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Corrosion Sensors and ISIS: A Condition-Based Approach to the Inspection and Preservation of Tanks and Voids on U.S. Navy Ships

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Since the mid-1990’s, the Naval Research Laboratory (NRL) has explored the use of Corrosion Sensor-based Tank Monitoring Systems and the Insertable Stalk Inspection System (ISIS) as a means to reduce requirements for manned entry into tanks and voids during their inspections. These systems provide a means for providing information on the condition of a tank or void while eliminating requirements for gas freeing, cleaning, and preparing the tanks for manual inspection.

In 2010, the U.S. Navy’s Corrosion Control Assessment and Maintenance Manual (CCAMM) was modified to afford the use of the Corrosion Sensor-based Tank Monitoring Systems, and for increased use of ISIS as a means of assessing the condition of tanks and voids on U.S. Navy ships. The Corrosion Sensor-based Tank Monitoring Systems afford a means to determine if a tank is actively corroding that does not require entering or opening the tank. ISIS provides a means to perform a visual inspection of a tank or void without requirements to certify the tank safe for human entry or for cleaning and preparing the tank for manned inspection. Combined, these systems provide a means for monitoring and documenting tank and void condition without requirements for human entry. This results in significant savings as the cost to prepare a tank for human entry and inspection are not incurred until the tank or void condition drives this action.
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Keywords: Automated Inspection Systems; Ballast Tank Coatings Assessments; Corrosion Detection and Assessment; Insertable Stalk Inspection System; Tank Monitoring Systems

Document Type: Research Article

Publication date: March 1, 2012

More about this publication?
  • The Naval Engineers Journal is the peer-reviewed journal of the American Society of Naval Engineers (ASNE). ASNE is the leading professional engineering society for engineers, scientists and allied professionals who conceive, design, develop, test, construct, outfit, operate and maintain complex naval and maritime ships, submarines and aircraft and their associated systems and subsystems.
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