Rebuilding the gulf coast in the aftermath of hurricane katrina corrosion control and mitigation
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Rebuilding the Gulf Coast in the Aftermath of Hurricane Katrina: Corrosion Control and Mitigation. Janice K. Lomness Corrosion Technology Laboratory NASA Kennedy Space Center, FL 32899. Introduction. Corrosion is a widespread and costly problem.

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Rebuilding the gulf coast in the aftermath of hurricane katrina corrosion control and mitigation

Rebuilding the Gulf Coast in the Aftermath of Hurricane Katrina: Corrosion Control and Mitigation

Janice K. Lomness

Corrosion Technology Laboratory

NASA Kennedy Space Center, FL 32899


Introduction
Introduction Katrina:

  • Corrosion is a widespread and costly problem.

  • Corrosion costs the United States over $300 billion each year.

  • Rebuilding or repairing hurricane damage.

  • Corrosion control and mitigation into the design, materials selection, or repair stage of development.

  • Avoid catastrophic failures and expensive repairs.


Corrosion control and mitigation
Corrosion Control and Mitigation Katrina:

  • Design Engineers, Material Science Engineers, and Corrosion Experts.

  • Identify forms of corrosion that will affect system being developed.

    • Uniform Corrosion, Pitting Corrosion, Crevice Corrosion, Filiform Corrosion, Erosion Corrosion, Galvanic Corrosion, Selective Leaching/Dealloying, Intergranular and Exfoliation Corrosion, Stress Corrosion Cracking, Corrosion Fatigue, Fretting Corrosion


Corrosion control and mitigation1
Corrosion Control and Mitigation Katrina:

  • Design consideration

    • Material properties that influence the degradation of the material and the probability for a particular form of corrosion of the material to lead to catastrophic failure.

    • Determine the extent by which a specific form of corrosion affects a material.

  • Susceptibility of the material to corrosion

    • Susceptible alloys

    • Resistant alloys

AMPTIAC Quarterly Volume 9, Number 3, 2005

AMPTIAC Material Failure Modes Desk Reference


Kennedy space centers experience with corrosion
Kennedy Space Centers Katrina: Experience with Corrosion

The launch environment at KSC is extremely corrosive:

  • Ocean salt spray

  • Heat

  • Humidity

  • Sunlight


In 1981 the Space Shuttle Katrina:

introduced acidic deposition conditions

SRB Exhaust


Vehicle assembly building
Vehicle Assembly Building Katrina:

  • 525 ft tall

  • 716 ft long

  • 518 ft wide

  • Covers 8 acres

  • Encloses

    129,428,000 ft3

  • Rose Bowl or Yankee

    Stadium could fit on

    roof.


Vab corrosion mitigation
VAB Corrosion Mitigation Katrina:

  • Corrosion due to the presence of salt resulting from the exposure to sea water or the use of contaminated aggregate in the original concrete mix.

    • Destroy the structural integrity of steel reinforced concrete structures.

    • Cathodic protection can eliminate costly cycle of concrete repairs and repeated assessments due to corrosion.


Vab roof repair
VAB Roof Repair Katrina:


Cathodic protection

Mains Power Source Katrina:

DATA OUTPUT

METERS

COMPUTER CONTROL

Monitoring Unit

DC Power Supply

Signal

ANODE

CABLING

CATHODE

CABLING

SIGNAL

CABLING

CONNECTIONS

CONNECTIONS

PROTECTED STEEL

CONCRETE

(Electrolyte)

ANODE SYSTEM

REFERENCE

ELECTRODE

Cathodic Protection



Vab corrosion mitigation2
VAB Corrosion Mitigation Katrina:

Conductive Mastic


Conclusions
Conclusions Katrina:

  • Incorporation of corrosion control and mitigation into the design and material selection phase of planning and development.

  • Taking advantage of new and improved technologies could dramatically reduce expensive corrosion related repairs and possible catastrophic failures.


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