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ASTM E1975-22

(Specification)

Standard Specification for Shelter, Electrical, Equipment S-280/G

Standard Specification for Shelter, Electrical, Equipment S-280/G

ABSTRACT
This specification covers one type of lightweight field and mobile shelter designed for transport by cargo truck, fixed or rotary winged aircraft, rail, and ship, as shelter, electrical equipment S-280/G. Core, adhesive, and sealer materials used in the construction of this item shall be in accordance with the density, compressive strength, shear strength, flammability, and water absorption requirements. Shock mounts shall be subjected to hardness, resilience, and depression-deflection tests to check for compliance with specified requirements. Construction properties shall comply with the cleaning, arc or resistance welding, lamination (impact resistance), vapor seal, interchangeability, riveting, finishing, marking, shelter gross weight, service integrity, and tightness preconditioning specifications. Environmental service conditions such as moisture resistance, rapid temperature changes, and thermal differential including thermal deformation and heat transfer shall be met. The shelter shall also conform to the requirements for transportability whether in rail or air transport, capability to withstand flat and rotational drops and simulated towing, lifting and towing eye casting hardness, and static door and roof access steps vertical loads for structural integrity. Tightness tests shall be conducted as well to verify shielding from air, door latch torque, light, electromagnetic interference, water, and fording.
SCOPE
1.1 This specification covers one type of lightweight field and mobile shelter designed for transport by cargo truck, fixed or rotary winged aircraft, by rail, and ship, as Shelter, Electrical Equipment S-280/G (see 15.5).  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 The following safety hazards caveat refers only to the test methods described in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
30-Apr-2022
ICS
55.040 - Packaging materials and accessories
Technical Committee
E06 - Performance of Buildings
Drafting Committee
E06.53 - Materials and Processes for Durable Rigidwall Relocatable Structures
Current Stage
Ref Project

Relations

Refers
ASTM C273/C273M-20 - Standard Test Method for Shear Properties of Sandwich Core Materials
Effective Date
15-Feb-2020

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REDLINE ASTM E1975-22 - Standard Specification for Shelter, Electrical, Equipment S-280/GREDLINE ASTM E1975-22 - Standard Specification for Shelter, Electrical, Equipment S-280/G
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REDLINE ASTM E1975-22 - Standard Specification for Shelter, Electrical, Equipment S-280/G
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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:E1975 −22
Standard Specification for
1
Shelter, Electrical, Equipment S-280/G
This standard is issued under the fixed designation E1975; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope E631 Terminology of Building Constructions
E864 Practice for Surface Preparation of Aluminum Alloys
1.1 This specification covers one type of lightweight field
to Be Adhesively Bonded in Honeycomb Shelter Panels
and mobile shelter designed for transport by cargo truck, fixed
E1730 Specification for Rigid Foam for Use in Structural
orrotarywingedaircraft,byrail,andship,asShelter,Electrical
Sandwich Panel Cores
Equipment S-280/G (see 15.5).
E1749 Terminology Relating to Rigid Wall Relocatable
1.2 The values stated in inch-pound units are to be regarded
Shelters
as standard. The values given in parentheses are mathematical
E1773 Practice for Sealing RigidWallTactical Shelters with
conversions to SI units that are provided for information only
Polysulfide Based Sealants
and are not considered standard.
E1794 Specification for Adhesive for Bonding Foam Cored
1.3 The following safety hazards caveat refers only to the
Sandwich Panels (200 °F Elevated Humidity Service),
test methods described in this specification. This standard does Type II Panels
not purport to address all of the safety concerns, if any,
E1801 Practice forAdhesive Bonding ofAluminum Facings
associated with its use. It is the responsibility of the user of this in Foam and Beam Type Shelters
standard to establish appropriate safety, health, and environ-
E1851 Test Method for Electromagnetic Shielding Effec-
mental practices and determine the applicability of regulatory tiveness of Durable Rigid Wall Relocatable Structures
limitations prior to use.
E1925 Specification for Engineering and Design Criteria for
1.4 This international standard was developed in accor- Rigid Wall Relocatable Structures
3
dance with internationally recognized principles on standard-
2.2 AWS Standards:
ization established in the Decision on Principles for the
AWS D17.1/D17.1M Specification for Fusion Welding of
Development of International Standards, Guides and Recom-
Aerospace Applications
mendations issued by the World Trade Organization Technical
AWS D17.2/D17.2M Specification for Resistance Welding
Barriers to Trade (TBT) Committee.
for Aerospace Applications
4
2.3 Federal Air Regulation (FAR):
2. Referenced Documents
FAR 25.853 Compartment Interior
2
2.1 ASTM Standards:
2.4 Military Standards:
C273/C273M Test Method for Shear Properties of Sandwich
MIL-DTL-14072 Finishes for Ground Electronic Equip-
Core Materials
5
ment
D1621 Test Method for Compressive Properties of Rigid
MIL-DTL-53039 Coating, Aliphatic Polyurethane, Single
Cellular Plastics
5
Component, Chemical Agent Resistant
D1622/D1622M Test Method forApparent Density of Rigid
MIL-DTL-55507 Shelter, Electrical Equipment, (With or
Cellular Plastics
5
Without Equipment), Packaging of
D2842 Test Method for Water Absorption of Rigid Cellular
5
MIL-STD-202 Electronic and Electrical Component Parts
Plastics
MIL-STD-252 Wired Equipment, Classification of Visual
and Mechanical Defects for Equipment, Electronic,
1
This specification is under the jurisdiction of ASTM Committee E06 on
5
Wired, and Other Devices
Performance of Buildings and is the direct responsibility of Subcommittee E06.53
on Materials and Processes for Durable Rigidwall Relocatable Structures.
Current edition approved May 1, 2022. Published May 2022. Originally
3
approved in 1998. Last previous edition approved in 2021 as E1975–21. DOI: Available from American Welding Society (AWS), 8669 NW 36 St., #130,
10.1520/E1975-22. Miami, FL 33166-6672, http://www.aws.org.
2 4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Flight Standards Service, Federal Aviation Administration
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM (FAA), 800 Independence Ave., SW, Washington, DC 20591, http://www.faa.gov.
5
Standards volume information, refer to the standard’s Document Summary page on Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
the ASTM website. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

