NAVY MIL-V-81523 A-1969 VEST SURVIVAL EQUIPMENT TYPE SV-2A《SV-2A型救生衣》.pdf

《NAVY MIL-V-81523 A-1969 VEST SURVIVAL EQUIPMENT TYPE SV-2A《SV-2A型救生衣》.pdf》由会员分享，可在线阅读，更多相关《NAVY MIL-V-81523 A-1969 VEST SURVIVAL EQUIPMENT TYPE SV-2A《SV-2A型救生衣》.pdf（14页珍藏版）》请在麦多课文档分享上搜索。

1、MI L-V-81523A(AS) 17 Januarv 1969 SUPERSEDING MI LV- 8 152qAS) - 13 March 1967 MILITARY SPECIFICATION VEST, SURVIVAL EQUIPMENT, TYPE SV-2A This specification has been approved by the Naval Air Systems Command, Department of the Navy. 1. SCOPE 1.1 This specification covers requirements for one type a

2、nd size of survival equipment vest designated as Type SV-2A. 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 this specification to the extent speci- fied herein. SPECIFICATIONS Federal TT-1-542 UU-P-268

3、 PPP-B-636 PPP-T -45 Ink, Marking, Laundry, Black Paper, Kraft, Untreated, Wrapping BOX, Fiberboard Tape, Gummed, Paper, Reinforced and Plain, For Sealing and Securing STANDARDS Federal FED-STD-751 Stitches, Seams, and Stitching Licensed by Information Handling ServicesMIL-V- 8 1523A (AS) . STANDARD

4、S (Continued) . . _- .c *. Military MIL-STD-105 . Sampling Procedures and Tables for inspection by Attrlbutes MIL-STD- 129 Marking for Shipment and Storage DRAWINGS Naval Air Systems Command 67AlOOC1 . Parts index - Type W-2A Survid Equipment Vest 67A 100D2 Vest Assembly, Survival Equipment, Type SV

5、-2A (When requesting any of the applicable documents, refer to both title and num- ber. Aii requeste should be made via the cognizant Govermerit quality assurance representative. Copies of this specification and other unclassified specifications, standards, except for the hook and pile fastener tape

6、s, shall be seared, prior to the fabrication of the vest, to prevent fraying. No sharp edges shall be formed. The cut edges of .he nylon duck cloth shall be overedged stitched (serged), 3.3.2 Seams and stitching -All the seams used in the fabrication of the vest shall conform to the applicable drawi

7、ngs. Except for the serging (overedge) and zig-zag stitching, the stitching in the vest shall be accomplished with Stitch Type 301. The 2 Licensed by Information Handling ServicesI overedge stitching shall be accomplished with Stitch Type 502, 503, 504, or 505, and the zig-zag stitching shall be acc

8、omplished with Stitch Type 304. The width of the overedge and zig-zag stitching shall be approximately 1/4 inch. All the stitch types shall conform to FED-STD-751 and shall contain 6 to 8 stitches per inch. All the seam edges shall be properly forced out and shall not contain any folds. No seam shal

9、l be twisted, puckered, or pleated and no part of the vest shall be caught in an unrelated operation or seam. All the thread ends shall be trimmed to a length of 1/4 to 3/8 inch and except for the webbing, cord, and tape, excluding the binding tape, no raw or cut edge shall be visible on the exterio

10、r of the vest. The cut edges of the binding tape shall be turned under. 3.3.2.1 Sewing - Each row of stitching shall be straight and parallel to the seam edge. The straightness of the stitching, in any row, shall be maintained within a tolerance of plus or minus 1/32 inch. The ends of the stitching

11、that are not caught in ther seams or stitching shall be securely backstitched, by overlapping on them- selves, for at least 1/2 inch. Thread breaks, skips, and run-Offs shall be over- stitched not less than one inch. The thread tension shall be maintained so that there shail not be any loose or tigh

12、t stitching and the lock shall be embedded in the materials sewn together. . 3.3.2.2 Bartacking - The number of stitches per bartack shall be based proportionally on 1/2 inch long bartack containing a minimum of 28 stitches. The location and length of the bartacks shall conform to the applicable dra

13、wings. 3.4 - Color - The color of the vest and the components shail be as specified in the applicable drawings. The main panels of the vest shall approximate each other in shade. 3.5 Dimensions - The dimensions of the assembled vests, width of the seams and hems, and the dimensions and location of t

14、he components shall conform to the applicable drawings, when determined as specified in 4.5.2. 3.6 Marking - Unless otherwise specified, the markings on the vest shall conform to 67A100D2 and shall be legible and durable black letters and numerals which shall be thoroughly dry, prior to packaging. T

15、he marking ink shall conform to TT-1-542. 3.7 Workmanship - After completion of the final assembly, the vests shall be thoroughly cleaned and all loose thread, lint, and foreign matter shall be removed. The rivets, grommets, and snap fasteners shall be clinched without dis- tortion, damage, splittin

