UL-360-BULLETINS-2004.pdf
《UL-360-BULLETINS-2004.pdf》由会员分享,可在线阅读,更多相关《UL-360-BULLETINS-2004.pdf(38页珍藏版)》请在三一文库上搜索。
1、Subject 1696 (360, 1660) (in reply, refer to Subject 1696) 1655 Scott Blvd. Santa Clara, CA 95050 December 15, 2004 TO: Standards Technical Panel (STP) for Nonmetallic Conduit and Fittings, STP 651 Subscribers to ULs Standards Service for Liquid-Tight Flexible Steel Conduit Liquid-Tight Flexible Non
2、metallic Conduit Other Interested Parties SUBJECT: Request for Comments on Changes to the Proposed First Edition of the Binational Standard for Nonmetallic Mechanical Protection Tubing (NMPT), UL 1696, as Initially Proposed in ULs Bulletin dated May 7, 2004 PROPOSED EFFECTIVE DATE SUMMARY OF TOPICS
3、THIS BULLETIN SUPERSEDES THE SUBJECT 1696 BULLETIN DATED NOVEMBER 24,2004. Based on comments received, this bulletin proposes changes in requirements from those initially proposed in ULs May 7, 2004 bulletin containing the proposed first edition of the binational Standard for Nonmetallic Mechanical
4、Protection Tubing (NMPT), UL 1696. COMMENTS DUE: January 17,2005 Attached as Appendix A for your review and comment are proposed changes to the requirements for UL 1696 as originally proposed in ULs proposed first edition bulletin dated May 7, 2004. The proposed changes are a result of comments rece
5、ived in response to the May 7, 2004 bulletin. Only those paragraphs where changes are being proposed (as compared to the draft of the first edition provided in the May 7, 2004 bulletin) are included here. Questions regarding interpretation of requirements should be directed to the appropriate respon
6、sible UL Staff. Please note that proposed requirements are of a tentative and early nature and are for review and comment only. PRODUCTSANDINDUSTRIESAFFECTED BYTHE PROPOSAL UL requests your assistance in identifying other products or industries that might be affected by the requirements contained in
7、 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 industries may be identified in future bu I let ins. Copyri
8、ght Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 00:20:45 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 1696 -2- DECEMBER 15,2004 PROPOSED EFFECTIVE DATE Adoption of the n
9、ew requirements will necessitate a review and possible retest of currently Recognized mechanical protection tubing covered under UL 224 under the category of YDRQ2. The May 7, 2004 bulletin proposed a future effective date of 18 months after publication. The future effective date is proposed to be e
10、xtended to 24 months. This time frame includes the amount of time UL needs to conduct an Industry File Review of the YDRQ2 products. REQUESTS FOR COMMENTS ON PROPOSALS Please provide your comments, concerning the proposed requirements and the proposed effective date, no later than January 17, 2005.
11、Comments must be made in writing and may be sent by regular mail, fax, or e-mail to the attention of Sue Contreras at ULs Santa Clara office, 1655 Scott Blvd., Santa Clara, CA, 95050. Please reference all correspondence to Subject 1696. If you respond by fax or e-mail, please include your full name,
12、 company name and address, and fax number/e-mail address to ensure a reply. All comments should be sent by January 17, 2005. Unless specifically requested to do so, UL will not acknowledge comments indicating concurrence with these proposals. UNDERWRITERS LABORATORIES INC. REVIEWED BY: SUE CONTRERAS
13、 Project Manager Standards Department SANTA CLARA OFFICE Fax: (408) 556-6247 E-mail: Sue.B.Contrerasus.UL.com http:/ Ph: (408) 876-2484 GEORGE WALBRECHT Principal Engineer Primary Designated Engineers NORTH BROOK OFF ICE Fax: (847) 313-3126 E-mail : George. F. Wal brechtus. U L.com Ph: (847) 684-312
14、6 Copyright O 2004 Underwriters Laboratories Inc. SR: RM bl-I 696.1-2004121 5 Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 00:20:45 MDTNo reproduction or networking permitted without license from I
15、HS -,-,- SUBJECT 1696 -Al- DECEMBER 15,2004 APPENDIX A PROPOSED CHANGES IN REQUIREMENTS FOR THE PROPOSED FIRST EDITION OF THE STANDARD FOR NONMETALLIC MECHANICAL PROTECTION TUBING (NMPT), UL 1696, ORIGINALLY CONTAINED IN ULS MAY 7,2004 BULLETIN For your convenience in review, text proposed to be add
16、ed to proposed requirements as published in ULs May 7, 2004 bulletin is shown underlined and text proposed to be deleted is shown +med-e and the reversal of the trade size and metric designator in paragraphs 1.1, 5.7.1, 6.1.1, and Tables 1 through 5; will not have an impact on the manufacture of NMP
17、 Tubing. If adopted, the changes to the cold conditioning test method will not have an impact on the manufacture of NMP Tubing. If the changes to the marking requirements proposed in paragraphs 6.2.1.1 and 6.2.2.1 are adopted, marking text for some nonmetallic fittings and smallest-unit packaging ma
18、y need to be reworded. If adopted, the changes proposed to Tables 3 and 4 will not have an impact on the manufacture of products covered by this standard. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/20
19、06 00:20:45 MDTNo reproduction or networking permitted without license from IHS -,-,- SUBJECT 1696 -A3- DECEMBER 15,2004 PROPOSALS 1.1 This Standard applies to nonmetallic mechanical protection tubing (NMPT) and fittings in trade sizes - 10 to 53 1/4 to 2) trade size for use as support and protectio
20、n of insulated conductors in equipment intended for use in non-hazardous locations. Thc wa-ltes i : : pae C22.2 NO. 211.0-03, General Requirements and Methods of Testing for Nonmetallic Conduit. CSA C22.2 18.3-04, Conduit. Tubina and Cable Fittinas UL Standards UL 94 Tests for Flammability of Plasti
21、c Materials for Parts in Devices and Appliances; UL 514B Conduit. Tubina and Cable Fittinas UL 746A Standard for Polymeric Materials Short Term Property Evaluations. ASTM* Standards D 2444-99, Standard Test Method for Determination of the Impact Resistance of Thermoplastic Pipe and Fittings by Means
22、 of a Tup (Falling Weight); D 5025-99, Standard Specification for Laboratory Burner Used for Small-Scale Burning Tests on Plastic Materials; D 5207-98, Standard Practice for Calibration of 20 and 125 mm Test Flames for Small-Scale Burning Tests on Plastic Materials; D 5423-93(1999), Standard Specifi
23、cation for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation; Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=Army Northwestern Div./7838506130 Not for Resale, 08/30/2006 00:20:45 MDTNo reproduction or networking permitted without licen
24、se from IHS -,-,- SUBJECT 1696 -A4- DECEMBER 15,2004 G 155-OOael , Standard Practice for Operating Xenon Arc Light Apparatus for Exposure of Nonmetallic Materials. National Research Council Canada National Building Code of Canada, 1995. *American Society for Testing and Materials 5.4.3 For a test us
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- UL 360 BULLETINS 2004
链接地址:https://www.31doc.com/p-3802276.html