1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 852 Metallic Sprinkler Pipe for Fire Protection ServiceUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT A
2、UTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Metallic Sprinkler Pipe for Fire Protection Service, UL 852 Second Edition, Dated October 1, 2008 Summary of Topics This revision was issued to reaffirm approval of UL 852 as an American National
3、 Standard. No changes in requirements are involved. The requirements are substantially in accordance with Proposal(s) on this subject dated September 19, 2014. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Chang
4、es in requirements are marked with a vertical line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. All rights reserved. No part of this publication may be reproduced, stored in a retrieval sys
5、tem, or transmitted 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 merchantabilit
6、y or tness for any 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
7、 representative has 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 h
8、armless from and 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 e
9、ffect, except for 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 St
10、andard, and are preceded by a SUPERSEDED REQUIREMENTS notice. NOVEMBER 17, 2014 UL 852 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 17, 2014 UL 852 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REP
11、RODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 1, 2008 (Title Page Reprinted: November 17, 2014) 1 UL 852 Standard for Metallic Sprinkler Pipe for Fire Protection Service First Edition July, 2005 Second Edition October 1, 2008 This ANSI/UL Standard for Safety consists of the Second Edi
12、tion including revisions through November 17, 2014. The most recent designation of ANSI/UL 852 as a Reaffirmed American National Standard (ANS) occurred on November 17, 2014. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. C
13、omments 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 by UL. Neither a printed nor el
14、ectronic 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 2014 UNDERWRITERS LABORATORIES INC. ANSI/UL 852-2010 (R2014)UL COPYRIGHTED MATERIAL NOT AU
15、THORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 1, 2008 METALLIC SPRINKLER PIPE FOR FIRE PROTECTION SERVICE - UL 852 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUC
16、TION 1 Scope .4 2 Components 4 3 Units of Measurement .5 4 Undated References 5 5 Glossary .5 CONSTRUCTION 6 General 6 7 Sizes 6 8 Threaded Ends .6 9 Pressure Rating 6 10 Materials 6 PERFORMANCE 11 General .7 12 Bending Moment Tests .7 13 Leakage Test 9 14 Hydrostatic Test .9 15 Vibration Test .9 16
17、 Fire Test .10 17 Materials Test 15 18 Tensile Test 15 19 Corrosion Resistance Ratio for Steel Pipe .15 MANUFACTURING AND PRODUCTION TESTS 20 Hydrostatic Test 16 MARKINGS 21 General 16 APPENDIX A Determination of CRR for Steel Pipe OCTOBER 1, 2008 METALLIC SPRINKLER PIPE FOR FIRE PROTECTION SERVICE
18、- UL 852 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover metallic pipe intended for use in water based re protection systems for water distribution or valve trim applications. These pipes ma
19、y be used in re protection systems when installed in accordance with the following Standards: a) Standard for Installation of Sprinkler Systems, NFPA 13; b) Standard for Installation of Sprinkler Systems in Residential Occupancies up to Four Stories in Height, NFPA 13R; c) Standard for Installation
20、of Sprinkler Systems in One- and Two- Family Dwellings and Manufactured Homes, NFPA 13D; d) Standard for Installation of Standpipe, Private Hydrants, and Hose Systems, NFPA 14; e) Standard for Water Spray Fixed Systems, NFPA 15; f) Standard for Installation of Foam-Water Spray Systems, NFPA 16; and
21、g) Standard on Water Mist Fire Protection Systems, NFPA 750. 1.2 Pipe is categorized by size, pressure rating, end conguration, (threaded or unthreaded) and wall thickness designation. Steel pipe is also categorized by the Corrosion Resistance Ratio (CRR). 2 Components 2.1 Except as indicated in 2.2
22、, a component of a product covered by this standard shall comply with the requirements for that component. 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 product covered by this
23、 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. Such components are i
24、ntended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. OCTOBER 1, 2008 METALLIC SPRINKLER PIPE FOR FIRE PROTECTION SERVICE - UL 852 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
25、N OR 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
26、standard 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 CORROSION RESISTANCE RATIO (CRR) A value used to compare the corrosion resistance of black steel pipe that is uncoated or unpl
27、ated to that of Schedule 40 steel pipe is determined by the following formula: C R R=( X/X 40 ) 3 Where: X = Thickness of steel pipe measured either under the rst exposed thread for threaded pipe or at the thinnest wall section for unthreaded pipe. X 40 = Thickness of Schedule 40 pipe under the rst
28、exposed thread. The rst exposed thread is the minimum pipe thickness exposed to both interior and exterior corrosion and occurs at the threaded joint assembly at a line dened by the thread width, just before the pipe engages the tting. 5.2 revised October 1, 2008 5.3 NPS (NOMINAL PIPE SIZE) A dimens
29、ionless designator for pipe sizes dened in standards including ASTM A53, ASTM A135 and ASTM A795 used to replace terms such as Nominal Diameter and Nominal Size . 5.3 revised October 1, 2008 OCTOBER 1, 2008 METALLIC SPRINKLER PIPE FOR FIRE PROTECTION SERVICE - UL 852 5UL COPYRIGHTED MATERIAL NOT AUT
