1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAugust 18, 20101SUBJECT 2258OUTLINE OF INVESTIGATIONFORNONMETALLIC TANKS FOR OIL-BURNER FUELS AND OTHERCOMBUSTIBLE LIQUIDSISSUE NUMBER: 4August 18, 2010Summary of TopicsThis Issue No. 4 of the Ou
2、tline of Investigation for Nonmetallic Tanks forOil-Burner Fuels and Other Combustible Liquids, Subject 2258, is issuedto extend the future effective date of August 8, 2010 to August 9, 2011.This change applies to entire Outline.This issue becomes effective August 9, 2011. See the First Issue for th
3、ecurrent requirements until the effective date is met.COPYRIGHT 2010 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAUGUST 18, 2010SUBJECT 22582No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
4、ER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 Units of Measurement .63 Undated References 64 Components 65 Glossary .66 Tank Components and Tank Accessories 9CONSTRUCTION7 Size and Form 98 Materials 109 Primary Tanks .1110 Secondary Tanks .1111 Diked Tanks
5、.1112 Functional Tank Components 12TANK PERFORMANCE TESTS13 General 12NORMAL USE TESTS14 Tank Drop Test .1315 Tank Handle and Lift Lug Strength Test .1316 Pipe and Fitting Torque Test .1317 Pipe and Fitting Bending Test 1418 Tank Impact Test .1419 Tank Stability and Support Load Test .1520 Rain Test
6、 15ABNORMAL USE TESTS21 Tank Top Load Test 1722 Tank Stability Test 1723 Interstitial Communication Test .1724 Bouyancy Test .1825 Freeze/Thaw Cycle Test .1826 Proof of Design and Hydrostatic Load Tests .1827 Pool Fire Test 1928 Comparative Small Scale Fire Test .22MATERIALS COMPATIBILITY TESTS29 Ge
7、neral 2230 Permeation Test 2331 Material Property Tests 2432 Thermal Compatibility Test .2533 Fuel Compatibility Tests .25AUGUST 18, 2010 SUBJECT 2258 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL34 Fluids Compatibility Tests 2535 UV Compa
8、tibility Test .2536 Extreme Temperature Tests 2637 Nonmetallic Stress Cracking Test .2638 Metallic Stress Cracking Test 26MANUFACTURING AND PRODUCTION TESTS39 Leakage Test 27MARKINGS40 General Marking Information .2741 Engineering Markings .2841.1 All tanks 2841.2 Primary containment tanks 2941.3 Se
9、condary containment tanks 2941.4 Diked tanks 2941.5 Tank accessories 3042 Marking Methods .30INSTRUCTIONS43 General 30APPENDIX A REPRESENTATIVE COMBUSTIBLE LIQUIDS TEST FUEL MIXTURESA.1 Representative Aggressive Combustible Test Fuel Mixtures .A1AUGUST 18, 2010SUBJECT 22584UL COPYRIGHTED MATERIAL NO
10、T AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 ScopeSection 1 effective August 9, 20111.1 These requirements cover nonmetallic or composite primary, secondary and diked type atmosphericstorage tanks from 60 660 gallons (227 2500 L) intended primarily for
11、 the storage and supply ofheating fuel for oil burning equipment, or alternately for the storage of diesel fuels for compression ignitionengines and motor oils (new and used) for automotive service stations, in aboveground applications.1.2 Each tank type is permitted to be fabricated in a combinatio
12、n of various shapes (cylindrical,rectangular or obround), orientations (horizontal, vertical) and may have integral options (tank supports oraccessories) as covered in this Outline of Investigation.1.3 These shop built tanks are completely fabricated, inspected, and tested for leakage before shipmen
13、tfrom the factory as completely assembled vessels except for options intended for field assembly inaccordance with the manufacturers instructions.1.4 These tanks are intended for installation and use in accordance with the Standard for the Installationof Oil-Burning Equipment, ANSI/NFPA 31; the Flam
14、mable and Combustible Liquids Code, ANSI/NFPA 30;the Code for Fuel Dispensing Facilities and Repair Garages, NFPA 30A; and the International Fire Codepublished by the International Code Council.1.5 These requirements do not apply to steel tanks covered by the Standard for Steel Underground Tanksfor
15、Flammable and Combustible Liquids, UL 58; the Standard for Steel Tanks for Oil-Burner Fuels andOther Combustible Liquids, UL 80; or the Standard for Steel Aboveground Tanks for Flammable andCombustible Liquids, UL 142.1.6 These requirements do not apply to nonmetallic tanks covered by the Standard f
16、orGlass-Fiber-Reinforced Plastic Underground Storage Tanks for Petroleum Products, Alcohols, andAlcohol-Gasoline Mixtures, UL 1316; or the Standard for External Corrosion Protection Systems for SteelUnderground Storage Tanks, UL 1746.1.7 These requirements do not cover storage of waste oils or other
17、 combustible liquids with different fire,physical or material compatibility properties with respect to the intended liquids in 1.1, but do cover 100percent bio diesel and bio diesel blends up to 20 percent. These requirements do not cover storage offlammable liquids.1.8 These requirements do not cov
