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1、FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Subject 1626 October 5, 2007 SUMMARY OF TOPICS The following changes in requirements are being proposed: 1. This Proposed New (Fourth) Edition of the Standard for Residential Sprinklers for Fire Protection Service includes the following p
2、roposals: a) Revision to Scope of Standard to Reference New Sprinkler Technology; b) Revisions to Bring Defi nitions in Closer Alignment With Other Standards, c) Additional Requirement for Design Parameters and Installation Instructions to Reference Whether Recessed or Concealed Sprinklers are Vente
3、d; d) Revisions To More Closely Align Text with UL 199, Clarify Requirements And Maintain Consistency With Existing Testing Practices; e) Sprinkler Assembly Load Measurement; f) Fitting Type for Horizontal Surface Water Distribution Test; g) Revision To Heptane Specifi cations; h) Revision To Operat
4、ion - Lodgement Test; i) Revision to Address Sprinklers Having a Pressure Rating Greater Than 175 psig; and j) Revisions to Address Dry-Type Residential Sprinklers and Residential Sprinklers Used in Dry Systems STP BALLOTS DUE: December 4, 2007 COMMENTS DUE: December 4, 2007 For your convenience in
5、review, proposed additions to existing requirements are shown underlined and proposed deletions are shown lined-out. 1. This Proposed New (Fourth) Edition of the Standard for Residential Sprinklers for Fire Protection Service includes the following proposals: a) Revision to Scope Of Standard To Refe
6、rence New Sprinkler Technology; b) Revisions to Bring Defi nitions in Closer Alignment With Other Standards, c) Additional Requirement for Design Parameters and Installation Instructions to Reference Whether Recessed or Concealed Sprinklers are Vented; d) Revisions To More Closely Align Text with UL
7、 199, Clarify Requirements And Maintain Consistency With Existing Testing Practices; e) Sprinkler Assembly Load Measurement; f) Fitting Type for Horizontal Surface Water Distribution Test; g) Revision To Heptane Specifi cations; h) Revision To Operation - Lodgement Test; i) Revision to Address Sprin
8、klers Having a Pressure Rating Greater Than 175 psig; and j) Revisions to Address Dry-Type Residential Sprinklers and Residential Sprinklers Used in Dry Systems RATIONALE Proposal submitted by: Kerry M. Bell, Underwriters Laboratories, Inc. The present Third Edition was issued on July 10, 2001. UL h
9、as developed a draft of a Fourth Edition that would replace the existing one. Below, in items a through j, the substantive changes, between the old and new editions, are described in detail. a) Revision to Scope of Standard to Reference New Sprinkler Technology Copyright Underwriters Laboratories In
10、c. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 00:27:39 MDTNo reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION In order to not restrict the develo
11、pment of new technology, NFPA currently permits the installation of special sprinklers intended for the protection of specifi c fi re hazards. UL proposes to revise the scope of this standard to indicate that special sprinklers can be investigated using fi re and other tests considered to be represe
12、ntative of the specifi c end use application. The proposed text is the same as currently referenced in Standard for Automatic Sprinklers for Fire-Protection Service, UL 199. See added paragraph 1.2 in the proposed new edition. b) Revisions to Bring Defi nitions in Closer Alignment With Other Standar
13、ds UL proposes to revise the defi nitions for certain sprinklers to bring them in closer alignment with existing defi nitions described in UL 199 and the Standard for the Installation of Sprinkler Systems, NFPA 13. See 5.2.1, 5.2.2, 5.2.3, 5.2.6 and 5.2.7. c) Additional Requirement for Design Parame
14、ters and Installation Instructions to Reference Whether Recessed or Concealed Sprinklers are Vented UL proposes to require additional information in the instructions regarding the venting characteristics of recessed and concealed sprinklers. The proposed new requirement complements the reference to
15、this information in 29.2.2 of the proposed new edition (38.2.2 in the Third Edition) which indicates that vented escutcheons are not intended for installation in positive pressure plenums or to have the venting provisions blocked. See 51.1 (which was 6.1 in the Third Edition). d) Revisions to More C
16、losely Align Text with UL 199, Clarify Requirements And Maintain Consistency With Existing Testing Practices UL proposes to update and revise text throughout the standard to closer align text with UL 199, clarify requirements and maintain consistency with existing testing practices and procedures. T
