1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 443 Steel Auxiliary Tanks for Oil-Burner FuelUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED
2、FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Steel Auxiliary Tanks for Oil-Burner Fuel, UL 443 Sixth Edition, Dated October 25, 2006 Summary of Topics This revision of ANSI/UL 443 is being issued to reaffirm approval as an American National Standard.
3、 No changes in requirements are involved. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating
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6、lar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage eve
7、r exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees
8、) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effec
9、tive dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. MARCH 8, 2013 UL 443 tr1UL COPYRIGHTED MATERIAL NOT AUTH
10、ORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 8, 2013 UL 443 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 25, 2006 (Title Page Reprinted: March 8, 2013) 1 UL 443 Standard
11、for Steel Auxiliary Tanks for Oil-Burner Fuel The First edition was titled Auxiliary Tanks for Oil-Burners . First Edition May, 1957 Second Edition September, 1973 Third Edition December, 1979 Fourth Edition November, 1990 Fifth Edition October, 1995 Sixth Edition October 25, 2006 This ANSI/UL Stand
12、ard for Safety consists of the Sixth Edition including revisions through March 8, 2013. The most recent designation of ANSI/UL 443 as a Reaffirmed American National Standard (ANS) occurred on March 7, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page,
13、or effective date information. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted
14、 by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 443-2008 (R201
15、3)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FR
16、OM UL CONTENTS INTRODUCTION 1 Scope .4 2 General 4 2.1 Components .4 2.2 Units of measurement .5 2.3 Undated references .5 CONSTRUCTION 3 General 5 4 Materials .5 5 Shell Seams 6 6 Heads and Head Joints 8 7 Pipe Connections 10 8 Protection of Openings .13 9 Painting .13 PROOF OF DESIGN TEST 10 Gener
17、al 13 11 Apparatus 13 12 Method 13 MANUFACTURING AND PRODUCTION TESTS 13 General 14 MARKING 14 General 15 OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Sco
18、pe 1.1 These requirements cover the design and construction of welded steel tanks of the atmospheric type intended for the auxiliary storage and supply of fuel oil for oil burners. They are for use in the supply piping between a burner and its main fuel supply tank. 1.2 These tanks are intended for
19、installation and use in accordance with the Standard of the National Fire Protection Association for the Installation of Oil-Burning Equipment, NFPA No. 31. 1.3 An auxiliary tank equipped with a mechanism for control of a pump or otherwise controlling liquid level or for preventing the spillage of f
20、uel oil from a tank not required to be vented to the outside of a building is to be judged under the Standard for Pumps for Oil-Burning Appliances, UL 343. 1.4 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements
21、 in this standard, and that involves a risk of re, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the acceptable level of safety as originally anticipated by the intent of this standa
22、rd. A product whose features, characteristics, components, materials, or systems conict with specic requirements or provisions of this standard cannot be judged to comply with this standard. Where considered appropriate, revision of requirements shall be proposed and adopted in conformance with the
23、methods employed for development, revision, and implementation of this standard. 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply with the requirements for that component. 2.1.2 A component need not comply with a specic requi
24、rement that: a) Involves a feature or characteristic not needed in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.1.3 A component shall be used in accordance with its recognized rating established for the intended co
25、nditions of use. 2.1.4 Specic components are recognized as being incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperature not exceeding specied limits, and shall be used only under t
26、hose specic conditions for which they have been recognized. OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.2 Units of measurement 2.2.1 When a value for measurement is f
27、ollowed by a value in other units in parentheses, the rst stated value is the requirement. 2.3 Undated references 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRU
28、CTION 3 General 3.1 A tank of this class shall be cylindrical or of another form which has been demonstrated by test to possess strength and tightness as required by 10.2. 3.2 An auxiliary tank shall not exceed 60 gallons (227 liters) individual capacity. 4 Materials 4.1 A tank shall be constructed
29、of commercial grade as noted in 4.2. Only new material shall be used. 4.2 Carbon steel shall be in accordance with (a), (b) or both: a) Comply with the Specication for Steel, Carbon (0.15 Maximum Percent), Hot-Rolled Sheet and Strip (Commercial Quality), ASTM A569M-91a; or Specication for Steel, She
30、et and Strip, Heavy Thickness Coils, Carbon, Hot-Rolled, ASTM A635M-93. b) Have a carbon content of 0.25 percent or less, or a carbon equivalency of 0.53 percent or less, and mechanical strength and welding characteristics at least equivalent to one of the steels specied in (a). Table 4.1 Thickness