18、er special evaluations for resistance to hurricanes, tornadoes,earthquakes, floods, fires or other natural disasters; or resistance to vehicle impact.AUGUST 18, 2010 SUBJECT 2258 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2 Units of Meas
19、urementSection 2 effective August 9, 20112.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.3 Undated ReferencesSection 3 effective August 9, 20113.1 Any undated reference to a code or standard appearing in the requirements of t
20、his Outline ofInvestigation shall be interpreted as referring to the latest edition of that code or standard.4 ComponentsSection 4 effective August 9, 20114.1 Except as indicated in 4.2, a component of a product covered by this Outline of Investigation shallcomply with the requirements for that comp
21、onent.4.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in aproduct covered by this Outline of Investigation, orb) Is superseded by a requirement in this Outline of Investigation.4.3 A c
22、omponent shall be used in accordance with its rating established for the intended conditions ofuse.4.4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as certain temperature
23、s notexceeding specified limits, and shall be used only under those specific conditions.5 GlossarySection 5 effective August 9, 20115.1 For the purposes of this Outline, the following definitions apply.5.2 ABOVEGROUND TANK (also known as ABOVEGROUND STORAGE TANK or AST) A storagetank that is intende
24、d for installation above grade, at grade or below grade without backfill.5.3 ATMOSPHERIC TANK A storage tank that has been designed to operate at pressures fromatmospheric through a gauge pressure of 1.0 psig (6.9 kPa) measured at the top of the tank.5.4 BIO DIESEL General description of various Cla
25、ss II to IIIB range of long chain fatty acid esterfuels complying with ASTM D6751 processed from vegetable oils or animal fats in pure form (B100).Bio diesel may also be blended with heating fuels or diesel fuels (B1-B99) denoting the percent volumeof bio diesel in the mix.5.5 DIESEL FUELS General d
26、escription of various Class II petroleum distillate grades complyingwith ASTM D975 including No. 1 and No. 2 Diesel Fuel (also known as on-road diesel, including lowsulfur diesel, ultra low sulfur diesel and bio diesel blends) typically intended for powering compressionignition engines.AUGUST 18, 20
27、10SUBJECT 22586UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.6 DIKE A single wall construction forming a bottom and high sides with open or closed topintended to provide integral support and secondary containment of an aboveground tank(s)
28、but notcapable of being pressurized for leak testing. Dike types include combinations of rectangular orcylindrical shapes or horizontal or vertical orientations. Open top dike constructions do not have coversto prevent precipitation or debris from entering the dike area. Closed top dike construction
29、s have coversto resist precipitation or debris from entering the dike area.5.7 DIKED PRIMARY TANK An aboveground primary tank within an open or closed dike intended toprovide at least 110 percent containment capacity of the primary tank(s) and spill containment.5.8 DIKED SECONDARY TANK An abovegroun
30、d secondary tank within an open or closed dikeintended to provide at least 110 percent containment capacity of the primary tank(s) and spillcontainment.5.9 FIRE JACKET An external material enclosing the primary tank, secondary tank or dike tankwhich is intended to provide protection from fire, physi
31、cal damage, or both.5.10 HEATING FUELS General description of various Class II petroleum distillate grades complyingwith ASTM D395 or ASTM D3699, including No. 1 and No. 2 Fuel Oils or K1 Kerosene (also known asoil burner fuel, including low sulfur distillates and bio diesel blends), typically inten
32、ded for use in oilburning equipment.5.11 INTERSTITIAL SPACE The volume between two tank walls that is capable of communicatingfluid from a leak in the primary tank to a collection point for purposes of monitoring and venting.5.12 LOW SULFUR DIESELS Diesel fuels with additional processing to reduce t
33、he sulfur content 500 ppm (low sulfur diesel) or 15 ppm (ultra low sulfur diesel).5.13 MOTOR OILS General description of various Class III petroleum distillate or synthetic gradesincluding lube oils, hydraulic oils or transmission oils typically used as lubricating, cooling, or workingfluids in moto
34、r vehicle applications.5.14 NONMETALLIC TANK (also known as TANK SYSTEM) A storage tank that is constructed of anonmetallic primary tank and optional fire jacket, metallic secondary or dike, or nonmetallic secondaryor dike.5.15 PERFORMANCE TESTS A complete evaluation conducted on a limited quantity
