Interaction of cobalt with a stainless steel oxide surface

Conference · Tue Jan 01 00:00:00 EST 1991 · Transactions of the American Nuclear Society; (United States)

OSTI ID:5854020

Taylor, J B ^[1]

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1. British Nuclear Fuels PLC, Risley (England)

The deposition of radioactive cobalt ions from aqueous solutions in the pH range from 1 to 12 onto the internal surface of a stainless steel vessel or pipework can lead to the buildup of tenacious surface activity. For liquid streams of low specific activity (measured in becquerels per millilitre), the surface activity buildup may create a more dominant gamma radiation field than the activity suspended in the liquid. Failure to adequately predict this buildup for an operational nuclear plant can lead to an underestimate of potential gamma dose rates. This may lead to an economic penalty if additional shielding or other protective measures are necessary following plant operation. A theoretical method of determining the cobalt mass/activity deposition from aqueous liquor onto stainless steel is outlined in this paper. A validation of the method is given, and the limits of its application are discussed.

• OSTI ID: 5854020
• Report Number(s): CONF-910603-; CODEN: TANSA
• Journal Information: Transactions of the American Nuclear Society; (United States), Vol. 63; Conference: Annual meeting of the American Nuclear Society (ANS), Orlando, FL (United States), 2-6 Jun 1991; ISSN 0003-018X
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
36 MATERIALS SCIENCE
COBALT
DEPOSITION
NUCLEAR POWER PLANTS
PRIMARY COOLANT CIRCUITS
ACTIVITY LEVELS
STAINLESS STEELS
SCALING
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
DECONTAMINATION
FISSION PRODUCT RELEASE
OXIDATION
PH VALUE
QUANTITY RATIO
ALLOYS
CLEANING
COOLING SYSTEMS
DISPERSIONS
ELEMENTS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
METALS
MIXTURES
NUCLEAR FACILITIES
POWER PLANTS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
SOLUTIONS
STEELS
THERMAL POWER PLANTS
TRANSITION ELEMENTS
220900* - Nuclear Reactor Technology- Reactor Safety
220200 - Nuclear Reactor Technology- Components & Accessories
360604 - Materials- Corrosion
Erosion
& Degradation