17、he following paragraphs and Figures incorporate changes from the previous edition: 1.1, 6.1, 8.1, 11.1, Section 12 heading, 14.1, 15.2, 16.1, 16.2, 18.2, 19.1, 19.2, 20.1, 20.2, 21.2, 23.3, 26.2, 27.2, 28.1, 28.2, 28.4-28.7, 29.1, 29.1.1, 29.1.4, 29.1.5, 29.2, 29.2.2, Figures 29.2 and 29.3, 29.2.3,
18、29.2.4, 29.2.5, 31.1, 31.2, 32.2, 34.1, 34.2, 35.1.1. 35.1.2, 35.1.4, 35.2.1, 35.3.1, 35.4.1, 36.1 39.4.4, 40.1, 40.2, 40.3, 40.4, 41.1-41.3, 41.5-41.7, Figure 42.2, 43.1.1, Figures 43.1 and 43.2, 44.2.3, 44.2.6, Figure 44.1, 45 (section heading), 45.1, 45.2, 46.2.4.1, 46.2.4.3, 46.3.5, 47.1, 49.1,
19、50.1, 50.7-50.9, 50.11, 51.4 and added Section 9. Also note that Section 33 in the Third Edition is being deleted since this test is described in 37.3 in the Fourth Edition. For your convenience, a Table of cross references is included below that shows the affected paragraphs in both the Third and p
20、roposed Fourth editions so that you can easily refer back and forth in your review if necessary. OCTOBER 5, 2007SUBJECT 1626-2- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 00:27:39 MDTNo
21、 reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Third Edition ReferenceProposed Fourth Edition Reference Revise 6.351.4 Revise 7.16.1 Delete 7.3(deleted in new edition) Revise 9.18.1 n/anew Section 9 - Pressure Rating
22、 Revise 10A.111.1 Revise Section Heading 11Section 12 Revise 13.114.1 Revise Section Heading 14.215.2 Revise 14.2.216.1 and 16.2 Revise 16.323.3 Revise 18.226.2 Revise 19.128.1 Revise 19.1.128.2 Revise 19.3, 19.4, 19.528.4, 28.5, 28.6, 28.7 Revise 20.1, 20.230.1, 30.2, Figure 30.1, added Table 30.1
23、Revise 21.221.2 Revise Section 22 headingSection 45 heading Revise 22.1, 22.245.1, 45.2 Revise 23.1, 23.231.1, 31.2 Revise Figure 25.242.2 Revise 26.1.1, and Figures 26.1 and 26.243.1.1, and Figures 43.1 and 43.2 Revise 27.2.2, 27.2.5 and Figure 27.144.2.3, 44.2.6, and Figure 44.1 Revise 28.2.4.2, 2
24、8.2.4.3, and 28.3.446.2.4.1, 46.2.4.3, 46.3.5 Revise 29.1.1 and 29.1.235.1.1, 35.1.2 N/A35.1.4 (new) Revise 29.2.1, 29.3.1, and 29.4.135.2.1, 35.3.1, and 35.4.1 Revise 30.136.1 Revise 31.1, 31.2, 31.3, and 31.440.1, 40.2, 40.3, and 40.4 Revise 32.1, 32.2, 32.3, 32.5, 32.6, and 32.741.1, 41.2, 41.3,
25、41.5, 41.6, and 41.7 Revise 32A.4.439.4.4 33 deleted SectionN/A Revise 34.232.2 Revise 35.1 and 35.220.1 and 20.2 Revise 35A.1 and 35A.219.1 and 19.2 Revise 36.218.2 Revise 38.1 (heading), 38.1.1, 38.1.4, and 38.1.529.1, 29.1.1, 29.1.4, and 29.1.5 Revise 38.2 (heading), 38.2.2, 38.2.3, 38.2.4, and 3
26、8.2.529.2, 29.2.2, 29.2.3, 29.2.4, 29.2.5, and added Figure 29.2 39.2 revised27.2 Revise 40.1 and 40.234.1 and 34.2 Revise 42.147.1 Revise 43A.149.1 Revise 44.150.1 Revise 44.7, 44.8, 44.9, and 44.10A50.7, 50.8, 50.9, and 50.11 e) Sprinkler Assembly Load Measurement Section 24 in the Third Edition d
27、escribes a prescriptive method for determining the assembly load of sprinklers. UL is proposing to revise this section (now Section 17 in the proposed new edition) to allow the use of alternative methods to determine the sprinkler assembly load since other measurement procedures and techniques may y
28、ield equivalent or more accurate results. OCTOBER 5, 2007SUBJECT 1626-3- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 00:27:39 MDTNo reproduction or networking permitted without license f
29、rom IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION f) Fitting Type for Horizontal Surface Water Distribution Test Currently, 26.2.1.3 in the Third Edition indicates that the horizontal surface water distribution tests are to be conducted using a reducing tee pipe fi tting. T
30、he fi re and vertical surface water distribution tests are typically conducted with the sprinkler installed into a bell reducer fi tting as permitted by the Standard. UL proposes to revise this paragraph (now 43.2.1.4 in the proposed new edition) to allow the fl exibility of installing the sprinkler
31、 in a bell reducer for the horizontal surface water distribution test. g) Revision To Heptane Specifi cations Currently, 28.2.3.2 and Table 28.2 in the Third Edition indicate that the heptane used during the fi re testing is to be commercial grade heptane. It has been determined by UL that the curre
32、nt specifi cations for heptane (referenced in that Table) need to be revised so that they are more aligned with actual industry specifi cations for standard and low aromatic versions of commercial grade heptane. UL proposes to revise initial boiling point, specifi c gravity, and Dry Point specifi ca
