1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMay 10, 20161UL 63345Outline of Investigation for Buoyant Media for Protection Against FullSurface Fires in Fixed Flammable or Combustible Liquid Tanks orRepositoriesISSUE NO: 1May 10, 2016Summar
2、y of TopicsThis is the first issue of the Outline of Investigation for Buoyant Media forProtection Against Full Surface Fires in Fixed Flammable or CombustibleLiquid Tanks or Repositories, UL 63345. This Outline is issued todocument the requirements to be employed for the evaluation.ULs Outlines of
3、Investigation are copyrighted by UL. Neither a printed norelectronic copy of an Outline of Investigation should be altered in anyway. All of ULs Outlines of Investigation and all copyrights, ownerships,and rights regarding those Outlines of Investigation shall remain the soleand exclusive property o
4、f UL.COPYRIGHT 2016 UL LLCUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMAY 10, 2016UL 633452No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 S
5、cope .42 Units of Measurement .43 Undated References 44 Glossary .4CONSTRUCTION5 General 55.1 Media depth .5PERFORMANCE6 Test Equipment .57 Test Fuels .68 Fire Tests Buoyant Media 78.1 General .78.2 Fuel 78.3 Application .78.4 Test method .78.5 Burnback test 88.6 Flash fire 89 Chemical Compatibility
6、 Testing .99.1 General .99.2 Temperature cycling 99.3 Chemical exposure .99.4 Post-exposure tests .10MANUFACTURING AND PRODUCTION TESTS10 General 1011 Verification of Density .1112 Verification of Flow-Over .1112.1 General .1112.2 Fluid 1112.3 Application 1112.4 Test method .1112.5 Flow-over test 12
7、INSTRUCTIONS13 Buoyant Media .12MARKING14 Buoyant Media .13MAY 10, 2016 UL 63345 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover buoyant media products that provide fire protection against full
8、surfacefires in flammable or combustible liquid tanks or repositories constructed in accordance with the applicableAmerican Petroleum Institute publication. The flammable and combustible fuel types are specified in themanufacturers instructions.1.2 Products are intended to be applied on top of an in
9、ternal floating roof of an enclosed fixed roof tankas supplemental protection or directly on the surface of the flammable or combustible fuel of an enclosedfixed roof tank as primary protection.1.3 Products are intended to be used in installations that comply with local regulations for vaporemission
10、s and control.2 Units of Measurement2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.3 Undated References3.1 Any undated reference to a code or standard appearing in the requirements of this Outline ofInvestigation shall be in
11、terpreted as referring to the latest edition of that code or standard.4 Glossary4.1 For the purpose of these requirements, the following definitions apply.4.2 MEDIA BLANKET The layer resulting from the agglomeration of individual buoyant media over thearea in which a buoyant media product has been a
12、pplied.4.3 MEDIA DEPTH The calculated depth to which a specified volume of media will cover a givensurface area when evenly distributed. Media Depth in inches (mm x 25.4) may be calculated using thefollowing formula:Media Depth = V/AWhere:V= specified volume in cubic feet (m3x 35.31) of media to be
13、appliedA= surface area in square feet (m2x 10.76) to be protected by the applied mediaMAY 10, 2016UL 633454UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONSTRUCTION5 General5.1 Media depth5.1.1 The manufacturer shall specify the minimum med
14、ia depth for each fuel type that the buoyant mediais intended to protect.5.1.2 A required percent overfill shall be determined in accordance with 9.4.1 (a) and noted in themanufacturers installation procedure. The application depth required for any buoyant media installationshall include this overfi
15、ll in order to account for media that is damaged during shipping or application.PERFORMANCE6 Test Equipment6.1 FIRE TEST PAN - The fire test pan is to be square, straight sided, with a minimum area of 50 squarefeet (4.65 m2). The pan is to be of steel not less than 1/4 inch (6.4 mm) thick with liqui
16、d tight welded jointsand provided with 3/16 inch (4.8 mm) thick angle or equivalent to reinforce the upper edge. Thereinforcement is to be continuous around the perimeter of the pan and is to form a turned-out edge flushwith the top edge of the pan. The top edge surface so formed is to be 1-3/4 inch
17、 (44 mm). The reinforcingangle, when used, is to be continuously welded to the outside of the pan at the top edge and tack weldedat the edge of the lower lip of the angle.6.2 FIRE TEST PAN BARRIER The fire test pan barrier shall completely surround the fire test pan onfour sides and extend 2 feet (0
