Upflow conversion - Eliminating the potential for baffle jetting at McGuire

Conference · Tue Jan 01 04:00:00 EST 1991 · Transactions of the American Nuclear Society; (United States)

OSTI ID:5778867

Kitlan, Jr, M S; McClenny, Jr, A M ^[1]; Culp, D C ^[2]

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1. Duke Power Co., Huntersville, NC (United States)
2. Duke Power Co., Charlotte, NC (United States)

Fuel failures indicative of baffle jetting were observed at Duke Power Company's McGuire units 1 and 2 in 1986 and 1987, respectively. In September 1990 the lower rector internals of unit 2 were modified to permanently eliminate the potential for baffle jetting. The unit 1 internals are to be converted in 1991. McGuire nuclear station is a two-unit, four-loop, Westinghouse pressurized water reactor with 17 by 17 fuel and a gross electrical output of 1,130 MW (electric) per unit. The modification performed on the unit 2 reactor internals resulted in a reversal in the direction of flow through the core barrel and baffle region. This flow reversal reduces the pressure drop across the baffle plates, thus eliminating the driving force for the baffle jets. This modification consists of plugging existing holes in the core barrel and opening new holes in the top former plate to change the flow direction.

• OSTI ID: 5778867
• Report Number(s): CONF-910603--
• Conference Information: Journal Name: Transactions of the American Nuclear Society; (United States) Journal Volume: 63
• Country of Publication: United States
• Language: English

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42 ENGINEERING
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ACCIDENTS
BAFFLES
CONTAINERS
CONTROL EQUIPMENT
DOSES
ENRICHED URANIUM REACTORS
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FLOW REGULATORS
FLUID FLOW
FLUID MECHANICS
FUEL ELEMENT FAILURE
HYDRAULICS
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JETS
MC GUIRE-1 REACTOR
MC GUIRE-2 REACTOR
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MODIFICATIONS
OPERATION
POWER REACTORS
PRESSURE VESSELS
PWR TYPE REACTORS
RADIATION DOSES
RADIATION PROTECTION
REACTOR ACCIDENTS
REACTOR CHANNELS
REACTOR COMPONENTS
REACTOR CORES
REACTOR INTERNALS
REACTOR OPERATION
REACTORS
REMOTE VIEWING EQUIPMENT
THERMAL REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS