NASA MSFC STD 481 : 1966

1 SCOPE
  1.1 Scope
  1.2 Application
  1.3 Limitations
2 REFERENCED DOCUMENTS
3 DEFINITIONS
  3.1 Lack of fusion
  3.2 Insufficient penetration
  3.3 Metal thinning and undercutting
  3.4 Surface irregularities
  3.5 Inclusions
  3.6 Linear porosity
4 GENERAL REQUIREMENTS
  4.1 Qualification
  4.2 Equipment
      4.2.1 Focal spot
      4.2.2 Penetrameters
      4.2.3 Viewers
  4.3 Materials
      4.3.1 Film densities
  4.4 Soundness requirements of fusion welds
      4.4.1 Cracks
      4.4.2 Fusion
      4.4.3 Penetration
      4.4.4 Metal thinning and undercutting
      4.4.5 Cavities
      4.4.6 Surface irregularities
      4.4.7 Inclusions
  4.5 Identification marking
      4.5.1 Test area
      4.5.2 Radiographic film identification
  4.6 Extent of inspection
  4.7 Rejection
5 DETAILED REQUIREMENTS
  5.1 Focal distance
  5.2 Equipment
      5.2.1 Radiographic technique
  5.3 Radiographic procedure
  5.4 Surface defects
  5.5 Changes, deviations, or waivers
Notice

Establishes the radiographic inspection and acceptance standards for fusion welded joints in stainless and hear-resistance steel.