1、Designation:E197411Standard 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 revision.A number in parenth
2、eses 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 lightweight fieldand mobile rigid wal
3、l shelter designed for transport by cargotruck,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 regardedas the standard.The values given in parentheses are forinformation only.1.3 The following saf
4、ety hazards caveat refers only to thetest methods portion of this specification.This standard doesnot purport to address the safety concerns,if any,associatedwith its use.It is the responsibility of the user of the standardto establish appropriate safety and health practices anddetermine the applica
5、bility of regulatory limitations prior touse.2.Referenced Documents2.1 ASTM Standards:2C273 Test Method for Shear Properties of Sandwich CoreMaterialsD1621 Test Method for Compressive Properties of RigidCellular PlasticsD1622 Test Method for Apparent Density of Rigid CellularPlasticsD2842 Test Metho
6、d for Water Absorption of Rigid CellularPlasticsE1370 Guide for Air Sampling Strategies for Worker andWorkplace ProtectionE1749 Terminology Relating to Rigid Wall RelocatableSheltersE1773 Practice for Sealing Rigid Wall Tactical Shelters withPolysulfide Based SealantsE1800 Specification for Adhesive
7、 for Bonding Foam CoredSandwich Panels(160F Elevated Humidity Service),Type I PanelsE1801 Practice for Adhesive Bonding of Aluminum Facingsin Foam and Beam Type SheltersE1851 Test Method for Electromagnetic Shielding Effec-tiveness of Durable Rigid Wall Relocatable StructuresE1925 Specification for
8、Engineering and Design Criteria forRigid 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-14072 Finishes for Ground Based Electronic Equip-mentMIL-DTL-5550
9、7 Shelter,Electrical Equipment(With orWithout Equipment),Packaging ofMIL-STD-252 Wired Equipment,Classification of Visualand Mechanical DefectsMIL-STD-810 Environmental Engineering Considerationsand Laboratory TestsMIL-STD-2219 Fusion Welding for Aerospace ApplicationsMIL-STD-13231 Marking of Electr
10、onic Items2.5 Drawings:6DL-SM-B-563500 Shelter,Electrical Equipment,S-250/GDL-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 AssemblySM-C-435904 KeeperSM-C-435937 NameplateSM-B-563559 Adhesi
11、ve1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.53on Materials and Processes for Durable Rigidwall Relocatable Structures.Current edition approved Sept.1,2011.Published October 2011.Originallyapprov
12、ed in 1998.Last previous edition approved in 2006 as E1974 06.DOI:10.1520/E1974-11.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page on
13、the ASTM website.3Available from AMS Publications,Society of Automotive Engineers(SAE),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.5Availab
14、le from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/www.dodssp.daps.mil.6Available from US Army Natick Soldier Center,ATTN:AMSRD-NSC-CP-CS,Kansas Street,Natick,MA 01760-5018.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,
15、West Conshohocken,PA 19428-2959.United States1 SM-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-595565 Core Material U
16、rethane,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 Drain,Fixture,Construction Tightness TestSC-D-781236 Test Fixture Installation Construction Tight-ness TestSC-B-964240 Nameplate,S-250 Shelter(With Rivnuts)3.Terminology3.1 Definitions:3.1.1 delaminationsfor purpose of this s
