NAVY MIL-P-24752-1990 PACKING MATERIAL FLAX OR HEMP《亚麻或纤维包装材料》.pdf

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1、p - 1 I INCH- POUND MIL-P-24752 (SH) 1 October 1990 SUPERSEDING HH-P-106 July 14, 1948 HH-P-lO6d 18 May 1956 Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command,

2、 SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. MILITARY SPECIFICATION PACKING MATERIAL, FLAX OR HEMP This specification is approved for use by th

3、e Naval Sea Systems Command, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers flax or hemp packing material for use in hot or cold water, brine and fuel oil systems (see 6.1). 1.1.1 Specificat

4、ion coveracle. This specification does not cover all types, classes and sizes of flax or hemp packing material, but only those most generally used by the Government. 1.2 Classification. Flax or hemp packing material shall be of the following classes, as specified (see 6.2). Class 1 - Flax. Class 2 -

5、 Hemp. Class 3 - Flax and hemp. 1.2.1 Sizes. The packing material shall be furnished in the sizes specified (see 6.2). 2. APPLICABLE DOCUMENTS 2.1 Government documents. e. ? DISTRIBUTION STATEMENT A. Approved for public release; distribution . is unlimited. Provided by IHSNot for ResaleNo reproducti

6、on or networking permitted without license from IHS-,-,-2.1.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Departmen

7、t of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL 0-E-751 - Ether, Petroleum; Technical-Grade. SS-G-659 - Graphite; Dry (Lubricating). PPP-F-320 - Fiberboard: Corrugated and Solid, Sheet Stock (Container Gr

8、ade) and Cut Shapes. MILITARY MIL-L-19140 - Lumber and Plywood, Fire Retardant Treated. STANDARDS FEDERAL FED-STD-191 - Textile Test Methods. FED-STD-791 - Lubricants, Liquid Fuels, And Related Products; Methods of Testing. MI LI TARY MIL-STD-2073-1 - DoD Materiel Procedures for Development and Appl

9、ication of Packaging Requirements. (Unless otherwise indicated, copies of federal and military specifications and standards are available from the Standardiza- tion Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following docume

10、nt forms a part of this document to the extent specified herein. Unless otherwise specified, the issue of the document which is DoD adopted is that listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues

11、 of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3951 - Standard Practice for Commercial Packaging. (DOD adopted) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I c f MIL-P-24752 (SH) (Appl

12、ication for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be av

13、ailable in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regul

14、ations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Material. The packing materials shall be composed of cleaned flax or hemp (cannabis sativa) fibers and a pure lubricant free from rancidity. 3.2 Lubricant. The packing material shall be thoroughly and evenly impregnated with t

15、he lubricant. The finished packing material shall contain not less than 35 nor more than 45 percent, by weight, of lubricant (see 4.4.2). 3.2.1 Oleic acid. The lubricant shall contain not more than the equivalent of 5.5 percent oleic acid (see 4.4.3). 3.2.2 Saponification number. The saponification

16、number of the lubricant shall be not less than 185 nor more than 198 (see 4.4.4). 3.3 Fiber class . The class of fiber shall be as specified in 3.3.1 through 3.3.1.2. 3.3.1 Class 1, flax. Class 1 packing material shall be made from flax fibers. 3.3.1.1 Class 2, hemp. Class 2 packing material shall b

17、e made from hemp fibers. 3.3.1.2 Class 3, flax and hemp. Class 3 packing material shall be made from a mixture of flax and hemp fibers. 3.3.2 Fiber strenclth. The strength of the fiber shall be not less than 100 kilograms per gram per centimeter of length (see 4.4.5). 3.4 Construction. Packing mater

18、ial shall be either braided and squared, or rounded. a - 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24752 53 U 777770b 0453234 4 MIL-P-24752 (SH) 3.5 Size and weisht. The packing shall be furnished in the sizes shown in table I, as speci

19、fied (see 6.2). The weight per linear yard of square packing, after the lubricant has been extracted shall be not less than that shown in table I. The weight of round packing is found by multiplying the weight of the corresponding size of square packing by 0.8. TABLE I. Size and weisht of packinq. S