-------------------
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it 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 version
of the standard as published by ASTM is to be considered the official document.
Designation: E1975 − 21 E1975 − 22
Standard Specification for
1
Shelter, Electrical, Equipment S-280/G
This standard is issued under the fixed designation E1975; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This specification covers one type of lightweight field and mobile shelter designed for transport by cargo truck, fixed or rotary
winged aircraft, by rail, and ship, as Shelter, Electrical Equipment S-280/G (see 15.5).
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 The following safety hazards caveat refers only to the test methods described in this specification. This standard does not
purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to
establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior
to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
C273/C273M Test Method for Shear Properties of Sandwich Core Materials
D1621 Test Method for Compressive Properties of Rigid Cellular Plastics
D1622/D1622M Test Method for Apparent Density of Rigid Cellular Plastics
D2842 Test Method for Water Absorption of Rigid Cellular Plastics
E631 Terminology of Building Constructions
E864 Practice for Surface Preparation of Aluminum Alloys to Be Adhesively Bonded in Honeycomb Shelter Panels
E1730 Specification for Rigid Foam for Use in Structural Sandwich Panel Cores
E1749 Terminology Relating to Rigid Wall Relocatable Shelters
E1773 Practice for Sealing Rigid Wall Tactical Shelters with Polysulfide Based Sealants
E1794 Specification for Adhesive for Bonding Foam Cored Sandwich Panels (200 °F Elevated Humidity Service), Type II
Panels
E1801 Practice for Adhesive Bonding of Aluminum Facings in Foam and Beam Type Shelters
E1851 Test Method for Electromagnetic Shielding Effectiveness of Durable Rigid Wall Relocatable Structures
E1925 Specification for Engineering and Design Criteria for Rigid Wall Relocatable Structures
1
This specification is under the jurisdiction of ASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.53 on Materials
and Processes for Durable Rigidwall Relocatable Structures.
Current edition approved April 1, 2021May 1, 2022. Published April 2021May 2022. Originally approved in 1998. Last previous edition approved in 20182021 as
E1975–18.–21. DOI: 10.1520/E1975-21.10.1520/E1975-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
E1975 − 22
3
2.2 AWS Standards:
AWS D17.1/D17.1M Specification for Fusion Welding of Aerospace Applications
AWS D17.2/D17.2M Specification for Resistance Welding for Aerospace Applications
4
2.3 Federal Air Regulation (FAR):
FAR 25.853 Compartment Interior
2.4 Military Standards:
5
MIL-DTL-14072 Finishes for Ground Electronic Equipment
5
MIL-DTL-53039 Coating, Aliphatic Polyurethane, Single Component, Chemical Agent Resistant
5
MIL-DTL-55507 Shelter, Electrical Equipment, (With or Without Equipment), Packaging of
5
MIL-STD-202 Electronic and Electrical Component Parts
MIL-STD-252 Wired Equipment, Classification of Visual and Mechanical Defects for Equipment, Electronic, Wired, and Other
5
Devices
5
MIL-STD-810G Environmental Engineering Considerations and Laboratory Tests
6
MIL-STD-1916 DOD Preferred Methods for Acceptance of Product
5
MIL-STD-13231 Mark
...

