1366-1:2014

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Preskusi požarne odpornosti servisnih inštalacij - 1. del: Ventilacijski kanaliFeuerwiderstandsprüfungen für Installationen - Teil 1: LüftungsleitungenEssais de résistance au feu des installations techniques - Partie 1: Conduits de ventilationFire resistance tests for service installations - Part 1: Ventilation ducts91.060.40Dimniki, jaški, kanaliChimneys, shafts, ducts13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:Ta slovenski standard je istoveten z:EN 1366-1:2014SIST EN 1366-1:2014en,fr,de01-december-2014SIST EN 1366-1:2014SLOVENSKI
STANDARDSIST EN 1366-1:19991DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1366-1
October 2014 ICS 13.220.50 Supersedes EN 1366-1:1999English Version
Fire resistance tests for service installations - Part 1: Ventilation ducts
Essais de résistance au feu des installations techniques - Partie 1: Conduits de ventilation
Feuerwiderstandsprüfungen für Installationen - Teil 1: Lüftungsleitungen This European Standard was approved by CEN on 13 June 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
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duct used for the distribution or extraction of air and designed to provide a degree of fire resistance 3.2 combustible lining lining / coating on the inner surface of the duct; reaction to fire classification of the lining material (tested in end use condition, treated as an external, non-substantial component) worse than class A2-s1,d0 according to EN 13501-1 3.3 self-supporting duct duct constructed e.g. from fire-protective boards without encasing a steel duct 3.4 suspension devices components used for suspending and fixing a duct from a floor or supporting a duct from a wall 3.5 supporting construction wall, partition or floor which the duct passes through in the test 3.6 compensator device used to prevent damage from the forces generated by expansion 3.7 access panel cover for an inspection opening within the duct 3.8 fire protected steel duct steel duct with an external insulation to provide fire resistance 4 Test equipment 4.1 General In addition to the test equipment specified in EN 1363-1 the following is required: 4.2 Furnace This shall be capable of subjecting ventilation ducts to the standard heating and pressure conditions specified in EN 1363-1 and be suitable for testing ducts in the vertical (see Figure 1) or horizontal (see Figure 2) orientation. SIST EN 1366-1:2014

EN 1366-8. In this case, fan A shall be adjusted to (500 ± 15) Pa for testing duct a according to this standard. 4.4 Fan for duct B This shall be able to produce an air velocity when extracting gas from duct B (see Figure 5), of at least 3m/s measured at ambient temperature in the duct before the test. It shall be connected either directly, or by a suitable length of flexible ducting, to the air velocity measuring station described in 4.8. The fan shall be provided with a by-pass vent that can be opened prior to the damper described in 4.7 being shut. 4.5 Volume flow measuring station This shall consist of a venturi, orifice plate, or other suitable device and (where necessary) an airflow straightener, installed in straight lengths of pipe, all sized to EN ISO 5167-1, EN ISO 5167-2 and EN ISO 5167-3. It shall be connected to the end of the condensing unit to determine the volume flow rate of gas passing through duct A during the test. The measuring device shall be capable of measuring to an accuracy of ± 5 %. Regardless of whether vertical or horizontal ducts are being tested, the volume flow measuring station shall always be used in a horizontal orientation. 4.6 Condensing unit This shall be installed between the end of duct A and the flow-measuring device and shall allow for sufficient drainage. The gas temperature adjacent to the flow-measuring device shall be measured by sheathed thermocouple, type K according to EN 60584-1, max. 2 mm in diameter, with an insulated hot junction, arranged pointing upwards to allow for draining moisture. Its measuring junction shall be located at the centre line of the measuring tube and at a distance equal to twice the diameter of the measuring tube downstream from the flow-measuring device. The temperature measured by this thermocouple shall not exceed 40 °C. 4.7 Damper This shall be installed between the fan and the air velocity measuring station to shut off the airflow in duct B during evaluation of integrity in the "fan-off" condition. 4.8 Air velocity measuring station This shall determine air velocity in duct B and shall consist of one or two inlet nozzle(s), or other suitable device, installed in a straight length of pipe sized to EN ISO 5167-1, EN ISO 5167-2 and EN ISO 5167-3, connected to the end of both the vertical and horizontal duct B outside the furnace. The temperature of the extracted hot gas shall be measured with a sheathed thermocouple type K according to EN 60584-1, max. 2 mm in diameter, with an insulated hot junction, arranged pointing upwards to allow for draining moisture. Its measuring junction shall be located at the centre line of the pipe and at a maximum distance of 100 mm downstream from the flange. If larger distance is necessary, the pipe between flange and measuring point shall be insulated. 4.9 Equipment for measuring gas pressure This shall be provided in the laboratory, in the furnace and inside duct A. The measuring equipment for measuring pressures differentials between duct A and the laboratory shall be provided with an accuracy of
± 5 % relative to the intended pressure difference, i.e. 300 or 500 Pa. SIST EN 1366-1:2014