20、ize of packing . Inches 1/8 1/ 4 3/8 1/ 2 5/8 3/4 7/8 3/16 5/16 7/16 9/16 11/16 13/16 15/16 1 1- 1/8 1- 1/4 1- 1/2 1- 3/4 2 Weight per linear yard, minimum Pounds 0.012 .030 .054 .082 .12 .16 .21 .27 33 .40 .48 .57 .66 .75 .84 1.08 1.35 1.80 2.25 2.65 3.6 Packincl coated with sraphite. When packing

21、coated with Graphite packing shall not be used in seawater of brine graphite is required (see 6.2), it shall be in accordance with SS-G-659. solutions. 3.7 Workmanship. Packing material shall meet the requirements of this specification. Emphasis shall be on the quality of the packing material. 4. QU

22、ALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or

23、purchase order, the contractor may use 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24752 (SH) I Number of coils or spools in lot his own or any other facilities suitable for the performance of the inspection requirements specified herein,

24、 unless disapproved by the Government. the inspections set forth in the specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. The Government reserves the right to perform any of Number of coils or spools in sample 4.1.1 Responsi

25、bilitv for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification shall not relieve the

26、contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance comply with all requirements of the contract. Sampling inspection, as part of the manufacturing operations, is an acceptable practice to ascertain conformance to requirements, howeve

27、r, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective material. 4.2 Samplinq. 4.2.1 Inspection lot. An inspection lot shall consist of all finished packing material of one class and size, produced under th

28、e same conditions, and offered for delivery at one time. 4.2.2 Samplinq for visual and dimensional inspection. A random sample of coils or spools shall be selected from each inspection lot offered for inspection of visual and dimensional characteristics in accordance with table II. TABLE II. Samplin

29、q for visual and dimensional inspection. 65 and under 66 to 180 181 to 300 301 to 500 501 to 800 801 to 1300 1301 and over 7 25 35 50 75 110 150 4.2.3 Samplinq for lot acceptance tests. Four representative coils or spools of packing materials shall .be selected at random from each inspection lot. Ea

30、ch sample coil or spool shall be selected from a different box. From each sample coil or spool, a 24-inch specimen shall be cut off for the tests specified in 4.4. For 1/8 and 3/16 inch sizes, a sample 24 inches long of the 5 Provided by IHSNot for ResaleNo reproduction or networking permitted witho

31、ut license from IHS-,-,-MIL-P-24752 (SH) MIL-P-Zq752 53 777770b 0453236 = untreated flax or hemp shall be selected from the lot used in the manufacture of the packing material for the test specified in 4.4.1. 4.3 Inspection and tests. 4.3.1 Visual and dimensional inspection. Each of the sample coils

32、 or spools selected in accordance with 4.2.2 shall be visually and dimensionally inspected to verify compliance with this specification (see 6.3). Any coils or spool in the sample containing one or more visual or dimensional defects shall be rejected and the lot which it represents shall be rejected

33、. 4.3.2 Lot acceptance tests. Each sample specimen selected in accordance with 4.2.3 shall be subjected to the tests specified in 4.4. If any specimen tested is found to be not in conformance with this specification, the lot which it represents shall be rejected. 4.4 Tests. 4.4.1 Weiqht. Each specim

34、en shall be carefully weighed and measured. From the weight and measurement obtained here and the lubricant content of the packing material obtained in 4.4.2, the average weight per linear yard of the packing material after the lubricant has been extracted shall be calculated. 4.4.2 Lubricant. A spe

35、cimen weighing 25 and marking for shipment, stowage, and storage shall be in accordance with the requirements of section 5 and the documents specified herein. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24752 53 = 7779706 0453238 Lm MIL-P-2

36、4752 (SH) 5. PACKAGING . 5.1 General. 5.1.1 Navy fire-retardant reuuirements. (1) Treated lumber and plywood. Unless otherwise specified (see 6.2), all lumber and plywood including laminated veneer material used in shipping container and pallet construction, members, blocking, bracing, and reinforci