18、.61 m) above the top lip of the fire test pan. There shall be not more than1 inch (25 mm) of clearance between the fire test pan and the fire test pan barrier. A cover that providescomplete coverage of the test pan is to be included. The barrier is to be of noncombustible construction.6.3 FLOW-OVER
19、TEST PAN The flow-over test pan is to be square, straight sided, with a minimumarea of 12-1/2 square feet (1.16 m2). The pan is to be of steel not less than 1/4 inch (6.4 mm) thick withliquid tight welded joints.6.4 STOVE PIPE A device intended to provide an open area for the 1 minute free burn duri
20、ng theburnback test. The stove pipe shall be constructed of 2818 gauge (.015 .048 inch thickness) sheetsteel. The stove pipe is to be cylindrical in shape with an inside diameter not less than 12 inch (305 mm)and length not greater than 14 inch (356 mm).MAY 10, 2016 UL 63345 5UL COPYRIGHTED MATERIAL
21、 NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7 Test Fuels7.1 One or more of the following test fuels shall be used: (or some similar lead in):a) HEPTANE Commercial grade hydrocarbon having the following characteristics:Distillation Initial Boiling Point 190F (88C
22、)Dry Point 212F (100C)Specific Gravity (60F/60F)(15.6C/15.6C) 0.68-0.73b) ETHANOL Anhydrous ethyl alcohol polar solvent containing denaturing additives withinthe following ranges:Ethanol Minimum 93.3 WT%Methyl Isobutyl Ketone Maximum 4.9 WT%Heptane Maximum 1.3 WT%Water Maximum 5.0 WT%c) DIESEL IRM 9
23、03 grade test fuel as defined in the Standard Test Method for RubberProperty-Effect of Liquids, ASTM D471.d) TOULENE Methylbenzene aromatic hydrocarbon solvent, CAS Registry Number 108-88-3, having a purity of no less than 99.0% by weight.e) ISO-OCTANE Reference Fuel A test fuel as defined in the St
24、andard Test Method forRubber Property-Effect of Liquids, ASTM D471.f) CRUDE OIL Unrefined blend of hydrocarbons having varying molecular weights and othernaturally-occurring organic compounds having the characteristics specified in the buoyant mediamanufacturers instructions.g) POLAR SOLVENT FUELS S
25、tandard Polar Test fuels are as follows:Polar Solvent Group Standard Test FuelAlcohol Isopropyl AlcoholKetones Dimethyl KetoneEsters N-Butyl AcetateCarboxylic Acids Glacial Acetic AcidAmines Ethylene DiamineAldehydes PropionaldehydeEthers, except Diethyl and Methyl Tertiary Butyl Ether Isopropyl Eth
26、erImpurities for any polar test fuel is not to exceed 1.0 percentMAY 10, 2016UL 633456UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL8 Fire Tests Buoyant Media8.1 General8.1.1 Each buoyant media to be tested is to be taken from its container
27、as received from themanufacturer.8.1.2 Buoyant media is to be tested according to the procedures defined in sections 8.5 and 8.6.8.1.3 The tests shall be prepared according to the details provided in sections 8.2 8.4.8.2 Fuel8.2.1 The test shall be conducted once each with commercial grade heptane a
28、nd ethanol. Whenevaluating a product for use on polar solvent fuel groups other than ethanol, test fuels shall be inaccordance with the fuels specified in 7.1 (g).8.2.2 Test fuels shall be at or above 50F (10C) prior to being placed in the test pan.8.3 Application8.3.1 Buoyant media shall be applied
29、 to the media depth specified in 5.1.1.8.3.2 The buoyant media interface shall be in direct contact with the fuel surface.8.4 Test method8.4.1 The fire test pan is to be located on the ground and inside of the fire test pan barrier.8.4.2 The stovepipe is to be placed such that it is at least 2-1/2 f
30、eet (0.76m) from any side of the test pan.The stovepipe shall be elevated from the bottom of the pan by a distance of not more than 1 inch (25.4mm), such that liquid poured through the stovepipe may flow freely into the test pan.8.4.3 The buoyant media shall be introduced to the pan in accordance wi
31、th the manufacturers applicationinstructions.Exception: No media shall be added to the area enclosed by the stovepipe.8.4.4 A layer of water 1 inch (25 mm) deep shall be added to the test pan.Exception: If test fuels used are miscible with water, no water shall be added to the test pan.8.4.5 The vol
32、ume of fuel specified in the following shall be added to the test pan by pouring through thestovepipe.a) If commercial grade heptane or another non-miscible test fuel is used, a fuel volumeequivalent to a fuel layer 2 inches (50.8 mm) deep shall be used.b) If the test fuels used are miscible with wa
33、ter, a fuel volume equivalent to a fuel layer 1-1/2inches (39 mm) deep shall be used.c) The amount of fuel in U.S. gallons (liters x 0.26) to be used for each test shall be calculatedusing the following formula:MAY 10, 2016 UL 63345 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
34、DISTRIBUTION WITHOUT PERMISSION FROM ULU.S. Gallons = 0.625xAxdWhere:A = Area in square feet (m2x 10.76) of fuel surfaced = Depth in inches (mm x 0.04) of fuel8.4.6 The resulting media blanket shall be spread evenly over and completely cover the liquid surface tothe depth specified in 5.1.1.8.5 Burn
