1、T-0-56A Dechber 22, 1970 SUPERSEDING Fed. Spec. T-0-56 November 5, i940 (See 6.3) FEDERAL SPECIFICATION OAKUM, MARINE mis specification was approved by the Commissioner, Federal Supply Service, General Services Administration, for the Use of all Federal agencies. 1. SCOPE 1.1 Scope. This specificati
2、on covers the requirements for spun type marine oakum. 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. Federal Specification: W-T-81 - Tags, Shipping an
3、d Stock. Federal Standards : Fed. Sta. NO. 123 - Marking for shipment (Civil Agencies). Fed. Test bkthod Sta No. 191 - Textile Test Methods. (Activities outside the Federal Government may obtain copies of Federal Specifications, Standards, and Handbooks as outlined under General Information in the I
4、ndex of Federal Specifications and Standards and at the-prices indicated in the Index. The Index, which includes cumulative monthly supplements as issued, is for sale on a subscription basis by the Superintendent of Documents, U.S. Government Printing Office, washington, D.C. 20402.1 (Single copies
5、of this specification and other product specifications required by activities outside the Federal Government for bidding purposes are available without charge at the General Services Administration Regional Offices in Boston, New York, Washington, D.C., Atlanta, Chicago, Kansas City, Mo., Ft. Worth,
6、 Denver, San Francisco, Los Angeles, and Seattle, Wash. (Federal Government activities may obtain copies of Federal Specifications, Standards, and Handbooks and the Index of Federal Specifications and Standards from established dis- tribution points in their agencies.) Military Specification: MIL-C-
7、3131 - Cordage; Preparation for Delivery of. Military Standards: MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specif
8、ic procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) a 3. REQUIREMENTS 3.1 Material. The finished product of this specification shall be manufactured of hemp (Cannabis Sativa) “line“ or “tow“, or from Benares Sunn fiber (Crotalaria Junce
9、a) , or a combination of these fibers. The marine oakum shall be thoroughly carded, free from lumps, dirt, and other extraneous matter. FSC 5330 I THIS DOCUMENT CONTAINS & PASES. 1 -I- -. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-T-O-5bA 53 9 9
10、77797L1 0002377 2 D T-6-56A L 3.2 Manufacture. Marine oakum shall be machine spun into slivers, whose texture shall be soft and uniform in density. It shall possess sufficient strength to sustain at least ten feet of its own weight without becoming separated at any point when tested as specified in
11、4.3.1. when tested as specified in 4.3.2. suitable grade of pine tar in an amount not less than 10 percent and not more than 25 per- cent when tested as specified in 4.3.3. 3.5 Put-u Unless otherwise specified (see 6.21, marine oakum shall be wound into balls weigdiproximately 3 to 5 pounds each. 3.
12、6 Identification ticket. Each ball of oakum shall have a ticket (identification tag) attached. 5 of UU-T-81. The ticket shall be made of not less than 15 point paper stock, and shall have a minimum tearing resistance of both directions (total) of 850 grams. The ticket shall be legibly printed, stamp
13、ed or typed with water insoluble ink. The ticket shall contain the following information: 3.3 Length per pound. The weight of the spun slivers shall be 45-55 feet per pound, 3.4 Tar content. Marine oakum shall be thoroughly and uniformly inpregnated with a The ticket shall conform to the requirement
14、s for type BI class 1, size 4 or Stock number Nomenclature Specification number Weight: Contract number and date Date of manufacture (month and year) Suppliers name 3.7 Basis of purchase. Unless otherwise specified (see 6.21, marine oakum shall be purchased on a price per pound basis gross weight, w
15、here the tare weight shall not exceed 6 percent. establishe-pecification cable quality levels established by this specification. 3.8 Workmanshi . The marine oakum shall conform to the quality and grade of product The occurrence of defects shall not exceed the appli- 4. QUALITY ASSURANCE PROVISIONS 4
16、.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection require- mnts as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facil
17、ities suitable for the performance of the inspec- tion requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and serdc
18、es conform to prescribed requirements. 4.2 Quality conformance inspection. 4.2.1 Sampling for quality conformance inspection. accordance with MIL-STD-105, except where otherwise indicated. Sampling shall be performed in 4.2.1.1 Lot. For purposes of sampling, examination and tests, a lot shall consis
