1、MIL-C-2475b 42 77737Ob OY574b7 3 W I INCH-POUND I 9 November 1990 MIL-C-24756 (SH) MILITARY SPECIFICATION CURTAINS AND BLANKETS, SMOKE, PORTABLE This specifcation is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all depaifments and agencies of
2、 the Department of Defense. I. SCOPE 1.1 Scope. This specification covers the requirements and tests for portable smoke curtains and blankets, a generic term for which is used herein is “barriers.“ The barriers are intended as an aid in fighting shipboard fires. 1.2 Classification. Portable smoke ba
3、rriers- shall be of the following classes (see 6.2): Class I - Two-panel curtain Class II - One-piece blanket. 2, APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the
4、extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2). I I Beneficial comments (recommendations, addition
5、s, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document improvement Proposal (DD Form 1426) appea
6、ring at the end of this document or by letter. AMSC NIA FSC 4210 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-24756 Li2 W 9999906 04574b 5 W c i MILC-24756(SH)
7、 SPECIFICATIONS FEDERAL DDD-L-20 PPP-B-636 PPP-c-795 PPP-F-320 MILITARY MIL-(2-24757 MIL-P-116 Label: For Clothing, Equipage, and Tentage (General Use) Boxes, Shipping Fiberboard Cushioning Material, Packaging (Flexible, Closed Cell, Plastic Film For Long Shipping Cycle Applications) Fiberboard, Cor
8、rugated and Solid, Sheet Stock (Container Grade) and Cut Shapes Cloth, Fiberglass, Coated Preservation, Methods of MILL-19140 Lumber and Plywood, Fire Retardant Treated MIL-F-21840 Fastener Tapes, Hook and Loop, Synthetic STANDARD FEDERAL FED-STD-751 MILITARY MIL-STD-105 Stitches, Seams, and Stitchi
9、ng Sampling Procedures and Tables for Inspection by Attributes MILSTD-2073-1 DoD Materiel Procedures For Development and Application of Packaging Requirements (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization D
10、ocuments Order Desk, Building 4D, 700 Robbins Avenue, Philadeladelphia, PA 19111-5094) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5 MIL-C-24756 42 m 7779906 O457469 7 U 2.1.2 Other Government documents, drawings, and publications. The followin
11、g other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS NAVAL SEA SYSTEMS COMMAND (NAVSEA) 803-5959318 Curtain, Smoke, Portable (Two Panel and Blanket) (
12、Application for copies should be addressed to the NAVSEA Microfilming Repository, Portsmouth Naval Shipyard, Portsmouth, NH 03801.) 2.2 Non-Government publications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the do
13、cuments which are DOD adopted are those 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 of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3
14、951 D 4030 Standard Practice For Commercial Packaging (DoD Adopted) Standard Specification for Glass Fiber Cord and Sewing Thread (Application for copies should be addressed -to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103). (Non-government standards and o
15、ther publications are normally available from the organizations that prepare or distribute the documents. These documents may also be available 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 refe
16、rences cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 General, The portable smoke barriers (whether curtains or blankets) shall have the equipme
17、nt and materials necessary to contain smoke aboard Navy ships. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- I flIL-,C-24756 42 9999906 0457470 3 m c 3.2 First article. When specified (see 6.2), a sample shall be subjected to first article a ins
18、pection (see 6.4), in accordance with 4.3. 3.3 Guide sample. Samples furnished by the Government are solely for guidance and information to the contractor. Variations from the purchase description may appear in the sample in which case the acquisition document shall govern. Requests for access to sa
19、mples shall be addressed to the activity issuing the invitation for bids. 3.4 Components. Components used in the construction of the portable smoke barrier shall meet the performance requirements specified herein. 3.4.1 Basic material. Material for the portable smoke barriers shall be as specified h
20、erein and the material requirements of MIL-C-XX328(SH). 3.4.2 Reflective tape. Reflective tape shall be 3M style 8486, fluorescent red-orange, 2 inches wide, or equal (see 6.3 and 6.5). 3.4.3 Thread. Thread for stitching smoke barriers shall be fiberglass conforming to ASTM D 4030 and shall have dia
21、meter not less than 0.016 inch nor more than 0.021 inch. 3.4.4 Hook and pile fastener tape. Hook and pile fastener tape shall be 2 inches wide and conform to type 1, class 1, color 3054, of MIL-F-21840. 3.4.5 Label. Each portable smoke barrier shall have an identification label made of Nomex paper o
22、r equal, conforming to type VI, class 5 of DDD-L-20. The fastness to laundering requirement of DDD-L-20 shall apply. Labels shall bear the following inscrip tion: CURTAIN OR BLANKET, SMOKE, PORTABLE CONTRACT NUMBER: STOCK NUMBER: LAUNDERING INSTRUCTIONS: USE NAVY WASH FORMULA II, CONTRACTORS NAME: S
23、HIPPING LN: NAVEDTRA 414-01-45-81 3.4.6 Spring clamp. The spring clamp shall be made of steel, weigh less than 0.5 pound, have an overall length of 5 to 7 inches, and have a clamping force of 33 to 37 pounds per square inch and an opening of not less than 2 inches (see 6.3 and 6.5). 3.4.7 Chain. The
24、 chain shall be made of brass, zinc or plated steel; have 5/16-inch links; and weigh 1 pound per foot. The sleeve holding the chain shall be secured to the bottom of the two panel curtain by a sewn vertical tack at both ends of the hem stich. Cadium Plating is excluded as a coating for the chain. (s
25、ee 6.3 and 6.5) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I 3.5 Design. The two panel and blanket portable smoke barriers shall be constructed in a accordance with Drawing 803-5959318. 3.6 Construction. 3.6.1 Stitches, seams, and stitching. S