31、of steel Capacity Manufacturers standard gage no. Galvanized sheet gage no. U.S. gallons (Liters) Up to 10 Up to 37.9 18 20 10.1 to 60 38.2 to 227 16 16 4.3 The thickness of the steel is to be determined by ve micrometer readings spaced equally along the edge of the full piece as rolled. Thickness i
32、s to be determined on the sheet not less than 3/8 inch (9.5 mm) for a cut edge and not less than 3/4 inch (19.1 mm) from a mill edge. 4.4 The thickness of metal as measured in accordance with 4.3 shall be not less than the required minimum thickness value given in Table 4.2 or 4.3. OCTOBER 25, 2006
33、STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 4.2 Nominal and minimum thickness for uncoated sheet steel Manufacturers standard gage no. Nominal thickness, Minimum thickness, Inches
34、 mm Inches mm 16 0.060 1.52 0.053 1.34 18 0.048 1.22 0.042 1.07 Table 4.3 Nominal and minimum thickness for galvanized sheet steel Galvanized Sheet Gage No. Nominal Thickness, Minimum Thickness, Inches mm Inches mm 16 0.064 1.63 0.056 1.42 20 0.040 1.02 0.034 0.86 5 Shell Seams 5.1 Shell seams shall
35、 be one of the forms shown by Figure 5.1. This is generated text for gtxt. OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 5.1 Shell seams B Overlap 1/2 inch (12.7 m
36、m) minimum. C Continuous weld. CF All lap welds shall be continuous full llet welds T Tack weld 1-inch spots not over 12 inches (305 mm) apart. OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT
37、 PERMISSION FROM UL 6 Heads and Head Joints 6.1 Conventional designs of heads and forms of joints which have been demonstrated by tests as complying with the requirements for strength and tightness are illustrated by Figure 6.1. Tanks employing these forms of construction are not exempt from the tes
38、t for determining strength of assembly specied in 10.1 and 10.2. They are included herein only as a reference to assist the manufacturer in the construction to be employed in a design. This is generated text for gtxt. OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 8UL COPYRIGHTE
39、D MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 6.1 Heads and head joints C Continuous weld. CF Shall be continuous full llet welds. F Not less than 1/2 inch (12.7 mm). OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 9UL COPYRI
40、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7 Pipe Connections 7.1 Pipe connections shall be supplied by welding threaded anges to the tank. Conventional types of pipe connections are illustrated in Figure 7.1. They shall be of steel and the mini
41、mum length of the thread shall conform to the values shown in Table 7.1. This is generated text for gtxt. OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 10UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 7.1 Top pi
42、pe connections CF Continuous full llet weld. O Minimum length of thread (see Table 7.1). OCTOBER 25, 2006 STEEL AUXILIARY TANKS FOR OIL-BURNER FUEL - UL 443 11UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 7.1 Pipe connections Nominal
43、 pipe size, Thickness of ange section of pressed-steel ttings Minimum length of thread, Minimum thickness, inches Inches mm Gage no. Inches mm 1/2 11/32 8.7 10 0.123 3.12 3/4 11/32 8.7 10 0.123 3.12 1 7/16 11.1 10 0.123 3.12 1-1/4 7/16 11.1 12 0.093 2.36 1-1/2 7/16 11.1 12 0.093 2.36 2 7/16 11.1 12
44、0.093 2.36 2-1/2 7/8 22.2 7 0.167 4.24 7.2 Pressed-steel pipe-connecting ttings shall be installed with the hub section on the inside of the tank only as shown by Details 62 and 72 of Figure 7.1. The minimum thickness of the ange section shall be as specied in Table 7.1. 7.3 Pipe threads shall be in
45、 accordance with the Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1-1983(R1992). 7.4 Not less than three connections shall be provided in an auxiliary tank not equipped with an independently operated manual-reset type high-oil level switch or device to prevent the further suppl
46、y of oil to the tank when such level has been reached. These threaded openings are to provide connections for burner supply, tank supply, and overow to supply tank. 7.5 An auxiliary tank of 10 gallon (37.9 liters) capacity or less, when equipped with an independently operated manual-reset type high-
47、oil level switch or device to prevent the further supply of oil to the tank when an unsafe level is reached shall be provided with not more than two threaded openings for burner and for tank supply, respectively. This requirement applies to a tank intended to be vented into the adjoining space. No p
48、rovision for an overow connection to the supply tank shall be required. 7.6 An auxiliary tank of more than 10 gallon (37.9 liters) capacity shall be vapor and liquid tight and shall have a pipe threaded opening for the connection of a vent line intended for termination outside of the building. 7.7 A
49、n opening for a vent line shall be 1-1/4 inch nominal pipe size. An overow opening shall be one pipe size larger than the tank supply opening. All other openings shall be at least 1/2 inch nominal pipe size. The burner supply opening shall be provided in the bottom of the tank and when this location is in the shell, the center of the opening shall be located not more than 3 inches (76 mm) from the end of the shell. Such an opening shall be without internal projections t