19、t of marine oakum ofe same form and dimensions, produced in one plant under essentially the same conditions, and offered or delivery at one tim. At all times, the number of balls shall be the lot size. The sampling unit shall be one ball of oakum. TABLX 1. Sampling for visual examination No. of unit
20、s in lot (balls) 15 and under 16 - 50 51 - 150 151 - 500 501 and over Major Majors and minors combined Sample Acceptance No. Rejection No. Acceptance No. Rejection No. size (Defectives) (Defectives) (Defectives) (Defectives) 2 1 3 1 5 1 8 2 13 3 I 2 3 4 6 8 2 Provided by IHSNot for ResaleNo reproduc
21、tion or networking permitted without license from IHS-,-,-T-0-5hA 53 = 7777774 0002378 4 T-0-56A 4.2.2 Examination of the end item for visua defects. The defects listedin table II O shall be counted regardless of their proximity to each other except where two or more defects represent a single local
22、 condition, in which case only the more serious defect shall be counted. The unit of product for this examination shall be one ball. Ten percent of the gross length contained on each sample unit but not less than 50 feet shall be subjec ed to the visual examination. The lot size for this examination
23、 shall be expressed in units of balls. The acceptable quality level (AQL) shall be 10 major defects and 25 total defects (major and minor combined) per 100 units, in accordance with table I. The inspection level shall be S-3. TABLE 11. Visual examination defects Classi f ication Examine Defect Major
24、 Minor Appearance and Machine spun slivers nonuniform X Workmans hip in density. Excessive amounts of lumps and dirt caused by improper and inadequate Adhesion of fibers caused by local- ized non-uniform application of tar. X Adhesion of fibers caused by tar content in excess of allowable maximum. X
25、 Put-up Weight not as specified. X carding. X Identification Omitted. incorrect. illeaible ticket insecurely attached. a X - Not as specified. I X Hand written entries. X 4.2.3 Examination or weight and tare. The sample unit for this examination shall be one ball. The inspection level shall be 5-3 a
26、nd the AQL shall be 4.0 percent defective. For lots consisting of 500 or fewer units, the sample size shall be 10 and the acceptance number, one. The lot size shall be the number of units in the inspection lot. Defects shall be as specified in 4.2.3.1 and 4.2.3.2. following are found during inspecti
27、on. 4.2.3.1 Defects with regard to weight shall be considered to exist if any of the (a) Weight of unit less than marked on ticket. 4.2.3.2 A defect shall be considreed to exist if the tare exceeds the requirements 4.2,4 specified in 3.7. made to determine that packaging, packing, and marking requir
28、ements of section 5 of this specification are complied with. The examination shall be in accordance with the provisions of MIL-C-3131, except that the inspection level shall be 5-2 and the AQL shall be 2.5 Examination of preparation for delivery requirements. An examination shall be defects per 100
29、units. 4.3 Testing of the end item. The methods of testing specified in table IV shall be followed. The physical and chemical values specified in section 3 apply to the average of the determinations made on a sample unit for test purposes as specified in the applicable test methods. All test reports
30、 shall contain individual values utilized in expressing the final result. The lot shall be unacceptable if one or more units fail to meet any require- ment. The lot size, expressed in balls, sample size and the acceptance and rejection numbers shall be in accordance with table III. TABLE III. sampli
31、ng for tests No of units in lot (balls) 15 and under 16 - 50 51 - 150 151 - 500 501 and over No. of 3 5 8 13 Acceptance No. for each Rejection No. for each test characteristic test characteristic I 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-T-
32、O- 5 6A 4.3.1 Determination of sliver strength. To preclude the possibility of obtaining erroneous results, carefully and slowly remove a minimum length of 10 feet from the ball without applying tension. tion, allowing the designated length to suspend freely and unhampered in air. The sliver shall b
33、e of such composition that it will withstand its own weight without becoming separated. 4.3.2 Determination of length per pound. While exercising care not to cause any damage to the sliver, unwind from the ball, carefully and slowly, at least 10 feet of it across a smooth table top or flat surface.