35、back test8.5.1 The fuel inside the stovepipe is to be ignited and allowed to burn for 1 minute. The stovepipe is thento be slowly removed from the pan while the fuel continues to burn.8.5.2 When the stovepipe is removed, the media blanket shall:a) Restrict, for 5 minutes, the spread of fire to an ar
36、ea of not larger than 10 square feet (0.9m2); andb) Completely extinguish the fire within 10 minutes.Exception: The requirements of 8.5.2 (b) are not applicable if all installations are intended to be suppliedwith fire detection equipment to notify personnel of an active fire. The manufacturers inst
37、allationinstructions shall include a statement as indicated in 13.1 (h).8.5.3 Following the completion of the Burnback Test, any thermally decomposed media may be removedfrom the test pan and replaced with an equivalent amount of new media or covered over by redistributingmedia from elsewhere within
38、 the pan.8.6 Flash fire8.6.1 The flash fire test specified in 8.6.2 8.6.6 shall be conducted after the completion of the burnbacktest specified in 8.5.1 8.5.3.Exception: The flash fire is not required for test fuels with a heat of combustion less than that ofcommercial grade heptane.8.6.2 Approximat
39、ely 1/4 U.S. gallon (1 L) of the test fuel shall be evenly misted over the entire surface ofthe test pan from a height of no more than 2 feet (0.61 m) above the top surface of the media blanket.The fuel shall be misted using a hand operated pump sprayer.8.6.3 The cover is to be placed over the test
40、setup and left undisturbed for a period of 9 to 10 minutes.8.6.4 After the undisturbed duration the cover is to be removed and the steps described in 8.6.2 are to berepeated. The cover is to be replaced and left undisturbed for a period of 4 to 5 minutes.MAY 10, 2016UL 633458UL COPYRIGHTED MATERIAL
41、NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL8.6.5 After the undisturbed period the cover shall be removed and the vapors in the test pan shall beremotely ignited with an electronic ignition source. After ignition, the remaining ignition source materialsattached t
42、o the electrical supply wire shall be removed.8.6.6 When the vapors are ignited, the media blanket shall:a) Remain intact over the entire fuel surface; andb) Self-extinguish within 10 minutes.9 Chemical Compatibility Testing9.1 General9.1.1 When tested as described in 9.4.1, buoyant media samples th
43、at have been chemically exposed asdescribed in 9.3.1 9.3.3 shall comply with each of 9.1.1 (a) (c) when compared to as-receivedsamples.a) The required percent overfill determined in 9.4.1 (a) shall be determined for inclusion in themanufacturers installation instructions as indicated in 13.1 (a).b)
44、The buoyant media shall not exhibit an increase in mean density of more than 25 percent.c) Thermogravimetric analysis shall demonstrate that the thermal barrier performance of theproduct has not been diminished by exposure to the test fuels.9.2 Temperature cycling9.2.1 Prior to chemical exposure of
45、buoyant media samples, the samples shall be subjected to tencontiguous 16-hour temperature cycles between -35F (-37C) and 140F (60C).9.3 Chemical exposure9.3.1 Separate samples of the buoyant media shall be fully submerged in each of the chemicals indicatedin 9.3.1 (a) (e) for periods of 30 and 180
46、days. When evaluating a product for application on polarsolvent fuels, test fuels shall be in accordance with the polar solvent fuel groups specified in 7.1 (g), aswell as the following fuels:a) Diesel;b) Toluene;c) Iso-Octane;d) Ethanol; ande) Crude Oil.MAY 10, 2016 UL 63345 9UL COPYRIGHTED MATERIA
47、L NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL9.3.2 A liquid temperature of 72 5 F (22.2 2.8C) shall be maintained for the duration of the exposureperiod.9.3.3 Samples of the chemically exposed buoyant media shall be taken after each chemical exposureperiod. The
48、samples shall be tested in accordance with 9.4.1 within 72 hours of removal from the chemicalexposure.9.4 Post-exposure tests9.4.1 Buoyant media shall be taken from the chemically exposed samples and tested in accordance withthe following.a) The buoyancy of individual media shall be assessed by rein
49、troduction to the test fluids. Thereintroduced samples shall be submerged to the full depth of the jar ten (10) times using aplunger the width of the sample jar. After 30 minutes, the number of media that retain positivebuoyancy shall be recorded and compared to the total number of media in the sample. Theoutcome of this test is a required percent overfill, which shall be noted in the manufacturersinstallation instructions as indicated in 13.1 (b).b) The density of the buoyant media that retain positive buoyan
