1、TIA DOCUMENT FOTP 82-B Fluid Penetration Test for Fluid-Blocked Fiber Optic Cable (Revision of EIA/TIA-455-82-A) ANSI APPROVAL WITHDRAWN JUNE 2003 FEBRUARY 1992 TELECOMMUNICATIONS INDUSTRY ASSOCIATION NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through
2、 eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Publications shall not in an
3、y respect preclude any member or non-member of TIA from manufacturing or selling products not conforming to such Publications. Neither shall the existence of such Documents preclude their voluntary use by non-TIA members, either domestically or internationally. TIA DOCUMENTS TIA Documents contain in
4、formation deemed to be of technical value to the industry, and are published at the request of the originating Committee without necessarily following the rigorous public review and resolution of comments which is a procedural part of the development of a American National Standard (ANS). Further de
5、tails of the development process are available in the TIA Engineering Manual, located at TIA Documents shall be reviewed on a five year cycle by the formulating Committee and a decision made on whether to reaffirm, revise, withdraw, or proceed to develop an American National Standard on this subject
6、. Suggestions for revision should be directed to: Standards however, this test method can be used to assure or to evaluate fluid penetration integrity in other environments by specifying appropriate fluid(s), test length(s), pressure(),allowableflow rate(s), etc., in the cable Detail Specification.
7、NOTE: Fiber optic cables, like many products, are available in a multiplicity of designs, and not all cable designs will perform equally well in this test (nor are they necessarily intended to be equal). Different cable sheath designs may provide -fluid paths, to some degree, outside of the cable co
8、re, but such paths may be no problem in a particular application. Although applications for fluid-blocked cables generally require resistance to fluid penetration in both the core and in all sheath interfaces (or interstices), this may not always be the case. This method is similar to the water pene
9、tration test for telecommunications cable appearing in ASTM D 4565. Reproduced by IHS under license with EIA It is the responsibility of the writer of the Detail Specification for the fiber optic cable product to determine - if FOTP-82 should be a required test, how that test should be imposed (spec
10、ial sample preparation, etc.), and what the particular performance requirements should be (amount of fluid flow permitted, retest allowance, etc.) 2. APPLICABLE DOCMEXTS The following documents form a part of this FOTP to the extent specified herein: FOTP-13 (EIA-455-13) ASTM D 4565-90a “Standard Te
11、st Procedures for Fiber Optic Fibers, Cables, Transducers, Sensors, Connecting and Terminating Devices, and Other Fiber Optic Components,“ “Visual and Mechanical Inspection of Fiber Optic Components, Devices and Assemblies“ “Standard Methods of Testing Physical and Environmental for Insulations and
12、Jackets Telecommunications Wire and Cable“ Performance Properties of CE1 IEC 794-1, Second Ed. “Optical fibre cables, Part 1: Generic Specification“ Method IEC 794-1-F5 Water Penetration“ 3. APPARATUS The following apparatus and equipment is required to perform this test: 3.1 Fluid-Tight Enclosure.
13、Fluid-tight enclosure(s) designed to fit snugly over the end of a fluid-blocked fiber optic cable, or part of such a cable, without allowing fluid to leak between the enclosure and the cable. The enclosure(s) shall permit application of fluid pressure to the end of the cable under test, while minimi
14、zing the effect of such pressure on the outside of the cable. Reproduced by IHS under license with EIA EIA/TIA-455-82B Page 3 3.2 Fluid Pressure Device. Use any suitable device or method to apply the designated “head“ or force of fluid pressure to the cable end in the fluid-tight enclosure (e.g., fl
15、uid column, pressure tank). 3.3 Fluid Flow Detection. Use a container or other method to catch or detect fluid flow. 3.4 Fluid Source. A supply of tap water or other test fluid. 3.5 Other Equipment. Supplementary equipment and materials may be used for alternative testing or for diagnostic evaluatio
16、n of failing cables. As an example, the following is suggested: 3.5.1 Uranine (Sodium Fluorescein) in water solution consisting of 75 grams of Uranine in 0.4 cubic meter of water (2.5 ounces of Uranine per 100 gallons of water). 3.5.2 Ultraviolet lamp, to detect the. presence of Uranine (3.5.1). 4.
