A liquid penetrant inspection of cladding on the inside surface of the N.S. Savannah closure head indicated the presence of two unbonded areas due to rolled weld metal at automatic submerged arc process. Ultrasonic testing was employed to verify the extent of the defective areas. The first area, separated 360 degrees around the circumference of the head, was removed by machining on a vertical boring mill. The second area, extending 180 degrees, was removed by chipping and grinding. In both cases base material was exposed in the removal of the cladding. The closure head with the control rods welded in place was too heavy for a welding positioner. As this positioner is required for the submerged arc process, the manual metal arc clad welding process was utilized.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number BAW-R-543.
  • Corporate Authors:

    Babcock and Wilcox Company

    Boiler Division
    Barberton, OH  United States 
  • Authors:
    • Griffin, R C
  • Publication Date: 1961-12-1

Media Info

  • Features: Figures; Photos;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026339
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: BAW-R-543
  • Contract Numbers: AT(30-3)-274
  • Files: TRIS, USDOT
  • Created Date: Feb 14 1973 12:00AM