1、mcH-POUND I A-A-55202A Februarv 6.1996 SUPERSEDING April 22,1993 A-A-55202 COMMERCIAL ITEMDESCRIPTION The General Services Administration has authorized the use of this commercial item description as a replacement for MIL-H-1987 for all Federal agencies. 1. SCOPE. This commercial item description co
2、vers the requirements for helmets intended for use by fire fighters. 2. SALIENT CHARACTERISTICS 2.1 General description. The helmet shall consist of a helmet shell, suspensiodretention assem- bly, energy absorbing system, ear and neck flap, and face shield. The helmet shall be constructed and tested
3、 in accordance with the National Fire Protective Association Standard (NFPA), National Fire Code Number 1972, and as specified herein. 2.2 Materials and comDonents 2.2.1 Helmet shell. The helmet shell design shall be as illustrated in Figure 1 or as approved by the procurememt activity. The color of
4、 the helmet shell shall be as required, pigmented with the required color during the molding process. Surface coating finishes may be applied where inte- gral color is not feasible. The helmet shell shall be free of chips, cracks, blisters, or voids, and the outer surfaces shall have a uniform color
5、 and high luster finish. The shell may have an edge trim. Beneficial comments, recommendations, additions, deletions; clarifications, etc. and any data which may improve this document should be addressed to: Defense Personnel Support Center, Clothing and Textiles Directorate, Attn: DPSC-FNSC, 2800 S
6、outh 20th Street, Philadelphia, PA 19 145-5 099. AMSC N/A FSC 8415 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Licensed by Information Handling ServicesA-A-55202A 2.2.2 Metal commnents. All metal components shall be corrosion resistant or coated with a cor- rosi
7、on preventative compound or surface treatment and free of sharp edges or burrs, Painted surfaces shall be free from flaking, peeling, orange peel, sages, runs, or scratches exposing base metal. 2.2.3 Susrxmiodretention assembly. The suspensiodretention assembly shall include a head- band and a sweat
8、band. The headband shall be adjustable in 1/8 inch increments. The minimum size range shall be 6-112 to 8 (standard commercial designation) and shall be obtainable by the use of one or more headbands. The size range and adjustment points shall be marked on the headband in a permanent and legible man
9、ner. The surface of the headband, in contact with the wearers head, shall not be less than one inch wide. The headband(s) shall be removable and replaceable. The sweatband shall cover the forehead portion of the headband. When the headband is adjusted to the maximum size, the sweatband shall not con
10、tact the helmet shell, and the headband shall not contact the helmet shell, except at the attachment points. Crown straps, if provided by the conractofs design, shall be adjustable for proper fit and maintain proper head height. All materi- als coming in contact with the wearers head shall be non-ir
11、ritating to nod skin. The color of the chinstrap and sweatband shall be as required by the procurement activity. The suspension retention assembly shall be tested for the following: 2.2.3.1 Susuensiodretention assembly test. The suspensiodretention assembly shall be tested in accordance with the fol
12、lowing: The average minimum force required to separate the suspension assembly from the helmet shall be not less than 15 pounds (6.8 kg). The minimum force required to separate any individual attachment point of the suspension assembly from the helmet shell shall be 10 pounds (4.5 kg). The assembly
13、shall be positioned and secured so that all attachment points of the suspension assembly are on a horizontal plane. Each attachment point of the suspension assembly to the helmet shell shall be tested by slowly applying a pull force in the direction required to release the mechanism with sufficient
14、force to separate the attachment point from the helmet shell. Suggested techniques for applying the loads are shown in Figure 2. The force gauge shall be accurate to 0.25 pounds (O. 1 kg). Care shall be taken to apply the pull force through the centerline at each attachment point. If the pull force
15、is applied at any other angle the test results shall be unacceptable and the test shall be repeated. The individual and the average force shall be reported. Failure of the suspension assembly retention system to meet above requirements shall constitute failure of the test. For each sample unit a det
16、ermination shall be made for each attach- ment point of the suspension assembly to the helmet shell and a detexmination of the average of all the individual determinations. 2.2.4 Enerw absorbing: system. The energy absorbing system shall be such that the helmet shall meet be design and performance c
