ANSI TIA-455-100-A-1989 Gas Leakage Test for Gas-Blocked Fiber Optic Cables《气阻光缆的气体泄漏试验》.pdf

1、 TIA-455-100-A (Revision of TIA-455-100) October 1989FOTP-100 Gas Leakage Test for Gas-Blocked Fiber Optic Cables ANSI/TIA-455-100-A-1989 APPROVED: OCTOBER 1989 REAFFIRMED: MAY 11, 1999 REAFFIRMED: MAY 10, 2005 REAFFIRMED: MARCH 22, 2013 NOTICE TIA Engineering Standards and Publications are designed

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6、bility of regulatory limitations before its use. (From Project No. ANSI/TIA-PN-455.100-RF3, formulated under the cognizance of the TIA TR-42 Telecommunications Cabling Systems, TR-42.12 Subcommittee on Optical Fibers and Cables). Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Tec

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22、GOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-455-100-A Page 1 FOTP-100 GAS LEAKAGE TEST FOR GAS-BLOCKED FIBER OPTIC CABLES (From TIA Standards Proposal No. 2137, formulated under t

23、he cognizance of TW FO-6.7, Subcommittee on Fiber Optic Cables.) This FOTP is part of the series of test procedures included within Recommended Standard EIA/TIA-455. NOTE: This FOTP was previously published in RS-455-100 as FOTP-100. Pressure System A typical test apparatus is shown in Figure 1. Oth

24、er apparatuses shall be acceptable provided that appropriate pressure regulation equipment and appropriately-sized chambers capable of handling the pressure are used. A pressure manifold system shall be used to supply the specified gas pressure to each cable sample. A pressure indicator capable of m

25、easuring the gas pressure within if more than 2 rnl of gas is captured, the specimen automatically fails the test. 4.7.3 if 2 ml or less of gas is captured, special care must be taken to determine the origin of the captured gas. In this case, the test shall be performed again using a tracer gas to e

26、valuate if the captured gas is simply air trapped in the cable structure during manufacture or if it is actually test gas that has forced a path through the cable. One such tracer gas that can be used in sulfur hexafluoride. When this tracer gas is utilized, a syringe can be used to extract a sample

27、 of the captured gas from the capturing devices, exercising caution to assure that no water is extracted with the gas sample. The extracted gas is then expelled directly into a sulfur hexafluoride detector. If sulfur hexafluoride is detected, the specimen is considered to have failed the test. 4.8 R

28、emove the test specimen from the testing apparatus. Unless otherwise specified, visually examine the tested specimen in accordance with the requirements of FOTP-13 (EL4-455-13), Visual and iVfechanica1 Inspection 01 Fibers, Cables, Connectors, and/or Other Fiber Optic Devices, checking for damage to

29、 the cable construction caused by the test. Examples of test-induced damage include, but are not limited to: ballooning jackets, fibers extended out of the buffer tubes and gas blocking compound pushed out of the cable. 4.9 If specified in the Detail Specification, a leak analysis shall be performed

30、 if the sample fails, to determine the cause of failure. The analysis shall consist of determining what the failing component was and the possible cause of failure. Copyright Telecommunications Industry Association Provided by IHS under license with EIA No reproduction or networking permitted withou

31、t license from IHS Sold to:TlA, 01429452 Not for Resale,2004/5/12 17:3:22 GMT TIA-455-100-A Page 4 The following information shall be part of the report, unless exception is taken in the Detail Specification: Date and title of test. Name of operator, for military requirements, or responsible test su

32、pervisor, otherwise. Identification of the fiber optic cable. Failure criteria and the resulting leakage. Report of damage to the cable. Photographs or illustrations of sample end and cable damage if any. Leak analysis (per Section 4.9), if specified by the Detail Specification. Test Equipment used

33、and data on calibration. Identification of test methods or procedures used. 6. SPECIFYING IWORMATION The following shall be specified in the Detail Specification: 6.1 Type of fiber optic cable to be tested. 6.2 Test conditions, 6.2.1 Temperature. 6.2.2 Test pressure. 6.2.3 Duration of test. 6.2.4 Le

34、ngth of sample. 6.2.5 Units of reported results. 6.3 Acceptance and Rejection Criteria 6.3.1 Maximum leakage allowed. 6.3.2 Cable damage criteria. 6.4 Requirement for Leak Analysis, if the Leak Analysis is required by the Detail Specification (Section 43). Copyright Telecommunications Industry Assoc

35、iation Provided by IHS under license with EIA Sold to:TIA, 01429452 No reproduction or networking permitted without license from IHS Not for Resale,2004/5/12 17:3:22 GMT - . - -PRESSURE GAUGE PRESSURE TIA-455-100-A Page 5 VALVE i- FIGURE I Copyright Telecommunications Industry Association Provided b

36、y IHS under license with EIA No reproduction or networking permitted without license from IHS TYPICAL GAS LEAKAGE TEST APPARATUS Sold to:TIA, 01429452 Not for Resale.2004/5/12 17322 GMT - . - PRESSURI ZED SYSTEM THE TELECOMMUNICATIONS INDUSTRY ASSOCIATION TIA represents the global information and co

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