Apparatus for detecting leakage of liquid sodium

Patent · Sun Jan 01 00:00:00 EST 1978

OSTI ID:863177

Himeno, Yoshiaki ^[1]

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1. Mito, JP

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.

• Research Organization: POWER REACTOR & NUCLEAR FUEL
• DOE Contract Number: GI02-84NE37930
• Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan (Tokyo, JP)
• Patent Number(s): US 4112417
• OSTI ID: 863177
• Country of Publication: United States
• Language: English

Related Subjects

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/