SHIPBOARD EVALUATION OF GRP SOIL DRAIN PIPING ON USS SAIPAN (LHA-2)

Glass-reinforced plastic (GRP) piping was evaluated in the soil drain system of USS SAIPAN (LHA-2) to determine its ability to reduce the incidence of scale buildup. Although scale buildup rates for seawater serviced GRP and copper-nickel soil drains were found to be high, scale formed at a rate of 2.5 times slower in GRP pipe than in comparably used copper-nickel soil drains. Review of past studies in conjunction with practices observed during this evaluation revealed that current mechanical scale removal techniques used for copper-nickel pipe cannot be successfully applied to GRP pipe; however, commercial descaling agents can be used for GRP if the total collection system volume is not excessively large.

• Supplemental Notes:
  • Report; DTIC distribution restrictions apply
• Corporate Authors:

  David Taylor Naval Ship R&D Center

  Development Center
  Bethesda, MD  United States  20084

  Naval Sea Systems Command

  , ZZ N/A   
• Authors:
  • Gill, S E
  • Rodriguez, A T
• Publication Date: 1986-7

Media Info

• Features: References;
• Pagination: 18 p.

Subject/Index Terms

• TRT Terms: Corrosion; Drainage; Evaluation; Glass fiber reinforced plastics; Piping systems; Sewage treatment
• Uncontrolled Terms: Waste treatment
• Old TRIS Terms: Saipan (Vessel); Scale (Corrosion)
• Subject Areas: Hydraulics and Hydrology; Marine Transportation;

Filing Info

• Accession Number: 00651535
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Report/Paper Numbers: DTNSRDC/SME-86/25
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM