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DO-160-Section-7-Operational-Shocks

MIL-STD-907B Engineering, Design, And Shielding Effectiveness Criteria For Shelters (Expandable & Non-Expandable)

Keystone Compliance has developed a reputation as an expert in shielding effectiveness testing. Our knowledge and capabilities guide manufacturers through the certification process. We understand the detailed requirements of MIL-STD 907B shelter testing. Having testing numerous shelters of different classes, we can meet any test need.

If you are in need of shielding effectiveness testing of shelters, please Request a Quote and we will respond promptly. If you are in search of additional information about this test standard and the testing process, please continue reading.

The MIL-STD-907B shielding effectiveness test standard establishes specific requirements for the design and development of rigid walled shelters. The purpose of this shielding effectiveness compliance test standard is to present engineering and design criteria to be applied in the design of shelters.

MIL-907-B testing has an objective of achieving required performance and versatility of shelters. Another objective is minimizing the hours needed to erect or strike mobile shelters. Lastly, this standard sets guidance to foster design standardization of tactical shelters. These shelters are to be used within the Armed Services and other Departments and Agencies of the Department of Defense.

The Department of Defense classifies shelters in one of five categories. Class one shelters are non- expandable shelters. These shelters are used in the same size and shape in which they are transported. Expandable Shelters  are considered class two shelters. These shelters are expanded from the transport size to a larger size. They have expansion ratios of three-to-one of less and perhaps different shape, for use as shelters.

Class three shelters are highly expandable shelters. These shelters have expansion ratios greater than three-to-one from their transport size. Knockdown shelters are class four shelters. These shelters are reduced in height and nested with identical items for transportation.

Lastly, large area shelters are class five shelters. These shelters are disassembled and packed in dedicated or general-purpose containers for shipment. The shelters are further classified as IDO or non-ISO depending on whether they can be transported as containers in accordance with standards of the International Organization for Standardization (ISO).

As stated in MIL-STD-907B, failure of a shelter to meet the requirements specified herein may be grounds for rejection from inclusion in the Department of Defense standard family of shelters. Also, this military compliance testing standard does not alter requirements within existing specifications for tactical shelters designed specifically for any of the Armed Services.

The purpose of this standard is to present engineering and design requirements for effective reliable shelters. These shelters must be able to be operable in a variety of environments without degradation, capable of all necessary transport modes. Also, these shelters must be useable by all branches of the Armed Services

There are general requirements of the shelter life, reliability and maintainability. Unless otherwise stated, the design life for a typical shelter must be 15 years. The shelter must also have a calculated mean time to repair at the organizational and intermediate level not to exceed 4 hours at the 90th percentile.

These requirements apply to all expandable and non-expandable shelters. All shelters entering the standard family of shelters shall have a Maintainability Index calculated and assigned. The shelters should be constructed with use of common hand tools.

There are limits on the dimensions and weights. The maximum external dimensions of the shelter in shipping configuration should be eight feet by eight feet by 20 feet.

Shielding effectiveness testing is a form of electromagnetic compatibility testing that requires an increased level of detail. Our trained engineers understand the requirements of the standard. That knowledge streamlines the testing process and assures the testing is applied appropriately and accurately to every shelter.

Keystone Compliance is accredited to ISO 17025. Our test reports are recognized around the globe and delivered quickly upon completion of the testing. Communication throughout the test program is essential and something we excel at. Our customers are always aware of the status of testing.

When manufacturers need competent shielding effectiveness testing, they partner with Keystone Compliance. In addition to shielding effectiveness, we also offer EMC testing, ESD testing and indirect lightning testing. We also feature a full environmental lab with vibration, altitude, temperature and a complete suite of other mechanical testing capabilities.

Request a Quote to learn more about our capabilities and witness why thousands of manufacturers rely on Keystone Compliance to help meet their regulatory compliance testing needs.