Chemistry control with morpholine at Beaver Valley Power Station
Morpholine is a neutralizing amine commonly used in fossil steam plant condensate systems. Several nuclear plants added morpholine to increase the condensate pH when phosphate chemistry control was being used. When plants implemented AVT chemistry control, morpholine was not added to the secondary cycle of most nuclear plants in the United States. However, Beaver Valley has used morpholine in AVT chemistry control since initial operation in 1976. This study briefly describes the use of morpholine at Beaver Valley and reports levels of inorganic acids present in the steam cycle with and without morpholine additions. The makeup water is a significant source of the low levels of formic and acetic acids measured in the secondary cycle. The thermal decomposition of morpholine is a measurable but not a significant source of these two acids at Beaver Valley, except as measured in only one location in the cycle - the vapor space above the heater drain receiver tank water level. 16 refs.
- Research Organization:
- NUS Corp., Pittsburgh, PA (USA). Radiation Protection and Chemistry Services Dept.
- OSTI ID:
- 5640465
- Report Number(s):
- EPRI-NP-4623; ON: TI86920385
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
AMINES
BEAVER VALLEY-1 REACTOR
BEAVER VALLEY-2 REACTOR
COOLING SYSTEMS
CORROSION PROTECTION
ENERGY SYSTEMS
ENERGY TRANSFER
ENRICHED URANIUM REACTORS
ETHERS
FLUID MECHANICS
HEAT TRANSFER
HETEROCYCLIC COMPOUNDS
HYDRAULICS
MECHANICS
MORPHOLINES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PH VALUE
POWER REACTORS
PWR TYPE REACTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
SECONDARY COOLANT CIRCUITS
THERMAL DEGRADATION
WATER COOLED REACTORS
WATER MODERATED REACTORS
WATER TREATMENT