Tritium permeation through steam generator materials
Various subjects related to tritium permeation through steam generator materials are discussed. Isotope effects based on protium and tritium permeabilities of nickel range from 1.36 at 500/sup 0/K to 1.63 at 1000/sup 0/K. Tritium permeation rates from a given quantity of T/sub 2/ molecules will be reduced by the addition of protium and/or deuterium to a point that the tritium rates approach an inverse 0.5 power dependence on the protium and/or deuterium pressures. The permeability constants and the permeation activation energies essentially are equal for several ferritic alloys, but these parameters are significantly different from those for several austentic type alloys. Oxide layers on construction alloys can reduce permeation rates by 2 to 3 orders of magnitude but information on this subject may not be applicable to operating steam generator systems. Recent results indicate that tritium permeation rates through oxide and glass materials are 0.5 rather than first power dependent on pressure.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6131119
- Report Number(s):
- CONF-790803-38
- Country of Publication:
- United States
- Language:
- English
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ALLOYS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOILERS
DATA
DATA FORMS
DEUTERIUM
DIFFUSION
ELEMENTS
HYDROGEN ISOTOPES
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
ISOLATED VALUES
ISOTOPES
LIGHT NUCLEI
METALS
NICKEL
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PERMEABILITY
RADIOISOTOPES
STABLE ISOTOPES
STEAM GENERATORS
THERMONUCLEAR REACTORS
TRANSITION ELEMENTS
TRITIUM
TUNGSTEN ALLOYS
VAPOR GENERATORS
YEARS LIVING RADIOISOTOPES