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1、Subject 96 TO: SUBJECT: Underwriters Laboratories Inc. (UL) 333 Pfingsten Road Northbrook, IL 60062-2096 February 28, 2002 Standards Technical Panel (STP) for Lightning Protection Components, 96; Subscribers to UL?s Standards Service for Lightning Protection Components; Request for Comments on Propo
2、sed Requirements for the Proposed Fifth Edition of the Standard for Lightning Protection Components, UL 96; PROPOSED EFFECTIVE DATES INSTRUCTIONS STP Members: If you are a voting member of the STP, complete the attached ballot with your vote on the standard or proposals. Please note that all negativ
3、e ballots must be accompanied by supporting written reasons and, where possible, proposals for a solution to the problem raised. Impact statements and effective date information are not subject to letter ballot. Therefore, comments regarding impact statements and effective dates may be made and shou
4、ld be sent to the STP Secretary separate from the letter ballot. Subscribers and other interested parties: If you are a subscriber or other interested party, you are requested to send comments on the proposed requirements, impact statements, and proposed effective dates to the STP Secretary. The STP
5、 member ballot should not be used to submit your comments. Comments should be made in writing and may be sent by fax to (919) 547-6177 or by mail to the attention of Caren Helms at UL?s Research Triangle Park Office. Comments may also be sent via e-mail to . Please reference all correspondence to Su
6、bject 96. Note all comments received are public and may be circulated to others. If you respond by fax or e-mail, please include your full name and company name and address to ensure a reply. Unless specifically requested to do so, UL will not acknowledge comments indicating concurrence with these p
7、roposals. STP BALLOTS AND ALL COMMENTS DUE: APRIL 25,2002 SUMMARY OF TOPICS This bulletin proposes the Fifth Edition of the Standard for Lightning Protection Components, UL 96. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing,
8、 Bernie Not for Resale, 04/02/2007 01:34:19 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 96 -2- FEBRUARY 28,2002 APPENDICES Attached as Appendix A for your review and comment is the proposed fifth edition for UL 96. Attached as Appendix B and Appendix C are the S
9、TP membership roster and the STP ballot, respectively. Questions regarding interpretation of requirements should be directed to the responsible UL Staff. Please see Appendix D of this bulletin regarding designated responsibility for the subject product category. Please note that proposed requirement
10、s are of a tentative and early nature and are for review and comment only. Current requirements are to be used to judge a product until these requirements are published in final form. PRODUCTSANDINDUSTRIESAFFECTED BYTHE PROPOSAL UL requests your assistance in identifying other products or industries
11、 that might be affected by the requirements contained in this bulletin. UL suggests that all suppliers or customers for these products and industries be made aware of these requirements prior to their proposed effective date. Also, please forward your suggestions to UL so that these products and ind
12、ustries may be identified in future bu I let ins. RATIONALE These proposed revisions are editorial in nature and are intended to clarify the intent of the requirement and to establish the same wording for requirements that are also included in other UL standards. These revisions include correcting t
13、ypographical errors, clarifying wording, and renumbering. IMPACT If the proposed Fifth Edition is adopted, no review of currently Listed lightning protection components would be required as they already comply with the proposed requirements. UL proposes that the requirements become effective upon pu
14、blication. UNDERWRITERS LABORATORIES INC. REVIEWED BY: CAREN HELMS Secretary for STP 96 Standards Department phone: (91 9) 549-1 762 fax: (919) 547-6177 e-mail: http:/ GERALD KOPSTEIN Chair for STP 96 Conformity Assessment Services Department 301 8XNBK phone: (847) 272-8800 SR: SAB bul-96.5-2001080
15、3 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 01:34:19 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 96 -Al- FEBRUARY 28,2002 APPENDIX A PROPOSED FIFT
16、H EDITION OF THE STANDARD FOR LIGHTNING PROTECTION COMPONENTS, UL 96 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 01:34:19 MDTNo reproduction or networking permitted without license from
17、IHS -,-,- SUBJECT 96 -A2- FEBRUARY 28,2002 CONTENTS INTRODUCTION 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A3 2 Glossary A3 3 Units of Measurement . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A4 4 Undated References A4 CONSTRUCTION CLASS I COMPONENTS 5 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19、 . . . . . . . . A4 6 Air Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A4 7 Air Terminal Base Supports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、 . . . . . . . . . . . . . .A5 8 Braces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A6 9 Chimney Bands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、 . . . . . . . . . . . . . . . . . . . . . . . . . A6 10 Conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A6 11 Connector Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A7 12 Bimetallic Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A8 13 Water-Pipe Connectors . . . . . . . . . . . . . . . . . . . . . . . . .
23、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A8 14 Ground-Rod Clamps A8 15 Bonding Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A9 16 Clips and Fasteners A9 17 Ground Elect
24、rodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Al O CLASS II COMPONENTS 18 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25、 . . . . . . . . . AIO 19 Air Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AIO 20 Conductors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . . . . . . . . . . AIO 21 Bonding Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A l l CLASS II MODIFIED COMPONENTS 22 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A l l 23 Air Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A l l 24 Air-Terminal Supports . . . . . . . . .