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1.3 The analyst should determine the sensitivity and reproducibility of the method by carrying out appropriate studies on the solvents of interest. The analyst is referred to Practice E260 for guidance.  
1.4 For purposes of verifying the identity of or identifying unknown volatile compounds the analyst is encouraged to incorporate techniques such as gas chromatography/mass spectroscopy, gas chromatography/infrared spectroscopy or other suitable techniques in conjunction with this test method.  
1.5 Sensitivity of this test method in the determination of the concentration of a given retained solvent must be determined on a case by case basis due to the variation in the substrate/solvent interaction between different types of samples.  
1.6 This test method does not address the determination of total retained solvents in a packaging material. Techniques such as multiple headspace extraction can be employed to this end. The analyst is referred to the manual supplied with the GC-Autosampling system for guidance.  
1.7 The values stated in SI units are to be regarded as the standard.  
1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM F119-82(2022)(Test Method)
Standard Test Method for Rate of Grease Penetration of Flexible Barrier Materials (Rapid Method)

SIGNIFICANCE AND USE
4.1 This test method is valuable in the development and selection of flexible barrier materials suited for use as grease barriers.  
4.2 The test is rapid in comparison with other methods because of the extremely small quantity of oil required for detection (about 6 μg). The actual time to failure is a multiple of the values obtained by this test method. When permeation is through an absorbent structure such as kraft paper coated with polyethylene, the failure times will be longer and variable, depending on the variation in porosity and thickness of the structure.
SCOPE
1.1 This test method provides standard conditions for determining the rate of grease penetration of flexible barrier materials. Pinholes, which can be measured by a separate test, will increase the rate of grease penetration as determined by this test method.  
1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM F2391-22(Test Method)
Standard Test Method for Measuring Package and Seal Integrity Using Helium as the Tracer Gas

SIGNIFICANCE AND USE
5.1 The vacuum, bubble test method, as described in Test Method D3078, and various other leak detection methods described elsewhere (Test Method D4991, Guide E432, Test Method E493, Test Method E498, Test Method E499, and Test Method E1603) have been successfully used widely in various industries and applications to determine that a given package is or is not a “leaker.” The sensitivity of any selected leak test method has to be considered to determine its applicability to a specific situation.  
5.2 The procedures presented in this test method allow the user to carry out package and seal integrity testing with sufficient sensitivity to quantify seals in the previously defined moderate to fine seal ranges.  
5.3 By employing seal-isolating leak testing fixtures, packages constructed of various materials can be tested in the full range of seal performance requirements. Design of these fixtures is beyond the scope of this method.  
5.4 These seal/package integrity test procedures can be utilized as:  
5.4.1 A design tool,  
5.4.2 For tooling qualification,  
5.4.3 Process setup,  
5.4.4 Process validation tool,  
5.4.5 Quality assurance monitoring, or  
5.4.6 Research and development.
SCOPE
1.1 This test method includes several procedures that can be used for the measurement of overall package and seal barrier performance of a variety of package types and package forms, as well as seal/closure types. The basic elements of this method include:  
1.1.1 Helium (employed as tracer gas),  
1.1.2 Helium leak detector (mass spectrometer), and  
1.1.3 Package/product-specific test fixtures.  
1.1.4 Most applications of helium leak detection are destructive, in that helium needs to be injected into the package after the package has been sealed. The injection site then needs to be sealed/patched externally, which often destroys its saleability. Alternatively, if helium can be incorporated into the headspace before sealing, the method can be non-destructive because all that needs to be accomplished is to simply detect for helium escaping the sealed package.  
1.2 Two procedures are described; however the supporting data in Section 14 only reflects Procedure B (Vacuum Mode). The alternative, Sniffer Mode, has proven to be a valuable procedure for many applications, but may have more variability due to exactly the manner that the operator conducts the test such as whether the package is squeezed, effect of multiple small leaks compared to fewer large leaks, background helium concentration, package permeability and speed at which the scan is conducted. Further testing to quantify this procedure’s variability is anticipated, but not included in this version.  
1.2.1 Procedure A: Sniffer Mode—the package is scanned externally for helium escaping into the atmosphere or fixture.  
1.2.2 Procedure B: Vacuum Mode—the helium containing package is placed in a closed fixture. After drawing a vacuum, helium escaping into the closed fixture (capture volume) is detected. Typically, the fixtures are custom made for the specific package under test.  
1.3 The sensitivity of the method can range from the detection of:  
1.3.1 Large leaks—10-2 Pa·m 3/s to 10-5 Pa·m3/s (10–1 cc/sec/atm to 10-4 cc/sec/atm).  
1.3.2 Moderate leaks—10-5 Pa·m 3/s to 10-7 Pa·m3/s (10-4 cc/sec/atm to 10-6 cc/sec/atm).  
1.3.3 Fine leaks—10-7 Pa·m 3/s to 10-9 Pa·m3/s (10-6 cc/sec/atm to 10-8 cc/sec/atm).  
1.3.4 Ultra-Fine leak—10-9 Pa·m 3/s to 10-11 Pa·m3/s (10-8 cc/sec/atm to 10-10 cc/sec/atm).
Note 1: Conversion from cc/sec/atm to Pa·m3/s is achieved by multiplying by 0.1.  
1.4 The terms large, moderate, fine and ultra-fine are relative terms only and do not imply the acceptability of any leak rate. The individual application dictates the level of integrity needed. For many packaging applications, only “large leaks” are considered unacceptable and the ability to detect smaller leaks is immaterial. All leak rates referred...

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    sale 15% off