UL SUBJECT 711A-2017 OUTLINE OF INVESTIGATION FOR THE FIRE TEST METHOD FOR PORTABLE HAND-HELD EXTINGUISHERS INTENDED FOR USE ON RESIDENTIAL COOKING EQUIPMENT (Issue 2).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSeptember 14, 20171UL 711AOutline of Investigation for the Fire Test Method for Portable Hand-HeldExtinguishers Intended for Use On Residential Cooking EquipmentIssue Number: 2September 14, 2017S

2、ummary of TopicsThis Second Issue of the Outline of Investigation for the Fire Test Methodfor Portable Hand-Held Extinguishers Intended for Use on ResidentialCooking Equipment covers the fire test method for evaluating portablehand-held fire extinguishers intended for use on residential cookingequip

3、ment and clarifies the performance and construction requirements.ULs Outlines of Investigation are copyrighted by UL LLC. 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 r

4、egardingthose Outlines of Investigation shall remain the sole and exclusive property of ULLLC.COPYRIGHT 2017 UL LLCUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSEPTEMBER 14, 2017UL 711A2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHOR

5、IZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 Units of Measurement .43 Undated References 44 Glossary .4PERFORMANCE5 General 46 Fire Test Residential Range Top Test Apparatus 56.1 Cooking range .56.2 Test vessels .57 Test Method for Fire Extin

6、guishment Tests .67.1 Extinguisher preparation .67.2 General Test apparatus preparation .78 Extinguishment Tests 78.1 General .78.2 Cooking oil splash tests .89 Electrical Conductivity .8MARKING10 General .9SEPTEMBER 14, 2017 UL 711A 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION O

7、RDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover the fire test method for evaluating portable hand-held fire extinguishersintended for use on residential cooking equipment. Tests for extinguishers rated for Class A, Class B,Class C and Class K are covered in th

8、e Standard for Rating and Fire Testing of Fire Extinguishers,ANSI/UL 711.1.2 Fire extinguishers, fire extinguishing agents, or both shall also comply with the requirements forconstruction and performance as applicable to specific types, designs, sizes, and arrangements. Suchadditional requirements i

9、nclude ANSI/UL 8, ANSI/UL 154, ANSI/UL 299, ANSI/UL 626, and ANSI/UL 2129and are not within the scope of these requirements.2 Units of Measurement2.1 The metric unit shall be designated as the official unit for purposes of this outline. Where values ofmeasurement are specified in both SI and English

10、 units, either unit is used. In cases of dispute, the metricunit shall be used.3 Undated References3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall beinterpreted as referring to the latest edition of that code or standard.4 Glossary4.1 For the purp

11、ose of this outline, the following definitions apply.4.2 AUTO-IGNITION TEMPERATURE The temperature at which the test fuel ignites automatically.4.3 GAS POINT The point in time when the discharge changes from the extinguishing agent alone toa gas and extinguishing agent combination.PERFORMANCE5 Gener

12、al5.1 Representative samples of residential kitchen fire extinguishers are to be subjected to the testsdescribed in these requirements.SEPTEMBER 14, 2017UL 711A4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6 Fire Test Residential Range Top

13、Test Apparatus6.1 Cooking range6.1.1 Two residential cooking ranges are to be used for the fire tests. A typical cooking range is illustratedin Figure 6.1. One range is to be an electric type and the second is to be a gas type. Each range is to becommercially available, intended for residential use

14、and have four heating elements or burners.This is generated text for figtxt.6.2 Test vessels6.2.1 The following test vessels are to be used for these tests:a) A 330 356 mm (13 14 in) diameter (top of skillet) by 51 mm (2 in) high cast iron skillet;b) A 254 mm (10 in) diameter (top of pan) by 178 mm

15、(7 in) high stainless steel pan; andc) A steel griddle measuring the full width and one-half the depth of the cook top surface with51 mm (2 in) high sidewalls. The griddle is permitted to be fabricated to accommodate the sizerequirements.Figure 6.1Cooking rangeSEPTEMBER 14, 2017 UL 711A 5UL COPYRIGH

16、TED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7 Test Method for Fire Extinguishment Tests7.1 Extinguisher preparation7.1.1 Representative samples of extinguisher units are to be subjected to the extinguishment testsspecified in Table 7.1, as applicable

17、.7.1.2 The extinguishment tests shall be conducted with the extinguishers conditioned for a minimum of 8hours at either 21 2.8C (70 5F) and 49 2.8C (120 5F) as specified in Table 7.1.Table 7.1Fire testsTest No. Test type Extinguisherconditioningtemperature C(F)Appliance type Test vessel Type and amo

18、untof oil1 Extinguishment 21 (70) Gas A 25.4 mm (1 in)peanut2 Extinguishment 21 (70) Gas A 25.4 mm (1 in)vegetable3 Extinguishment 21 (70) Gas B 101.6 mm (4 in)peanut4 Extinguishment 21 (70) Gas B 101.6 mm (4 in)vegetable5 Extinguishment 21 (70) Electric A 25.4 mm (1 in)peanut6 Extinguishment 21 (70