37、ng shall be fire-retardant treated material conforming to MIL-L-19140 as follows: Levels A and B - Type II - weather resistant Category I - general use Level C - Type I - nonweather resistant Category I - general use (2) Fiberboard. Fiberboard used in the construction of interior (unit and intermedi

38、ate) and exterior boxes including interior packaging forms shall conform to the class-domestic/fixe retardant or class- weatherresistant/fireretardantmaterials require- ments as specified (see 6.2) of PPP-F-320. 5.2 Preservation. Preservation shall be level A, C, or commercial as specified (see 6.2)

39、. 5.2.1 Level A. as specified herein. Packing shall be put-up on spool or in coils 5.2.1.1 Spools. Packing in diameter of 5/16 inch or less, Size of packinq Lensth of sool shall be uniformly coiled and secured on spools as follows: Inch Linear yards 1/8 200 5/16 120 3/16 150 1/ 4 134 5.2.1.2 Coils.

40、Packing in diameters of 3/8 inch or greater shall be uniformly coiled and secured in individual lengths as f 01 lows : 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3/8 1/2 5/8 3/4 7/8 7/16 9/16 11/16 13/16 15/16 1 1- 1/8 1- 1/4 1- 1/2 1- 3/4 2 N

41、IL-P-zLI752- 53 W 9999906 - 0453239p3B MIL-P-24752 (SH) Size of Length of each Number of coils packing coil a box Inches Linear yards 9 8 7 6 5 5 5 5 4-1/2 4-1/2 4-1/2 4 4 4 4 4 8 8 6 6 5 5 4 4 3 3 3 3 2 2 1 1 5.2.1.3 Unit pack. Each spool or set of coils shall be wrapped in an opaque or transparent

42、 waterproof, greaseproof, flexible barrier material and sealed. Each wrapped set of coils or each spool shall be placed in a water resistant folding, setup, or metal edged paperboard or a class-weather resistant/fire retardant fiberboard (see 5.1.1 (2) ) box meeting the unit and intermediate contain

43、er requirements of MIL-STD-2073-1. The container selection shall be at the option of the contractor. e 5.2.2 Level C. Packing shall be preserved as specified under level A except that the interior boxes shall be as follows: (a) The paperboard containers shall be of the domestic or nonweather resista

44、nt type, class, or variety as applicable and, (b) The fiberboard containers shall be of the class- domestic/fire retardant material (see 5.1.1(2). The box closure shall be in accordance with method I using pressure sensitive adhesive tape. 5.2.3 Commercial. Commercial packaging (cleaning, preser- va

45、tion, and unit package) shall be in accordance with ASTM D 3951. 5.3 Packinq. Packing shall be level A, B, C or commercial as specified (see 6.2). 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-24752 53 W 797970b 0453240 T W - - MIL-P-24752

46、(SH) 5.3.1 General requirements for levels A. B and C. Containers selected (see 5.3.2), shall be of minimum weight and cube consistent with the protection required, or uniform size, and contain identical quantities of identical material. 5.3.2 Levels A, B and C containers. Packing preserved as speci

47、fied (see 5.2), shall be packed in exterior shipping containers for the level of packing specified (see 5.3) , in accordance with MIL-STD-2073-1, and herein. Unless otherwise specified (see 6.2), container selection shall be at the contractors option. 5.3.2.1 Caseliners, closure and qross weiqht. 5.

48、3.2.1.1 Caseliners. Unless otherwise specified (see 6.2), level A shipping containers containing packing preserved level C or commercial shall be provided with waterproof caseliners in accordance with MIL-STD-2073-1. 5.3.2.1.2 Closure. Container closure, reinforcing, or banding shall be in accordanc

49、e with the applicable container specification or appendix thereto except that weather-resistant fiberboard boxes shall be closed in accordance with method V and reinforced with nonmetallic or tape banding and domestic or domestic/fire retardant fiberboard boxes shall be closed in accordance with method I using pressure sensitive tape. 5.3.2.1.3 Weiqht. Wood, plywood, and cleated type containers exceeding 200 pounds gros