1、AMSC N/A FSC 8130 MIL-DTL-3241F 6 January 2010 SUPERSEDING MIL-R-3241E 9 July 1985 DETAIL SPECIFICATION REELS, CABLE (REELS DR-5( ), DR-7( ), DR-B( ), RC-453( )/G, RL-159( )/U) INACTIVE FOR NEW DESIGN AFTER 25 FEBRUARY 1998 This specification is approved for use by all Departments and Agencies of th
2、e Department of Defense. 1. SCOPE 1.1 SCOPE. This specification covers five types of steel reels for use in storing and transporting field wire and cable, designated as reels DR-5( ), DR-7( ), DR-8( ), RC-453( )/G and RL-159( )/U (see 6.4). 2. APPLI CABLE DOCUMENTS 2. 1 General. The documents listed
3、 in this section are specified in section 3, 4, or 5 of this standard. This section does not include documents cited in other section of this standard or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users ar
4、e cautioned that they must meet all specified requirements of documents cited in section3, 4, or 5 of this standard, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this sp
5、ecification to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-C-10578 - Corrosion Removing and Metal Conditioning Compound (Phosphoric Acid Base) MIL-W-12332 - Welding, R
6、esistance, Spot, Seam, and Projection, for Fabricating Assemblies of Low- Carbon Steel MIL-DTL-14072 - Finishes for Ground Based Electronic Equipment MIL-DTL-53039 - Coatings, Aliphatic Polyurethane, Single Component, Chemical Agent Resistant Comments, suggestions, or questions on this document shou
7、ld be addressed to Defense Supply Center Philadelphia (DSCP), ATTN: DSCP-NASA, 700 Robbins Avenue, Philadelphia, PA 19111-5096 or e-mail to dscpg however, final acceptance and shipment will be withheld until the group C reinspection results have shown that the corrective action was effective (see 6.
8、3). 4.3.2.4 Reinspection of conforming group C sample units. Unless otherwise specified, sample units which have been subjected to and passed group C inspection may be accepted on contract, provided that they are resubjected to and pass group A inspection after repair of all visible damage. 4.4 Work
9、manship. The reels shall be given a thorough visual and mechanical inspection to ascertain that the material, construction, and welding are in accordance with applicable requirements (see 3.12). 4.5 Test for fit on axle. Reels DR-5( ), DR-7( ), RC-453( )/G and RL-159( )/U shall be tested with an axl
10、e 1-1/32 inch +0 -1/64 by 1-1/32 inch +0 -1/64 to insure compliance with 3.4. Reel DR-8( ) shall be tested with an axle 11/32 inch +0 -1/64 by the 11/32 inch +0 -1/64 to insure compliance w1th 3.4. 4.6 Alignment tests. 4.6.1 Reel head. The requirements of 3.5 shall be met for reels DR-5( ), DR-7( ),
11、 RC-453( )/G and RL-159( )/U when axle, 1-1/32 inch +0 -1/64 by 1-1/32 inch +0 -1/64 is inserted through the center of reels. The same shall apply for reel DR-8( ) except that the axle size shall be 11/32 inch +0 -1/64 by 11/32 inch +0 -1/64. 4.6.2 Plate alignment on reel RC-453( )/G. The requiremen
12、ts of 3.5.1 shall be met using the drum as a reference. 4.7 Vibration test. The reels shall be subjected to the test of 4.7.1 through 4.7.4. During vibration the unlit shall be clamped in its normal operating position on a vibration table that can be controlled to within 10 percent of specified freq
13、uencies and amplitudes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL3241F 8 4.7.1 Direction of vibration. The reels shall be vibrated successively, over the specified ranges of applied frequencies, in three mutually perpendicular directions
14、 parallel to the edges of the reels. 4.7.2 Rate of change of vibration frequency. The frequency of the applied vibration shall be varied uniformly at a rate of approximately one Hz per minute. 4.7.3 Amplitude and frequency of applied vibration. The amplitude (one-half of the total excursion) of the
15、vibration table and the frequency range shall be in accordance with the following: Frequency of vibration (hz) Amplitude of vibration (in) 10 to 33 Horizontal 0.020 Vertical 0.030 4 7.4 Duration of test. The reels shall be vibrated for at least six hours, two hours in each of the three directions sp
16、ecified in 4.7.1. 4.7.5 At the conclusion of the tests, the reels shall be examined for compliance with 3.6. 4.8 Drop test. The drop test shall be performed on the reels specified in 4.8.1 prior to finishing. The reel loaded with wire or cable shall be conditioned in a temperature chamber at -40 deg
17、ree F for 24 hours prior to the drop test. The drop test shall be conducted immediately as soon as the reel is removed from the temperature chamber. If all the specified drops cannot be completed within 10 minutes after removal, immediately return the reel to the -40 degree F temperature chamber for
18、 1 hour before proceeding to the next 10 minute test period during which the reel may be dropped. After each 10 minute test period, immediately return the reel to the cold temperature chamber before proceeding to the next 10 minute test period until all the specified drops have been completed. 4.8.1
19、 Each type of reel shall be loaded with a weight of wire or cable comparable to its normal use with total weight as follows: DR-5( ) 125 pounds DR-7( ) 133 pounds DR-8( ) 15 pounds RC-453( )/G 150 pounds RL-159( )/U 50 pounds 4.8.2 The reel shall be lifted off the floor by use of a hoist, equipped w
