ASTM E1974-2011 Standard Specification for Shelter Electrical Equipment S-250 G《电气设备外罩S-250 G的标准规格》.pdf
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1、Designation:E197406 Designation: E1974 11Standard Specification forShelter, Electrical Equipment S-250/G1This standard is issued under the fixed designation E1974; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last re
2、vision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers one type of lightw
3、eight field and mobile rigid wall shelter designed for transport by cargo truck,fixed or rotary winged aircraft, by rail, and ship, designated as Shelter, Electrical Equipment S-250/G.1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are fo
4、r informationonly.1.3 The following safety hazards caveat refers only to the test methods portion of this specification. This standard does notpurport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of the standard to establishappropriate safety
5、and health practices and determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C273 Test Method for Shear Properties of Sandwich Core MaterialsD1621 Test Method for Compressive Properties of Rigid Cellular PlasticsD1622 Test Method for Apparent
6、 Density of Rigid Cellular PlasticsD2842 Test Method for Water Absorption of Rigid Cellular PlasticsE1370 Guide for Air Sampling Strategies for Worker and Workplace ProtectionE1749 Terminology Relating to Rigid Wall Relocatable SheltersE1773 Practice for Sealing Rigid Wall Tactical Shelters with Pol
7、ysulfide Based SealantsE1800 Specification for Adhesive for Bonding Foam Cored Sandwich Panels (160F Elevated Humidity Service), Type I PanelsE1801 Practice for Adhesive Bonding of Aluminum Facings in Foam and Beam Type SheltersE1851 Test Method for Electromagnetic Shielding Effectiveness of Durable
8、 Rigid Wall Relocatable StructuresE1925 Specification for Engineering and Design Criteria for Rigid Wall Relocatable Structures2.2 Commercial Standards:3SAE AMS-W-6858 Welding, Resistance: Spot and Seam2.3 Federal Air Regulation (FAR):4FAR 25.853 Compartment Interior2.4 Military Standards:5MIL-F-140
9、72 Finishes for Ground Based Electronic EquipmentMIL-DTL-55507 Shelter, Electrical Equipment (With or Without Equipment), Packaging ofMIL-STD-252 Wired Equipment, Classification of Visual and Mechanical DefectsMIL-STD-810 Environmental Engineering Considerations and Laboratory TestsMIL-STD-2219 Fusi
10、on Welding for Aerospace ApplicationsMIL-STD-13231 Marking of Electronic Items2.5 Drawings:6DL-SM-B-563500 Shelter, Electrical Equipment, S-250/G1This specification is under the jurisdiction of ASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.53 on
11、Materialsand Processes for Durable Rigid Wall Rigidwall Relocatable Structures.Current edition approved Oct.Sept. 1, 2006.2011. Published October 2006.2011. Originally approved in 1998. Last previous edition approved in 20012006 asE197401a.E1974 06. DOI: 10.1520/E1974-06.10.1520/E1974-11.2For refere
12、nced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3Available from AMS Publications, Society of Automotive Engineers (SAE
13、), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http:/www.sae.org.4Available from Flight Standards Service, Federal Aviation Administration (FAA), 800 Independence Ave., SW, Washington, DC 20591, http:/www.faa.gov.5Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D,
14、700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.6Available from US Army Natick Soldier Center, ATTN: AMSRD-NSC-CP-CS, Kansas Street, Natick, MA 01760-5018.1This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of wha
15、t changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the
16、 official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.DL-SM-B-649950 Modification Kit, EMI, MK-1092/GDL-SM-B-650123 Shelter, Electrical Equipment, S-250/G (Shielded)SM-D-208679 Outer Door AssemblySM-D-208682 Inner Door As
17、semblySM-C-435904 KeeperSM-C-435937 NameplateSM-B-563559 AdhesiveSM-B-563655 Foam, Rigid, PlasticSM-D-563754 Diagram, Flatness and SquarenessSM-C-564839 Gasket, SiliconeSC-C-595537 Padlock and KeySC-B-595538 Bonding ProcedureSC-B-595539 Cleaning ProcedureSC-B-595564 Core Material Urethane, LightSC-B
18、-595565 Core Material Urethane, HeavySM-D-649951 Modification Kit EMI MK-1092/GSM-D-649952 Sling AssemblySM-D-649953 Shelter, Electrical Equipment S-250/GSM-C-650082 Skid AssemblySM-D-650085 Test Weight InstallationSM-C-650125 NameplateSC-D-781228 Door Fixture Construction Tightness TestSC-D-781235
19、Drain, Fixture, Construction Tightness TestSC-D-781236 Test Fixture Installation Construction Tightness TestSC-B-964240 Nameplate, S-250 Shelter (With Rivnuts)3. Terminology3.1 Definitions:3.1.1 delaminationsfor purpose of this specification, a delamination is defined as the condition that exists wi
20、thin a sheltersection or panel when two surfaces that once were bonded together are no longer bonded together. Delaminations may occurbetween any two bonded surfaces; examples include: separations between thermal barriers and members, between thermal barriersand skins, between members and core, or b
21、etween skins and core. They may be the result of a poor quality bond or they couldoccur due to misuse or severe handling of the panels or the shelter after bonding. Test requirements of this specification shall notbe construed as misuse or severe handling as these terms apply to the definition of de
22、laminations.3.1.2 examinationexamination consists of simple, generally nondestructive determinations of compliance, without the use ofspecial testing equipment.3.1.3 inspectioninspection is the examination or testing, or both, of supplies to determine compliance with the applicablerequirements. Samp
23、ling an element of inspection.3.1.4 testingtesting consists of determinations of compliance using technical means.3.1.5 voidsfor the purpose of this specification, a void is defined as any unauthorized separation or space within a shelter panelor section, that is, any separation or space that is in
24、conflict with the drawings or other contractual requirements. Voids range fromgaps as wide as the space created by a missing piece of core material to as thin as a break in the continuity of material. Voids maybe located solely within one type of material, such as a core material separation; they ma
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