Ultrasonic imaging of projected components of PFBR

Sylvia, J.I.; Jeyan, M.R.; Anbucheliyan, M.; Asokane, C.; Babu, V. Rajan; Babu, B.; Rajan, K.K.; Velusamy, K.; Jayakumar, T.

doi:10.1016/j.nucengdes.2013.02.044

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…The importance was highlighted by the accident at the Monju reactor [13] which resulted in a sodium leak. Since then, there have been a number of studies reporting experiment based programs to establish and evaluate under-sodium viewing capability [14][15][16][17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

High temperature ultrasonic immersion measurements using a BS-PT based piezoelectric transducer without a delay line

Bilgunde

Bond

2018

AIP Conference Proceedings

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Section: Introductionmentioning

confidence: 99%

High temperature ultrasonic immersion measurements using a BS-PT based piezoelectric transducer without a delay line

Bilgunde

Bond

2018

AIP Conference Proceedings

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“…However, this is quite difficult because sodium is optically opaque, such that monitoring or surveying of the in-vessel structures cannot be done using optical devices. Therefore, there is a need for an inspection technique that can monitor these obstacles (i.e., a ranging inspection technique (3,4) ) despite their being immersed in liquid sodium that is both hot and radioactive. sensors.…”

Section: Introductionmentioning

confidence: 99%

Development of a Ranging Inspection Technique in a Sodium-cooled Fast Reactor Using a Plate-type Ultrasonic Waveguide Sensor

Kim¹,

Kim²,

Han³

et al. 2015

Transactions of the Korean Society for Noise and Vibration Engi

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In a sodium-cooled fast reactor, which is a Generation-IV reactor, refueling is conducted by rotating, but not opening, the reactor head to prevent a reaction between the sodium, water and air.Therefore, an inspection technique that checks for the presence of any obstacles between the reactor core and the upper internal structure, which could disturb the rotation of the reactor head, is essential prior to the refueling of a sodium-cooled fast reactor. To this end, an ultrasound-based inspection technique should be employed because the opacity of the sodium prevents conventional optical inspection techniques from being applied to the monitoring of obstacles. In this study, a ranging inspection technique using a plate-type ultrasonic waveguide sensor was developed to monitor the presence of any obstacles between the reactor core and the upper internal structure in the opaque sodium. Because the waveguide sensor installs an ultrasonic transducer in a relatively cold region and transmits the ultrasonic waves into the hot radioactive liquid sodium through a long waveguide, it offers better reliability and is less susceptible to thermal or radiation damage. A 10 m horizontal beam waveguide sensor capable of radiating an ultrasonic wave horizontally was developed, and beam profile measurements and basic experiments were carried out to investigate the characteristics of the developed sensor. The beam width and propagation distance of the ultrasonic wave radiated from the sensor were assessed based on the experimental results. Finally, a feasibility test using cylindrical targets (corresponding to the shape of possible obstacles) was also conducted to evaluate the applicability of the developed ranging inspection technique to actual applications.

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“…The nuclear power plants in India have, from their inception, adopted stringent quality assurance measures during fabrication of various systems, structures and components (SSCs) and systematic planning and implementation of in-service inspection (ISI) programs (Baldev Raj et al, 1995;Jayakumar et al, 2013;Sylvia et al, 2013). The requirements of ISI of various components of PFBR have been considered at the design stage itself and it is ensured that these requirements are met participating to ensure safe and reliable operation of the reactor systems.…”

Section: Introductionmentioning

confidence: 99%

An ultrasonic methodology for in-service inspection of shell weld of core support structure in a sodium cooled fast reactor

Kumar

Rajkumar

Sharma

et al. 2015

Nuclear Engineering and Design

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Ultrasonic imaging of projected components of PFBR

Cited by 10 publications

References 4 publications

High temperature ultrasonic immersion measurements using a BS-PT based piezoelectric transducer without a delay line

High temperature ultrasonic immersion measurements using a BS-PT based piezoelectric transducer without a delay line

Development of a Ranging Inspection Technique in a Sodium-cooled Fast Reactor Using a Plate-type Ultrasonic Waveguide Sensor

An ultrasonic methodology for in-service inspection of shell weld of core support structure in a sodium cooled fast reactor

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