1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJULY 9, 20151UL 1489Outline of Investigation for Fire Resistant Pipe Protection Systems CarryingCombustible LiquidsIssue Number: 1July 9, 2015Summary of TopicsCertain jurisdictions require a fire
2、 resistance rating for the fire protectionof pipe carrying combustible liquids in the interior of a building (enclosedstructures and semi conditioned spaces). This outline is being createdto aide in evaluating fire protection systems to satisfy the prescriptivecode requirements (such as the 2008 New
3、 York City Mechanical CodeSection 1305.9.3 for Horizontal Offsets) for such piping networks.This first issue of the Outline of Investigation for Fire Resistant PipeProtection Systems Carrying Combustible Liquids, UL 1489, coversproducts such as, but not limited to, sleeve, wrap or spray-on type fire
4、protection systems applied over or on to rigid piping networks typicallyconsisting of short sections of thick wall pipe connected with threaded orwelded fittings that are assembled on site.This Outline of Investigation describes a standard test method to developthe data necessary for certifying fire
5、 resistive pipe protection systemsfor specific applications.ULs Outlines of Investigation are copyrighted by UL. Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines of Investigation and all copyrights, ownerships, and rights regardingt
6、hose Outlines of Investigation shall remain the sole and exclusive property of UL.COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJULY 9, 2015UL 14892No Text on This PageUL COPYRIGHTED MATERIAL NOT
7、AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 Units of Measurement .53 References .54 Glossary .6PERFORMANCE5 Fire Exposure Test 65.1 Test sample .65.2 Conditioning .75.3 Protection of assembly and sample .75.4 Furnace temperature contro
8、l and measurement 85.5 Furnace thermocouple preparation 95.6 Sample temperature measurement .95.7 Differential pressure measurements .115.8 Duration of test 136 Hose Stream Test .137 Leakage Test 13CONDITIONS OF ACCEPTANCE8 General .148.1 Fire exposure .148.2 Thermal protection .148.3 Correction fir
9、e exposure test 148.4 Leakage 15REPORT9 Results .1510 Application of Results .1611 Other Reference Material 16APPENDIX AJULY 9, 2015 UL 1489 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover the i
10、nvestigation of products such as, but not limited to, sleeve, wrap orspray-on type fire protection systems of various materials and construction intended to protect rigid pipingnetworks containing combustible liquids from a fire exposure, such as diesel fuel or heating oil, that arerouted in buildin
11、gs between the supply tank and utilizing equipment.1.2 Under these requirements, samples of fire resistive pipe protection systems are exposed to a fireexposure for a duration based on a desired hourly rating, and then to an application of a water hosestream. The fire resistive pipe protection syste
12、m will also be evaluated for its ability to resist leakage ofliquid from the pipe. The following measurements and determinations are made during the fire exposureand water hose stream tests:a) Measurement of temperature on the outer surface of the pipe.b) Determination of the integrity of the fire r
13、esistive pipe protection systems during the fireexposure and water hose stream test.c) Determination of tightness and air leakage resistance of the pipe after the fire exposure andwater hose stream test.1.3 The fire exposure and water hose stream tests may not be representative of all fire condition
14、s,conditions may vary with changes in the amount, nature, and distribution of fire loading, ventilation,compartment size and configuration, and heat conducting and dissipating characteristics of thecompartment in which the fire resistive pipe protection system is installed. These requirements provid
15、e arelative measure of fire performance of comparable assemblies under these specified fire exposureconditions. Any variation from the construction or operating condition tested, such as size, method ofassembly, and materials, may substantially change the performance characteristics of the system.1.
