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Title: Apparatus for detecting leakage of liquid sodium

Abstract

An apparatus for detecting the leakage of liquid sodium includes a cable-like sensor adapted to be secured to a wall of piping or other equipment having sodium on the opposite side of the wall, and the sensor includes a core wire electrically connected to the wall through a leak current detector and a power source. An accidental leakage of the liquid sodium causes the corrosion of a metallic layer and an insulative layer of the sensor by products resulted from a reaction of sodium with water or oxygen in the atmospheric air so as to decrease the resistance between the core wire and the wall. Thus, the leakage is detected as an increase in the leaking electrical current. The apparatus is especially adapted for use in detecting the leakage of liquid sodium from sodium-conveying pipes or equipment in a fast breeder reactor.

Inventors:
 [1]
  1. (Mito, JP)
Publication Date:
Research Org.:
POWER REACTOR & NUCLEAR FUEL
OSTI Identifier:
863177
Patent Number(s):
US 4112417
Assignee:
Doryokuro Kakunenryo Kaihatsu Jigyodan (Tokyo, JP) OSTI
DOE Contract Number:  
GI02-84NE37930
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
apparatus; detecting; leakage; liquid; sodium; cable-like; sensor; adapted; secured; wall; piping; equipment; opposite; core; wire; electrically; connected; leak; current; detector; power; source; accidental; causes; corrosion; metallic; layer; insulative; products; resulted; reaction; water; oxygen; atmospheric; air; decrease; resistance; detected; increase; leaking; electrical; especially; sodium-conveying; pipes; fast; breeder; reactor; especially adapted; atmospheric air; breeder reactor; fast breeder; power source; liquid sodium; electrical current; electrically connected; metallic layer; sensor adapted; detecting leakage; current detector; /340/73/976/

Citation Formats

Himeno, Yoshiaki. Apparatus for detecting leakage of liquid sodium. United States: N. p., 1978. Web.
Himeno, Yoshiaki. Apparatus for detecting leakage of liquid sodium. United States.
Himeno, Yoshiaki. Sun . "Apparatus for detecting leakage of liquid sodium". United States. https://www.osti.gov/servlets/purl/863177.
@article{osti_863177,
title = {Apparatus for detecting leakage of liquid sodium},
author = {Himeno, Yoshiaki},
abstractNote = {An apparatus for detecting the leakage of liquid sodium includes a cable-like sensor adapted to be secured to a wall of piping or other equipment having sodium on the opposite side of the wall, and the sensor includes a core wire electrically connected to the wall through a leak current detector and a power source. An accidental leakage of the liquid sodium causes the corrosion of a metallic layer and an insulative layer of the sensor by products resulted from a reaction of sodium with water or oxygen in the atmospheric air so as to decrease the resistance between the core wire and the wall. Thus, the leakage is detected as an increase in the leaking electrical current. The apparatus is especially adapted for use in detecting the leakage of liquid sodium from sodium-conveying pipes or equipment in a fast breeder reactor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

Patent:

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