JOSEPH D FRANK
Engineers in Pittsburgh, PA
License number
Pennsylvania PE020264E
Category
Engineers
Type
Professional Engineer
Address
Address
Pittsburgh, PA 15237
Professional information
Internal Diameter Measuring Apparatus
US Patent:
4228593, Oct 21, 1980
Filed:
May 5, 1978
Appl. No.:
5/903377
Inventors:
Joseph M. Frank - Penn Hills PA
Robert A. Hufnagel - Forest Hills PA
Robert A. Hufnagel - Forest Hills PA
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
G01B 712, G01B 734
US Classification:
33178F
Abstract:
The internal diameter measuring apparatus comprises a flexible supporting member capable of being inserted into a heat transfer tube in a nuclear steam generator with flexible centering devices disposed on the flexible supporting member at various locations along the flexible supporting member for centering the measuring apparatus within the heat transfer tube. The measuring apparatus also comprises contacting apparatus disposed on the flexible supporting member for contacting the inside surface of the heat transfer tube that is capable of deflecting in response to variations on the inside surface of the heat transfer tube. The contacting apparatus is connected to a transforming mechanism disposed in the flexible supporting member for monitoring the deflection of the contacting apparatus and for transforming the so monitored deflections into readings indicating the internal diameter of the heat transfer tube.