UL SUBJECT 1767B-2015 UL Outline for Investigation SPECIFIC APPLICATION EARLY-SUPPRESSION FAST-RESPONSE (ESFR) PENDENT SPRINKLERS HAVING A NOMINAL DISCHARGE COEFFICIENT OF 28 0 (Is.pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 23, 20151UL 1767BSPECIFIC APPLICATION EARLY-SUPPRESSION FAST-RESPONSE (ESFR)PENDENT SPRINKLERS HAVING A NOMINAL DISCHARGE COEFFICIENTOF 28.0.Issue Number: 1April 23, 2015Summary of TopicsTh

2、is First Issue of the Outline of Investigation for Specific ApplicationEarly- Suppression Fast-Response (ESFR) Pendent Sprinklers Having ANominal Discharge Coefficient Of 28.0, UL 1767B, includes requirementsfor ESFR sprinklers having a nominal K-factor of 28.0 intended forprotection of cartoned, un

3、expanded Group A plastic commodity stored upto 43 feet (13.1 m) in height with a maximum ceiling height of 48 feet(14.6 m).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 Inve

4、stigation and all copyrights, ownerships, and rights regardingthose 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 ULAPRIL

5、 23, 2015UL 1767B2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 Components 43 Units of Measurement .44 Undated References 55 Glossary .5CONSTRUCTION6 Nominal “K” Factors .5PERFORMANCE7 Larg

6、e Scale Fire Tests for Specific Application Pendent ESFR Sprinklers having a NominalK-factor of 28.0 .5APRIL 23, 2015 UL 1767B 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover specific applicatio

7、n early suppression fast response (ESFR) sprinklersintended for installation in accordance with the Standard for the Installation of Sprinklers, NFPA 13.1.2 ESFR sprinklers covered by this Outline are also required to comply with the applicable requirementsin the Standard for Early-Suppression Fast-

8、Response Sprinklers, UL 1767, except as noted herein.1.3 The requirements in this Outline are not intended to restrict the application of representative fire andother tests for special sprinklers, as referenced in Standard for the Installation of Sprinklers, NFPA 13, thatare intended to provide prot

9、ection for specific fire hazards.2 Components2.1 Except as indicated in 2.2, a component of a product covered by this Outline shall comply with therequirements for that component.2.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not re

10、quired in the application of the component in theproduct covered by this Outine, orb) Is superseded by a requirement in this Outline.2.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.2.4 Specific components are incomplete in construction featur

11、es or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.3 Units of Measurement3.1 Values stated without parentheses are the requ

12、irement. Values in parentheses are explanatory orapproximate information.APRIL 23, 2015UL 1767B4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements o

13、f this outline shall beinterpreted as referring to the latest edition of that code or standard.5 Glossary5.1 For the purpose of these requirements, the following definitions apply.5.2 STANDARD FIRE TEST COMMODITY CARTONED GROUP A PLASTICS (UNEXPANDED) Single wall corrugated cardboard cartons measuri

14、ng a nominal 21 by 21 by 20.5 inches (0.53 by 0.53by 0.52 m) high containing 125 crystalline polystyrene cups in separate compartments within the carton.Single wall corrugated cardboard sheets are used to separate the five layers of cups and interlockingsingle wall corrugated cardboard vertical divi

15、ders are used to separate the 25 cups in each layer. Eightof the cartons are arranged ina2x2x2array with the open end of the cups facing down and placedon a nominal 42 by 42 by 5 inches (1.1 by 1.1 by 0.13 m) high two-way hardwood pallet.CONSTRUCTION6 Nominal “K” Factors6.1 A large K-factor ESFR spr

16、inkler shall have a K factor as specified in Table 6.1 or larger asreferenced in Standard for the Installation of Sprinklers, NFPA 13.Table 6.1Nominal “K” factor and thread sizeNominal K Discharge coefficient K External thread-type28.0 26.6 29.4 1 inch NPTPERFORMANCE7 Large Scale Fire Tests for Spec

17、ific Application Pendent ESFR Sprinklers having a NominalK-factor of 28.07.1 When tested as described in 7.2 - 7.6, a sprinkler shall be capable of suppressing the large-scale firesdescribed for each sprinkler such that compliance with the requirements in Table 7.1 is demonstrated.APRIL 23, 2015 UL

18、1767B 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 7.1Fire test requirements for specific application pendent ESFR sprinklers having a nominal 28.0K-factorCriteria to be evaluated Test requirementsNominal K-Factor, gpm/(psi)1/228.0Ma