30、HORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 6 General 6.1 Pipe shall be constructed in a manner that permits joining sections of pipe by welding, brazing, or soldering as appropriate or with the use of ttings specied by the pipe manufacturer. The ends of
31、the pipe are permitted to be plain end, threaded, or grooved. 7 Sizes 7.1 Pipe shall be nominal 1/2-inch NPS or larger. 8 Threaded Ends 8.1 Where steel pipe is intended to be threaded, threads shall comply with the Standard for Pipe Threads, General Purpose (Inch), ANSI/ASME B1.20.1. Exception: Stee
32、l pipe intended for use in installations where ttings incorporate pipe threads other than NPT type threads, shall be permitted to be provided with pipe threads complying with other nationally or internationally recognized pipe thread standard compatible with those ttings. 9 Pressure Rating 9.1 Pipe
33、shall be constructed for a minimum rated pressure of 175 psig (1206 kPa). 10 Materials 10.1 The pipe shall comply with the dimensional, chemical, and physical properties of the applicable ASTM Standards or other nationally or internationally recognized pipe standards. Exception: If the pipe is produ
34、ced to specications beyond the scope of ASTM Standards, or other nationally or internationally recognized standards, the pipe shall conform to specications established by the manufacturer. 10.2 Steel pipe shall be made of steel material having corrosion resistance properties at least equivalent to S
35、chedule 40 black steel pipe made in accordance with Standard Specication for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use, ASTM A795, or Standard Specication for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless, ASTM A53 or o
36、r Standard Specication for Electric-Resistance-Welded Steel Pipe, ASTM A 135/A 135M. 10.2 revised October 1, 2008 OCTOBER 1, 2008 METALLIC SPRINKLER PIPE FOR FIRE PROTECTION SERVICE - UL 852 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL P
37、ERFORMANCE 11 General 11.1 To determine compliance with these requirements, pipe shall be subjected to the performance tests described in Sections 12 18, and specied in Table 12.1. 11.2 The number of samples required for investigation varies due to pipe sizes, material, and application. The number o
38、f samples required for examination and test are to be determined following a review of detailed drawings, examination of a preliminary sample, or both. 12 Bending Moment Tests 12.1 Sample pipe and joint assembly shall not leak or rupture when subjected to the specied bending moment. During the tests
39、, the assembly is to be pressurized to the rated pressure. 12.2 Sample pipe in each size is to be assembled with a joint representative of the intended application at the center of two lengths of pipe each measuring at least 12 inches (305 mm). With the assembly supported at points located on either
40、 side of the center of the joint, a gradually increasing force is to be applied to the center of the coupling until the required bending moment is achieved. See Table 12.1 and Figure 12.1. Table 12.1 Required bending moment for steel pipe NPS Pipe schedule 51 03 04 0 LbfFt (Nm) LbfFt (Nm) LbfFt (Nm)
41、 LbfFt (Nm) 1 195 (264) 260 (353) 300 (407) 1-1/4 274 (371) 362 (491) 420 (569) 1-1/2 527 (715) 684 (927) 810 (1098) 2 747 (1013) 950 (1288) 1150 (1559) 2-1/2 1119 (1517) 1326 (1798) 1770 (2400) 3 1533 (2078) 1786 (2421) 2426 (3289) 3-1/2 1905 (2583) 2200 (2983) 3013 (4085) 4 2318 (3143) 2650 (3593)
42、 3645 (4942) 5 3620 (4908) 3892 (5277) 5238 (7102) 6 4847 (6572) 5180 (7023) 7085 (9606) 8 7640 (10,358) 9018 (12,227) 10,541 (14,292) 11,304 (15,326) 10 11,836 (16,047) 13,006 (17,634) 15,548 (21,080) 16,785 (22,757) 12 21,038 (28,524) 22,950 (31,116) 14 25,718 (34,869) 27,450 (37,217) 16 31,883 (4
43、3,228) 35,843 (48,597) This is generated text for gtxt. OCTOBER 1, 2008 METALLIC SPRINKLER PIPE FOR FIRE PROTECTION SERVICE - UL 852 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 12.3 The required bending moment is calculated based on twi
44、ce the weight of water lled pipe over twice the maximum distance between pipe supports specied in the Standard for Installation of Sprinkler Systems, ANSI/NFPA 13. The required bending moment for pipe not specied in Table 12.1 is to be calculated according to the following formula: Where: M is the r
45、equired bending moment (lbfft); w is the running weight of water lled pipe (lbf/ft); and L is two times l, maximum hanger spacing (ft). Figure 12.1 Bending moment test OCTOBER 1, 2008 METALLIC SPRINKLER PIPE FOR FIRE PROTECTION SERVICE - UL 852 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REP
46、RODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 13 Leakage Test 13.1 A pipe assembly shall withstand for 1 minute, without leakage, an internal hydrostatic pressure of two times its rated pressure. No leakage of the pipe or joint assembly shall occur as the pressure is increased to the test pre
47、ssure. 13.2 Leakage tests are to be conducted on pipe assembled as specied in 12.2. The pipe ends of the test assembly are to be closed to provide for the assembly to be pressurized. The pressure is to be increased to twice the rated pressure and held for 1 minute. 14 Hydrostatic Test 14.1 A pipe as
48、sembly shall be capable of withstanding, for 1 minute without rupture, a test pressure equal to a multiple of the rated pressure as shown in Table 14.1. Table 14.1 Hydrostatic test pressures NPS Multiple of rated pressure 6 and smaller 5X Greater than81 0 4 X Greater than 10 3X 14.2 Hydrostatic test
49、s are to be conducted on pipe assemblies as specied in 13.2 and with the pressures specied in Table 14.1. 15 Vibration Test 15.1 A pipe assembly shall withstand the effects of vibration as specied in 15.3 without physical damage that affects the performance characteristics of the pipe as demonstrated by compliance with the Leakage Test, Section 13. 15.1 revised July 26, 2010 15.2 For each test, two lengths of sample pipe at least 14 inches in l