35、ofrepresentative “worst case” tanks intended to verify compliance with all applicable performancerequirements in a Standard. Performance tests are typically destructive.5.16 PRIMARY CONTAINMENT The ability of an enclosed design or construction to contain a liquidwhile in normal use without leakage.5
36、.17 PRIMARY CONTAINMENT TANK (also known as PRIMARY TANK or SINGLE WALL TANK) Asingle wall tank construction that provides primary containment. Primary containment tank types includecylindrical, rectangular or obround shapes and vertical or horizontal orientations.5.18 PRODUCTION TESTS A limited eva
37、luation conducted by the tank manufacturer on each tankafter complete assembly but prior to shipping intended to verify compliance with critical productionrequirements in a Standard, such as leakage. Production tests are not destructive.5.19 RELIEF DEVICE A mechanical or electrical device which auto
38、matically reduces the risk of overpressure of any part of the tank system.AUGUST 18, 2010 SUBJECT 2258 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.20 SECONDARY CONTAINMENT The ability of a design or construction to contain a liquid to a
39、minimum of 300 degrees (for cylindricals and obrounds), 95 percent height (for rectangulars andverticals), or 110 percent primary capacity (for dikes) only in abnormal use (from primary containmentleakage or rupture) for short periods without leakage.5.21 SECONDARY CONTAINMENT TANK (also known as SE
40、CONDARY TANK or DOUBLE WALLTANK) A double wall tank construction with interstitial space that provides secondary containment thatis capable of being pressurized for leak testing. Secondary containment tank types include cylindrical,rectangular or obround shapes, and vertical or horizontal orientatio
41、ns.5.22 STORAGE TANK (also known as TANK) A vessel having a liquid capacity of at least 60 gal(230 L), is intended for fixed installation, and is not used for processing.5.23 SUPPLY CONNECTION A storage tank top or bottom opening that is intended to provide ameans to supply fuel to oil burning equip
42、ment or oil to a dispensing device by gravity or suction. Bottomconnections also provide a means to automatically drain water from the tank.5.24 TANK ACCESSORY Optional devices or components of an aboveground tank intended toprovide a specific function, such as venting, heating, load bearing, or spe
43、cial containment. Tankaccessories are either integrally connected or field assembled to the tank and may be emergency vents,hot wells, lift lugs, spill containers or other types.5.25 TANK ORIENTATIONS General description of the position of an aboveground tank with respectto stability. Horizontal tan
44、ks typically are longer and wider than high. Vertical tanks typically are higherthan wide.5.26 TANK SHAPES General description of the geometry of an aboveground tank. Cylindrical tanksare tubes formed with formed shells and equivalent circular heads. Rectangular tanks are boxes formedwith flat right
45、 angled sides. Obround tanks are cylindrical tanks with flat portions of the shell and headon 2 opposing sides.5.27 TANK SUPPORT Optional structural members of an aboveground tank intended to bear theweight of, raise above grade and/or stabilize the tank and its contents. Tank supports are integrall
46、yconnected to the tank and may be saddle, leg, flat, skid or other types.5.28 USED OILS General description of oils such as those drained from motor vehicles or cookingappliances after use that do not contain water, gas or other contaminants that change the oil Class ormay adversely affect the stora
47、ge tank.5.29 VENT OPENING A storage tank top opening that is intended to provide both normal venting(equalizing pressure from fill, withdraw or atmospheric changes typically up to 1.0 psig) and emergencyventing (relief of excessive pressure from external fire exposure typically not to exceed 2.5 psi
48、g).5.30 WASTE OIL General description of oils that have been drained from motor vehicles or cookingappliances after use that contain some amounts of water, gasoline, diesel, or other contaminants thatchange the oil Class or may adversely affect the storage tank.AUGUST 18, 2010SUBJECT 22588UL COPYRIG
49、HTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL6 Tank Components and Tank AccessoriesSection 6 effective August 9, 20116.1 The following tank components may be provided as either an attached part of a complete tank, orpacked with a tank for assembly per the manufacturers instructions at the installation site. When provided,these components shall comply with all applicable requirements of the Standards identified below:a) Fuel Filters or Oil Deairators per the Standard for
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