VAMCIS, a new measuring channel for continuous monitoring of leak rates inside PWR steam generators
Conference
·
· Trans. Am. Nucl. Soc.; (United States)
OSTI ID:6948198
In order to assess the primary to secondary leakage, radioactive isotopes, formed in the primary coolant as a result of fission or neutron capture, are usually monitored in the pressurized water reactor (PWR) secondary coolant. Conventional methods mainly based on the detection of /sup 133/Xe, tritium, and /sup 41/Ar are widely used on French Electricite de France (EdF) PWRs. Some years ago, it appeared necessary to improve both leak rate assessments and steam generator tube rupture (SGTR) detection. A volumetric activity measuring channel inside steam (VAMCIS) has been developed for this purpose. The SGTR that occurred at the North Anna PWR has focused the attention of safety authorities on this new measuring channel. It is planned to implement VAMCIS at North Anna in order to check the leak rate variations more accurately.
- OSTI ID:
- 6948198
- Report Number(s):
- CONF-880422-
- Conference Information:
- Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 56
- 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
440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BOILERS
COOLING SYSTEMS
ENERGY SYSTEMS
FAILURES
LEAK DETECTORS
LEAKS
MEASURING INSTRUMENTS
NAI DETECTORS
PERFORMANCE
PRIMARY COOLANT CIRCUITS
PWR TYPE REACTORS
RADIATION DETECTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
RUPTURES
SCINTILLATION COUNTERS
SECONDARY COOLANT CIRCUITS
SOLID SCINTILLATION DETECTORS
STEAM GENERATORS
TUBES
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
210200* -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BOILERS
COOLING SYSTEMS
ENERGY SYSTEMS
FAILURES
LEAK DETECTORS
LEAKS
MEASURING INSTRUMENTS
NAI DETECTORS
PERFORMANCE
PRIMARY COOLANT CIRCUITS
PWR TYPE REACTORS
RADIATION DETECTORS
REACTOR COMPONENTS
REACTOR COOLING SYSTEMS
REACTORS
RUPTURES
SCINTILLATION COUNTERS
SECONDARY COOLANT CIRCUITS
SOLID SCINTILLATION DETECTORS
STEAM GENERATORS
TUBES
VAPOR GENERATORS
WATER COOLED REACTORS
WATER MODERATED REACTORS