1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 644 Container Assemblies for LP-GasUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE
2、R REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Container Assemblies for LP-Gas, UL 644 Ninth Edition, Dated June 6, 2014 Summary of Topics This ninth edition of UL 644 reects the rst time ANSI approval of the standard, as well as renumbering and changes to 1.2,
3、1.3, 5.2, 6.1, 6.12, 7.5, 17.1, and new 17.4. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated November 1, 2013 and February 14, 2014. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitt
4、ed in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for an
5、y purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar 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 h
6、as been advised of the possibility of such damage. In no event shall ULs liability for any damage ever 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
7、against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) 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
8、 those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective 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 p
9、receded by a SUPERSEDED REQUIREMENTS notice. JUNE 6, 2014 UL 644 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 6, 2014 UL 644 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION W
10、ITHOUT PERMISSION FROM UL JUNE 6, 2014 1 UL 644 Standard for Container Assemblies for LP-Gas First Edition May, 1959 Second Edition August, 1971 Third Edition June, 1972 Fourth Edition June, 1977 Fifth Edition January, 1982 Sixth Edition April, 1986 Seventh Edition December, 1994 Eighth Edition Febr
11、uary, 2000 Ninth Edition June 6, 2014 This ANSI/UL Standard for Safety consists of the Ninth Edition. The most recent designation of ANSI/UL 644 as an American National Standard (ANSI) occurred on June 6, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Pa
12、ge (front and back), or the Preface. The Department of Defense (DoD) has adopted UL 644 on February 10, 1976. The publication of revised pages or a new edition of this Standard will not invalidate the DoD adoption. Comments or proposals for revisions on any part of the Standard may be submitted to U
13、L 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 by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and a
14、ll copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 644-2014UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 6, 2014 CO
15、NTAINER ASSEMBLIES FOR LP-GAS - UL 644 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Components 4 3 Units of Measurement .5 4 Undated References 5 5 Glossary .5 CONSTRUCTION 6 Contai
16、ners .5 7 Protective Housings .8 8 Safety-Relief Valves .8 9 Excess-Flow Valves 12 10 Liquid-Level Gauging Devices 12 11 Filler Valves and Vapor-Return Valves 13 12 Service Line Shutoff Valves 13 13 Regulators .13 14 Multiple-Head Units .14 15 Pressure Gauges .14 MANUFACTURING AND PRODUCTION TESTS 1
17、6 General 14 MARKING 17 General 14 Appendix A Standards for ComponentsA1 JUNE 6, 2014 CONTAINER ASSEMBLIES FOR LP-GAS - UL 644 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover aboveground, un
18、derground, and interchangeable (aboveground or underground) stationary container assemblies for liqueed petroleum gases which include any material having a vapor pressure not exceeding that allowed for commercial propane composed predominately of the following hydrocarbons, either by themselves or a
19、s mixtures: propane, propylene, butane (normal butane or isobutane), and butylenes. These container assemblies are provided with tanks constructed under the appropriate provisions of the current edition of the Boiler and Pressure Vessel Code of the American Society of Mechanical Engineers (ASME). 1.
20、2 Container assemblies covered by these requirements are those using fuel storage tanks having a water capacity of 4000 gallons (15.14 m 3 ) or less and designed and used only for delivery of fuel in the gaseous phase, but they may also incorporate a liquid take-off in addition to a vapor take-off.
21、This standard does not cover liquid supply to systems or liquid withdrawal from these or any other containers. 1.3 Container assembly installations are intended to be made in accordance with the Liqueed Petroleum Gas Code (National Fire Protection Association); NFPA 58. They are not intended for use
22、 in chemical, petrochemical, petroleum, or utility power plants; nor pipeline or marine terminals; nor related storage facilities at such plants or terminals. 2 Components 2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that co
23、mponent. See Appendix A for a list of standards covering components generally used in the products covered by this standard. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the produ
24、ct covered by this standard, or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specic components are incomplete in construction features or restricted in performance capabilities. Suc
25、h components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. JUNE 6, 2014 CONTAINER ASSEMBLIES FOR LP-GAS - UL 644 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
26、DISTRIBUTION WITHOUT PERMISSION FROM UL 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this stand
27、ard shall be interpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 For the purpose of this standard the following denitions apply. 5.2 CONTAINER ASSEMBLY An assembly consisting of a certied ASME Code container provided with ttings for all tank openings including a l
28、ler valve, a safety-relief valve, a service-line shutoff valve, excess ow valves, a liquid-level gauging device, and a protective housing. It may include a pressure regulator or a liquid withdrawal valve. When necessary, a copper tubing pigtail is provided for making a connection between the outlet
29、of the service-line shutoff valve and the regulator. A vapor-return valve, a pressure gauge, and a copper tubing connector for making connection between the outlet of the regulator and the fuel service piping may be included in the assembly. Several or all of the parts may be incorporated in the ass
