USS PRINCETON (CG59): Microbiologically Influenced Corrosion (MIC) and Macrofouling Status of Seawater Piping Systems
Abstract
This report summarizes the microfouling and macrofouling within the seawater piping system of the USS PRINCETON (CG59) and assesses their contribution to the failures/corrosion problems observed. Sulfate reducing bacteria (SRB) were isolated from two test areas of the seawater piping system. Biofilms containing SRB are known to cause corrosion problems in a wide variety of materials. Therefore, longterm monitoring for SRB and microbiologically influenced corrosion (MIC) problems from SRB in the sea chest and/or copper- nickel seawater piping systems was recommended. The macrofouling problems were due to the marine mussel, Mytilus edulis, and hydroids. Hydroids (animals) formed dense, plant-like colonies. Copper (from the copper-nickel seawater piping) gives the hydroids a green color so that they have the appearance of seaweed. Shrimp, crab, sponges, other unidentified crustaceans and fouling deposits were observed by a fiber optics examination in the main sea chest. Due to the observed failures/corrosion problems and the extent of the macrofouling in the seawater piping system, an environmentally safe, thermal (steam) control method for the macrofouling was recommended. Without a biofouling control procedure, failures/corrosion problems as observed in CG 59 seawater piping systems are likely to occur.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1990
- Accession Number
- ADA231251
Entities
People
- Brenda J. Little
- Joanne M. Jones
Organizations
- Naval Surface Warfare Center