28、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A12 25 Conductors 26 Connector Fi 27 Bonding Plates PERFORMANCE 28 Security of Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、. . . . . . . .A12 MARKING 29 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A13 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/111111100
30、1, User=Wing, Bernie Not for Resale, 04/02/2007 01:34:19 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 96 -A3- FEBRUARY 28,2002 INTRODUCTION 1 Scope 1 .I These requirements cover lightning protection components for use in the installation of complete systems of li
31、ghtning protection on buildings and structures. 1.2 These requirements do not cover the installation of lightning protection components which is judged under the Installation Requirements for Lightning Protection Systems, UL 96A. 1.3 Lightning protection components are divided into three classes, ac
32、cording to their intended application as defined in 2.1 - 2.3. 1.4 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 fire or of electric shock or injury to persons
33、 shall be evaluated using appropriate additional component and end-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 conflict with specific requirements or provis
34、ions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard. 2 Glossary 2.1 CLASS I COMPONENTS - All conductors, fittings, and fixtures necessa
35、ry to protect ordinary buildings and structures not more than 75 feet (23 m) high. 2.2 CLASS II COMPONENTS - All conductors, fittings, and fixtures necessary to protect ordinary buildings and structures more than 75 feet (23 m) high; or buildings of any height that have a structural steel frame that
36、 are capable of being substituted for lightning down conductors. 2.3 CLASS II MODIFIED COMPONENTS - Components constructed for use in a system to protect a heavy duty stack. 2.4 HEAVY-DUTY STACK - A smoke or vent stack that is more than 75 feet (23 m) high and has a flue with a cross sectional area
37、greater than 500 square inches (0.3 m2). Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 01:34:19 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 96 Materia
38、l Copper and copper alloy Aluminum -A4- Diameter,a Base end thread Wall thickness, Cross-Sectional diameter, area,a square Construction inch (mm) inch (mm) inch (mm) inch (mm) Solid 318 (9.5) 318 (9.5) - 0.110 (71) Tubular 518 (15.9) 112 (12.7) 0.032 (0.81) - Tubular 518 (15.9) 112 (12.7) 0.064 (1.6
39、3) - Solid 112 (12.7) 112 (12.7) - 0.196 (126) FEBRUARY 28,2002 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 re
40、quirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CONSTRUCTION CLASS I COMPONENTS 5 General 5.1 Class I components shall be made of copper, copper alloy, or aluminum. Exception: Class I components shall comply with 5. I unless specifically
41、noted elsewhere in the standard. 6 Air Terminals 6.1 An air terminal may be of one piece construction or may have several separate parts including: point (tip portion), elevation conductor, and base support. 6.2 An air terminal shall not be less than 10 inches (254 mm) long and shall comply with the
42、 requirements in Table 6.1. Table 6.1 Minimum air terminal dimensions 6.3 A copper or copper alloy air terminal intended for use on a chimney shall have a hot-dipped lead coating or equivalent. 6.4 Each air terminal shall be provided with an integral base support or with not less than five full thre
43、ads for attachment to the base support. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 01:34:19 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 96 -A5- FEB
44、RUARY 28,2002 Material Copper or copper alloy Aluminum 6.5 The threaded portion of an internally threaded air terminal shall have a minimum wall thickness of 1/16 inch (1.6 mm), measured at the base of the threads. Minimum thickness, Construction inch (mm) Cast 3/32 (2.4) Cast 3/32 (2.4) Stamped 0.0
45、61 (1.55) Stamped 0.097 (2.48) 6.6 A tubular air terminal shall be provided with a threaded adapter for attachment to the base support. The threaded adapter shall comply with the requirements in 6.4 and Table 6.1 with respect to minimum thread size, and shall be securely attached to the air terminal
46、. 7 Air Terminal Base Supports 7.1 The thickness of an air terminal base support shall not be less than the applicable value specified in Table 7.1. Table 7.1 Thickness of air terminal base supports 7.3 A threaded hub is not required on a base support for a construction in which the air terminal is
47、secured by a locknut on each side of the base support. 7.4 Each base support shall incorporate a connector fitting for connection to the lightning conductor. The conducting cross-sectional area of the base support, between the connector and the base of the air terminal, shall be equal to or greater
48、than that of the conductor. The conductor shall contact the base for not less than 1-1/2 inches (38 mm) on all sides of the cable. Exception: A base support that complies with the Standard for Qualifying Permanent Connections Used in Substation Grounding, IEEE Std. 837, need not comply with these requirements. The applicable tests of IEEE Std. 837 shall be conducted with commercially available lightning protection conductors. 7.5 Provided in the support shall be no less than two mounting holes which shall permanently and rigidly fasten the support. Copyri