26、eams and stitching shall conform to FED-STD-751 as follows: Seams Seam types shall conform to figure 1 of FED-STD-751. Hem seams shall be in accordance with detail 8-A of Drawing 803-5959318. 3.6.1.1 Type 301 stitching (6 to 10 stitches per inch). Ends of stitching shall be back stitched or back tac
27、ked not less than 1/2-inch except where ends are caught in other seams and stitching. Thread tensions shall be maintained so that no loose or excessively tight stitching shall result in puckering of the materials sewn. 3.6.1.2 Stitching spacing gauge. The stitching spacing gauge shall be 3/8 f 1/16-
28、inch. 3.6.2 Thread ends. Thread ends shall be trimmed to length not more than 0.25 inch. 3.6.3 Shade marking. Component parts shall be marked, ticketed, or bundled to ensure a uniform shade throughout the portable smoke barrier. The use of ink pad numbering machine, rubber stamp, or pencil is accept
29、able provided that marks shall not show through the outside of 0 the portable smoke barrier. 3.7 Recovered material. Unless otherwise specified herein, all equipment, material, and articles incorporated in products covered by specification shall be fabricated from new materials or recovered material
30、s to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have bem collected or recovered from solid waste and reprocessed to become a source of raw materials as opposed to virgin raw materials. None of the above shall be interpre
31、ted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specified. 3.8 Workmanship. product established herein. Portable smoke curtains and blankets shall conform to the quality of 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Un
32、less 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 purchase order, the contractor may use his own or any other facil
33、ities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-2475b 42 M 977770b 0457472 7 the right to perfor
34、m any of the inspections set forth in this speciFication where such inspections are deemed necessary to ensure supplies and services conform to prescribed requirements. 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this sp
35、ecification 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 contractor of the responsibility of ensuring that all products or supplies submitted to the Government for acceptance
36、 comply with all requirements of the contract. Sampling inspection, as part of the manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the
37、 Government to accept defective material. 4.2 Classification of inspection. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3) b. Quality conformance inspection (see 4.4). 43 First article inspection. If required, the first article shall be
38、examined as specified in section 4.5 for compliance with design, construction, workmanship, appearance, and dimensional requirements. 4.4 Quality conformance inspection. Sampling for inspection shall be performed -in accordance with MIL-STD-105, except where otherwise indicated (see 6.2). 4.4.1 Comp
39、onent and material inspection. In accordance with section 4.1, components and materials shall be tested in accordance with all the requirements of referenced specifications, figures, drawings, and standards unless otherwise excluded, amended, modified, or qualified in this specification or applicabl
40、e documents (see 6.3 and 6.5). - 4.5 Examination of end item. . Examination of the end item shall be in accordance with MIL-STD-105 and sections 4.5.1 and 4.5.2. 4.5.1 Dimensional examinations. This examination shall be limited to those examinations that may be performed without disassembling the un
41、it in such manner that its performance, durability, and appearance would be affected. The sample unit shall be one of the finished smoke curtains or blankets. The sample size shall be in accordance with inspection level S-3. Smoke curtains and blankets shall be examined in accordance with the length
42、 and width dimensions of Drawing 803-5959318. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.2 Visual examinations. Smoke curtains and blankets shall be visually examined for defects listed in table I. The hem shall be inspected on both the fa
43、ce and the back side. Defects found shall be counted regardless of their proximity to one another, except where two or more defects represent a single local condition on the hem, in which case only the most serious defect will be counted. The sample size shall be in accordance with inspection Level
44、S-3. TABLE I. Description of defects in smoke barriers. Defects Maior Minor Cut, hole or tear (including selvage) - any Crease or wrinkle - embedded, cannot be removed by manual pressure X X Spot, stain, or streak (inspection distance - 3 feet): 1 inch or more in combined length and width dimensions
45、 Less than 1 inch in combined length and width dimensions Color not as specified Color not uniform or shaded Design not as specified Any component not as specified Seam and stitch type: Wrong seam type Wrong stitch type Stitch tension: Loose, resulting in a loosely secured seam Tight, stitches break
46、 when normal strain is applied to the seam or stitching Stitches per inch: Fewer than 6 or more than 10 Hem: Width variable by more than 1/4-inch Badly twisted, pleated, or puckered Needle chews Open seam: Due to broken thread or broken stitch Due to skipped stitches or run off X X X X X X X X X X X
47、 X X X X X Label missing, incomplete, incorrect, illegible or misplaced X 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-24756 42 W 797990b 0457474 O W MIL-C-24756( SH) 4.6 Inspection of packaging. Sample packs and the inspection of preserva
48、tion, packing and marking for shipment, stowage, and storage shall be in accordance with the requirements of section 5 and the documents specified therein. 5. PACKAGING (The packing requirements specified herein apply only for direct Government acquisitions. For the extent of applicability of the pa
49、ckaging or preparation for delivery requirements of referenced documents listed in section 2, see 6.6.) 5.1 General. 5.1.1 Navy fire-retardant requirements. (a) 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 reinforcing shall be fire-retardant treated material conforming to MIL-L-19140 as f