20、ith a quick release device. When the bottom of the reel is 3-1/2 feet above the 2 inch fir platform backed by a concrete floor, It shall be released so as to drop squarely on the perifery of both heads. 4.8.3 The reel shall then be lifted as above, held until motionless, and dropped squarely on one
21、side. Then repeat on other side. 4.8.4 The reel shall be lifted at a single point at the edge of one head, held until motionless, and then dropped so that the reel will land on the opposite head at an angle to the perifery of one head. Repeat the same procedure on the other head. 4.8.5 At the conclu
22、sion of the tests, the reel shall be examined for compliance with 3.7. 4.9 Welding inspection. Welding shall be testing for nonvisual defects by magnetic particle method specified in ASTM E1444 for compliance with 3.3.4. 4.10 Steel reel heads. 4.10.1 The yield strength, tensile strength, and elongat
23、ion at rupture of the steel reel heads shall be tested in accordance with ASTM E8/E8M for compliance with 3.2. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL3241F 9 4.10.2 The hardness of the reel heads shall be tested in accordance with ASTM
24、 E10 or ASTM E18 for compliance with 3.2. The test shall be made before paint is applied. 4.11 Moisture resistance test. The reel shall be subjected to fifteen continuous 48 hour moisture resistance cycles. A single cycle shall consist of Steps 1 through 8. The relative humidity shall be maintained
25、between 90 and 98 percent at all times throughout each cycle and during the first conditioning period. The actual temperature of the conditioning periods and during each cycle at steps 2, 4, 6 and 8 shall be within 3 degrees F of the temperature specified. Condition the reel at 86 degrees F for 24 h
26、ours before test. Step 1. Raise the internal chamber temperature from 86 to 149 degrees F at a rate of not less than 15 degrees F per hour. Step 2. Maintain the temperature at 149 degrees F for 8 hours. Step 3. Lower the temperature from 149 to 86 degrees F at a rate of not less than 15 degrees F pe
27、r hour. Step 4. Maintain the temperature at 86 degrees F for 20 hours. Step 5. Lower the temperature from 86 to 68 degrees F within 2 hours. Step 6. Maintain the temperature at 68 degrees F for 4 hours. Step 7. Raise the temperature from 68 to 86 degrees F within 2 hours. Step 8. Maintain the temper
28、ature at 86 degrees F for 4 hours. After completion of the fifteen cycles, condition the reel at 73 degrees F and between 40 and 60 percent relative humidity for 24 hours. Then inspect the reel for any evidence of corrosion or other deterioration. The reel shall meet the requirements of 3.8. 4.12 Di
29、electric strength test for Reel DR-3( ). Reel DR-8( ) shall be tested as follows for compliance with 3.9: a. Apply a potential of 500 volts rms, 60 hz, for 1 minute between each binding post of connector M-221 and the unfinished inside of the reel hub. b. Apply a potential of 500 volts rms, 60 hz, f
30、or 1 minute between the two binding posts of connector M-221 5. PACKAGING. 5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these person
31、nel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activities within the Military Service or Defense Agency, or within the military services system commands. Packaging data retrie
32、val is available from then managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL3241F 10 6. NOTES 6.1 I
33、ntended use. The reels covered by this specification are intended for use In storing and transporting the following length and types of wire and cable: Designation Capacity Reel RL-159( )/U 2 kilometers of wire WD-1A/TT Reel DR-5( ) 1 mile of wire WF-16( )/U Reel DR-7( ) 1000 feet of cable having an
34、 outside diameter of 0.700 inch Reel DR-8 1/2 k1lometer of wire WD-1A/TT Reel RC-453( )/G 1/4 mile of Cable Assembly CX1606( )/G or CX-11230( )/G or 1 kilometer of Cable Assembly, Fiber optic, CX-XXXXX 6.2 Ordering data. Procurement documents should specify the following: a. Title, number and date o
35、f the specification. b. Type required (see 1.1). c. Place of final inspection. d. Packaging requirements (see 5.1). 6.3 Group C inspection. Approval to ship may be withheld, at the discretion of the government, pending the decision from the contracting officer on the adequacy of corrective action (s
36、ee 4.3.3.3). 6.4 Nomenclature. The parenthesis in the nomenclature will be deleted or replaced by a letter identifying the particular design, for example, reel RC-453W/G. As soon as possible after the award of the contract, the contractor should apply to the government office specified in the contra
37、ct for such information (see 1.1). 6.5 Verification inspection. Verifications by the government will be limited to the amount deemed necessary to determined compliance with the contract and will be limited in severity to the definitive quality assurance provision established in this specification an
38、d the contract. The amount of verification inspection by the government will be adjusted to make maximum utilization of the contractors quality control system and the quality history of the product (see 4.3). 6.7 Subject term (key word) listing. Transporting Spool Wire 6.8 Changes from previous issu
39、e. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL3241F 11 Custodians: Preparing activity: Army - CR DLA
40、IS Navy - YD Air Force - 11 (Project 8130-2009-002) Review activities Army - MI Navy - MC Air Force - 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
