BIOASSAY VESSEL FAILURE ANALYSIS

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Two high-pressure bioassay vessels failed at the Savannah River Site during a microwave heating process for biosample testing. Improper installation of the thermal shield in the first failure caused the vessel to burst during microwave heating. The second vessel failure is attributed to overpressurization during a test run. Vessel failure appeared to initiate in the mold parting line, the thinnest cross-section of the octagonal vessel. No material flaws were found in the vessel that would impair its structural performance. Content weight should be minimized to reduce operating temperature and pressure. Outer vessel life is dependent on actual temperature exposure. Since ... continued below

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Vormelker, P September 22, 2008.

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Two high-pressure bioassay vessels failed at the Savannah River Site during a microwave heating process for biosample testing. Improper installation of the thermal shield in the first failure caused the vessel to burst during microwave heating. The second vessel failure is attributed to overpressurization during a test run. Vessel failure appeared to initiate in the mold parting line, the thinnest cross-section of the octagonal vessel. No material flaws were found in the vessel that would impair its structural performance. Content weight should be minimized to reduce operating temperature and pressure. Outer vessel life is dependent on actual temperature exposure. Since thermal aging of the vessels can be detrimental to their performance, it was recommended that the vessels be used for a limited number of cycles to be determined by additional testing.

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  • Journal Name: Journal of Failure Analysis and Prevention

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  • Report No.: SRNL-STI-2008-00382
  • Grant Number: DE-AC09-08SR22470
  • Office of Scientific & Technical Information Report Number: 941107
  • Archival Resource Key: ark:/67531/metadc902811

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  • September 22, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 2, 2016, 5:14 p.m.

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Vormelker, P. BIOASSAY VESSEL FAILURE ANALYSIS, article, September 22, 2008; [Aiken, South Carolina]. (digital.library.unt.edu/ark:/67531/metadc902811/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.