The ASTM D6653/D6653M-13 (2021) standard test method is designed to evaluate the effects of high altitude on Encasement systems through the vacuum method. These tests are suitable for evaluating the differential pressure effects that a product or Encasement system may face at altitudes up to 5,791 m (19,000 ft). By simulating a real transportation environment, this standard can help developers and engineers determine the performance and durability of Encasement under high altitude conditions. Unlike Miscellaneous leak test methods such as D3078, D4991, and D5094, this standard focuses on the effects of pressure changes on Encasement systems, providing reliable data to support qualitative assessments. The tests mentioned in the standard should be expressed in SI units or inch-pound units and should be performed independently within a specific system to ensure accuracy and comparability of results.
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