1、 TIA-472G000 December 2010 Sectional Specification (Adopted ANSI/ICEA S-112-718-2008) Standard for Optical Fiber Cable for Placement in Sewer EnvironmentsNOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufact
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19、S. This page blank. ANSI/ICEA S-112-718-2008 TIA-472G000 i FOREWORD ICEA Standards are adopted in the public interest and are designed to eliminate misunderstanding between the manufacturer and user and to assist the user in selecting and obtaining proper products for a particular need. The existenc
20、e of an ICEA Standard does not in any respect preclude the manufacture or use of products not conforming to this Standard. The user of this Standard is cautioned to observe any applicable health or safety regulations and rules relative to the manufacture and use of cable made in conformity with this
21、 Standard. This Standard hereafter assumes that only properly trained personnel using suitable equipment will manufacture, test, install and/or perform maintenance on cables defined by this Standard. The Secretary can only accept questions of interpretation of ICEA Standards in writing at Headquarte
22、rs at the address below, and the reply shall be provided in writing. Suggestions for improvements in this Standard are welcome. Questions and suggestions shall be sent to: Secretary Insulated Cable Engineers Association, Inc. Post Office Box 1568 Carrollton, GA 30112, U.S.A United States of America
23、This Standard was approved by ICEA on June 12, 2007. This Standard was approved by The American National Standards Institute (ANSI) on April 8, 2008. This Standard was adopted by the Telecommunications Industry Association (TIA) as TIA-472G000 in April 2010. The members of the ICEA Communications Ca
24、ble Division, Working Group 718, who participated in this project were: Ray Lovie, Chairman Ken Chauvin and Mike Kinard, Editors D. K. Baker G. L. Dorna K. Dunn D. Hessong N. Jones J. Struhar J. Rosko J. Shinoski O. Storaasli D. Taylor P. VanVickle ANSI/ICEA S-112-718-2008 TIA-472G000 ii This page b
25、lank. ANSI/ICEA S-112-718-2008 TIA-472G000 iiiCONTENTS PARAGRAPH PAGE Part 1: INTRODUCTION 1 1.1 Scope. 1 1.2 General 3 1.3 Units. 4 1.4 Definitions 4 1.5 References. 6 1.6 Information to Be Supplied by the User. 6 1.7 Modification of this Standard . 6 1.8 Quality Assurance 6 1.9 Fire Resistance Cod
26、es 7 1.10 Safety Considerations 7 Part 2: OPTICAL FIBERS 8 2.1 General 8 2.2 Optical Fiber Classes. 8 2.3 Optical Fiber Requirements. 8 2.4 Optical Fiber Coating and Requirements 8 Part 3: OPTICAL FIBER CORE UNITS 11 3.1 General 11 3.2 Loose Buffer Tubes . 11 3.3 Optical Fiber Bundles 12 3.4 Optical
27、 Fiber Ribbons 12 3.5 Tight Buffers. 13 Part 4: CABLE ASSEMBLY, FILLERS, STRENGTH MEMBERS, AND FIBER AND UNIT IDENTIFICATION 15 4.1 Cabling of Multi-Fiber Optical Fiber Cables. 15 4.2 Identification of Fibers within a Unit. 15 4.3 Identification of Units within a Cable 15 4.4 Strength Members . 15 4
28、.5 Assembly of Cables. 17 4.6 Filling and Flooding Materials 17 ANSI/ICEA S-112-718-2008 TIA-472G000 ivPARAGRAPH PAGE Part 5: COVERINGS 18 5.1 Binders. 18 5.2 Shielding, Armoring, or Other Metallic Coverings . 18 5.3 Jackets. 20 5.4 Other Coverings. 21 5.5 Jacket Repairs . 21 5.6 Ripcords. 21 Part 6
29、: OTHER REQUIREMENTS 22 6.1 Identification and Date Marking . 22 6.2 Optical Cable Identification and Other Markings. 22 6.3 Length Marking 23 6.4 Cable Remarking. 24 6.5 Packaging and Marking . 24 Part 7: TESTING AND TEST METHODS 26 7.1 Testing . 26 7.2 Extent of Testing 26 7.3 Standard Test Condit
30、ions 26 7.4 Testing of Conductive Wires in Composite Optical Cables. 27 7.5 Verification of Physical Construction, Color Code, and Identification . 27 7.6 Environmental Stress Cracking Resistance Test 28 7.7 Jacket Shrinkage Test . 28 7.8 Cable Chemical Resistance Test 29 7.9 Gas-Blocked Cable Test
31、31 7.10 Weathering Test 32 7.11 Verification of Cable Length and Marking Accuracy 32 7.12 Cable and Component Dimensions. 33 7.13 Ribbon Dimensions 33 7.14 Ribbon Separability Test 34 7.15 Ribbon Twist Test 36 7.16 Ribbon Residual Twist Test. 36 7.17 Tight Buffer Strippability Test. 37 7.18 Ripcord
32、Functional Test. 37 7.19 Material Compatibility and Cable Aging Test 38 7.20 Cable Low and High Temperature Bend Test. 39 7.21 Cable External Freezing Test 39 7.22 Cable Compound Flow (Drip) Test 40 7.23 Cable Temperature Cycling Test. 40 ANSI/ICEA S-112-718-2008 TIA-472G000 v PARAGRAPH PAGE Part 7:
33、 TESTING AND TEST METHODS (continued) 7.24 Cable Cyclic Flexing Test 41 7.25 Cable Impact Test 41 7.26 Cable Cold Impact Test . 42 7.27 Cable Tensile Loading, Bending, and Fiber Strain Test 43 7.28 Cable Compressive Loading Test . 44 7.29 Cable Twist Test 45 7.30 Cable Sheath Adherence Test 46 7.31
34、Cable Water Penetration Test . 46 7.32 Cable Fire Resistance . 47 Part 8: FINISHED CABLE OPTICAL PERFORMANCE REQUIREMENTS 48 8.1 Optical Performance 48 8.2 Attenuation Coefficient. 49 8.3 Multimode Optical Bandwidth 50 8.4 Measurements of Optical Point Discontinuities. 50 8.5 Cable Cutoff Wavelength