34、The actual length of the sliver shall be meas- ured, cut from the ball, and wieghed. The length per pound shall then be calculated by using the following formula: The ball shall be held between both hands in a horizontal posi- L = feet per pound Fi L = length in feet W = weight in pounds where TA13L
35、E IV. Test methods I I Results reported as I No. of determinations Characteristic reference Teat nethod par. I per sample unit Requirement I I _ - Breaking length 3.2 4.3.1 5 Pass or fail Feet per pound 3.3 4.3.2 3 Avg. of 3 de- terminations to nearest foot, Tests to determine compliance with specif
36、ication requirements , includinq weight of delivery, may be made under prevailing atmospheric conditions except in settlement of dispute, in which case the tests shall be made using material, which has reached equilibrium under Standard Conditions as defined in Fed. Test tkthod Std. No. 191. 4.3.3 D
37、etermination of tar content. 4.3.3.1 Routine test. A sample containing approximately 10 grams of oakum shall be taken and accurately weighed. The sample shall be placed in a Soxhlet extraction apparatus (or equal), and extracted with diethylether. The diethylether is then evaporated off and the resi
38、due dried, cooled, and weighed. The difference between the final weight and the weiqht of the empty flask is the weight of the soluble material, and the percentage of the weight of the original sample which the weight of soluble material represents is calculated and considered as tar content. 4.3.3.
39、2 Um ire test If results obtained by methods meeting the requirements of 4.3.3.1 are dbtar content shall be determined by the following umpire test, and tho results shall be considered final. A sample containing approximately 10 grams of oakum ahall be taken and conditioned to constant weight at 20
40、to 25OC. and at 50 to 65 percent relative humidity. After accurately determining the final weight, the sample shall be placed in a Soxhlet extraction apparatus and treated with diethylether for a period of 6 hours at an extraction rate which fills and empties the extraction tube at least 12 times an
41、 hour. The diethylethex extract is collected in a weighed flask and the bulk of the diethylether is first distilled off and the remainder evaporated off over a steam bath. The residue is dried for one hour at 10So to 110OC. The flask is then cooled in a desiccatox and weighed. The difference between
42、 the final weight and the weight of the soluble material, and the percentage of the weight of the original sample which the weight of soluble material represents is calculated and considered as tar content. 5, PREPARATION FOR DELIVERY (The preparation or delivery requirements specified herein apply
43、only for direct Government procurements.) 5.1 Packa ins and ackin Packaging and packing shall be as specified in MIL-C-3131. Packaging shallg& levelP* or z, and packing shall be level A, BI or as specified (see 6.2) Provided by IHSNot for ResaleNo reproduction or networking permitted without license
44、 from IHS-,-,-T-0-5bA 53 = 7997774 0002YOO 7 T-0-56A 5.2 Marking. 5.2.1 Military activities. In addition to any special markings required by the con- 5.2.2 Civil agencies. In addition to any special markings required by the contract tract or order (see 6.21, marking shall be in accordance with MIL-S
45、TD-129. or order (see 6.21, exterior and interior containers shall be marked in accordance with the requirements of FED-STD-123. 6. NOTES 6.1 Intended use. The marine oakum covered by this specification is intended to be used for caulking boats and ships. 6.2 Ordering data. Purchasers should select
46、the preferred options permitted herein, and include the following information in procurement documents: (a) Title, date, and number of this specification. (bl Put-up, if other than specified (see 3.5). (c) shortened or cut for test specimens, if in compliance with this speci- fication (see 3.7). (d)
47、 (e) Special marking, if required (see 5.2). That purchaser will accept at original weight, any unit which has been Selection of applicable levels of packaging and packing (see 5.1). 6.3 Class 2 available. unspun marine oakum specified in T-0-56 is no longer commercially IKCLITARY CUSTODIANS: Army -
48、 MR Navy - SH Air Force - 82 Review activities: Army - Navy - SH, SA Air Force - 2 EA- IS *U. S. GOVYWWENT PXNTING OFFICE : 1971 O - 436-360 ( 2309 ) User activities : Am - 143 Navy - MC, D Preparing activity : Navy - SH Orders for this publication are to be placed with General Services Administration, actlng as an agent for the Superintendent of Documents. documents referenced herein. Price10 cents each. See Section 2 of this specification to obtain copies and other 5 d Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