19、ximum number of sprinklers permitted to operate 8Maximum 1 minute average steel temperature, F (C) 1000 (538)Regrowth of fire No signs of regrowth at the end of the test as evidenced bysignificantly increasing steel or gas temperatures at the ceilingFire spread No sustained combustion at the end of

20、the main test array andnone at the outer edges of the target array7.2 The test room for these tests shall have provisions for venting the heat and smoke and for drainageof the sprinkler discharge.7.3 A wet pipe automatic sprinkler system shall be installed below a smooth, flat, noncombustible ceilin

21、gunless otherwise specified in the test conditions. The flow through the sprinkler system shall be controlledto maintain the required sprinkler discharge pressure specified in Table 7.2, as applicable. Representativesample sprinklers shall be installed at the spacing specified for each fire test. Sp

22、rinklers shall be installedthroughout the test area and supplied through a looped piping system consisting of nominal 2, 2 or 3inch diameter pipe.Table 7.2Fire test conditions for nominal K=28 ESFR pendent sprinklers for a 48 ft (14.6 m) ceiling heightTest 1 Test 2 Test 3 Test 4Storage type Double r

23、ow rack Double row rack Double row rack Double row rackCommodity type Std. cartonedgroup A plasticStd. cartonedgroup A plasticStd. cartonedgroup A plasticStd. cartoned groupA plasticTest array See Figure 7.3 See Figure 7.2 See Figure 7.2 See Figure 7.1Nominal storageheight, ft (m)43 (13.1) 38 (11.6)

24、 38 (11.6) 28 (8.5)Nominal ceilingheight, ft (m)48 (14.6) 48 (14.6) 48 (14.6) 48 (14.6)Nominalclearance todeflector, ft (m)5 (1.5) 10 (3.0) 10 (3.0) 20 (6.1)Sprinklertemperture ratingMaximumtemperature ratingMinimumtemperature ratingMinimumtemperature ratingMinimumtemperature ratingNominaldeflector

25、toceiling distance,in (cm)Maximumspecified bymanufacturerMaximum specifiedby manufacturer14 (35.6) Maximum specifiedby manufacturerSprinklerspacing, ft x ft(mxm)10 x 10 (3.0 x 3.0) 10 x 10 (3.0 x 3.0) 10 x 10 (3.0 x 3.0) 10 x 10 (3.0 x 3.0)Nominaldischargepressure, psig(kPa)35 (241) 35 (241) 35 (241

26、) 35 (241)Ignition location Between four Between two onsame branchlineUnder one offset Between two onsame branchlineAPRIL 23, 2015UL 1767B6Table 7.2 Continued on Next PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 7.2 ContinuedTest

27、1 Test 2 Test 3 Test 4Duration of testafter firstsprinkleroperation,minutes30 30 30 307.4 A nominal 4-foot (1.2-m) length of 2 by 2 by 0.25 inch (50 by 50 by 6 mm) steel angle beam shall bemounted adjacent to the ceiling above the ignition location. Five equally spaced Type K, or equivalent,thermoco

28、uples shall be embedded in the steel angle beam to measure its temperature.7.5 A means shall be provided to determine the time and number of sprinkler operations. Water pressureand flow shall be monitored and measured through calibrated flow meters. Significant events shall bemonitored and recorded

29、using calibrated timing devices located within the data acquisition system ormanually recorded, as applicable.7.6 The ignition source shall consist of either two or four cellulose cotton igniters positioned within thearray near floor level as specified in Figures 7.1 - 7.3. Each igniter is half of a

30、 standard igniter constructedfrom a nominal 3-inch (76-mm) diameter by nominal 3-inch (76-mm) long bundle soaked with 4 0.125fluid ounces (236 7.4 ml) of gasoline and wrapped in a polyethylene bag.This is generated text for figtxt.APRIL 23, 2015 UL 1767B 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR F

31、URTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFigure 7.1Fire test for double row rack storage of cartoned group A plastic commodity (nominal 28 feethigh)APRIL 23, 2015UL 1767B8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFigu

32、re 7.2Fire test for double row rack storage of cartoned group A plastic commodity (nominal 38 feethigh)APRIL 23, 2015 UL 1767B 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULFigure 7.3Fire test for double row rack storage of cartoned group A plastic commodity (nominal 43 feethigh)APRIL 23, 2015UL 1767B10