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Title: Defect scriber

Abstract

This disclosure describes a device for repeatably scribing a V-shaped scratch having sharply defined dimensions on the interior surface of a nuclear reactor fuel rod tube. A cutting tool having a V-shaped cutting tip is supported within the fuel rod tube so that the V-shaped cutting tip can be pivoted about an axis and scribe a scratch on the interior surface of the fuel rod tube. Lengthwise the scratch runs parallel to a line drawn through the axis of the fuel rod tube and is in the shape of an arc, and widthwise the scratch is V-shaped. This shape is used because the dimensions of the scratch can be plugged into appropriate formulas to calculate stress intensity of cracks in fuel rod tubes. Since the fuel rod tubes which are to be scribed may be radioactive, the scratching assembly is designed for use in a fixture which allows it to be operated in a cave by remote control handling devices.

Inventors:
 [1]
  1. (Hickory Hills, IL)
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
863336
Patent Number(s):
4151773
Assignee:
United States of America as represented by United States (Washington, DC) ANL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
defect; scriber; disclosure; describes; device; repeatably; scribing; v-shaped; scratch; sharply; defined; dimensions; interior; surface; nuclear; reactor; fuel; rod; tube; cutting; tool; tip; supported; pivoted; axis; scribe; lengthwise; runs; parallel; line; drawn; shape; widthwise; plugged; appropriate; formulas; calculate; stress; intensity; cracks; tubes; scribed; radioactive; scratching; assembly; designed; fixture; allows; operated; cave; remote; control; handling; devices; remote control; nuclear reactor; interior surface; cutting tool; reactor fuel; fuel rod; disclosure describes; sharply defined; /83/376/976/

Citation Formats

Russell, Harold C. Defect scriber. United States: N. p., 1979. Web.
Russell, Harold C. Defect scriber. United States.
Russell, Harold C. Mon . "Defect scriber". United States. https://www.osti.gov/servlets/purl/863336.
@article{osti_863336,
title = {Defect scriber},
author = {Russell, Harold C.},
abstractNote = {This disclosure describes a device for repeatably scribing a V-shaped scratch having sharply defined dimensions on the interior surface of a nuclear reactor fuel rod tube. A cutting tool having a V-shaped cutting tip is supported within the fuel rod tube so that the V-shaped cutting tip can be pivoted about an axis and scribe a scratch on the interior surface of the fuel rod tube. Lengthwise the scratch runs parallel to a line drawn through the axis of the fuel rod tube and is in the shape of an arc, and widthwise the scratch is V-shaped. This shape is used because the dimensions of the scratch can be plugged into appropriate formulas to calculate stress intensity of cracks in fuel rod tubes. Since the fuel rod tubes which are to be scribed may be radioactive, the scratching assembly is designed for use in a fixture which allows it to be operated in a cave by remote control handling devices.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}

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