Submersion test

Submersion Test Sinking Time or Immersion Time... 

The submersion test is intended to ensure that the criticality assessment is conservative. The sequence of tests prior to the submersion simulate accident conditions that a package could encounter during a severe accident near or on water in transport. The specimen is immersed in at least 0.9 m of water for a period of not less than eight hours. 

The basic in vitro tests derived from teehnieal applications are the salt spray test (ASTM B-117) and the submersion test, performed in saline solutions (3.5% NaCl, ASTM G31-72 (2004) Standard Practice for Laboratory Immersion Corrosion Testing of Metals). Both tests are conducted at room temperature. By such tests the mass loss ean be determined according to equation (10.5). The mass loss is calculated after removing the corrosion products with chromic acid, which at the same time removes the corrosion products and inhibits further corrosion (Forking, 1964), which is suitable for technical applications but may raise problems in biological environments. 

Applicability and modification of submersion test solutions, proteins and environment... 

Energy Partners, Inc. (West Palm Beach, Florida), acquired fuel ceU technology from TreadweU Corp. (Thomaston, Coimecticut), which suppHed electrochemical equipment to the U.S. Navy. Energy Partners, Inc. are involved in developing PEECs for propulsion appHcations in transportation and submersible vehicles. A 20-kW PEEC stack was designed for demonstration tests. 

After a recovery-remediation well has been constructed and tested for well capacity, an appropriate submersible pump may be installed. Materials of construction must be compatible with the fluids to be pumped (water, oil, silt/sand). Most... 

A 50,000-gal tank was installed adjacent to the test area. This tank was equipped with an aerator, nutrient feed equipment, and a submersible discharge pump. The physical layout of this system was very similar to that shown in Figure 12.11. 

All samples primed with type B primer showed visible corrosion at a very early date. Within one week of water submersion, all of these samples showed some signs of deterioration. In each case, the side of the pattern maintained at positive potential was the first to discolor and then corrode. In contrast none of the samples primed with type 4 material showed visible deterioration at day 60. With the exception of the type B samples, all of the other samples failed to show any noticable deterioration until one month into the test. At this time, most of the types A, B, and C primed samples showed discoloration and debonding. Correspondingly their leakage currents, at day 30, were an average of 35 times greater than those samples primed and encapsulated with the self-priming elastomer types 4, 5, and 6. 

Within 6hrs of water submersion most of the samples demonstrated currents of about the same order of magnitude as those which persisted throughout the test. 

At the end of the 70s of the last century, an impressive experiment was controversially discussed a living mouse was completely submersed in a PFCL and could survive. This drastic demonstration of the efficacy of artificial respiration, and the tolerance to the substance used, is completely controversial. On the other hand, this test has become a milestone in the development of different medical applications of PFCLs. Not only the possibility of respiration from PFCL (liquid ventilation [3]) was proven, it could be demonstrated simultaneously that these PFCLs were tolerated by the skin and even by the eye and no toxic side effects were observed. 

Test cell A rotating test ring is partially submersed into fuel stationary test ball with applied load is lowered onto rotating test ring. A test disk is immersed into fuel a vibrating test ball with an applied load is lowered onto the test disk. 

The waterproofness test is used during development of fuzes to check the ability of the fuzes to withstand submersion in shallow water. 

This waterproofness test is effective in determining whether the design of the fuze is adequate to withstand conditions of submersion which might be encountered, for instance, in a flooded magazine or a beach operation. 

Positive pressure/submersion V acuum/ submersion Dye penetration Vapor/particle leak testing Visual inspection methods Light transmission tests... 

Vacuum/submersion Dye penetration Vapor/particle leak testing... 

The present chapter reviews recent research efforts aimed at developing new devices for in situ and on-site electrochemical stripping analysis of trace metals. It is not a comprehensive review, but rather focuses on new tools for decentralized metal testing, including remotely deployed submersible stripping probes, hand-held metal analyzers coupled with disposable microfabricated strips, and newly developed green bismuth film sensors. 

The shear and tension tests after submersion of specimens in boiling water for 2 hours are not tests accepted or specified by any regulatory or testing society or agency. Gluing experience over many years, however, has shown that important conclusions with respect to reasons for adhesive failure, as well as important pointers for adhesive development, can be obtained by careful interpretation of the comparison of test results after boil with those from dry and vacuum-pressure testing. 

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