16、g, or cutting of the leather, cloth, webbing, or tape, as applicable, The metal components shall not be misaligned nor contain any sharp edge, crack, dent, nick, burr, or sliver. The vests shall not contain any non-speci- fied hole, abraded area, tear, cut, mend, needle chew, spot, or stain. The ves

17、ts shall conform to the quality and grade of product established by this specification. The occurrence of defects shall not exceed the acceptance criteriaestablishedherein. 3 Licensed by Information Handling ServicesMIL-V-L523A 9 W 777770b 04961157 O z iT MI L-V- 8 1523A(AS) 4. QUALITY ASSURANCE PRO

18、VISIONS 4.1 Responsibility for inspection - Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of ail inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any ot

19、her facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspec- tions set forth in the specification where such inspections are deemed necessary to assure supplies and s

20、ervices conform to prescribed requirements. 4.2 Classification of inspection - The examination and testing of the Type SV-2A survival equipment vests shall be classified as follows: (a) First article inspection - First article inspection consists of examinations and tests performed on samples which

21、are . representative of the production item after the award of a contract to determine that the productioi) item conforms to the requirements of this specification (see 3.1 and 4.3 through 4.3.2). ) Quality conformance inspection - Quality conformance inspec- tion consists of examinations and tests

22、performed on individual products or lots to determine conformance of the products or lots with the requirements set forth in this specification (see 4.4 through 4.4.1.2). 4.3 First article inspection - The first article inspection of the Type SV-BA survival equipment vests shall consist of examinati

23、ons and tests for all of the requirements of this specification. 4.3.1 First article samples - Unless otherwise specified, as soon as practicable after the award of the contract or order, the manufacturer shall submit three assembled vests. The samples shall be representative of the construction, wo

24、rkmanship, components, and materials to be used during production. When a contractor is in continuous production of these vests from contract to contract, submission of further first article samples on the new contract may be waived at the discretion of the procuring activity (see 6.2). Approval of

25、the first article samples or the wiving of first article inspection does not preclude the requirements of per- forming the quality conforniance inspection; The first article samples shall be furnished to the Government as directed by the contracting officer (see 6.2). 4.3.2 Upon COmpleti6n of the fi

26、rst article inspection, all the applicable inspection reports and when applicable, recommendations and comments pertinent for use in monitoring production will be forwarded to the cognlzant Government activity. One of the approved first article inspectioii sarnpc vests will. be returned 4 Licensed b

27、y Information Handling ServicesMIL-V-81523A(AS) . . . to the manufacturer for use in monitoring production. The other two vests will be consumed or destroyed in the first article inspection and shall not be considered as part of the quantity to be delivered under the contract. 4.4 Quality conformanc

28、e inspection - The sampling and inspection levels shall conform to MIL-STD-105. The quality conformance inspection shall consist of the following: Visual examination of the vests Dimensional check of the vests Preparation for delivery 4.4.1 Sampling - 4.4.1.1 Inspection lot - 4.4.1.1.1 Vests - An in

29、spection lot size shall be expressed in units of one. vest made essentially under the same conditions and from the same materials and components. The sample unit shall be one vest. 4.4.1.1.2 Preparation for delivery - An inspection lot size shall be expressed in units of one fully prepared shipping

30、container, containing vests, fully prepared for delivery from essentially the same materials and components. The sample unit shall be one shipping container, containing vests. fully prepared for delivery with the ex- ception that it need not be sealed. 4.4.1.2 Sampling for examinations and tests of

31、the vests - The sample size, acceptance criteria, examinations, and tests required for the vests shall be as specified in Table I. 4.5 Inspection methods - 4.5.1 Visual examination - 4.5.1.1 Vests - Each of the vests, selected as a sample unit from the lot, shall be thoroughly checked di. cnsionally

32、 and examined visually to determine con- formance to this specification. The classification and list of defects, Tables II and III, as applicable, shall he used to classify and enumerate the defects found. Licensed by Information Handling ServicesTABLE I SAMPLE SIZE, ACCEPTANCE CRITERIA, EXAMINATION

33、S, AND TESTS OF THE VESTS An acceptable quality level of 2.5 defects per 100 units for major defects, 15.0 de- fects per 100 units for major plus minor A defects, and 25.0 defects per 100 units for total (major, minor A, and minor B combined) 1 defects PARAGRAPH I Visual. examination 3.3 through 3.4

34、, 3.6, 3.7, and applicable drawings Dimensional check 3.5 METHOD Preparation for delivery 4.5.1.1 and Table II Section 5 4.5.1.1, Table DI, and4.5.: 4.5.1.2 and Table N SAMPLE SIZE ACCEPTANCE CRITERIA Inspection Level II TABLE II CLASSIFICATION OF DEFECTS FOR THE VISUAL EXAMIEATION OF TKE VESTS DEFE

