Leakage test concerns for packagings with three-O-ring closure seals

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Recent radioactive packagings with three-O-ring closure seals, the middle O-ring being the containment seal, have the potential for false positive results from leakage rate tests. The volume between the containment O-ring and the inner O-ring is used for the helium gas required for the leakage rate tests, to reduce both the amount of helium used and the time for the tests. False positive results can be caused by either a large leakage in the containment sea/l or a leakage in the inner seal. This paper describes the problem, together with possible solutions/areas that need to be addressed in a Safety ... continued below

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5 p.

Creation Information

Oras, J.J.; Towell, R.H. & Wangler, M.E. July 1, 1997.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this article can be viewed below.

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  • Oras, J.J. Argonne National Lab., IL (United States)
  • Towell, R.H. Eagle Research Group, Inc., Germantown, MD (United States)
  • Wangler, M.E. Dept. of Energy, Germantown, MD (United States). Office of transportation, Emergency Management and Analytical Services

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Description

Recent radioactive packagings with three-O-ring closure seals, the middle O-ring being the containment seal, have the potential for false positive results from leakage rate tests. The volume between the containment O-ring and the inner O-ring is used for the helium gas required for the leakage rate tests, to reduce both the amount of helium used and the time for the tests. False positive results can be caused by either a large leakage in the containment sea/l or a leakage in the inner seal. This paper describes the problem, together with possible solutions/areas that need to be addressed in a Safety Analysis Report for Packaging.

Physical Description

5 p.

Notes

INIS; OSTI as DE97007112

Source

  • American Society of Mechanical Engineers (ASME) pressure vessel and piping conference, Orlando, FL (United States), 27 Jul - 1 Aug 1997

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  • Other: DE97007112
  • Report No.: ANL/ET/CP--92858
  • Report No.: CONF-970726--19
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 505297
  • Archival Resource Key: ark:/67531/metadc695976

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Creation Date

  • July 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 15, 2015, 12:02 p.m.

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Oras, J.J.; Towell, R.H. & Wangler, M.E. Leakage test concerns for packagings with three-O-ring closure seals, article, July 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc695976/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.