Determination and verification of required water chemistry limits. Volume 5. Model boiler 5B tests. Final report. [PWR]
Technical Report
·
OSTI ID:6777918
A model boiler test was performed to determine the potential deleterious effects of synthetic corrosion products and low level chloride additions on steam generator materials, when the generator is operated under All Volatile Treatment (AVT) chemistry. The first indication of tube denting was provided by a positive strain gauge response within the carbon steel drilled support plate after 21.4 ppM-chloride days (294 steaming days). All tubes passing through the carbon steel drilled support plate were found to be dented by profilometry after 47.5 ppM-chloride days exposure (462 steaming days). A reduction in the average bulk water chloride concentration from 0.18 to 0.06 ppM, once active tube denting had been initiated, did not result in a decease in carbon steel corrosion and tube denting. Enhanced heat flux operation, nominal 50 to 80 KBtu/hr-sq.ft, did not affect the carbon steel corrosion or the rate of tube denting. Carbon steel drilled support plate ligament cracking was observed after 52.3 ppM-chloride days of exposure (530 steaming days) as a result of stresses generated from the formation of non-protective magnetite in the tube/support annuli. There was no evidence of accelerated corrosion of the 405 stainless steel drilled support plate, 409 stainless steel eggcrate support and carbon steel eggcrate support systems.
- Research Organization:
- Combustion Engineering, Inc., Windsor, CT (USA). Nuclear Power Systems
- OSTI ID:
- 6777918
- Report Number(s):
- EPRI-NP-3274-Vol.5; ON: TI85920023
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BOILERS
CARBON STEELS
CHEMISTRY
CHROMIUM ALLOYS
CHROMIUM STEELS
CORROSION DENTING
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
DATA
DEFORMATION
EXPERIMENTAL DATA
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
INCONEL 600
INCONEL 690
INCONEL ALLOYS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MICROSTRUCTURE
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NUMERICAL DATA
PWR TYPE REACTORS
REACTOR MATERIALS
REACTORS
STAINLESS STEEL-405
STAINLESS STEELS
STEAM GENERATORS
STEELS
VAPOR GENERATORS
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
BOILERS
CARBON STEELS
CHEMISTRY
CHROMIUM ALLOYS
CHROMIUM STEELS
CORROSION DENTING
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
DATA
DEFORMATION
EXPERIMENTAL DATA
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
INCONEL 600
INCONEL 690
INCONEL ALLOYS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MICROSTRUCTURE
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
NUMERICAL DATA
PWR TYPE REACTORS
REACTOR MATERIALS
REACTORS
STAINLESS STEEL-405
STAINLESS STEELS
STEAM GENERATORS
STEELS
VAPOR GENERATORS
WATER CHEMISTRY
WATER COOLED REACTORS
WATER MODERATED REACTORS