Winston Chow - Palo Alto CA George E. Hecker - Holden MA Yusuf G. Mussalli - Boston MA Barry C. Syrett - Palo Alto CA
Assignee:
EPRI - Palo Alto CA
International Classification:
F01K 2506 F01B 3100
US Classification:
60657
Abstract:
A targeted fluid delivery system (110) is provided for delivering a treatment fluid (F) into tubes (I) of a tube and shell type heat exchanger such as in a condenser (C), typically used in a power plant. The system (110) targets tile treatment fluid (F) delivery to separate regions (R) of tubes (I) such that the concentration of the treatment fluid (F) within the tubes (I) of the targeted region (R) is greater than a concentration of the treatment fluid (F) upon mixing with water from other tubes (I) outside of the targeted region (R) at an outlet (O). The system (110) includes a plurality of manifold tiles (160) oriented in fixed relationship to a tubesheet (100) of the condenser (C) at an inlet thereof such that the manifold tiles (160) are rigidly held in place, but do not block the tubes (I) of the condenser (C). The treatment fluid (F) is delivered to the tubes (I) through injectors (180) in the manifold tiles (160). The treatment fluid (F) is delivered to the manifold tiles (160) through fluid conduits (40 ) which pass through a waterbox (W) of the condenser (C).
System For Controlling Corrosion In An Environment In Which Thin Layers Of Low-Ph Corrosive Fluids Are Formed
Barry C. Syrett - Palo Alto CA Gerhardus H. Koch - Columbus OH Neil G. Thompson - Columbus OH
Assignee:
Electric Power Research Institute, Inc. - Palo Alto CA
International Classification:
C23F 1300
US Classification:
204147
Abstract:
A system for preventing corrosion of a metallic surface in an environment in which a corrosive condensate with a pH of less than about 3 tends to form on the surface exposed to the environment. The system includes an absorbent lining formed from a concrete material that has a chemical resistance to a low pH and that increases the pH of the environment at the underlying metallic surface. The system further includes a counterelectrode and an electrochemical potential control means connected in electrical circuit with the metallic surface. An electrical potential is maintained upon the metallic surface sufficient to effect cathodic protection.
Device For In-Situ Monitoring Of Corrosion Rate Of Cathodically Polarized Metals
Barry C. Syrett - Palo Alto CA Michael C. H. McKubre - Menlo Park CA
Assignee:
Electric Power Research Institute, Inc. - Palo Alto CA
International Classification:
G01N 2746
US Classification:
364496
Abstract:
A method of monitoring the rate of corrosion of a cathodically protected system, comprising superimposing a sinusoidal voltage on a cathodic protection voltage imposed on a portion of the system, measuring an anodic dissolution current in response to the superimposed voltage, and calculating the corrosion rate from the anodic dissolution current at the cathodic protection voltage potential.
Winston Chow - Palo Alto CA Yusuf G. Mussalli - Boston MA Barry C. Syrett - Palo Alto CA
International Classification:
F01K 2506 F01B 3100
US Classification:
60657
Abstract:
A targeted fluid delivery system (110) is provided for delivering a treatment fluid (F) into tubes (I) of a tube and shell type heat exchanger such as in a condenser (C), typically used in a power plant. The system (110) targets the treatment fluid (F) delivery to separate regions (R) of tubes (I) such that the concentration of the treatment fluid (F) within the tubes (I) of the targeted region (R) is greater than a concentration of the treatment fluid (F) upon mixing with water from other tubes (I) outside of the targeted region (R) at an outlet (O). The system (110) includes a plurality of manifold tiles (160) oriented in fixed relationship to a tubesheet (100) of the condenser (C) at an inlet thereof such that the manifold tiles (160) are rigidly held in place, but do not block the tubes (I) of the condenser (C). The treatment fluid (F) is delivered to the tubes (I) through injectors (180) in the manifold tiles (160). The treatment fluid (F) is delivered to the manifold tiles (160) through fluid conduits (40) which pass through a waterbox (W) of the condenser (C).