1、 TIA STANDARD FOTP-100 Gas Leakage Test for Gas-Blocked Fiber Optic Cables TIA-455-100-A (Revision of EIA-455-100) October 1989 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance ANSI/TIA/EIA-455-100-A-1989Appro
2、ved: October 1989Reaffirmed: May 11, 1999Reaffirmed: May 10, 2005Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA Engineering Standards and Publications are designed t
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7、lity of regulatory limitations before its use. (From Standards Proposal No. 3-4447-RF1, formulated under the cognizance of the TIA FO-4.2 Subcommittee on Optical Fibers and Cables).Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION Standards and Technology Department 2500 Wilson Boulevard Arlingto
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21、d by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-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 the cognizance of TW FO-6.7, Subcommittee on Fib
22、er 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. Other apparatuses shall be acceptable provided tha
23、t 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 measuring the gas pressure within if more than 2
24、 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 evaluate if the captured gas is simply air trapp
25、ed 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 of the captured gas from the capturing devices
26、, 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 Remove the test specimen from the testing appara
27、tus. 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 the cable construction caused by the test. Exa
28、mples 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 if the sample fails, to determine the cause of
29、 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 without license from IHS Sold to:TlA, 01429452 Not fo
30、r Resale,2004/5/12 17:3:22 GMT Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-455-100-A Page 4 The following information shall be part of the report, unless exception is ta
31、ken in the Detail Specification: Date and title of test. Name of operator, for military requirements, or responsible test supervisor, otherwise. Identification of the fiber optic cable. Failure criteria and the resulting leakage. Report of damage to the cable. Photographs or illustrations of sample
32、end and cable damage if any. Leak analysis (per Section 4.9), if specified by the Detail Specification. Test Equipment used 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 f
33、iber 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 Length 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 Anal
34、ysis, if the Leak Analysis is required by the Detail Specification (Section 43). Copyright Telecommunications Industry Association 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 - . -
35、Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-PRESSURE GAUGE PRESSURE TIA-455-100-A Page 5 VALVE i- FIGURE I Copyright Telecommunications Industry Association Provided by IHS
36、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 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot fo
37、r ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