35、 Measurement (Single-Mode Fibers) 51 PART 9 REFERENCES 52 ANNEX A ORDERING INFORMATION 56 ANNEX B SEWER CABLE CONSIDERATIONS 57 ANNEX C ICEA TELECOMMUNICATIONS CABLE STANDARDS 68 TABLES Table 1-1 Cable Normal Temperature Ranges . 2 Table 2-1 Multimode Optical Fiber Specification Requirements . 9 Tab
36、le 2-2 Single-mode Optical Fiber Specification Requirements.10 Table 4-1 Individual Fiber, Unit, and Group Identification 16 Table 6-1 Year of Manufacture Marker Threads 23 Table 7-1 Fluid Immersion Test Criteria .30 Table 7-2 Maximum Dimensions of Optical Fiber Ribbons 34 Table 8-1 Attenuation Coef
37、ficient Performance Requirements48 Table 8-2 Multimode Bandwidth Coefficient Performance Requirements48 Table 8-3 Point Discontinuity Acceptance Criteria .49 Table 8-4 Optical Attenuation Measurement Methods .49 Table 8-5 Multimode Optical Bandwidth Measurement Methods.50 ANSI/ICEA S-112-718-2008 TI
38、A-472G000 viFIGURES Figure 7-1 Ribbon Dimensional Parameters34 Figure 7-2 Ribbon Preparation.35 Figure 7-3 Ribbon Separation35 ANSI/ICEA S-112-718-2008 TIA-472G000 1 ICEA STANDARD FOR OPTICAL FIBER CABLE FOR PLACEMENT IN SEWER ENVIRONMENTS PART 1 INTRODUCTION 1.1 SCOPE 1.1.1 General Overview This St
39、andard covers optical fiber communications cables intended for installation in underground sewers, specifically storm and sanitary sewers. Materials, construction, and performance requirements are included in this Standard, together with applicable test procedures. Additional applications-based cons
40、iderations are discussed as well. Refer to ICEA S-87-640 for optical fiber communications cables intended for general outside plant use, ICEA S-110-717 for optical fiber cables intended for aerial, duct, and buried outdoor and indoor/outdoor drop applications, and ICEA S-104-696 for optical fiber co
41、mmunications cables intended for indoor/outdoor use. 1.1.2 Applications Space Products covered by this Standard are intended for use in metropolitan, urban, and suburban communications networks via use of underground infrastructures, in the last portion of all-optical networks, such as storm and san
42、itary sewers. These products convey communications signals (voice, video, and data) in metropolitan network rings and serve as point-to-point connections to the subscribers premises via sewer laterals, in the last portion of the optical network. These products are intended for use in sewer lines, us
43、ing man-entry and non-man entry techniques. Such installations are intended to have no adverse effect on the efficiency of the sewer system. These cables are generally placed manually in pre-installed trays or conduits or may be secured to the sewer pipe wall by means of hooks, adhesive beds, sewer
44、pipe liners, or may be tensioned intermittently, in order to maintain the cable and/or conduit out of the flow of the effluent. The successful application of optical fiber cables in sewer systems requires that all identified maintenance to or rehabilitation of the sewer pipes be conducted ANSI/ICEA
45、S-112-718-2008 TIA-472G000 2 prior to cable installation, in accordance with procedures under development by ASTM1. 1.1.3 Temperature Ranges The normal temperature ranges for cables covered by this Standard are given in Table 1-1 Table 1-1 Cable Normal Temperature Ranges(1) C (F) Operation -20 to +7
46、0 (-4 to +158) Storage and Shipping -40 to +70 (-40 to +158) Installation -20 to +60 (-4 to +140) Note: 1) See section 1.4.1.6 for information on sewer-only cables. 1.1.4 Tensile Rating For the purposes of this document, the standard tensile rating represents the maximum allowable installation load
47、for the cable. The standard tensile ratings for products covered by this Standard are as follows: 1335 N (300 lbf) for cables designed for installation by pulling into ducts. 440 N (100 lbf) for cables designed for installation into ducts with the assistance of compressed gases or for installation u
48、nder low tension using man-entry (i.e., hand-installation), or non-man entry (e.g., robotics), techniques. For some sewer applications additional considerations for tensile performance may be appropriate to ensure that the cable design is appropriate for the installation. One example is when tension
49、ing a cable designed to stay at the top of a sewer pipe without the use of hooks. Some applications may require higher installation tensile ratings e.g., 2670 N (600 lbf) to support pulling of longer span distances or applications requiring larger diameter cables. See Annex B for information on additional sewer cable plant requirements and considerations. The residual load is defined as a load equivalent to 30% of the standard tensile rating. 1 Systems-level work on sewer-based communications applications is the prerogative of ASTM Technical Committee F36 on Technology an