Orientation
Minimum length (m)
Inside furnace
Outside furnace Horizontal Vertical
4,0
2,0
2,5
2,0 6.1.3 Cross-section The standard sizes of ducts given in Table 2 shall be tested unless only smaller cross-sections are used: Table 2 – Internal cross-section of test specimen (dimension of the open cross-section) Duct
Rectangular
Circular
Width (mm)
Height (mm) Diameter (mm)
A
1000 ± 10 500 ± 10
800 ± 10
B
1000 ± 10 250 ± 10
630 ± 10 6.2 Number of tests One test specimen shall be tested for each type of installation to be evaluated. 6.3 Design 6.3.1 General The test shall be made on a test specimen representative of the complete duct assembly on which information is required. The method of duct construction, support and penetration shall be representative of that used in practice. Ducts shall be arranged as shown in Figures 1, 2 and 3. 6.3.2 Minimum distance between the ducts and between ducts and furnace walls There is no limit to the number of ducts that may be tested simultaneously in the same furnace, provided that there is sufficient space to do so, in accordance with the dimensions shown in Figures 1, 2 and 3. There shall be a minimum clear spacing of 500 mm between the top of a horizontal duct and the ceiling. A minimum clear spacing of 500 mm shall be provided between the underside of a horizontal duct and the floor. Similarly, there shall be a minimum clear spacing of at least 500 mm between either the adjacent duct or furnace wall. The minimum clear spacing between the branch of duct A and either the adjacent duct or furnace wall shall be 250 mm. SIST EN 1366-1:2014

Thickness mm
Density kg/m3 Test duration t h Normal concrete/ masonry
110 ± 10 150 ± 10 175 ± 10
2200 ± 200 2200 ± 200 2200 ± 200 t ≤ 2 2 < t ≤ 3 3 < t ≤ 4
Aerated concretea)
110 ± 10 150 ± 10 650 ± 200 650 ± 200 t ≤ 2 2 < t ≤ 4
a) This supporting construction may be made from blocks, bonded together with mortar or adhesive. A standard flexible wall construction shall be selected from the specifications as described in detail in EN 1363-1. Table 4 - Standard floor constructions Type of construction
Thickness mm Density kg/m3 Test duration t h Normal concrete
110 ± 10 150 ± 10 175 ± 10 2200 ± 200 2200 ± 200 2200 ± 200 t ≤ 1,5 1,5 < t ≤ 3 3 < t ≤ 4
Aerated concrete
125 ± 10 150 ± 10 650 ± 200 650 ± 200 t ≤ 2 2 < t ≤ 4
For testing purposes: The deflection of the floor construction may be reduced, i.g. by supporting it by I-beams. If a vertical duct passes the top floor the floor construction may be reinforced except 200 mm around the opening. 7.3 Non-standard supporting constructions When the test specimen is intended to be used in a form of construction not covered by the standard supporting constructions, it shall be tested in the supporting construction in which it is intended to be used. SIST EN 1366-1:2014
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