16、4 The classifications for building construction and materials are intended to register performance duringthe period of fire exposure and are not intended to be interpreted as having determined their acceptabilityfor use after fire exposure.1.5 This standard does not evaluate the fuel pipe constructi
17、on in terms of components or assemblytechniques. This is a test to evaluate the fire protection element of the assembly. It is assumed that fuelpipe requirements (e.g. sealing compounds/lubricants etc.) that are established by other codes andstandards for the will be satisfied outside of this test m
18、ethod.1.6 These requirements do not cover:a) Accumulation of data as to performance of fire resistive pipe protection systems constructedwith components or sizes other than those tested.b) Evaluation of the contribution of the fire resistive pipe protection systems generation ofsmoke, toxic gases, o
19、r other products of combustion.c) Measurement of flame spread over the surface of the tested elements.d) Evaluation of the firestop system in openings penetrated by the fire resistive pipe protectionsystems, unless specifically provided for in the system tested.JULY 9, 2015UL 14894UL COPYRIGHTED MAT
20、ERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULe) Evaluation of the impact of fire and elevated temperatures on the pipe and associated fittingsand other construction features.f) Pipe systems that carry fuels with a boiling point below room temperature.g) The
21、compatibility between the protection system and the pipe material. It is recommendedthat the compatibility between the protection system and the pipe material should be evaluatedby an independent third party and proven acceptable to the Authority Having Jurisdiction.1.7 The results obtained by use o
22、f this test method are intended to develop data that will assist designers,authorities having jurisdiction, end-users, installers and others in determining the acceptability, withreference to fire resistive pipe protection systems for use with specific pipe applications.1.8 Tests for burning charact
23、eristics of building materials, based on rate of flame spread and the densityof smoke developed when exposed to a standard fire, can be found in the requirements for surfaceburning characteristics of building materials in the Standard for Test for Surface Burning Characteristicsof Building Materials
24、, UL 723.1.9 Tests for fire resistance of firestop systems which penetrate walls, floors and other membranes canbe found in the requirements for the Standard for Fire Tests of Penetration Firestops, UL 1479.1.10 Application of these test results to predict fire resistance of pipe protection systems
25、in actualinstallations requires careful evaluation of the pipe and fire resistive pipe protection system materialsunder normal operating conditions.2 Units of Measurement2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.3 Refer
26、ences3.1 Any undated reference to a code or standard appearing in the requirements of this outline shall beinterpreted as referring to the latest edition of that code or standard.JULY 9, 2015 UL 1489 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION F
27、ROM UL4 Glossary4.1 For the purpose of this outline, the following definitions apply.4.2 FIRE RESISTIVE PIPE PROTECTION SYSTEM A specific construction of devices, materials orprotective coatings installed around (such as sleeve or wrap types), or applied to (such as spray-ontypes), pipe and associat
28、ed components (for example pipe hangers) to maintain the integrity of pipesubjected to a standardized fire exposure.4.3 RIGID PIPING NETWORK An assembly of pipe, connections, fittings and other components thatwhen combined provide a stable and continuous channel for conveying combustible liquids. Su
29、ch pipeshall meet the minimum specifications established by others for its anticipated use in the field.4.4 TEST ASSEMBLY The construction on to which the fire resistive pipe protection system is installedand suspended.4.5 TEST SPECIMEN The fire resistive pipe protection system being evaluated.PERFO
30、RMANCE5 Fire Exposure Test5.1 Test sample5.1.1 Each representative type of fire resistive pipe protection system for which rating is desired is to betested beneath a floor assembly unless it is determined that all features of its intended use can beevaluated by testing in a wall assembly. A minimum
31、of 5 ft of the test specimen shall be exposed to thefire.5.1.2 The floor or wall assembly is to be constructed of materials which offer adequate support for the fireresistive pipe protection system during both the fire exposure and water hose stream tests, but which donot influence the physical fire
32、 performance of the fire resistive pipe protection system due to excessivedeflection or falling debris.5.1.3 The pipe and fire resistive pipe protection system are to be installed as complete systems and areto each incorporate at least one intermediate support and all connections and fittings for wh
33、ich isrepresentative of that for which a rating is desired. If the fire resistive pipe protection system is applied insegments, a segment (splice, joint or overlap) representative of the field application shall be included inthe test sample.5.1.4 If a rating is desired only for a specific rigid fuel
