Plug and method for plugging a penetration in a pressure vessel

Details Plug and method for plugging a penetration in a pressure vessel Plug and method for plugging a penetration in a pressure vessel

1991-05-10

1992-08-04

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Seal arrangements

376204, 165 71, 138 89, 29890031, 2940207, 29723, 228 60, G21C 1306

Patent

active

051357054

ABSTRACT:
A plug and method for plugging a penetration in a pressure vessel wall having a sleeve protruding through the penetration. The sleeve is cut at a point between the interior and exterior surfaces of the pressure vessel wall. The cut portion of the sleeve extending beyond the exterior surface of the pressure vessel wall is removed. A plug sized to fit within the penetration is inserted into the penetration so that one end of the plug is flush with the exterior surface of the pressure vessel wall. A weld pad is deposited on the end of the plug and the exterior surface of the pressure vessel wall.

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Alden, John W. et al., Products and Services to Improve PWR Steam Generator Maintenance, pp. 5 & 6, 4 Apr. 1983.

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