30、embly of a multiple-head unit. 5.3 INTERCHANGEABLE CONTAINER ASSEMBLY A container assembly conforming to the requirements for aboveground installation with respect to safety-relief valve capacity and lling density, and to all other requirements for aboveground and underground installation, so as to
31、permit its installation in either location without modication. CONSTRUCTION 6 Containers 6.1 These container assemblies are provided with tanks constructed under the appropriate provision of the current edition of ASME Boiler and Pressure Vessel Code. The minimum design pressure shall be in accordan
32、ce with Table 6.1. Exception: UG 125-136 of the ASME Code does not apply. See Safety-Relief Valves, Section 8. JUNE 6, 2014 CONTAINER ASSEMBLIES FOR LP-GAS - UL 644 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 6.1 Design pressure o
33、f containers Vapor pressure of gas at 100F (37.7C) up to: Minimum design pressure of container, psig (kPa) psig (kPa) 80 551 100 689 100 689 125 862 125 862 156 1076 150 1034 187 1289 175 1207 219 1510 215 1482 250 1724 6.2 A container having a water capacity of 125 gallons (0.47 m 3 ) or greater sh
34、all be provided with an opening for an actuated liquid withdrawal excess-ow valve which shall be no smaller than 3/4-inch nominal pipe size. See Table 6.2. Table 6.2 Dimensions of welded and seamless wrought steel pipe Size nominal, Outside diameter, Identication Wall thickness, Extra strong standar
35、d type Schedule no. inches inches (mm) inch (mm) 1/2 0.840 21.34 STD 40 0.109 2.77 XS 80 0.147 3.73 3/4 1.050 26.67 STD 40 0.113 2.87 XS 80 0.154 3.91 1 1.315 33.40 STD 40 0.133 3.38 XS 80 0.179 4.55 1-1/4 1.660 42.16 STD 40 0.140 3.56 XS 80 0.191 4.85 1-1/2 1.900 48.26 STD 40 0.145 3.68 XS 80 0.200
36、 5.08 2 2.375 60.33 STD 40 0.154 3.91 XS 80 0.218 5.54 2-1/2 2.875 73.03 STD 40 0.203 5.16 XS 80 0.276 7.01 NOTE The dimensions referred to in this table are taken from The Standard for Welded and Seamless Wrought Steel Pipe, ANSI/ASME B36.10M. 6.3 All openings in a container shall be safeguarded by
37、 internal valves, or positive shutoff valves and either automatic excess-ow valves, or back-pressure check valves, except for the following: a) Plugged openings, b) Safety-relief valve connections, c) Liquid-level gauge connections as specied, d) Pressure gauge connections as specied, e) Service-lin
38、e shutoff valve connections, as specied, JUNE 6, 2014 CONTAINER ASSEMBLIES FOR LP-GAS - UL 644 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL f) Multiple-head unit connections if the proper safeguards are incorporated at each opening in th
39、e head assembly, and g) Double backow check ller valves. 6.4 A container shall not be constructed with more than two plugged openings. Such openings shall be not larger than 2-inch nominal pipe size and shall be closed by steel pipe plugs before the container assembly is shipped. 6.5 An opening in a
40、 container for connection of a valve or other accessory, except for a bolt-on type of liquid-level gauge connection, shall be threaded in accordance with the Standard for Pipe Threads, General Purpose, ANSI/ASME B1.20.1. 6.6 Conformance to 6.5 may be provided by a joint of other design if equivalent
41、 in strength and resistance to leakage. 6.7 A riser pipe shall be equivalent in strength to Schedule 80 pipe (Table 6.2), and shall be welded directly to the container. 6.8 Each container shall be provided with lifting lugs which will support the empty weight of the container plus 5 percent liquid v
42、olume. 6.9 A container for aboveground or interchangeable installation shall be constructed with ferrous metal supports for mounting on a foundation. The bottom of such supports shall be not less than 2 inches (51 mm) nor more than 24 inches (610 mm) below the outside bottom of the container shell.
43、6.10 The supports shall be drilled or be otherwise arranged to permit anchoring by screws or bolts. 6.11 The supporting base or legs of a spherical aboveground container shall terminate on a diameter of not less than 50 percent of the container diameter. A cylindrical base shall permit ventilation b
44、eneath the container. Ventilation passages shall be equivalent to at least four equally spaced 1-inch (25.4-mm) diameter holes. 6.12 A container designed for underground or interchangeable installation and constructed of uncoated metal shall incorporate provisions for cathodic protection and shall b
45、e coated with a material recommended for the service that is applied in accordance with the coating manufacturers instructions. JUNE 6, 2014 CONTAINER ASSEMBLIES FOR LP-GAS - UL 644 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 7 Protecti
46、ve Housings 7.1 A container assembly shall be provided with a sheet-metal housing for protection of the valves, regulator, and other parts. The housing shall be secured to the container before shipment unless the accessories are protected from damage during transit by other means. 7.2 Sheet metal us
47、ed in construction of a housing for an underground or interchangeable container shall be equivalent in strength to 0.053 inch (1.35 mm) minimum thickness sheet steel for the body, and 0.067 inch (1.70 mm) minimum thickness for the cover. 7.3 Sheet metal used in the construction of a housing for an a
48、boveground container shall be equivalent in strength to 0.042 inch (1.07 mm) minimum thickness sheet metal. 7.4 A housing on an interchangeable and on an underground container shall be provided with a cover hinged to the body. A one-piece housing permitted on aboveground containers only shall be hin
49、ged in place. 7.5 A hinged housing or a housing cover shall be provided. 7.6 An underground or an interchangeable container housing cover shall be provided with ventilation openings, the area of such openings equaling or exceeding the combined discharge areas of the safety-relief valve and other vents which discharge their contents into the housing. 7.7 A housing for an aboveground or for an interchangeable container having a water capacity greater than 125 gallons (0.47 m 3 ) shall be d