33、tions for commercial grade heptane used for the fi re test. The other characteristics formerly referenced in Table 28.2 in the Third Edition are proposed to be deleted since vendors no longer validate these characteristics and they are not considered necessary or critical for the fi re test specifi
34、cation. The specifi cations for heptane will now be found in the Glossary of the Fourth Edition as paragraph 5.1.4. h) Revision To Operation - Lodgement Test Currently, the Operation - Lodgement Test (20.2 in the Third Edition) is conducted with water supplied to the sprinkler from a single directio
35、n. Data has been provided to UL indicating that the performance of sprinklers during this test may be infl uenced by the direction of water feeding into a sprinkler fi tting. In consideration of this new information, UL is proposing to require that the Operation Lodgement Test be conducted using bot
36、h single- and double-feed water supply arrangements. See 30.2, Table 30.1, and Figure 30.1 in the proposed new edition. i) Revision to Address Sprinklers Having a Pressure Rating Greater Than 175 psig. Currently, UL 1626 addresses residential sprinklers with a pressure rating of 175 psig. Since ther
37、e is interest in residential sprinkler pressure ratings greater than 175 psig, UL is proposing revisions to include appropriate requirements for higher-pressure ratings. The proposed revisions are intended to include requirements similar to those currently included in UL 199 for high pressure rated
38、sprinklers. See 9.1, 21.1, 21.2, 22.1, Table 22.1 (New), 23.1, 23.3, 25.1, Table 25.1 (New), 25.3, 26.1, Table 26.1 (New), 26.2, 26.4, 30.1, Table 30.1, 40.4, 41.6, 41.7, 42.4, 43.2.1.1, 44.2.1, 45.1, 45.2, 46.3.6, 48.1 and Table 48.1. j) Revisions to Address Dry-Type Residential Sprinklers and Resi
39、dential Sprinklers Used in Dry Systems Currently, UL 1626 includes requirements for residential sprinklers used in wet systems. Since there is interest in the installation of dry residential sprinkler systems, UL is proposing revisions to include requirements for dry-type residential sprinklers as w
40、ell as wet sprinklers installed in dry sprinkler systems. The proposed requirements for dry-type residential sprinklers are similar to those currently applied to dry-type sprinklers referenced in UL 199. For residential sprinklers intended for use in dry systems, the fi re test is to be conducted wi
41、th the water discharged delayed 15 seconds from the time of sprinkler operation which is intended to simulate the maximum permitted water delivery time referenced in NFPA 13D-2007. See 5.2.4 (New), 6.2 (New), 6.6, 7.1, 11.1, 18.1, 20.1, 24 (New), 30.2, 30.3, 33.2, 38 (New), 42.3 (New), 43.2.1.2 (New
42、), 44.2.2 (New), 45.2, 46.2.4.1, 46.3.1 (New) and 51.3 (New) PROPOSAL OCTOBER 5, 2007SUBJECT 1626-4- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 10/17/2007 00:27:39 MDTNo reproduction or networking
43、 permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION INTRODUCTION 1 Scope 1.1 These requirements cover residential sprinklers intended for installation on sprinkler systems for fi re-protection service. Requirements for the installation and use of r
44、esidential sprinklers are included in the Standards for the Installation of Sprinkler Systems, NFPA 13, and Installation of Sprinkler Systems in One- and Two-Family Dwellings and Mobile Homes, NFPA 13D, and Residential Occupancies up to and Including Four Stories in Height Sprinkler Systems, NFPA 13
45、R. 1.2 The requirements in this standard are not intended to restrict the application of representative fi re and other tests for special sprinklers, as referenced in Standard for the Installation of Sprinkler Systems, NFPA 13, that are intended to provide protection for specifi c fi re hazards. 1.3
46、 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fi re or of electric shock or injury to persons shall be evaluated using appropriate additional component and en
47、d-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems confl ict with specifi c requirements or provisions of this standard does not comply with this standard. Revis
48、ion of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard. 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 compon
49、ent. 2.2 A component is not required to comply with a specifi c requirement that: a) Involves a feature or characteristic not required in the application of the component in the product 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 Specifi c components are incomp