17、haracteristics specified herein and NFPA Standard 1972 except as follows: a. From NFPA, exceed requirements in paragraphs, 4-1 and 4-1.1, Top Impact RequirementForce Transmission (See subparagraph c for desired requirement values). I b. From NFPA, paragraph Top, Front, Side, and Back Impact Requirem
18、ent-Acceleration, add: “The helmet shall show no evidence of cracking or fiacture as a result of impact testing. I 2 Licensed by Information Handling ServicesA-A-55202A c. The maximum acceleration for the top impact location shall be 150 X Gn, 1475.5 mlsec/sec; 4830 ft/sec/sec in lieu of the specifi
19、ed requirements. 2.2.4.1 bact-acceleration/IrnDact resistance of face shield. The requirement for impact-accelatiodimpact-resistance shall be as specified in “PA-1972, except as changed in subparagmphs b and c of paragraph 2.2.4. Testing for *act-acceleration shall be in accordance with “A-1 972 exc
20、ept that the top impact site shall be within a 2-inch (S 1 mm) radius from the intersection of the midsagital plane and the biagion-coronal arc extended to the surface of the helmet. The front, rear and side impact centers shall be 1 +1/2, -0 inches (25 +13, -0 mm) above the reference plane. The tes
21、t anvil shall be steel. The striking face shall be a spherical segment with a radius of 1.9 headband or sweatband not replaceable type, i.e., cannot be removed; headband cannot be adjusted within the specified range; width of chin strap or headband less than specified; exposed ends of nylon webbing
22、not fused (when appli- cable); color of any component not as specified. 4.4.2.2 Ear and neck flap: Not removable; not color specified. 4.4.2.3 Hardware: Broken or malformed, corroded, sharp edge or burr; any component improp- erly installed causing failure to serve intended purpose; on painted compo
23、nents - any flaking, peeling, orange peel, sags, runs or scratches exposing base metal; anymap fastener, eyelet, or rivet insecurely clinched or peened to the degree that separation may occur from the assembly, or excessively clinched or peened to the degree that materials are damaged; any snap fast
24、ener that does not function properly, i.e., fails to snap closed, or provide a secure closure or open freely. 4.4.2.4 Shell: Color not as specified or not uniform; any hole (other than required for assembly of suspension system to shell), any sharp edge or burr, any dimension that is not within the
25、estab- lished tolerance. 4.4.2.5 Face shield: Not adjustable to any position or cannot be secured in a set position; any pit, bubble, scratch, void or blister, any crack, hole or break, not clear transparent. 4.4.2.6 Stitching: Thread breaks, or two or more consecutive skipped or runoff stitches not
26、 over- stitched; thread ends not removed, no puckering of materials from loose stitch tension. 4.4.2.7 Identification markings: Labellmarkings missing, illegible, incorrect. 4.4.2.8 Cleanness: Grease or oil spot or stains on any component on inside and outside. 5. PACKAGING 5.1 Preservation. packing
27、. and marking. The preservation, packing, and marking shall be as specified in the contract or purchase order. 6. NOTES 6.1 Firnires. Figure 1 and 2 are fiirnishe for information purposes only. If there are any incon- sistencies between the written document and the figure, the written document shall
28、 govern. 6 Licensed by Information Handling ServicesA-A-55202A 6.2 “ISH agencies othmse qualified to supply this item shall be exempt fnnn the requirements of 4.2 thru 4.2.4. 6.3 Source of Government documents. Copies of military and Federal documents are available from: Department of the Navy Defen
29、se Printing Service Detachment Office 700 Robbins Avenue, BLDG 4D Philadelphia, PA 19 1 1 1-5093 6.3.1 Source of non-Govemment documents ANSI 287.1 - Practice for Occupational and Educational Eye and Face Protection (Application for copies should be should be addressed to American National Standards
30、 Institute (ANSI), 1430 Broadway, New York, NY 100180.) NFPA 1972, Structural Fire Fighters Helmets (NOTE: All numbered paragraphs referred to in this document are applicable to the 1992 Edition of “PA 1972.) (Application for copies should be addressed to National Fire Protection Association (“A), 1
31、 Batterymarch Park, Quincy, MA 02269-9101.) MILITARY INTERESTS: Custodian Army - GL Review Activities Army-MD CIVIL AGENCY COORDINATING ACTIVITY: GSA - FSS PREPARING ACWIY: DLA-CT Project 84 15-0975 7 Licensed by Information Handling Services- 8 Licensed by Information Handling Services6 I I . vz0zss-v-Y Licensed by Information Handling Services