35、CT GENERAL a. Any non-specified hole, scissors or knife cut, tear, mend, burn, or weakening defect such as smash, multiple float, loose dub, needle chew, or abraded area Color of any component not as specified Opposite sides of each main panel do Kot approximate each other in shade or any shade bar,

36、 spot, or stain b. C. I MAJOR X - . . - i/ Mn A - Licensed by Information Handling ServicesMIL-V-8 1523A(AS) TABLE II (Continued) . . DEFECT GENERAL (Cont hued) d. e. f. g* h. i. j. k. Any thread end not trimmed to a length of 1/4 to 3/8 inchor loose thread ends not removed Any cut edge of the nylon

37、 cord, webbing, or tape, except for the hook and pile fastener tapes, not seared or any sharp edge formed by the searing Any cut edge of the nylon ducknot overedged stitched (serged) Any cord or webbing used for the harness, belt, strap, or ammunition keeper not fabricated from one continuous length

38、 Any open scratches, scars, brands, damaged grain, grub holes, hip +rss, at wrinkles, scars in the leather of the leatherssheath, or the leather is bony or flankey Leas than 25 percent of the hooks or pile flattened or mise- ing from any fastener tape closure area 25 percent or more of the hooks or

39、pile flattened or missing from any fastener tape closure area Any hook or pile tape misplaced, not serving the intended purpose METALLIC COMPONENTS a. b. C. d, e. Any surface rough, misaligned, or contains any crack, nick, burr, sharp edge, dent, or sliver Any surface unclean or contains embeddedfor

40、eign matter Any loose, detached, or otherwise not securely retained Any malformed, corroded, fractured, broken, chipped, bent, or distorted Any improperly finished or finish missing MAJOR MINOR A - IL R c - B - X X 7 Licensed by Information Handling ServicesMIL-V-81523A 84 777770b 044b4bL 2 MIL-V-81

41、523A(AS) TABLE II (Continued) DEFECT METALLIC COMPONENTS (Continued) f. Any rivet, snap fastener, or grommet misplaced or improp- erly clinched resulting in cutting of the leather, cloth, tape, or webbing, as applicable g. Any snap fastener mismatedy h. Any part of the slide fastener assembly bent,

42、broken, slider not located at specified position, when the slide facltener is closed, or the movement of the slider is interfered with3 i. Pistol pocket snap fastener does not open in the specified drec tion COMPONENTS AND ASSEMBLY a. Any component not as specified or any defect of a component or de

43、feat of assembly not herein classified b. Any component, component part, or required operation omitted or any operation improperly performed not herein classified SEAMS AND STITCHING B. Accuracv of Seamina: 1. Any seam, hem, or attachment of any component twisted, puckered, pleated, or caught in an

44、unrelated operation or stitching; any seam edge not properly forced out or contains any fold 2. Ends of stitching that are not caupht in other seams or - _ stituhing (a) Not securely backstitched ) Secure but backatitched for a distance less than 1/2 inch (c) Backstitching not overlapped on itself a

45、 U JOR X X I/ - i/ X Licensed by Information Handling ServicesMIL-V- 8 1523A (AS) TABLE II (Continued) . . . DEFECT SEAMS AND STITCHTNG (Continued) b. C. d. e, 3. Thread breaks: (a) Not securely overstitched (b) Secure but overstitched for a distance less than one inch Gam of stitching;A/: 1. Any st

46、itching irregular, unevenlygaged, or various stitchings not uniform Open seams s/: i. Other than on any hem: (a) Up to and including 1/4 inch (b) More than 1/4 inch but not more than one inch (c) More than one inch 2. On any hem: (a) 1/2 inch or less (b) More than 1/2 inch Raw edges g/: 1. More than

47、 1/4 inch but not more than one inch 2. More than one inch Seam and stitch tyue: 1. Not specified seam or sti,? MAJOR X X - i/ MINOR - A X X X X - B - X X X X Licensed by Information Handling ServicesTABLE II (Continued) DEFECT SEAMS AND STITCHING (Continued) f. Stitch tension ?/: 1. Loose tension r

48、esulting in a loose seam or tight tension resulting- in breaking of the stitches, when normal pull is applied g. Stitches per inch information on the label in the polyethylene bag not readable through the film or no label in the polyethylene bag. The stitches per inch defects shall be scored oniy, w

49、hen the condition exiats on the major portion of any row of stitching. TABLE Ei TABLE N 11 Licensed by Information Handling ServicesML-V- 8 1523A(AS) TABLE- IV (,Continued) ITEM Mate rials Workmanship Exterior and interior we igk or content - DEFECT Any non-conforming component; any component or component part missing, damaged, or otherwise defective. Inadequate application of the components such as incomplete closure of the unit package, container flaps, loose strappings, etc. ; bulging or distortion of the containers; exterior con- tainers contain metal fastenings or stitch