PEDRO C OLIVERA
Engineers in Monroeville, PA
License number
Pennsylvania PE043209E
Category
Engineers
Type
Professional Engineer
Address
Address
Monroeville, PA 15146
Professional information
Method For Sealing A Bare Hole Defined By A Nuclear Heat Exchanger Tubesheet
US Patent:
5715598, Feb 10, 1998
Filed:
Dec 13, 1995
Appl. No.:
8/572221
Inventors:
James W. Everett - Hempfield Township PA
Pedro C. Olivera - Monroeville PA
Lawrence A. Nelson - Penn Township PA
Pedro C. Olivera - Monroeville PA
Lawrence A. Nelson - Penn Township PA
Assignee:
Westinghouse Electric Corporation - Pittsburgh PA
International Classification:
B23P 1500
US Classification:
29890031
Abstract:
Method and joint for sealing a bare hole in a nuclear heat exchanger tubesheet. The tubesheet has a plurality of holes formed therethrough, wherein at least one of the holes has been left vacant by a heat transfer tube removed from the hole. Such a hole is defined as a bare hole. One embodiment of the method of the invention comprises disposing a sleeve in the bare hole to protect the tubesheet material from the corrosive attack of the heat exchanger primary coolant and sealingly disposing a sleeve plug in the sleeve in order to seal the sleeve. A leak-tight joint is defined as the sleeve plug is sealingly disposed in the sleeve.