Elizabeth Ann Hogan

US Patent:

6809506, Oct 26, 2004

Filed:

Mar 26, 2001

Appl. No.:

09/816148

Inventors:

K. E. Lucas - Upper Marlboro MD
Paul Slebodnick - Springfield VA
Elizabeth A. Hogan - Upper Marlboro MD

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N 2700

US Classification:

324 711, 324 712

Abstract:

A system using tank corrosion sensors to provide for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition in ships tanks, and particularly in ships seawater or compensated fuel tanks. The system includes reference half-cells mounted along a suspended cable and one instrumented sacrificial anode at the end of the cable to provide optimal sensing capability within a tank structure. The reference half-cells and the sacrificial anode measure a potential and current output, respectively. Together the measurements provide objective information that can be used to predict corrosion damage and coating deterioration occurring throughout the structure of the tank. The system may be used for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition. In a preferred embodiment, the measurements are stored in a datalogger that is optimally contained within an associated instrument housing.

US Patent:

6896779, May 24, 2005

Filed:

May 21, 2004

Appl. No.:

10/857369

Inventors:

Keith E. Lucas - Upper Marlboro MD, US
Paul Slebodnick - Springfield VA, US
Elizabeth A. Hogan - Upper Marlboro MD, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N027/26
C23F013/00

US Classification:

204404, 20419602, 20419603, 20419606, 20419607, 20419634, 20419637, 2057755, 205776, 2057765, 205777, 205727, 205728, 205730, 205731, 205740

Abstract:

A system using tank corrosion sensors to provide for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition in ships' tanks, and particularly in ships' seawater or compensated fuel tanks. The system includes reference half-cells mounted along a suspended cable and one instrumented sacrificial anode at the end of the cable to provide optimal sensing capability within a tank structure. The reference half-cells and the sacrificial anode measure a potential and current output, respectively. Together the measurements provide objective information that can be used to predict corrosion damage and coating deterioration occurring throughout the structure of the tank. The system may be used for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition. In a preferred embodiment, the measurements are stored in a datalogger that is optimally contained within an associated instrument housing.

US Patent:

6902661, Jun 7, 2005

Filed:

Jul 6, 2004

Appl. No.:

10/885527

Inventors:

Keith E. Lucas - Upper Marlboro MD, US
Paul Slebodnick - Springfield VA, US
Elizabeth A. Hogan - Upper Marlboro MD, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

G01N027/26
C23F013/00

US Classification:

2057765, 2057755, 205776, 205726, 205727, 205735, 205740, 204404, 20419602, 20419606, 20419625, 20419637

Abstract:

A system using tank corrosion sensors to provide for an overall assessment and monitoring of the electro-chemical corrosion and coatings condition in ships' tanks, and particularly in ships' seawater or compensated fuel tanks. The system includes reference half-cells mounted along a suspended cable and one instrumented sacrificial anode at the end of the cable to provide optimal sensing capability within a tank structure. The reference half-cells and the sacrificial anode measure a potential and current output, respectively. Together the measurements provide objective information that can be used to predict corrosion damage and coating deterioration occurring throughout the structure of the tank. The system may be used for an overall assessment and monitoring of the electrochemical corrosion and coatings condition. In a preferred embodiment, the measurements are stored in a datalogger that is optimally contained within an associated instrument housing.