Development of Inspection and Repair Technology for Heat Exchanger Tubes in Fast Breeder Reactors

Abstract

A prototype probe system with a hybrid optical fiber scope was designed for inspecting and repairing heat exchanger tubes in fast breeder reactors (FBRs). It comprises a laser processing head combined with an eddy current testing unit. Ultrashort laser pulse ablation is used to remove workhardened layers. And spot laser welding is used to repair cracks. This system is both a safe and economical option for the maintenance of FBRs because it extends the lifetime of the heat exchangers.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2009
Accession Number
ADA540402

Entities

People

  • Akihiko Nishimura
  • Akihiro Tagawa
  • Kiyoshi Oka
  • Obideu Mihalache
  • Takahisa Shobu
  • Takuya Yamashita
  • Toshihiko Yamaguchi
  • Yukihiro Shimada

Organizations

  • Japan Atomic Energy Agency

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Sensors

DTIC Thesaurus Topics

  • Advanced Materials
  • Breeder Reactors
  • Electron Beams
  • Heat Exchangers
  • Inspection
  • Laser Beams
  • Laser Pulses
  • Laser Welding
  • Lasers
  • Materials
  • Materials Processing
  • Nuclear Energy
  • Nuclear Power Plants
  • Nuclear Reactors
  • Optical Fiber Lasers
  • Optical Fibers
  • Residual Stress

Fields of Study

  • Engineering
  • Physics

Readers

  • Electrical Engineering
  • Facility/Structural Engineering.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy