Sealed head access area enclosure

Patent · 31 December 1977

OSTI ID:863030

Golden, Martin P ^[1]; Govi, Aldo R ^[2]

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1. Trafford, PA
2. Greensburg, PA

A liquid-metal-cooled fast breeder power reactor is provided with a sealed head access area enclosure disposed above the reactor vessel head consisting of a plurality of prefabricated structural panels including a center panel removably sealed into position with inflatable seals, and outer panels sealed into position with semipermanent sealant joints. The sealant joints are located in the joint between the edge of the panels and the reactor containment structure and include from bottom to top an inverted U-shaped strip, a lower layer of a room temperature vulcanizing material, a separator strip defining a test space therewithin, and an upper layer of a room temperature vulcanizing material. The test space is tapped by a normally plugged passage extending to the top of the enclosure for testing the seal or introducing a buffer gas thereinto.

• DOE Contract Number: E(11-1)-2395
• Assignee: United States Government as represented by U. S. Department of (Washington, DC)
• Patent Number(s): US 4078968
• OSTI ID: 863030
• Country of Publication: United States
• Language: English

Related Subjects

/376/976/
access
bottom
breeder
breeder power
buffer
buffer gas
center
consisting
containment
containment structure
cooled fast
defining
disposed
edge
enclosure
extending
fast
fast breeder
gas
gas therein
head
head access
including
inflatable
inflatable seal
introducing
inverted
inverted u-shaped
joint
joints
layer
liquid-metal-cooled
liquid-metal-cooled fast
located
material
metal-cooled fast
normally
outer
panel
panels
passage
passage extending
plugged
plurality
position
power
power reactor
prefabricated
provided
reactor
reactor containment
reactor vessel
removably
seal
sealant
sealed
sealed head
seals
semipermanent
separator
space
strip
structural
structure
tapped
temperature
testing
thereinto
therewithin
top
u-shaped
upper
upper layer
vessel
vessel head
vulcanizing