17、SAMPLING AND SPECIMENS 4.1 From each selected representative reel of fluid-blocked fiber optic cable, cut a specimen length of cable. Unless otherwise specified in the Detail Specification, the specimen shall be 1.0 I 0.1 meter (3.0 f 0.3 ft) long, with ends cut perpendicular to the cable axis. Insp
18、ect each specimen as required by FOTP-13 to assure that no obvious physical defects will adversely affect test results (e.g., the cut ends shall not be distorted to such a degree that the flow of fluid through any pre-existing voids would be restricted). Prepare each specimen for test as appropriate
19、. NOTE: For most cable testing, fluid pressure is to be applied to the end of all cable members and sheath interfaces (interstices), so a single perpendicular cut is appropriate. For some designs, however, it may be appropriate to “step back! one cable end to expose and possibly to seal (terminate)
20、individual cable members (such as jacket strength members, core wraps, etc. 1. In such instances, the Detail Specification shall .specify the preparation procedures required to ensure testing of a one meter (3 ft) length of the core or of other portion(s1 of the cable as specified. (See, also, A1.2-
21、1 of the Appendix for an alternative test preparation method.) Special end preparation shall be performed only as instructed in the Detail Specification. Reproduced by IHS under license with EIA 4.2 Unless otherwise specified, precondition each prepared specimen prior to test by allowing it to reach
22、 equilibrium at a temperature of 23 i 5OC. The preferred minimum rest period is 24 hours, but a shorter period may be used if the tester can demonstrate that thermal equilibrium has been reached. 5. PROCEDURE 5.1 This test mav be conducted under factory ambient atmospheric conditions. In-case of any
23、 dispute, however, tests shall be conducted under the Standard Atmospheric Conditions specified in EIA/TIA-455-A. Refer to Figure 1- for an example of a typical test Set-up. In case of disputes, and unless otherwise specified in the Detail Specification, the applied pressure shall be the net gauge p
24、ressure measured with respect to the ambient pressure conditions used for the test. 5.2 Insert one end of the cable specimen the specially prepared end (4.1 NOTE), if appropriate into the fluid-tight enclosure. Note that the enclosure is required to fit snugly around the outside of the cable, but sh
25、all not be so tight that it would restrict the flow of fluid through any pre-existing voids or air spaces within the core or in sheath interfaces. 5.3 Place the cable specimen in a horizontal position with the fluid catch bowl (or other fluid flow detection device) at the free end of the specimen. 5
26、.4 Fill the fluid-tight test enclosure with tap water or other fluid (as specified) to cover the exposed cable end. (Refer to 5.10 for an alternative method.) 5.5 By means of the fluid column or by use of other pressure devices, apply a continuous pressure head to the cable end that is exposed to th
27、e fluid. Unless otherwise specified in the Detail Specification, the applied fluid head shall be 1.0 i 0.1 meter (3.0 f 0.3 ft) of water or equivalent. Reproduced by IHS under license with EIA EIA/TIA-455-82B Page 5 5.6 Maintain the required pressure for the specified period of time, adjusting test
28、conditions as needed to maintain the pressure, eliminate leaks in the apparatus, etc. Unless otherwise specified in the Detail Specification, fluid pressure shall be maintained for a minimum of 1 hour. (If fluid flow through the specimen exceeds the specified amount allowed, the test may be terminat
29、ed before the specified time period concludes.) Y? Fluid Reservoir 1 .O Meter Pressure Head 1 .O Meter FO Cable Water-tight seal G U Fluid Catch Bowl U I Pressure Relief Vaive 8 I - Fluid Pressure Delivery Chamber Figure 1 Typical Fluid Penetration Test Set-up Reproduced by IHC under license with EI
30、A E I A /-4-5-5=8-2 Page 6 5.7 During and at the conclusion of the pressure application period, check the free cable end for evidence of fluid flow. Unless otherwise specified, fluid flow that exceeds the specified maximum quantity within the specified time period constitutes a failure. 5.7.1 If req
31、uired by the Detail Specification, further investigation of the degree of fluid penetration may be made, whether or not fluid flow is detected at the free cable end. For such an investigation, cut the free cable end back in 75 to 150 mm (3 to 6 inch) steps until fluid is detected; then, measure the
32、length and magnitude or amount of fluid penetration from the fluid-exposed cable end. (See also 5.10.) NOTE: FOTP-82 is primarily intended as a simple pass/fail test, and dissection of the cable is normally not appropriate except for purposes of failure analysis, design evaluation, etc. Since such i
33、nvestigations are time- consuming and expensive, they are not to be considered for routine testing. 5.8 Retest of failing cables. 5.8.1 For all except U.S. Military applications, and unless otherwise specified by the Detail Specification, two additional specimens (one from each end of the reel lengt
34、h) may be selected for retest if the initial specimen fails. Unless otherwise specified by the Detail Specification, each retest specimen shall be a maximum of 3.0 meters (10 ft) in length. Special end preparation (see, for example, 4.1 NOTE) of retest specimens shall be allowed to the extent permit
35、ted by the Detail Specification. 5.8.2 For U.S. Military applications only, retest, if allowed, shall be in accordance with the requirements of the Detail Specification. 5.9 Acceptance of cables. 5.9.1 If the original test specimen exhibits fluid leakage less than the specified maximum amount, the e
36、ntire reel of cable shall be considered as acceptable. If the original gr a watertight sleeve (with a water supply opening) is placed to cover the gap in the sheath. The other cable end (indeterminate distance from the open sheath) is capped. 2. With the cable supported horizontally, a 1 m head of w
37、ater is applied to an opening in the watertight sleeve and maintained for a period of 24 hours at a specified temperature of 20 +_ SOC. The water used contains a fluorescent dye. 3. After the 24 hour test period, the open end of the 3 m length of cable is examined with ultraviolet light to check for
38、 seepage. Acceptance criterion is that no dye shall be detected at the cable end. 4. Notes to IEC 794-1-F5 indicate that shorter samples may be tested routinely, and that a few drops of seepage detected outside of the core wrap are acceptable. Reproduced by IHS under license with EIA E I A /TIA-4-5-
39、SY8-2 Page 10 5. Retest is not mentioned one way or another in IEC 794-1-FS. 6. Because of its longer test time and its relatively inflexible pass/fail criteria, the IEC test would have to be considered to be somewhat more severe than FOTP-82. Additionally, some of the IEC test conditions (method of
40、 sample preparation, test temperature, fluid used, etc.) are less flexible than the FOTP. However, the IEC test is somewhat less demanding than the FOTP in checking for fluid flow between sheath interfaces, and, with a high fiber count core, the IEC test may not adequately test the inner portion of
41、the cable core. A.2 IS0 It is noted that as of this publication date, there are no known IS0 tests methods that are similar to this FQTP. A.3 CCITT It is noted that as of this publication date, there are no known CCITT test methods that are comparable to this FOTP. Reproduced by IHS under license with EIA
