ROBERT W FLEMING
Engineers in Monroeville, PA
License number
Pennsylvania PE003970E
Category
Engineers
Type
Professional Engineer
Address
Address
Monroeville, PA 15146
Professional information
Method Of Vacuum Degassing And Refilling A Reactor Coolant System
US Patent:
4647425, Mar 3, 1987
Filed:
Jan 30, 1984
Appl. No.:
6/575130
Inventors:
Joseph A. Battaglia - Forest Hills PA
Robert W. Fleming - Monroeville PA
Robert W. Fleming - Monroeville PA
Assignee:
Westinghouse Electric Corp. - Pittsburgh PA
International Classification:
G21C 1932
US Classification:
376308
Abstract:
A procedure for vacuum degassing of a reactor coolant system which basically utilizes existing equipment to degas and refill the coolant system. The level of radiogas and non-radiogas concentration is reduced to low residual levels in less than two hours to expedite shutdown operations. The procedure enhances residual heat removal by using the steam generators as reflux condensers. During draindown of the reactor coolant to the midplane of the reactor vessel outlet nozzles, a two-phase pump is used and a vacuum is established in the vapor space created in the reactor pressure vessel, and the steam generators.