Simulated and simultaneous loss-of-coolant accident testing of protective coatings for the nuclear industry
An apparatus was designed and constructed to test the performance of coatings under conditions of high-pressure steam and radiation that might exist under a loss-of-coolant accident (LOCA). Results from the ''simultaneous'' exposure of coatings to high-pressure steam and radiation are compared to results obtained from the conventional ''simulated'' test procedures. Coating systems were selected that had a history of performing well under simulated LOCA conditions and included zinc-based, epoxy, and phenolic primers with phenolic and modified phenolic topcoats. Coatings were exposed to $sup 60$Co radiation doses in the range of 10$sup 8$ to 10$sup 9$ rad. The study showed that the conventional simulated LOCA conditions were more severe on the coatings than those tested under the simultaneous exposure to high-pressure steam and $sup 60$Co radiation. It was concluded that coatings that satisfactorily passed the simulated LOCA tests will also pass the simultaneous LOCA tests.
- Research Organization:
- Univ. of Missouri, Rolla
- NSA Number:
- NSA-33-032433
- OSTI ID:
- 4002571
- Journal Information:
- Nucl. Technol., v. 28, no. 2, pp. 183-193, Journal Name: Nucl. Technol., v. 28, no. 2, pp. 183-193; ISSN NUTYB
- Country of Publication:
- United States
- Language:
- English
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*PROTECTIVE COATINGS-- TESTING
*PWR TYPE REACTORS-- LOSS OF COOLANT
220900* --Nuclear Reactor Technology--Reactor Safety
GAMMA RADIATION
N50240 --Metals
Ceramics
& Other Materials--Metals & Alloys--Radiation Effects
N77100 --Reactors--Power Reactors
Non-breeding
Light-water Moderated
Boiling Water-cooled
N77200 --Reactors--Power Reactors
Non-breeding
Light-water Moderated
Non-boiling Water-cooled
N77900* --Reactors--Reactor Safety & Environmental Aspects
PRESSURE DEPENDENCE
SIMULATION
STEAM
THERMAL DEGRADATION