19、) Electric A 25.4 mm (1 in)vegetable7 Extinguishment 21 (70) Electric B 101.6 mm (4 in)peanut8 Extinguishment 21 (70) Electric B 101.6 mm (4 in)vegetable9 Extinguishment 21 (70) Gas or Electric C 6.3 12.7 mm (1/4 1/2 in) vegetable10 Splash andExtinguishment49 (120) Gas or Electric A 25.4 mm (1 in)ve

20、getableSEPTEMBER 14, 2017UL 711A6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.2 General Test apparatus preparation7.2.1 The test apparatus for the residential range top testing is to be as specified in Section 6, Fire Test Residential Ran

21、ge Top Test Apparatus.7.2.2 Fuels used in the test vessels are to be vegetable oil and peanut oil having a minimum auto ignitiontemperature of 363C (685F) when measured with a thermocouple located 12.7 mm (1/2 in) below the oilsurface and not closer than 76 mm (3 in) from the vessel walls. The amoun

22、ts of test fuels to be utilizedare specified in Table 7.1.8 Extinguishment Tests8.1 General8.1.1 The tests shall be conducted in a relatively draft free area of a room having a minimum ambienttemperature of 10C (50F). The range shall be positioned within the test room such that walls orobstructions

23、shall be located at least1m(3ft.) away from the range.8.1.2 An extinguisher unit is to be tested using arrangements and the test vessels as described in 6.2 andTable 7.1.8.1.3 When tested as specified in 8.1.3 8.1.9, an extinguisher unit shall:a) Cause the flame in the test vessel to be completely e

24、xtinguished;b) Not permit reignition of the oil for 15 minutes; andc) If the test vessel is tested with a thermocouple inserted in the cooking oil (see 7.2.2), causethe temperature of the oil to decrease below its observed auto-ignition temperature.8.1.4 Separate fire tests are to be conducted using

25、 the test vessel and oil types as described in Table7.1. For each test, the test vessel is to be filled with the specified amount and type of oil and positionedon a burner whose location is considered to be most difficult to achieve extinguishment.8.1.5 The range top burner for the test vessel is to

26、 be adjusted to the maximum intensity position andallowed to heat the test vessel at a rate not less than 6C (12F) per minute at temperatures of 260 316C (500 600F) when measured with the thermocouple positioned in accordance with 7.2.2, until theoil auto ignites. The test vessel shall be uncovered

27、during the heating process. An external heat sourceis permitted to be applied to attain this heating rate.8.1.6 The extinguisher is to be discharged onto the fire after the test vessel has burned freely for aminimum of 1 minute after auto ignition with all heating sources continued to be applied.8.1

28、.7 The extinguisher shall be continuously discharged onto the vessel from an initial distance of 1.5 m(5 ft) and no greater than a 45 degree angle from the center of the vessel until the extinguisher iscompletely discharged. After the initial discharge, the distance is permitted to be reduced, but s

29、hall notextend beyond the edge of the cooking vessel. After the extinguisher is completely discharged, the energysupply to all heat sources is to be discontinued.SEPTEMBER 14, 2017 UL 711A 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL8.1.8

30、 After discharge, observations are to be made for:a) Extinguishment;b) Reignition of the cooking oil; andc) A decrease in the oil temperature below the oil auto-ignition temperature.8.1.9 Based on observations made during the fire extinguishment tests described in Table 7.1, some ofthe tests may be

31、waived if a determination can be made that selected fire test arrangements arerepresentative of all tests described in Table 7.1.8.2 Cooking oil splash tests8.2.1 When tested as described in 8.2.1 8.2.5 an extinguisher unit shall:a) Cause the fire in the test vessel to be completely extinguished; an

32、db) cause no splashing or flaming oil outside the cooking vessel and no splashing of oil dropletslarger than 9.4 mm (3/8 in.) diameter 305 mm (12 in) past the outside surface of the cookingvessel due to the extinguisher operation.8.2.2 A clean, flat surface at least 610 mm (24 in) wide is to be prep

33、ared around the test vessel to detectsplashing oil.8.2.3 The amount of oil and the test vessel for the splash test described in Table 7.1 are to be used.8.2.4 The extinguisher discharge is to commence at distance of 0.6 m (2 ft) and at a 45 degree angle fromthe center of the vessel until the extingu

34、isher is completely discharged.8.2.5 Foaming over the edge of the vessel and dispersion of residual extinguishing agent at gas point isacceptable performance.9 Electrical Conductivity9.1 Residential Kitchen Extinguishers shall comply with either ANSI/UL 711, Section 9, Class Cextinguishers or for ex

35、tinguishers containing a water-based agent, the agent shall not have a conductivityhigher than 1.00 microsiemens/cm at 25C (77F).SEPTEMBER 14, 2017UL 711A8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARKING10 General10.1 An extinguisher co

36、mplying with the requirements in this Outline shall be marked “Residential KitchenFire Extinguisher” in addition to the other markings required by the applicable product standards.10.2 Residential Kitchen Fire Extinguishers shall not be marked with reference to Class C.Exception: Residential Kitchen

37、 Fire Extinguishers are able to be marked with reference to Class C whenit is also rated for Class A, or Class B, or both Class A and Class B.SEPTEMBER 14, 2017 UL 711A 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSEPTEMBER 14, 2017UL 711A10No Text on This Page