34、 pipe network, the installed fire resistive pipeprotection system shall simulate the condition for which rating is desired.5.1.5 Unless a rating is desired for a specific construction, the firestop system for the floor opening is tobe constructed using materials and techniques that provide an effect
35、ive heat and smoke seal withoutinfluencing the performance of the fire resistive pipe protection system as a result of degradation orexcessive heat transfer to the fire resistive pipe protection system within the firestop system.JULY 9, 2015UL 14896UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
36、REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.1.6 The periphery of the test sample is to be not closer than 12 in (305 mm) from the furnace edge.The distance between the test sample periphery and furnace edge may be reduced if it is demonstratedthat the edge effects do not affect the test
37、results.5.2 Conditioning5.2.1 Prior to fire testing, each fire resistive pipe protection system and floor or wall assembly is to beconditioned, if necessary, to provide a moisture condition representative of that likely to exist in similarconstructions in buildings. The floor or wall assembly may be
38、 conditioned independently of the fireresistive pipe protection systems. The test moisture condition is to be considered as that which would beestablished in equilibrium resulting from drying of a sample in air having 50% relative humidity at 73F(23C). If it is impractical to achieve this equilibriu
39、m moisture condition, the test may be conducted whenthe dampest portion of the test assembly and test sample have achieved an equilibrium moisture contentcorresponding to drying in air having 50 to 75% relative humidity at 73 5F (23 3C).Exception: These requirements may be waived if:a) An equilibriu
40、m moisture condition is not achieved within a 12 month conditioning period; orb) The construction is such that drying of the interior of the assembly is prevented by hermeticsealing of the construction materials. In these cases, the conditioning need then be continuedonly until the test assembly has
41、 developed sufficient strength to retain the test samples securelyin position.5.2.2 A procedure with electric sensing elements may be used to determine the relative humidity withina test assembly and test sample made of materials other than concrete.5.3 Protection of assembly and sample5.3.1 The tes
42、ting equipment, test sample and assembly are to be protected from any condition of wind orweather that might influence the test results. The ambient air temperature at the beginning of the test isto be within the range of 50 to 90F (10 to 32C). The velocity of air across the unexposed surface of the
43、test sample, measured immediately before the test begins, is not to exceed 4.4 ft/s (1.3 m/s) asdetermined by an anemometer placed at right angles to the unexposed surface. If mechanical ventilationis employed during the test, an air stream is not to be directed across the surface of the sample.JULY
44、 9, 2015 UL 1489 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.4 Furnace temperature control and measurement5.4.1 The temperature of the furnace is to be controlled so that the area under the measuredtemperature-time curve of furnace temp
45、erature, obtained by averaging the result from thermocouple (see5.4.3 5.5.2) or pyrometer readings, is within 10% of the corresponding area under the standardtemperature-time curve for fire tests of1horless duration, within 7.5% for tests longer than 1 h but notlonger than 2 h, and within 5% for tes
46、ts exceeding2hinduration. The points on the curve that determineits character areas follows in (a) (h) below.a) 50 90F (10 to 32C) at 0 minb) 1000F (538C) at 5 minc) 1300F (704C) at 10 mind) 1550F (843C) at 30 mine) 1700F (927C) at 1 hf) 1850F (1010C) at 2 hg) 2000F (1093C) at 4 hh) 2300F (1260C) at
47、 8 h5.4.2 For a more precise definition of the temperature-time curve, see Appendix A. The test sponsor mayalso elect to utilize the temperature-time curve of the Standard for Rapid Rise Fire Tests of ProtectionMaterials for Structural Steel, UL 1709 (Standard Test Methods for Determining Effects of
48、 LargeHydrocarbon Pool Fires on Structural Members and Assemblies, ASTM E1529) to expose to the testassembly.5.4.3 The measured temperature to be compared with the standard temperature-time curve is to be theaverage temperature obtained from the readings of thermocouples symmetrically disposed and d
49、istributedwithin the test furnace to indicate the temperature near all parts of the test assembly.5.4.4 A minimum of three thermocouples are to be used, and there are to be no fewer than fivethermocouples per 100 ft2(9.3 m2) of floor surface, and no fewer than nine thermocouples per 100 ft2ofwall surface. The floor or wall surface area is to be the gross area of test assembly and system areas.5.4.5 For floors, the junctions of the thermocouples are to be placed 12 in (305 mm) from the exposedsurface of the floor assembly. For walls, the junct
