Performance of the automated cutting equipment system during the plasma cutting of the TMI-2 (Three Mile Island Unit 2) lower core support assembly

Conference · Fri Jan 01 04:00:00 EST 1988 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:5743098

McGough, M S; Austin, W E; Knetl, G

The lower core support assembly (LCSA) of the Three Mile Island Unit 2 (TMI-2) reactor was not structurally damaged during the accident. To permit defueling of that region of the core, the LCSA was cut to permit access. A five-axis teleoperator was developed to deliver plasma cutting, rotary grinding, and abrasive water jetting end effectors to the LCSA. Complex geometry sectioning was completed in a mockup facility at chemistry and pressure conditions simulating those of the vessel, prior to actual in-vessel operations. In-vessel activities began in early May of 1988. This paper presents the details of the in-vessel cutting efforts.

• OSTI ID: 5743098
• Report Number(s): CONF-881011-
• Conference Information: Journal Name: Trans. Am. Nucl. Soc.; (United States) Journal Volume: 57
• Country of Publication: United States
• Language: English

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ABRASIVES
ACCIDENTS
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DEMOLITION
ELECTRIC CONDUCTIVITY
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IONIC CONDUCTIVITY
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JOINING
LABORATORY EQUIPMENT
MACHINING
MANIPULATORS
MATERIALS HANDLING EQUIPMENT
MATHEMATICS
MECHANICAL STRUCTURES
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PERFORMANCE
PH VALUE
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
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POWER REACTORS
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RADIATION EFFECTS
REACTOR ACCIDENTS
REACTOR COMPONENTS
REACTOR CORE DISRUPTION
REACTOR CORES
REACTOR DISMANTLING
REACTORS
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SODIUM COMPOUNDS
SODIUM HYDROXIDES
SPACERS
STRUCTURAL MODELS
SUPPORTS
TESTING
THERMAL REACTORS
THREE MILE ISLAND-2 REACTOR
TOOLS
WATER
WATER COOLED REACTORS
WATER MODERATED REACTORS
WELDING